[{"citation":{"apa":"Delfs, P., Toews, M., &#38; Schmid, H.-J. (2015). Surface roughness optimized alignment of parts for additive manufacturing processes. In <i>26th Annual International Solid Freeform Fabrication Symposium</i> (Vol. 26, pp. 1334–1344). <a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-107-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-107-Delfs.pdf</a>","short":"P. Delfs, M. Toews, H.-J. Schmid, in: 26th Annual International Solid Freeform Fabrication Symposium, 2015, pp. 1334–1344.","mla":"Delfs, Patrick, et al. “Surface Roughness Optimized Alignment of Parts for Additive Manufacturing Processes.” <i>26th Annual International Solid Freeform Fabrication Symposium</i>, vol. 26, 2015, pp. 1334–44, doi:<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-107-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-107-Delfs.pdf</a>.","bibtex":"@inproceedings{Delfs_Toews_Schmid_2015, title={Surface roughness optimized alignment of parts for additive manufacturing processes}, volume={26}, DOI={<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-107-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-107-Delfs.pdf</a>}, booktitle={26th Annual International Solid Freeform Fabrication Symposium}, author={Delfs, Patrick and Toews, Marcel and Schmid, Hans-Joachim}, year={2015}, pages={1334–1344} }","chicago":"Delfs, Patrick, Marcel Toews, and Hans-Joachim Schmid. “Surface Roughness Optimized Alignment of Parts for Additive Manufacturing Processes.” In <i>26th Annual International Solid Freeform Fabrication Symposium</i>, 26:1334–44, 2015. <a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-107-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-107-Delfs.pdf</a>.","ieee":"P. Delfs, M. Toews, and H.-J. Schmid, “Surface roughness optimized alignment of parts for additive manufacturing processes,” in <i>26th Annual International Solid Freeform Fabrication Symposium</i>, 2015, vol. 26, pp. 1334–1344.","ama":"Delfs P, Toews M, Schmid H-J. Surface roughness optimized alignment of parts for additive manufacturing processes. In: <i>26th Annual International Solid Freeform Fabrication Symposium</i>. Vol 26. ; 2015:1334-1344. doi:<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-107-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-107-Delfs.pdf</a>"},"page":"1334-1344","intvolume":"        26","year":"2015","date_created":"2021-05-14T07:46:20Z","author":[{"last_name":"Delfs","full_name":"Delfs, Patrick","first_name":"Patrick"},{"first_name":"Marcel","last_name":"Toews","full_name":"Toews, Marcel"},{"last_name":"Schmid","full_name":"Schmid, Hans-Joachim","id":"464","first_name":"Hans-Joachim"}],"volume":26,"date_updated":"2022-01-06T06:55:28Z","doi":"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-107-Delfs.pdf","title":"Surface roughness optimized alignment of parts for additive manufacturing processes","type":"conference","publication":"26th Annual International Solid Freeform Fabrication Symposium","status":"public","abstract":[{"lang":"eng","text":"The layered structure of Additive Manufacturing processes results in a stairstepping effect of the surface topographies. In general the impact of this effect strongly depends on the build angle of a surface, whereas the overall surface roughness is caused by the resolution of the specific AM process. The aim of this work is the prediction of the surface quality in dependence of the building orientation of a part. These results can finally be used to optimize the orientation to get a desired surface quality. As not every area of a part can be optimized, a predetermination of areas can be used to improve the surface quality of important areas. The model uses the digital STL format of a part as this is necessary for all AM machines to build it. Each triangle is assigned with a roughness value and by testing different orientations the best one can be found. This approach needs a database for the surface qualities. This must be done separately for each Additive Manufacturing process and is shown exemplary with a surface topography simulation for the laser sintering process."}],"user_id":"71545","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"_id":"22189","language":[{"iso":"eng"}]},{"year":"2015","citation":{"ieee":"S. Josupeit, S. Tutzschky, M. Gessler, and H.-J. Schmid, “Powder ageing and material properties of laser sintered polyamide 12 using low refresh rates,” in <i>Proceedings of the Rapid Tech 2015</i>, 2015, pp. 63–78.","chicago":"Josupeit, Stefan, S. Tutzschky, M. Gessler, and Hans-Joachim Schmid. “Powder Ageing and Material Properties of Laser Sintered Polyamide 12 Using Low Refresh Rates.” In <i>Proceedings of the Rapid Tech 2015</i>, 63–78. Springer Vieweg, 2015. <a href=\"https://doi.org/10.1007/978-3-662-48473-9_5\">https://doi.org/10.1007/978-3-662-48473-9_5</a>.","ama":"Josupeit S, Tutzschky S, Gessler M, Schmid H-J. Powder ageing and material properties of laser sintered polyamide 12 using low refresh rates. In: <i>Proceedings of the Rapid Tech 2015</i>. Springer Vieweg; 2015:63-78. doi:<a href=\"https://doi.org/10.1007/978-3-662-48473-9_5\">10.1007/978-3-662-48473-9_5</a>","bibtex":"@inproceedings{Josupeit_Tutzschky_Gessler_Schmid_2015, title={Powder ageing and material properties of laser sintered polyamide 12 using low refresh rates}, DOI={<a href=\"https://doi.org/10.1007/978-3-662-48473-9_5\">10.1007/978-3-662-48473-9_5</a>}, booktitle={Proceedings of the Rapid Tech 2015}, publisher={Springer Vieweg}, author={Josupeit, Stefan and Tutzschky, S. and Gessler, M. and Schmid, Hans-Joachim}, year={2015}, pages={63–78} }","short":"S. Josupeit, S. Tutzschky, M. Gessler, H.-J. Schmid, in: Proceedings of the Rapid Tech 2015, Springer Vieweg, 2015, pp. 63–78.","mla":"Josupeit, Stefan, et al. “Powder Ageing and Material Properties of Laser Sintered Polyamide 12 Using Low Refresh Rates.” <i>Proceedings of the Rapid Tech 2015</i>, Springer Vieweg, 2015, pp. 63–78, doi:<a href=\"https://doi.org/10.1007/978-3-662-48473-9_5\">10.1007/978-3-662-48473-9_5</a>.","apa":"Josupeit, S., Tutzschky, S., Gessler, M., &#38; Schmid, H.-J. (2015). Powder ageing and material properties of laser sintered polyamide 12 using low refresh rates. In <i>Proceedings of the Rapid Tech 2015</i> (pp. 63–78). Springer Vieweg. <a href=\"https://doi.org/10.1007/978-3-662-48473-9_5\">https://doi.org/10.1007/978-3-662-48473-9_5</a>"},"page":"63-78","publication_identifier":{"isbn":["978-3-662-48473-9"]},"title":"Powder ageing and material properties of laser sintered polyamide 12 using low refresh rates","doi":"10.1007/978-3-662-48473-9_5","publisher":"Springer Vieweg","date_updated":"2022-01-06T06:55:28Z","date_created":"2021-05-14T07:46:32Z","author":[{"first_name":"Stefan","last_name":"Josupeit","full_name":"Josupeit, Stefan"},{"last_name":"Tutzschky","full_name":"Tutzschky, S.","first_name":"S."},{"last_name":"Gessler","full_name":"Gessler, M.","first_name":"M."},{"last_name":"Schmid","full_name":"Schmid, Hans-Joachim","id":"464","first_name":"Hans-Joachim"}],"abstract":[{"text":"Powder ageing effects due to thermal load usually lead to a limited recyclability of unmolten polyamide 12 powders in the laser sintering process. In this work, the recycling optimized material PA 2221 is analyzed regarding its ageing behavior along a series of more than ten build/refresh cycles using a refresh ratio of about 30%. Thereby, the melt viscosity is measured before and after every cycle and the “steady-state” condition is determined accordingly. In addition, the material properties of parts manufactured with PA 2221 are discussed dependent on different process parameters and compared to parts made of standard PA 2200 material with a refresh rate of about 50%. These parameters include the mechanical properties as well as for example the impact strength and geometrical properties as function of layer thickness and testing temperature. As a result, the optimal process conditions and achievable material properties for PA 2221 can be derived from this work.","lang":"eng"}],"status":"public","type":"conference","publication":"Proceedings of the Rapid Tech 2015","language":[{"iso":"eng"}],"_id":"22199","user_id":"71545","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}]},{"status":"public","publication":"Proceedings of the Rapid Tech 2015","type":"conference","language":[{"iso":"eng"}],"_id":"22395","department":[{"_id":"9"},{"_id":"146"},{"_id":"219"},{"_id":"624"},{"_id":"367"},{"_id":"150"}],"user_id":"38077","year":"2015","citation":{"ieee":"T. Lieneke <i>et al.</i>, “Entwicklung einer Methode zur systematischen Erarbeitung von Maßtoleranzen für additive Fertigungsverfahren,” in <i>Proceedings of the Rapid Tech 2015</i>, 2015.","chicago":"Lieneke, Tobias, Guido Adam, Stefan Leuders, Frederick Knoop, Stefan Josupeit, Patrick Delfs, Nils Funke, and Detmar Zimmer. “Entwicklung Einer Methode Zur Systematischen Erarbeitung von Maßtoleranzen Für Additive Fertigungsverfahren.” In <i>Proceedings of the Rapid Tech 2015</i>, 2015.","ama":"Lieneke T, Adam G, Leuders S, et al. Entwicklung einer Methode zur systematischen Erarbeitung von Maßtoleranzen für additive Fertigungsverfahren. In: <i>Proceedings of the Rapid Tech 2015</i>. ; 2015.","bibtex":"@inproceedings{Lieneke_Adam_Leuders_Knoop_Josupeit_Delfs_Funke_Zimmer_2015, title={Entwicklung einer Methode zur systematischen Erarbeitung von Maßtoleranzen für additive Fertigungsverfahren}, booktitle={Proceedings of the Rapid Tech 2015}, author={Lieneke, Tobias and Adam, Guido and Leuders, Stefan and Knoop, Frederick and Josupeit, Stefan and Delfs, Patrick and Funke, Nils and Zimmer, Detmar}, year={2015} }","short":"T. Lieneke, G. Adam, S. Leuders, F. Knoop, S. Josupeit, P. Delfs, N. Funke, D. Zimmer, in: Proceedings of the Rapid Tech 2015, 2015.","mla":"Lieneke, Tobias, et al. “Entwicklung Einer Methode Zur Systematischen Erarbeitung von Maßtoleranzen Für Additive Fertigungsverfahren.” <i>Proceedings of the Rapid Tech 2015</i>, 2015.","apa":"Lieneke, T., Adam, G., Leuders, S., Knoop, F., Josupeit, S., Delfs, P., … Zimmer, D. (2015). Entwicklung einer Methode zur systematischen Erarbeitung von Maßtoleranzen für additive Fertigungsverfahren. In <i>Proceedings of the Rapid Tech 2015</i>."},"title":"Entwicklung einer Methode zur systematischen Erarbeitung von Maßtoleranzen für additive Fertigungsverfahren","date_updated":"2022-01-06T06:55:32Z","date_created":"2021-06-15T11:09:21Z","author":[{"first_name":"Tobias","full_name":"Lieneke, Tobias","last_name":"Lieneke"},{"first_name":"Guido","full_name":"Adam, Guido","last_name":"Adam"},{"first_name":"Stefan","full_name":"Leuders, Stefan","last_name":"Leuders"},{"full_name":"Knoop, Frederick","last_name":"Knoop","first_name":"Frederick"},{"first_name":"Stefan","last_name":"Josupeit","full_name":"Josupeit, Stefan"},{"first_name":"Patrick","full_name":"Delfs, Patrick","last_name":"Delfs"},{"full_name":"Funke, Nils","last_name":"Funke","first_name":"Nils"},{"full_name":"Zimmer, Detmar","id":"604","last_name":"Zimmer","first_name":"Detmar"}]},{"year":"2015","intvolume":"        26","page":"371-384","citation":{"apa":"Lieneke, T., Adam, G., Leuders, S., Knoop, F., Josupeit, S., Delfs, P., … Zimmer, D. (2015). Systematical determination of tolerances for additive manufacturing by measuring linear dimensions. In <i>26th Annual International Solid Freeform Fabrication Symposium</i> (Vol. 26, pp. 371–384). <a href=\"https://www.researchgate.net/publication/316827402_Systematical_Determination_of_Tolerances_for_Additive_Manufacturing_by_Measuring_Linear_Dimensions\">https://www.researchgate.net/publication/316827402_Systematical_Determination_of_Tolerances_for_Additive_Manufacturing_by_Measuring_Linear_Dimensions</a>","short":"T. Lieneke, G. Adam, S. Leuders, F. Knoop, S. Josupeit, P. Delfs, N. Funke, D. Zimmer, in: 26th Annual International Solid Freeform Fabrication Symposium, 2015, pp. 371–384.","mla":"Lieneke, Tobias, et al. “Systematical Determination of Tolerances for Additive Manufacturing by Measuring Linear Dimensions.” <i>26th Annual International Solid Freeform Fabrication Symposium</i>, vol. 26, 2015, pp. 371–84, doi:<a href=\"https://www.researchgate.net/publication/316827402_Systematical_Determination_of_Tolerances_for_Additive_Manufacturing_by_Measuring_Linear_Dimensions\">https://www.researchgate.net/publication/316827402_Systematical_Determination_of_Tolerances_for_Additive_Manufacturing_by_Measuring_Linear_Dimensions</a>.","bibtex":"@inproceedings{Lieneke_Adam_Leuders_Knoop_Josupeit_Delfs_Funke_Zimmer_2015, title={Systematical determination of tolerances for additive manufacturing by measuring linear dimensions}, volume={26}, DOI={<a href=\"https://www.researchgate.net/publication/316827402_Systematical_Determination_of_Tolerances_for_Additive_Manufacturing_by_Measuring_Linear_Dimensions\">https://www.researchgate.net/publication/316827402_Systematical_Determination_of_Tolerances_for_Additive_Manufacturing_by_Measuring_Linear_Dimensions</a>}, booktitle={26th Annual International Solid Freeform Fabrication Symposium}, author={Lieneke, Tobias and Adam, Guido and Leuders, Stefan and Knoop, Frederick and Josupeit, Stefan and Delfs, Patrick and Funke, Nils and Zimmer, Detmar}, year={2015}, pages={371–384} }","ama":"Lieneke T, Adam G, Leuders S, et al. Systematical determination of tolerances for additive manufacturing by measuring linear dimensions. In: <i>26th Annual International Solid Freeform Fabrication Symposium</i>. Vol 26. ; 2015:371-384. doi:<a href=\"https://www.researchgate.net/publication/316827402_Systematical_Determination_of_Tolerances_for_Additive_Manufacturing_by_Measuring_Linear_Dimensions\">https://www.researchgate.net/publication/316827402_Systematical_Determination_of_Tolerances_for_Additive_Manufacturing_by_Measuring_Linear_Dimensions</a>","chicago":"Lieneke, Tobias, Guido Adam, Stefan Leuders, Frederick Knoop, Stefan Josupeit, Patrick Delfs, Nils Funke, and Detmar Zimmer. “Systematical Determination of Tolerances for Additive Manufacturing by Measuring Linear Dimensions.” In <i>26th Annual International Solid Freeform Fabrication Symposium</i>, 26:371–84, 2015. <a href=\"https://www.researchgate.net/publication/316827402_Systematical_Determination_of_Tolerances_for_Additive_Manufacturing_by_Measuring_Linear_Dimensions\">https://www.researchgate.net/publication/316827402_Systematical_Determination_of_Tolerances_for_Additive_Manufacturing_by_Measuring_Linear_Dimensions</a>.","ieee":"T. Lieneke <i>et al.</i>, “Systematical determination of tolerances for additive manufacturing by measuring linear dimensions,” in <i>26th Annual International Solid Freeform Fabrication Symposium</i>, 2015, vol. 26, pp. 371–384."},"date_updated":"2022-01-06T06:55:32Z","volume":26,"author":[{"first_name":"Tobias","last_name":"Lieneke","id":"13956","full_name":"Lieneke, Tobias"},{"full_name":"Adam, Guido","last_name":"Adam","first_name":"Guido"},{"full_name":"Leuders, Stefan","last_name":"Leuders","first_name":"Stefan"},{"first_name":"Frederick","full_name":"Knoop, Frederick","last_name":"Knoop"},{"first_name":"Stefan","last_name":"Josupeit","full_name":"Josupeit, Stefan"},{"first_name":"Patrick","last_name":"Delfs","full_name":"Delfs, Patrick"},{"first_name":"Nils","last_name":"Funke","full_name":"Funke, Nils"},{"full_name":"Zimmer, Detmar","id":"604","last_name":"Zimmer","first_name":"Detmar"}],"date_created":"2021-06-15T11:09:22Z","title":"Systematical determination of tolerances for additive manufacturing by measuring linear dimensions","doi":"https://www.researchgate.net/publication/316827402_Systematical_Determination_of_Tolerances_for_Additive_Manufacturing_by_Measuring_Linear_Dimensions","publication":"26th Annual International Solid Freeform Fabrication Symposium","type":"conference","abstract":[{"lang":"eng","text":"Additive manufacturing offers many technical and economical benefits. In order to profit from these benefits, it is necessary to consider the manufacturing limits and restrictions. This applies in particular to the geometrical accuracy. Therefore, the achievable geometrical accuracy needs to be investigated, which enables the determination of realistic tolerances. Thus, two different aims are considered. The first aim is the determination of dimensional tolerances that can be stated if additive manufacturing is used under normal workshop conditions. Within the second aim, relevant process parameters and manufacturing influences will be optimized in order to reduce dimensional deviations. To achieve both aims a method was developed first. This method identifies relevant influential factors on the geometrical accuracy for the processes Fused Deposition Modeling (FDM), Laser Sintering (LS) and Laser Melting (LM). Factors were selected that are expected to affect the geometrical accuracy mainly. The first investigations deal with measuring linear dimensions on a designed test specimen and the derivation of achievable dimensional tolerances. This paper will present both, the developed method and the first results of the experimental investigations."}],"status":"public","_id":"22396","department":[{"_id":"9"},{"_id":"146"},{"_id":"219"},{"_id":"624"},{"_id":"367"},{"_id":"150"}],"user_id":"38077","language":[{"iso":"eng"}]},{"status":"public","abstract":[{"text":"One barrier of laser sintering (LS) to become the main process for Direct Manufacturing (DM) is the surface quality of LS parts. Hence, the property which has to be improved is the rough surfaces of LS parts due to the layered structure. Another additional effect is the incomplete melting of powder particles on the surface due to the high process temperature. In this paper we demonstrate our approach of a theoretical model for the topography of LS part surfaces. We investigated the surface roughness as a function of surface orientation. Considering that the model involves further variables as layer thickness, particle density and particle size distribution to describe the topography precisely. Experimental results were used to optimize and check the results of the model.","lang":"eng"}],"publication":"25th Annual International Solid Freeform Fabrication Symposium","type":"conference","language":[{"iso":"eng"}],"department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"user_id":"71545","_id":"22176","page":"1250-1258","intvolume":"        25","citation":{"short":"P. Delfs, A.A. Herale, Z. Li, H.-J. Schmid, in: 25th Annual International Solid Freeform Fabrication Symposium, 2014, pp. 1250–1258.","mla":"Delfs, Patrick, et al. “Simulation of the Surface Topography on Laser Sintered Polymer Parts.” <i>25th Annual International Solid Freeform Fabrication Symposium</i>, vol. 25, 2014, pp. 1250–58, doi:<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf</a>.","bibtex":"@inproceedings{Delfs_Herale_Li_Schmid_2014, title={Simulation of the Surface Topography on Laser Sintered Polymer Parts}, volume={25}, DOI={<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf</a>}, booktitle={25th Annual International Solid Freeform Fabrication Symposium}, author={Delfs, Patrick and Herale, A.A. and Li, Z. and Schmid, Hans-Joachim}, year={2014}, pages={1250–1258} }","apa":"Delfs, P., Herale, A. A., Li, Z., &#38; Schmid, H.-J. (2014). Simulation of the Surface Topography on Laser Sintered Polymer Parts. In <i>25th Annual International Solid Freeform Fabrication Symposium</i> (Vol. 25, pp. 1250–1258). <a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf</a>","ama":"Delfs P, Herale AA, Li Z, Schmid H-J. Simulation of the Surface Topography on Laser Sintered Polymer Parts. In: <i>25th Annual International Solid Freeform Fabrication Symposium</i>. Vol 25. ; 2014:1250-1258. doi:<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf</a>","chicago":"Delfs, Patrick, A.A. Herale, Z. Li, and Hans-Joachim Schmid. “Simulation of the Surface Topography on Laser Sintered Polymer Parts.” In <i>25th Annual International Solid Freeform Fabrication Symposium</i>, 25:1250–58, 2014. <a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf</a>.","ieee":"P. Delfs, A. A. Herale, Z. Li, and H.-J. Schmid, “Simulation of the Surface Topography on Laser Sintered Polymer Parts,” in <i>25th Annual International Solid Freeform Fabrication Symposium</i>, 2014, vol. 25, pp. 1250–1258."},"year":"2014","doi":"http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf","title":"Simulation of the Surface Topography on Laser Sintered Polymer Parts","volume":25,"author":[{"last_name":"Delfs","full_name":"Delfs, Patrick","first_name":"Patrick"},{"last_name":"Herale","full_name":"Herale, A.A.","first_name":"A.A."},{"full_name":"Li, Z.","last_name":"Li","first_name":"Z."},{"id":"464","full_name":"Schmid, Hans-Joachim","last_name":"Schmid","first_name":"Hans-Joachim"}],"date_created":"2021-05-14T07:46:05Z","date_updated":"2022-01-06T06:55:28Z"},{"citation":{"ieee":"S. Josupeit and H.-J. Schmid, “Three-dimensional in-process temperature measurement of laser sintered part cakes,” in <i>25th Annual International Solid Freeform Fabrication Symposium</i>, 2014, vol. 25, pp. 49–58.","chicago":"Josupeit, Stefan, and Hans-Joachim Schmid. “Three-Dimensional in-Process Temperature Measurement of Laser Sintered Part Cakes.” In <i>25th Annual International Solid Freeform Fabrication Symposium</i>, 25:49–58, 2014. <a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2014-006-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2014-006-Josupeit.pdf</a>.","ama":"Josupeit S, Schmid H-J. Three-dimensional in-process temperature measurement of laser sintered part cakes. In: <i>25th Annual International Solid Freeform Fabrication Symposium</i>. Vol 25. ; 2014:49-58. doi:<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2014-006-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2014-006-Josupeit.pdf</a>","apa":"Josupeit, S., &#38; Schmid, H.-J. (2014). Three-dimensional in-process temperature measurement of laser sintered part cakes. In <i>25th Annual International Solid Freeform Fabrication Symposium</i> (Vol. 25, pp. 49–58). <a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2014-006-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2014-006-Josupeit.pdf</a>","short":"S. Josupeit, H.-J. Schmid, in: 25th Annual International Solid Freeform Fabrication Symposium, 2014, pp. 49–58.","bibtex":"@inproceedings{Josupeit_Schmid_2014, title={Three-dimensional in-process temperature measurement of laser sintered part cakes}, volume={25}, DOI={<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2014-006-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2014-006-Josupeit.pdf</a>}, booktitle={25th Annual International Solid Freeform Fabrication Symposium}, author={Josupeit, Stefan and Schmid, Hans-Joachim}, year={2014}, pages={49–58} }","mla":"Josupeit, Stefan, and Hans-Joachim Schmid. “Three-Dimensional in-Process Temperature Measurement of Laser Sintered Part Cakes.” <i>25th Annual International Solid Freeform Fabrication Symposium</i>, vol. 25, 2014, pp. 49–58, doi:<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2014-006-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2014-006-Josupeit.pdf</a>."},"page":"49-58","intvolume":"        25","year":"2014","doi":"http://utw10945.utweb.utexas.edu/sites/default/files/2014-006-Josupeit.pdf","title":"Three-dimensional in-process temperature measurement of laser sintered part cakes","date_created":"2021-05-14T07:46:06Z","author":[{"first_name":"Stefan","last_name":"Josupeit","full_name":"Josupeit, Stefan"},{"last_name":"Schmid","full_name":"Schmid, Hans-Joachim","id":"464","first_name":"Hans-Joachim"}],"volume":25,"date_updated":"2022-01-06T06:55:28Z","status":"public","abstract":[{"text":"An uneven temperature distribution and varying cooling rates at different positions within the part cake are two of the most important challenges regarding the part quality and reproducibility of the polymer laser sintering process. In the presented work, a temperature measurement system is implemented within an EOSINT P395 laser sintering system. It allows the determination of a three dimensional temperature distribution and history during the full build and cooling process. The influence of important job parameters, for example the packing density, job height and layer thickness, can be figured out. In combination with a finite element simulation of the cooling process, the temperature measurement will be the basis for optimized process controls.","lang":"eng"}],"type":"conference","publication":"25th Annual International Solid Freeform Fabrication Symposium","language":[{"iso":"eng"}],"user_id":"71545","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"_id":"22177"},{"publication":"72nd Annual Technical Conference of the Society of Plastics Engineers (ANTEC 2014)","type":"conference","abstract":[{"lang":"eng","text":"Polymer laser sintering is one of the most important additive manufacturing technologies for the tool-less production of three-dimensional prototypes and end-use parts. In this process, parts are manufactured layerwise out of a polymer powder by laser exposure. After the building process, these parts are located within a loose bulk powder cake. Due to long process times and high process temperatures, this powder ages thermally, which reduces the recyclability of the material. As a result, mixtures of used and virgin powder (\"refreshed\" powder) with a mixture ratio of approximately 50% are commonly used in the industry. The goal of this work is to determine the exact influence of different powder ages on resulting part quality characteristics, especially the mechanical behavior and the surface quality. Therefore, refreshed powder with different qualities adjusted by the melt volume rate (MVR) was processed along a defined process quality chain. To analyze the part qualities, mechanical tensile and profilometer tests were performed. The focus is on an application-oriented test set-up to ensure the usability of the results in the industry. The material used is polyamide 12 (PA 2200) processed on an EOSINT P395 laser sintering system from EOS GmbH, Krailling, Germany."}],"status":"public","_id":"22184","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"user_id":"71545","language":[{"iso":"eng"}],"publication_identifier":{"isbn":["978-1-634-39708-7"]},"issue":"3","year":"2014","page":"2383-2385","intvolume":"        72","citation":{"apa":"Josupeit, S., Rüsenberg, S., Rupp, N., Gessler, M., &#38; Schmid, H.-J. (2014). Thermal ageing of polyamide 12 used for polymer laser sintering - influence on part quality characteristics. In <i>72nd Annual Technical Conference of the Society of Plastics Engineers (ANTEC 2014)</i> (Vol. 72, pp. 2383–2385). <a href=\"https://www.researchgate.net/publication/283135483_Thermal_ageing_of_polyamide_12_used_for_polymer_laser_sintering_-_Influence_on_part_quality_characteristics\">https://www.researchgate.net/publication/283135483_Thermal_ageing_of_polyamide_12_used_for_polymer_laser_sintering_-_Influence_on_part_quality_characteristics</a>","short":"S. Josupeit, S. Rüsenberg, N. Rupp, M. Gessler, H.-J. Schmid, in: 72nd Annual Technical Conference of the Society of Plastics Engineers (ANTEC 2014), 2014, pp. 2383–2385.","bibtex":"@inproceedings{Josupeit_Rüsenberg_Rupp_Gessler_Schmid_2014, title={Thermal ageing of polyamide 12 used for polymer laser sintering - influence on part quality characteristics}, volume={72}, DOI={<a href=\"https://www.researchgate.net/publication/283135483_Thermal_ageing_of_polyamide_12_used_for_polymer_laser_sintering_-_Influence_on_part_quality_characteristics\">https://www.researchgate.net/publication/283135483_Thermal_ageing_of_polyamide_12_used_for_polymer_laser_sintering_-_Influence_on_part_quality_characteristics</a>}, number={3}, booktitle={72nd Annual Technical Conference of the Society of Plastics Engineers (ANTEC 2014)}, author={Josupeit, Stefan and Rüsenberg, Stefan and Rupp, N. and Gessler, Monika and Schmid, Hans-Joachim}, year={2014}, pages={2383–2385} }","mla":"Josupeit, Stefan, et al. “Thermal Ageing of Polyamide 12 Used for Polymer Laser Sintering - Influence on Part Quality Characteristics.” <i>72nd Annual Technical Conference of the Society of Plastics Engineers (ANTEC 2014)</i>, vol. 72, no. 3, 2014, pp. 2383–85, doi:<a href=\"https://www.researchgate.net/publication/283135483_Thermal_ageing_of_polyamide_12_used_for_polymer_laser_sintering_-_Influence_on_part_quality_characteristics\">https://www.researchgate.net/publication/283135483_Thermal_ageing_of_polyamide_12_used_for_polymer_laser_sintering_-_Influence_on_part_quality_characteristics</a>.","ama":"Josupeit S, Rüsenberg S, Rupp N, Gessler M, Schmid H-J. Thermal ageing of polyamide 12 used for polymer laser sintering - influence on part quality characteristics. In: <i>72nd Annual Technical Conference of the Society of Plastics Engineers (ANTEC 2014)</i>. Vol 72. ; 2014:2383-2385. doi:<a href=\"https://www.researchgate.net/publication/283135483_Thermal_ageing_of_polyamide_12_used_for_polymer_laser_sintering_-_Influence_on_part_quality_characteristics\">https://www.researchgate.net/publication/283135483_Thermal_ageing_of_polyamide_12_used_for_polymer_laser_sintering_-_Influence_on_part_quality_characteristics</a>","ieee":"S. Josupeit, S. Rüsenberg, N. Rupp, M. Gessler, and H.-J. Schmid, “Thermal ageing of polyamide 12 used for polymer laser sintering - influence on part quality characteristics,” in <i>72nd Annual Technical Conference of the Society of Plastics Engineers (ANTEC 2014)</i>, 2014, vol. 72, no. 3, pp. 2383–2385.","chicago":"Josupeit, Stefan, Stefan Rüsenberg, N. Rupp, Monika Gessler, and Hans-Joachim Schmid. “Thermal Ageing of Polyamide 12 Used for Polymer Laser Sintering - Influence on Part Quality Characteristics.” In <i>72nd Annual Technical Conference of the Society of Plastics Engineers (ANTEC 2014)</i>, 72:2383–85, 2014. <a href=\"https://www.researchgate.net/publication/283135483_Thermal_ageing_of_polyamide_12_used_for_polymer_laser_sintering_-_Influence_on_part_quality_characteristics\">https://www.researchgate.net/publication/283135483_Thermal_ageing_of_polyamide_12_used_for_polymer_laser_sintering_-_Influence_on_part_quality_characteristics</a>."},"date_updated":"2022-01-06T06:55:28Z","volume":72,"author":[{"last_name":"Josupeit","full_name":"Josupeit, Stefan","first_name":"Stefan"},{"first_name":"Stefan","last_name":"Rüsenberg","full_name":"Rüsenberg, Stefan"},{"first_name":"N.","full_name":"Rupp, N.","last_name":"Rupp"},{"first_name":"Monika","full_name":"Gessler, Monika","last_name":"Gessler"},{"first_name":"Hans-Joachim","last_name":"Schmid","id":"464","full_name":"Schmid, Hans-Joachim"}],"date_created":"2021-05-14T07:46:14Z","title":"Thermal ageing of polyamide 12 used for polymer laser sintering - influence on part quality characteristics","doi":"https://www.researchgate.net/publication/283135483_Thermal_ageing_of_polyamide_12_used_for_polymer_laser_sintering_-_Influence_on_part_quality_characteristics"},{"status":"public","abstract":[{"lang":"eng","text":"The process-related occurrence of varying cooling rates at different positions within the part cake is an important challenge regarding the part quality and reproducibility of the polymer laser sintering process. Temperature history dependent parameters are for example the part warpage, the crystallization behavior or powder ageing effects, which have to be considered for optimized process controls. Nevertheless, the inner temperature distribution and history during the cooling process is difficult to measure and less known yet. In this work, a Finite Element (FE) model is developed to understand and predict the temperature distribution and history within the part cake during the cooling process. Therefore, the thermal boundary conditions of a laser sintering system are analyzed and relevant parameters are identified. A basic FE model is set up in ABAQUS CAE software considering a part-free powder cake. Important thermal parameters of the bulk powder and the environment are adjusted and verified in relation to experimental in-process measured data. With this model it is possible to predict position-dependent cooling rates as a function of significant job parameters, for example the job height or the environmental conditions during the cooling phase. In combination with extended in-process temperature measurements and a consideration of built parts, this model will be an important tool for the development of optimized process controls."}],"type":"conference","publication":"International Conference on Additive Technologies","language":[{"iso":"eng"}],"user_id":"71545","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"_id":"22193","citation":{"ama":"Josupeit S, Ordia L, Schmid H-J. Development of a Basic Model to Simulate the Laser Sintering Cooling Process. In: <i>International Conference on Additive Technologies</i>. Vol 5. ; 2014:222-227. doi:<a href=\"https://www.researchgate.net/profile/Saeed_Khademzadeh2/publication/303022441_Geometrical_characterization_of_thin_walls_produced_by_micro_laser_sintering/links/5735cc7f08ae298602e08f1f/Geometrical-characterization-of-thin-walls-produced-by-micro-laser-sintering.pdf\">https://www.researchgate.net/profile/Saeed_Khademzadeh2/publication/303022441_Geometrical_characterization_of_thin_walls_produced_by_micro_laser_sintering/links/5735cc7f08ae298602e08f1f/Geometrical-characterization-of-thin-walls-produced-by-micro-laser-sintering.pdf</a>","chicago":"Josupeit, Stefan, L. Ordia, and Hans-Joachim Schmid. “Development of a Basic Model to Simulate the Laser Sintering Cooling Process.” In <i>International Conference on Additive Technologies</i>, 5:222–27, 2014. <a href=\"https://www.researchgate.net/profile/Saeed_Khademzadeh2/publication/303022441_Geometrical_characterization_of_thin_walls_produced_by_micro_laser_sintering/links/5735cc7f08ae298602e08f1f/Geometrical-characterization-of-thin-walls-produced-by-micro-laser-sintering.pdf\">https://www.researchgate.net/profile/Saeed_Khademzadeh2/publication/303022441_Geometrical_characterization_of_thin_walls_produced_by_micro_laser_sintering/links/5735cc7f08ae298602e08f1f/Geometrical-characterization-of-thin-walls-produced-by-micro-laser-sintering.pdf</a>.","ieee":"S. Josupeit, L. Ordia, and H.-J. Schmid, “Development of a Basic Model to Simulate the Laser Sintering Cooling Process,” in <i>International Conference on Additive Technologies</i>, 2014, vol. 5, pp. 222–227.","short":"S. Josupeit, L. Ordia, H.-J. Schmid, in: International Conference on Additive Technologies, 2014, pp. 222–227.","bibtex":"@inproceedings{Josupeit_Ordia_Schmid_2014, title={Development of a Basic Model to Simulate the Laser Sintering Cooling Process}, volume={5}, DOI={<a href=\"https://www.researchgate.net/profile/Saeed_Khademzadeh2/publication/303022441_Geometrical_characterization_of_thin_walls_produced_by_micro_laser_sintering/links/5735cc7f08ae298602e08f1f/Geometrical-characterization-of-thin-walls-produced-by-micro-laser-sintering.pdf\">https://www.researchgate.net/profile/Saeed_Khademzadeh2/publication/303022441_Geometrical_characterization_of_thin_walls_produced_by_micro_laser_sintering/links/5735cc7f08ae298602e08f1f/Geometrical-characterization-of-thin-walls-produced-by-micro-laser-sintering.pdf</a>}, booktitle={International Conference on Additive Technologies}, author={Josupeit, Stefan and Ordia, L. and Schmid, Hans-Joachim}, year={2014}, pages={222–227} }","mla":"Josupeit, Stefan, et al. “Development of a Basic Model to Simulate the Laser Sintering Cooling Process.” <i>International Conference on Additive Technologies</i>, vol. 5, 2014, pp. 222–27, doi:<a href=\"https://www.researchgate.net/profile/Saeed_Khademzadeh2/publication/303022441_Geometrical_characterization_of_thin_walls_produced_by_micro_laser_sintering/links/5735cc7f08ae298602e08f1f/Geometrical-characterization-of-thin-walls-produced-by-micro-laser-sintering.pdf\">https://www.researchgate.net/profile/Saeed_Khademzadeh2/publication/303022441_Geometrical_characterization_of_thin_walls_produced_by_micro_laser_sintering/links/5735cc7f08ae298602e08f1f/Geometrical-characterization-of-thin-walls-produced-by-micro-laser-sintering.pdf</a>.","apa":"Josupeit, S., Ordia, L., &#38; Schmid, H.-J. (2014). Development of a Basic Model to Simulate the Laser Sintering Cooling Process. In <i>International Conference on Additive Technologies</i> (Vol. 5, pp. 222–227). <a href=\"https://www.researchgate.net/profile/Saeed_Khademzadeh2/publication/303022441_Geometrical_characterization_of_thin_walls_produced_by_micro_laser_sintering/links/5735cc7f08ae298602e08f1f/Geometrical-characterization-of-thin-walls-produced-by-micro-laser-sintering.pdf\">https://www.researchgate.net/profile/Saeed_Khademzadeh2/publication/303022441_Geometrical_characterization_of_thin_walls_produced_by_micro_laser_sintering/links/5735cc7f08ae298602e08f1f/Geometrical-characterization-of-thin-walls-produced-by-micro-laser-sintering.pdf</a>"},"page":"222-227","intvolume":"         5","year":"2014","publication_identifier":{"isbn":["978-961-281-579-0"]},"doi":"https://www.researchgate.net/profile/Saeed_Khademzadeh2/publication/303022441_Geometrical_characterization_of_thin_walls_produced_by_micro_laser_sintering/links/5735cc7f08ae298602e08f1f/Geometrical-characterization-of-thin-walls-produced-by-micro-laser-sintering.pdf","title":"Development of a Basic Model to Simulate the Laser Sintering Cooling Process","author":[{"last_name":"Josupeit","full_name":"Josupeit, Stefan","first_name":"Stefan"},{"first_name":"L.","last_name":"Ordia","full_name":"Ordia, L."},{"first_name":"Hans-Joachim","last_name":"Schmid","full_name":"Schmid, Hans-Joachim","id":"464"}],"date_created":"2021-05-14T07:46:25Z","volume":5,"date_updated":"2022-01-06T06:55:28Z"},{"department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"user_id":"71545","_id":"22203","language":[{"iso":"eng"}],"publication":"25th Annual International Solid Freeform Fabrication Symposium","type":"conference","status":"public","abstract":[{"lang":"eng","text":"One barrier of laser sintering (LS) to become the main process for Direct Manufacturing (DM) is the surface quality of LS parts. Hence, the property which has to be improved is the rough surfaces of LS parts due to the layered structure. Another additional effect is the incomplete melting of powder particles on the surface due to the high process temperature. In this paper we demonstrate our approach of a theoretical model for the topography of LS part surfaces. We investigated the surface roughness as a function of surface orientation. Considering that the model involves further variables as layer thickness, particle density and particle size distribution to describe the topography precisely. Experimental results were used to optimize and check the results of the model."}],"volume":25,"date_created":"2021-05-14T07:46:36Z","author":[{"first_name":"Patrick","last_name":"Delfs","full_name":"Delfs, Patrick"},{"first_name":"Hans-Joachim","id":"464","full_name":"Schmid, Hans-Joachim","last_name":"Schmid"}],"date_updated":"2022-01-06T06:55:29Z","doi":"http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf","title":"Simulation of the Surface Topography on Laser Sintered Polymer Parts","page":"1250-1258","intvolume":"        25","citation":{"ieee":"P. Delfs and H.-J. Schmid, “Simulation of the Surface Topography on Laser Sintered Polymer Parts,” in <i>25th Annual International Solid Freeform Fabrication Symposium</i>, 2014, vol. 25, pp. 1250–1258.","chicago":"Delfs, Patrick, and Hans-Joachim Schmid. “Simulation of the Surface Topography on Laser Sintered Polymer Parts.” In <i>25th Annual International Solid Freeform Fabrication Symposium</i>, 25:1250–58, 2014. <a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf</a>.","ama":"Delfs P, Schmid H-J. Simulation of the Surface Topography on Laser Sintered Polymer Parts. In: <i>25th Annual International Solid Freeform Fabrication Symposium</i>. Vol 25. ; 2014:1250-1258. doi:<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf</a>","apa":"Delfs, P., &#38; Schmid, H.-J. (2014). Simulation of the Surface Topography on Laser Sintered Polymer Parts. In <i>25th Annual International Solid Freeform Fabrication Symposium</i> (Vol. 25, pp. 1250–1258). <a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf</a>","short":"P. Delfs, H.-J. Schmid, in: 25th Annual International Solid Freeform Fabrication Symposium, 2014, pp. 1250–1258.","mla":"Delfs, Patrick, and Hans-Joachim Schmid. “Simulation of the Surface Topography on Laser Sintered Polymer Parts.” <i>25th Annual International Solid Freeform Fabrication Symposium</i>, vol. 25, 2014, pp. 1250–58, doi:<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf</a>.","bibtex":"@inproceedings{Delfs_Schmid_2014, title={Simulation of the Surface Topography on Laser Sintered Polymer Parts}, volume={25}, DOI={<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2014-098-Delfs.pdf</a>}, booktitle={25th Annual International Solid Freeform Fabrication Symposium}, author={Delfs, Patrick and Schmid, Hans-Joachim}, year={2014}, pages={1250–1258} }"},"year":"2014"},{"date_created":"2021-05-14T07:46:17Z","author":[{"first_name":"Stefan","full_name":"Rüsenberg, Stefan","last_name":"Rüsenberg"},{"full_name":"Josupeit, Stefan","last_name":"Josupeit","first_name":"Stefan"},{"full_name":"Schmid, Hans-Joachim","id":"464","orcid":"000-0001-8590-1921","last_name":"Schmid","first_name":"Hans-Joachim"}],"volume":6,"publisher":"SAGE Publications","date_updated":"2026-02-19T14:21:49Z","doi":"10.1155/2014/185374","title":"A method to characterize the quality of a polymer laser sintering process ","publication_identifier":{"issn":["1687-8140"]},"citation":{"ieee":"S. Rüsenberg, S. Josupeit, and H.-J. Schmid, “A method to characterize the quality of a polymer laser sintering process ,” <i>Advances in Mechanical Engineering</i>, vol. 6, Art. no. 185374, 2014, doi: <a href=\"https://doi.org/10.1155/2014/185374\">10.1155/2014/185374</a>.","chicago":"Rüsenberg, Stefan, Stefan Josupeit, and Hans-Joachim Schmid. “A Method to Characterize the Quality of a Polymer Laser Sintering Process .” <i>Advances in Mechanical Engineering</i> 6 (2014). <a href=\"https://doi.org/10.1155/2014/185374\">https://doi.org/10.1155/2014/185374</a>.","ama":"Rüsenberg S, Josupeit S, Schmid H-J. A method to characterize the quality of a polymer laser sintering process . <i>Advances in Mechanical Engineering</i>. 2014;6. doi:<a href=\"https://doi.org/10.1155/2014/185374\">10.1155/2014/185374</a>","apa":"Rüsenberg, S., Josupeit, S., &#38; Schmid, H.-J. (2014). A method to characterize the quality of a polymer laser sintering process . <i>Advances in Mechanical Engineering</i>, <i>6</i>, Article 185374. <a href=\"https://doi.org/10.1155/2014/185374\">https://doi.org/10.1155/2014/185374</a>","short":"S. Rüsenberg, S. Josupeit, H.-J. Schmid, Advances in Mechanical Engineering 6 (2014).","mla":"Rüsenberg, Stefan, et al. “A Method to Characterize the Quality of a Polymer Laser Sintering Process .” <i>Advances in Mechanical Engineering</i>, vol. 6, 185374, SAGE Publications, 2014, doi:<a href=\"https://doi.org/10.1155/2014/185374\">10.1155/2014/185374</a>.","bibtex":"@article{Rüsenberg_Josupeit_Schmid_2014, title={A method to characterize the quality of a polymer laser sintering process }, volume={6}, DOI={<a href=\"https://doi.org/10.1155/2014/185374\">10.1155/2014/185374</a>}, number={185374}, journal={Advances in Mechanical Engineering}, publisher={SAGE Publications}, author={Rüsenberg, Stefan and Josupeit, Stefan and Schmid, Hans-Joachim}, year={2014} }"},"intvolume":"         6","year":"2014","user_id":"14972","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"_id":"22186","language":[{"iso":"eng"}],"article_number":"185374","type":"journal_article","publication":"Advances in Mechanical Engineering","status":"public","abstract":[{"lang":"eng","text":"The reproducibility and reliability of quality aspects are an important challenge of the polymer laser sintering process. However, existing quality concepts and standardization activities considering influencing factors along the whole process chain have not been validated experimentally yet. In this work, these factors are analyzed and kept constant to obtain a reliable material data set for different layer thicknesses and testing temperatures. In addition, material qualities regarding powder ageing effects are analyzed using different build heights and layer thicknesses: while an increase of the layer thickness reduces mechanical part strength and density, it also results in a less intense thermal ageing of unmolten powder due to shorter build times."}]},{"date_updated":"2022-01-06T06:55:28Z","volume":24,"date_created":"2021-05-14T07:46:04Z","author":[{"first_name":"Stefan","full_name":"Josupeit, Stefan","last_name":"Josupeit"},{"first_name":"Stefan","last_name":"Rüsenberg","full_name":"Rüsenberg, Stefan"},{"last_name":"Schmid","full_name":"Schmid, Hans-Joachim","id":"464","first_name":"Hans-Joachim"}],"title":"A material-based quality concept for polymer laser sintering","doi":"http://utw10945.utweb.utexas.edu/Manuscripts/2013/2013-03-Josupeit.pdf","year":"2013","page":"44-54","intvolume":"        24","citation":{"chicago":"Josupeit, Stefan, Stefan Rüsenberg, and Hans-Joachim Schmid. “A Material-Based Quality Concept for Polymer Laser Sintering.” In <i>24th Annual International Solid Freeform Fabrication Symposium </i>, 24:44–54, 2013. <a href=\"http://utw10945.utweb.utexas.edu/Manuscripts/2013/2013-03-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/Manuscripts/2013/2013-03-Josupeit.pdf</a>.","ieee":"S. Josupeit, S. Rüsenberg, and H.-J. Schmid, “A material-based quality concept for polymer laser sintering,” in <i>24th Annual International Solid Freeform Fabrication Symposium </i>, 2013, vol. 24, pp. 44–54.","ama":"Josupeit S, Rüsenberg S, Schmid H-J. A material-based quality concept for polymer laser sintering. In: <i>24th Annual International Solid Freeform Fabrication Symposium </i>. Vol 24. ; 2013:44-54. doi:<a href=\"http://utw10945.utweb.utexas.edu/Manuscripts/2013/2013-03-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/Manuscripts/2013/2013-03-Josupeit.pdf</a>","mla":"Josupeit, Stefan, et al. “A Material-Based Quality Concept for Polymer Laser Sintering.” <i>24th Annual International Solid Freeform Fabrication Symposium </i>, vol. 24, 2013, pp. 44–54, doi:<a href=\"http://utw10945.utweb.utexas.edu/Manuscripts/2013/2013-03-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/Manuscripts/2013/2013-03-Josupeit.pdf</a>.","bibtex":"@inproceedings{Josupeit_Rüsenberg_Schmid_2013, title={A material-based quality concept for polymer laser sintering}, volume={24}, DOI={<a href=\"http://utw10945.utweb.utexas.edu/Manuscripts/2013/2013-03-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/Manuscripts/2013/2013-03-Josupeit.pdf</a>}, booktitle={24th Annual International Solid Freeform Fabrication Symposium }, author={Josupeit, Stefan and Rüsenberg, Stefan and Schmid, Hans-Joachim}, year={2013}, pages={44–54} }","short":"S. Josupeit, S. Rüsenberg, H.-J. Schmid, in: 24th Annual International Solid Freeform Fabrication Symposium , 2013, pp. 44–54.","apa":"Josupeit, S., Rüsenberg, S., &#38; Schmid, H.-J. (2013). A material-based quality concept for polymer laser sintering. In <i>24th Annual International Solid Freeform Fabrication Symposium </i> (Vol. 24, pp. 44–54). <a href=\"http://utw10945.utweb.utexas.edu/Manuscripts/2013/2013-03-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/Manuscripts/2013/2013-03-Josupeit.pdf</a>"},"_id":"22175","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"user_id":"71545","language":[{"iso":"eng"}],"publication":"24th Annual International Solid Freeform Fabrication Symposium ","type":"conference","abstract":[{"text":"In this work, the quality of laser sintered parts is investigated along a defined process chain for a nylon 12 material (PA 2200) on an EOSINT P395 laser sintering system. Important influencing factors are figured out. Rheological powder characterization methods are investigated as well as mechanical, physical and other chosen part properties. The concept allows reproducible part quality characteristics and is used to obtain (testing) temperature dependent material data. It can also be extended on further materials based on nylon 12: PA 2241 FR, which is convenient for the aircraft industry due to its flame-retardant properties, and PA 2221, which has economic advantages due to a lower material consumption.","lang":"eng"}],"status":"public"},{"publication":"International Conference of the Polymer-Processing-Society (PPS)","type":"conference","status":"public","abstract":[{"text":"Laser Sintering is a powder based additive manufacturing technology. The amount of used powder, which is not sintered, can be refreshed and used for further building jobs. Due to cost reduction, better mechanical properties and a simpler processing it is reasonable to combine virgin and used powder for part manufacturing. During the building time the powder is thermally loaded and its structure is changed. State of the art in laser sintering is a defined powder ratio. Since the powder ageing depends on the individual history of sintering, this procedure cannot ensure a defined powder quality. However, for a serial production it is necessary to characterize the raw material, as well as all other steps along the process chain, in order to ensure a high reproducibility and reliability. Rheological, physical and particle properties are considered to correlate powder and chosen material properties. Different powder qualities adjusted by the Melt Volume Rate (MVR) are tested using promising rheological properties like viscosity or molecular weight. Investigations about powder bed density, bulk properties as well as thermal characterization complement the experimental setup. These parameters are correlated with mechanical, electrical, thermal and physical material properties of laser sintered parts. The most important influencing factors along the process chain are kept constant. At the end a procedure is shown to obtain a defined powder quality. This procedure will be transferred to other materials and will be tested using other laser sintering machines of the same type as well as other types.","lang":"eng"}],"department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"user_id":"71545","_id":"22192","language":[{"iso":"eng"}],"intvolume":"        29","citation":{"apa":"Rüsenberg, S., &#38; Schmid, H.-J. (2013). Advanced characterization method of Nylon 12 materials for application in laser sinter processing. In <i>International Conference of the Polymer-Processing-Society (PPS)</i> (Vol. 29). <a href=\"https://doi.org/10.1063/1.4873877\">https://doi.org/10.1063/1.4873877</a>","short":"S. Rüsenberg, H.-J. Schmid, in: International Conference of the Polymer-Processing-Society (PPS), 2013.","mla":"Rüsenberg, Stefan, and Hans-Joachim Schmid. “Advanced Characterization Method of Nylon 12 Materials for Application in Laser Sinter Processing.” <i>International Conference of the Polymer-Processing-Society (PPS)</i>, vol. 29, 2013, doi:<a href=\"https://doi.org/10.1063/1.4873877\">10.1063/1.4873877</a>.","bibtex":"@inproceedings{Rüsenberg_Schmid_2013, title={Advanced characterization method of Nylon 12 materials for application in laser sinter processing}, volume={29}, DOI={<a href=\"https://doi.org/10.1063/1.4873877\">10.1063/1.4873877</a>}, booktitle={International Conference of the Polymer-Processing-Society (PPS)}, author={Rüsenberg, Stefan and Schmid, Hans-Joachim}, year={2013} }","ieee":"S. Rüsenberg and H.-J. Schmid, “Advanced characterization method of Nylon 12 materials for application in laser sinter processing,” in <i>International Conference of the Polymer-Processing-Society (PPS)</i>, 2013, vol. 29.","chicago":"Rüsenberg, Stefan, and Hans-Joachim Schmid. “Advanced Characterization Method of Nylon 12 Materials for Application in Laser Sinter Processing.” In <i>International Conference of the Polymer-Processing-Society (PPS)</i>, Vol. 29, 2013. <a href=\"https://doi.org/10.1063/1.4873877\">https://doi.org/10.1063/1.4873877</a>.","ama":"Rüsenberg S, Schmid H-J. Advanced characterization method of Nylon 12 materials for application in laser sinter processing. In: <i>International Conference of the Polymer-Processing-Society (PPS)</i>. Vol 29. ; 2013. doi:<a href=\"https://doi.org/10.1063/1.4873877\">10.1063/1.4873877</a>"},"year":"2013","volume":29,"author":[{"first_name":"Stefan","last_name":"Rüsenberg","full_name":"Rüsenberg, Stefan"},{"id":"464","full_name":"Schmid, Hans-Joachim","last_name":"Schmid","first_name":"Hans-Joachim"}],"date_created":"2021-05-14T07:46:24Z","date_updated":"2022-01-06T06:55:28Z","doi":"10.1063/1.4873877","title":"Advanced characterization method of Nylon 12 materials for application in laser sinter processing"},{"year":"2013","citation":{"apa":"Josupeit, S., Rüsenberg, S., &#38; Schmid, H.-J. (2013). Mechanische und rheologische Untersuchungen neuer Laser Sinter Materialien. In <i>Merseburger Rapid Prototyping Forum</i> (Vol. 7). <a href=\"https://www.rp-netzwerk.de/images/stories/pdf/rapid_7/Universitaet_Paderborn_DMRC_RP-Forum2013.pdf\">https://www.rp-netzwerk.de/images/stories/pdf/rapid_7/Universitaet_Paderborn_DMRC_RP-Forum2013.pdf</a>","short":"S. Josupeit, S. Rüsenberg, H.-J. Schmid, in: Merseburger Rapid Prototyping Forum, 2013.","bibtex":"@inproceedings{Josupeit_Rüsenberg_Schmid_2013, title={Mechanische und rheologische Untersuchungen neuer Laser Sinter Materialien}, volume={7}, DOI={<a href=\"https://www.rp-netzwerk.de/images/stories/pdf/rapid_7/Universitaet_Paderborn_DMRC_RP-Forum2013.pdf\">https://www.rp-netzwerk.de/images/stories/pdf/rapid_7/Universitaet_Paderborn_DMRC_RP-Forum2013.pdf</a>}, booktitle={Merseburger Rapid Prototyping Forum}, author={Josupeit, Stefan and Rüsenberg, Stefan and Schmid, Hans-Joachim}, year={2013} }","mla":"Josupeit, Stefan, et al. “Mechanische Und Rheologische Untersuchungen Neuer Laser Sinter Materialien.” <i>Merseburger Rapid Prototyping Forum</i>, vol. 7, 2013, doi:<a href=\"https://www.rp-netzwerk.de/images/stories/pdf/rapid_7/Universitaet_Paderborn_DMRC_RP-Forum2013.pdf\">https://www.rp-netzwerk.de/images/stories/pdf/rapid_7/Universitaet_Paderborn_DMRC_RP-Forum2013.pdf</a>.","ama":"Josupeit S, Rüsenberg S, Schmid H-J. Mechanische und rheologische Untersuchungen neuer Laser Sinter Materialien. In: <i>Merseburger Rapid Prototyping Forum</i>. Vol 7. ; 2013. doi:<a href=\"https://www.rp-netzwerk.de/images/stories/pdf/rapid_7/Universitaet_Paderborn_DMRC_RP-Forum2013.pdf\">https://www.rp-netzwerk.de/images/stories/pdf/rapid_7/Universitaet_Paderborn_DMRC_RP-Forum2013.pdf</a>","ieee":"S. Josupeit, S. Rüsenberg, and H.-J. Schmid, “Mechanische und rheologische Untersuchungen neuer Laser Sinter Materialien,” in <i>Merseburger Rapid Prototyping Forum</i>, 2013, vol. 7.","chicago":"Josupeit, Stefan, Stefan Rüsenberg, and Hans-Joachim Schmid. “Mechanische Und Rheologische Untersuchungen Neuer Laser Sinter Materialien.” In <i>Merseburger Rapid Prototyping Forum</i>, Vol. 7, 2013. <a href=\"https://www.rp-netzwerk.de/images/stories/pdf/rapid_7/Universitaet_Paderborn_DMRC_RP-Forum2013.pdf\">https://www.rp-netzwerk.de/images/stories/pdf/rapid_7/Universitaet_Paderborn_DMRC_RP-Forum2013.pdf</a>."},"intvolume":"         7","date_updated":"2022-01-06T06:55:28Z","author":[{"full_name":"Josupeit, Stefan","last_name":"Josupeit","first_name":"Stefan"},{"first_name":"Stefan","full_name":"Rüsenberg, Stefan","last_name":"Rüsenberg"},{"last_name":"Schmid","id":"464","full_name":"Schmid, Hans-Joachim","first_name":"Hans-Joachim"}],"date_created":"2021-05-14T07:46:29Z","volume":7,"title":"Mechanische und rheologische Untersuchungen neuer Laser Sinter Materialien","doi":"https://www.rp-netzwerk.de/images/stories/pdf/rapid_7/Universitaet_Paderborn_DMRC_RP-Forum2013.pdf","type":"conference","publication":"Merseburger Rapid Prototyping Forum","status":"public","_id":"22197","user_id":"71545","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"language":[{"iso":"eng"}]},{"publication":"RapidTech","type":"conference","status":"public","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"user_id":"71545","_id":"22201","language":[{"iso":"eng"}],"citation":{"apa":"Rüsenberg, S., Bagsik, A., Büsching, J., &#38; Schmid, H.-J. (2013). Additiv versus Konventionell: Benchmarking am Beispiel eines Designs aus der Luftfahrtindustrie. In <i>RapidTech</i>.","mla":"Rüsenberg, Stefan, et al. “Additiv versus Konventionell: Benchmarking Am Beispiel Eines Designs Aus Der Luftfahrtindustrie.” <i>RapidTech</i>, 2013.","bibtex":"@inproceedings{Rüsenberg_Bagsik_Büsching_Schmid_2013, title={Additiv versus Konventionell: Benchmarking am Beispiel eines Designs aus der Luftfahrtindustrie}, booktitle={RapidTech}, author={Rüsenberg, Stefan and Bagsik, A. and Büsching, J. and Schmid, Hans-Joachim}, year={2013} }","short":"S. Rüsenberg, A. Bagsik, J. Büsching, H.-J. Schmid, in: RapidTech, 2013.","chicago":"Rüsenberg, Stefan, A. Bagsik, J. Büsching, and Hans-Joachim Schmid. “Additiv versus Konventionell: Benchmarking Am Beispiel Eines Designs Aus Der Luftfahrtindustrie.” In <i>RapidTech</i>, 2013.","ieee":"S. Rüsenberg, A. Bagsik, J. Büsching, and H.-J. Schmid, “Additiv versus Konventionell: Benchmarking am Beispiel eines Designs aus der Luftfahrtindustrie,” in <i>RapidTech</i>, 2013.","ama":"Rüsenberg S, Bagsik A, Büsching J, Schmid H-J. Additiv versus Konventionell: Benchmarking am Beispiel eines Designs aus der Luftfahrtindustrie. In: <i>RapidTech</i>. ; 2013."},"year":"2013","author":[{"first_name":"Stefan","last_name":"Rüsenberg","full_name":"Rüsenberg, Stefan"},{"last_name":"Bagsik","full_name":"Bagsik, A.","first_name":"A."},{"first_name":"J.","full_name":"Büsching, J.","last_name":"Büsching"},{"first_name":"Hans-Joachim","last_name":"Schmid","full_name":"Schmid, Hans-Joachim","id":"464"}],"date_created":"2021-05-14T07:46:34Z","date_updated":"2022-01-06T06:55:29Z","title":"Additiv versus Konventionell: Benchmarking am Beispiel eines Designs aus der Luftfahrtindustrie"},{"status":"public","type":"dissertation","language":[{"iso":"ger"}],"department":[{"_id":"150"}],"series_title":"Schriftenreihe Lehrstuhl für Partikelverfahrenstechnik","user_id":"98856","_id":"42132","page":"168","intvolume":"         1","citation":{"mla":"Gerkens, Stefan. <i>In-situ Strukturcharakterisierung von CNT in polymerbasierten Nanokompositen Methodenentwicklung und Anwendung</i>. 2013.","bibtex":"@book{Gerkens_2013, place={Aachen}, series={Schriftenreihe Lehrstuhl für Partikelverfahrenstechnik}, title={In-situ Strukturcharakterisierung von CNT in polymerbasierten Nanokompositen Methodenentwicklung und Anwendung}, volume={1}, author={Gerkens, Stefan}, year={2013}, collection={Schriftenreihe Lehrstuhl für Partikelverfahrenstechnik} }","short":"S. Gerkens, In-situ Strukturcharakterisierung von CNT in polymerbasierten Nanokompositen Methodenentwicklung und Anwendung, Aachen, 2013.","apa":"Gerkens, S. (2013). <i>In-situ Strukturcharakterisierung von CNT in polymerbasierten Nanokompositen Methodenentwicklung und Anwendung</i> (Vol. 1).","ama":"Gerkens S. <i>In-situ Strukturcharakterisierung von CNT in polymerbasierten Nanokompositen Methodenentwicklung und Anwendung</i>. Vol 1.; 2013.","chicago":"Gerkens, Stefan. <i>In-situ Strukturcharakterisierung von CNT in polymerbasierten Nanokompositen Methodenentwicklung und Anwendung</i>. Vol. 1. Schriftenreihe Lehrstuhl für Partikelverfahrenstechnik. Aachen, 2013.","ieee":"S. Gerkens, <i>In-situ Strukturcharakterisierung von CNT in polymerbasierten Nanokompositen Methodenentwicklung und Anwendung</i>, vol. 1. Aachen, 2013."},"year":"2013","place":"Aachen","publication_identifier":{"isbn":["978-3-8440-2421-0"]},"publication_status":"published","title":"In-situ Strukturcharakterisierung von CNT in polymerbasierten Nanokompositen Methodenentwicklung und Anwendung","volume":1,"author":[{"first_name":"Stefan","full_name":"Gerkens, Stefan","last_name":"Gerkens"}],"supervisor":[{"orcid":"000-0001-8590-1921","last_name":"Schmid","id":"464","full_name":"Schmid, Hans-Joachim","first_name":"Hans-Joachim"}],"date_created":"2023-02-15T08:49:13Z","date_updated":"2023-02-28T11:06:17Z"},{"title":"Controlling the Quality of Laser Sintered Parts Along the Process Chain","doi":"http://utw10945.utweb.utexas.edu/Manuscripts/2012/2012-78-Ruesenberg.pdf","date_updated":"2022-01-06T06:55:28Z","date_created":"2021-05-14T07:46:03Z","author":[{"last_name":"Rüsenberg","full_name":"Rüsenberg, Stefan","first_name":"Stefan"},{"first_name":"R.","last_name":"Weiffen","full_name":"Weiffen, R."},{"first_name":"F.","last_name":"Knoop","full_name":"Knoop, F."},{"first_name":"Hans-Joachim","last_name":"Schmid","full_name":"Schmid, Hans-Joachim","id":"464"}],"volume":23,"year":"2012","citation":{"chicago":"Rüsenberg, Stefan, R. Weiffen, F. Knoop, and Hans-Joachim Schmid. “Controlling the Quality of Laser Sintered Parts Along the Process Chain.” In <i>23rd Annual International Solid Freeform Fabrication Symposium</i>, 23:1024–44, 2012. <a href=\"http://utw10945.utweb.utexas.edu/Manuscripts/2012/2012-78-Ruesenberg.pdf\">http://utw10945.utweb.utexas.edu/Manuscripts/2012/2012-78-Ruesenberg.pdf</a>.","ieee":"S. Rüsenberg, R. Weiffen, F. Knoop, and H.-J. Schmid, “Controlling the Quality of Laser Sintered Parts Along the Process Chain,” in <i>23rd Annual International Solid Freeform Fabrication Symposium</i>, 2012, vol. 23, pp. 1024–1044.","ama":"Rüsenberg S, Weiffen R, Knoop F, Schmid H-J. Controlling the Quality of Laser Sintered Parts Along the Process Chain. In: <i>23rd Annual International Solid Freeform Fabrication Symposium</i>. Vol 23. ; 2012:1024-1044. doi:<a href=\"http://utw10945.utweb.utexas.edu/Manuscripts/2012/2012-78-Ruesenberg.pdf\">http://utw10945.utweb.utexas.edu/Manuscripts/2012/2012-78-Ruesenberg.pdf</a>","bibtex":"@inproceedings{Rüsenberg_Weiffen_Knoop_Schmid_2012, title={Controlling the Quality of Laser Sintered Parts Along the Process Chain}, volume={23}, DOI={<a href=\"http://utw10945.utweb.utexas.edu/Manuscripts/2012/2012-78-Ruesenberg.pdf\">http://utw10945.utweb.utexas.edu/Manuscripts/2012/2012-78-Ruesenberg.pdf</a>}, booktitle={23rd Annual International Solid Freeform Fabrication Symposium}, author={Rüsenberg, Stefan and Weiffen, R. and Knoop, F. and Schmid, Hans-Joachim}, year={2012}, pages={1024–1044} }","short":"S. Rüsenberg, R. Weiffen, F. Knoop, H.-J. Schmid, in: 23rd Annual International Solid Freeform Fabrication Symposium, 2012, pp. 1024–1044.","mla":"Rüsenberg, Stefan, et al. “Controlling the Quality of Laser Sintered Parts Along the Process Chain.” <i>23rd Annual International Solid Freeform Fabrication Symposium</i>, vol. 23, 2012, pp. 1024–44, doi:<a href=\"http://utw10945.utweb.utexas.edu/Manuscripts/2012/2012-78-Ruesenberg.pdf\">http://utw10945.utweb.utexas.edu/Manuscripts/2012/2012-78-Ruesenberg.pdf</a>.","apa":"Rüsenberg, S., Weiffen, R., Knoop, F., &#38; Schmid, H.-J. (2012). Controlling the Quality of Laser Sintered Parts Along the Process Chain. In <i>23rd Annual International Solid Freeform Fabrication Symposium</i> (Vol. 23, pp. 1024–1044). <a href=\"http://utw10945.utweb.utexas.edu/Manuscripts/2012/2012-78-Ruesenberg.pdf\">http://utw10945.utweb.utexas.edu/Manuscripts/2012/2012-78-Ruesenberg.pdf</a>"},"intvolume":"        23","page":"1024-1044","language":[{"iso":"eng"}],"_id":"22174","user_id":"71545","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"abstract":[{"lang":"eng","text":"The quality of laser sintered parts, in this work, manufactured by polymer laser sintering by using an EOSINT P395 Laser Sintering system, depends on several steps along the process chain. The first step is the characterization of the powder quality, whereas the rheological and physical investigations of nylon 12 powder are shown. By changing some important influencing factors, for example the powder ratio, the powder ageing and the moisture content, the influence on mechanical and physical properties, density and porosity, are investigated. The composition of the used powder is known. The previous process (storage conditions, etc.) as well as the laser sintering process (regarding energy density, temperature, etc.) is kept constant for the duration of this work. Regarding the post process in this work the cooling down phase is investigated as well. With an automatically blasting system it is possible to keep the post process parameters blasting distance and blasting time, constant. All of the tests will be performed using dry and conditioned test specimens. This work is showing the dependence on mechanical, rheological and physical parameters by varying important influencing factors along the laser sintering process quality chain."}],"status":"public","type":"conference","publication":"23rd Annual International Solid Freeform Fabrication Symposium"},{"type":"conference","publication":"The European Forum on Additive Manufacturing","abstract":[{"text":"Material properties of parts from additive manufacturing are influenced by a huge number of material, operational and job parameters. This work aims to identify the most important ones and to investigate mechanical properties as depending on those parameters. Test specimens were produced with standard PA12 powder on an EOSINT P390 and P395, respectively. The influence of the orientation and placement of parts in the building chamber were investigated systematically. The mechanical properties","lang":"eng"}],"status":"public","_id":"22204","user_id":"71545","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"language":[{"iso":"eng"}],"year":"2012","citation":{"chicago":"Rüsenberg, Stefan, and Hans-Joachim Schmid. “Mechanical Properties as a Result of Multitude of Parameters.” In <i>The European Forum on Additive Manufacturing</i>, Vol. 17, 2012. <a href=\"https://afpr.asso.fr/content/assises/2012/actes/papiers/s5_2.pdf\">https://afpr.asso.fr/content/assises/2012/actes/papiers/s5_2.pdf</a>.","ieee":"S. Rüsenberg and H.-J. Schmid, “Mechanical Properties as a Result of multitude of Parameters,” in <i>The European Forum on Additive Manufacturing</i>, 2012, vol. 17.","ama":"Rüsenberg S, Schmid H-J. Mechanical Properties as a Result of multitude of Parameters. In: <i>The European Forum on Additive Manufacturing</i>. Vol 17. ; 2012. doi:<a href=\"https://afpr.asso.fr/content/assises/2012/actes/papiers/s5_2.pdf\">https://afpr.asso.fr/content/assises/2012/actes/papiers/s5_2.pdf</a>","apa":"Rüsenberg, S., &#38; Schmid, H.-J. (2012). Mechanical Properties as a Result of multitude of Parameters. In <i>The European Forum on Additive Manufacturing</i> (Vol. 17). <a href=\"https://afpr.asso.fr/content/assises/2012/actes/papiers/s5_2.pdf\">https://afpr.asso.fr/content/assises/2012/actes/papiers/s5_2.pdf</a>","bibtex":"@inproceedings{Rüsenberg_Schmid_2012, title={Mechanical Properties as a Result of multitude of Parameters}, volume={17}, DOI={<a href=\"https://afpr.asso.fr/content/assises/2012/actes/papiers/s5_2.pdf\">https://afpr.asso.fr/content/assises/2012/actes/papiers/s5_2.pdf</a>}, booktitle={The European Forum on Additive Manufacturing}, author={Rüsenberg, Stefan and Schmid, Hans-Joachim}, year={2012} }","mla":"Rüsenberg, Stefan, and Hans-Joachim Schmid. “Mechanical Properties as a Result of Multitude of Parameters.” <i>The European Forum on Additive Manufacturing</i>, vol. 17, 2012, doi:<a href=\"https://afpr.asso.fr/content/assises/2012/actes/papiers/s5_2.pdf\">https://afpr.asso.fr/content/assises/2012/actes/papiers/s5_2.pdf</a>.","short":"S. Rüsenberg, H.-J. Schmid, in: The European Forum on Additive Manufacturing, 2012."},"intvolume":"        17","date_updated":"2022-01-06T06:55:29Z","author":[{"first_name":"Stefan","last_name":"Rüsenberg","full_name":"Rüsenberg, Stefan"},{"last_name":"Schmid","id":"464","full_name":"Schmid, Hans-Joachim","first_name":"Hans-Joachim"}],"date_created":"2021-05-14T07:46:38Z","volume":17,"title":"Mechanical Properties as a Result of multitude of Parameters","doi":"https://afpr.asso.fr/content/assises/2012/actes/papiers/s5_2.pdf"},{"date_updated":"2022-01-06T06:55:28Z","date_created":"2021-05-14T07:46:19Z","author":[{"full_name":"Rüsenberg, Stefan","last_name":"Rüsenberg","first_name":"Stefan"},{"full_name":"Schmidt, L.","last_name":"Schmidt","first_name":"L."},{"first_name":"Hans-Joachim","last_name":"Schmid","full_name":"Schmid, Hans-Joachim","id":"464"}],"volume":22,"title":"Mechanical and Physical Properties - A Way to asses quality of Laser Sintered Parts","doi":"http://utw10945.utweb.utexas.edu/Manuscripts/2011/2011-19-Ruesenberg.pdf","year":"2011","citation":{"ama":"Rüsenberg S, Schmidt L, Schmid H-J. Mechanical and Physical Properties - A Way to asses quality of Laser Sintered Parts. In: <i>22th Annual International Solid Freeform Fabrication Symposium</i>. Vol 22. ; 2011:239-251. doi:<a href=\"http://utw10945.utweb.utexas.edu/Manuscripts/2011/2011-19-Ruesenberg.pdf\">http://utw10945.utweb.utexas.edu/Manuscripts/2011/2011-19-Ruesenberg.pdf</a>","chicago":"Rüsenberg, Stefan, L. Schmidt, and Hans-Joachim Schmid. “Mechanical and Physical Properties - A Way to Asses Quality of Laser Sintered Parts.” In <i>22th Annual International Solid Freeform Fabrication Symposium</i>, 22:239–51, 2011. <a href=\"http://utw10945.utweb.utexas.edu/Manuscripts/2011/2011-19-Ruesenberg.pdf\">http://utw10945.utweb.utexas.edu/Manuscripts/2011/2011-19-Ruesenberg.pdf</a>.","ieee":"S. Rüsenberg, L. Schmidt, and H.-J. Schmid, “Mechanical and Physical Properties - A Way to asses quality of Laser Sintered Parts,” in <i>22th Annual International Solid Freeform Fabrication Symposium</i>, 2011, vol. 22, pp. 239–251.","apa":"Rüsenberg, S., Schmidt, L., &#38; Schmid, H.-J. (2011). Mechanical and Physical Properties - A Way to asses quality of Laser Sintered Parts. In <i>22th Annual International Solid Freeform Fabrication Symposium</i> (Vol. 22, pp. 239–251). <a href=\"http://utw10945.utweb.utexas.edu/Manuscripts/2011/2011-19-Ruesenberg.pdf\">http://utw10945.utweb.utexas.edu/Manuscripts/2011/2011-19-Ruesenberg.pdf</a>","mla":"Rüsenberg, Stefan, et al. “Mechanical and Physical Properties - A Way to Asses Quality of Laser Sintered Parts.” <i>22th Annual International Solid Freeform Fabrication Symposium</i>, vol. 22, 2011, pp. 239–51, doi:<a href=\"http://utw10945.utweb.utexas.edu/Manuscripts/2011/2011-19-Ruesenberg.pdf\">http://utw10945.utweb.utexas.edu/Manuscripts/2011/2011-19-Ruesenberg.pdf</a>.","bibtex":"@inproceedings{Rüsenberg_Schmidt_Schmid_2011, title={Mechanical and Physical Properties - A Way to asses quality of Laser Sintered Parts}, volume={22}, DOI={<a href=\"http://utw10945.utweb.utexas.edu/Manuscripts/2011/2011-19-Ruesenberg.pdf\">http://utw10945.utweb.utexas.edu/Manuscripts/2011/2011-19-Ruesenberg.pdf</a>}, booktitle={22th Annual International Solid Freeform Fabrication Symposium}, author={Rüsenberg, Stefan and Schmidt, L. and Schmid, Hans-Joachim}, year={2011}, pages={239–251} }","short":"S. Rüsenberg, L. Schmidt, H.-J. Schmid, in: 22th Annual International Solid Freeform Fabrication Symposium, 2011, pp. 239–251."},"intvolume":"        22","page":"239-251","_id":"22188","user_id":"71545","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"language":[{"iso":"eng"}],"type":"conference","publication":"22th Annual International Solid Freeform Fabrication Symposium","abstract":[{"lang":"eng","text":"The aim of this paper is the description and evaluation of physical properties like porosity and density and their influence on mechanical properties of laser sintered polyamide parts. For example, by reducing the porosity an increase of mechanical properties is possible. The correlation of laser parameters to these properties is investigated in detail. The energy density is an important parameter for the laser sintering process. By changing laser power, scan velocity and hatch distance an influence on manufactured components is given. A systematic variation of all three laser parameters is performed. A comparison of results obtained at constant energy densities obtained by varying these relevant parameters accordingly is shown as well."}],"status":"public"},{"publication_identifier":{"isbn":["978-0-429-21774-6"]},"year":"2011","page":"531-538","citation":{"apa":"Rüsenberg, S., Schmidt, L., Hosse, H., &#38; Schmid, H.-J. (2011). <i>Porosity as a key to increase material properties of laser sintered parts</i> (pp. 531–538). <a href=\"https://doi.org/10.1201/b11341\">https://doi.org/10.1201/b11341</a>","mla":"Rüsenberg, Stefan, et al. <i>Porosity as a Key to Increase Material Properties of Laser Sintered Parts</i>. 2011, pp. 531–38, doi:<a href=\"https://doi.org/10.1201/b11341\">10.1201/b11341</a>.","short":"S. Rüsenberg, L. Schmidt, H. Hosse, H.-J. Schmid, Porosity as a Key to Increase Material Properties of Laser Sintered Parts, 2011.","bibtex":"@book{Rüsenberg_Schmidt_Hosse_Schmid_2011, title={Porosity as a key to increase material properties of laser sintered parts}, DOI={<a href=\"https://doi.org/10.1201/b11341\">10.1201/b11341</a>}, author={Rüsenberg, Stefan and Schmidt, L. and Hosse, H. and Schmid, Hans-Joachim}, year={2011}, pages={531–538} }","ama":"Rüsenberg S, Schmidt L, Hosse H, Schmid H-J. <i>Porosity as a Key to Increase Material Properties of Laser Sintered Parts</i>.; 2011:531-538. doi:<a href=\"https://doi.org/10.1201/b11341\">10.1201/b11341</a>","chicago":"Rüsenberg, Stefan, L. Schmidt, H. Hosse, and Hans-Joachim Schmid. <i>Porosity as a Key to Increase Material Properties of Laser Sintered Parts</i>, 2011. <a href=\"https://doi.org/10.1201/b11341\">https://doi.org/10.1201/b11341</a>.","ieee":"S. Rüsenberg, L. Schmidt, H. Hosse, and H.-J. Schmid, <i>Porosity as a key to increase material properties of laser sintered parts</i>. 2011, pp. 531–538."},"date_updated":"2022-01-06T06:55:28Z","author":[{"first_name":"Stefan","last_name":"Rüsenberg","full_name":"Rüsenberg, Stefan"},{"last_name":"Schmidt","full_name":"Schmidt, L.","first_name":"L."},{"last_name":"Hosse","full_name":"Hosse, H.","first_name":"H."},{"last_name":"Schmid","id":"464","full_name":"Schmid, Hans-Joachim","first_name":"Hans-Joachim"}],"date_created":"2021-05-14T07:46:23Z","title":"Porosity as a key to increase material properties of laser sintered parts","doi":"10.1201/b11341","type":"book","status":"public","_id":"22191","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"user_id":"71545","language":[{"iso":"eng"}]},{"status":"public","abstract":[{"text":"Die Entwicklung neuer Konfigurationen zur Rußabscheidung in Elektrofiltern im Hinblick auf Kfz-Applikationen bedingt die Notwendigkeit, diese auch mithilfe von Simulationen bewerten zu können. Der Beitrag stellt einen neuen Ansatz zur Simulation des Abscheideprozesses für einen Temperaturbereich bis 400 Grad C vor. Entscheidend ist die Möglichkeit, das raumladungsbehaftete elektrische Feld für alle Betriebszustände zu simulieren. Für den Transport der Raumladungen wird ein Ansatz aus der Mehrphasenströmungssimulation verwendet. Die Abscheidung der Partikeln wird mithilfe eines Lagrangeschen Ansatzes modelliert, der die zeitabhängige Aufladung unter lokalen elektrischen Bedingungen berücksichtigt. Die Simulation des Gesamtprozesses wird mit experimentellen Untersuchungen anhand eines Laborabscheiders verifiziert. Simulation und Experiment stimmen gut überein. Insbesondere der dominierende Einfluss durch die Bereiche in der Nähe der Platten konnte gut abgebildet werden. Das Gleiche gilt für die parabolische Form der Strom-Spannungs-Kennlinie. Weitere Untersuchungen sind erforderlich, um die gezeigten Methoden auf die Rußabscheidung zu übertragen. Die Problematik liegt in der Charakterisierung der Rußeigenschaften in Abhängigkeit von der Rußentstehung. Auch die Randbedingungen der Methoden zur elektrischen Charakterisierung können zurzeit noch nicht auf allgemeine Fälle übertragen werden. ","lang":"ger"}],"type":"journal_article","publication":"Gefahrstoffe, Reinhaltung der Luft. Air Quality Control","extern":"1","language":[{"iso":"ger"}],"user_id":"3959","department":[{"_id":"150"}],"_id":"29827","citation":{"mla":"Schmid, Hans-Joachim. “Neuer Ansatz zur Modellierung der Abscheidung in einem modifizierten Rohrelektrofilter.” <i>Gefahrstoffe, Reinhaltung der Luft. Air Quality Control</i>, vol. 67, no. 4, 2007.","short":"H.-J. Schmid, Gefahrstoffe, Reinhaltung der Luft. Air Quality Control 67 (2007).","bibtex":"@article{Schmid_2007, title={Neuer Ansatz zur Modellierung der Abscheidung in einem modifizierten Rohrelektrofilter}, volume={67}, number={4}, journal={Gefahrstoffe, Reinhaltung der Luft. Air Quality Control}, author={Schmid, Hans-Joachim}, year={2007} }","apa":"Schmid, H.-J. (2007). Neuer Ansatz zur Modellierung der Abscheidung in einem modifizierten Rohrelektrofilter. <i>Gefahrstoffe, Reinhaltung der Luft. Air Quality Control</i>, <i>67</i>(4).","ama":"Schmid H-J. Neuer Ansatz zur Modellierung der Abscheidung in einem modifizierten Rohrelektrofilter. <i>Gefahrstoffe, Reinhaltung der Luft Air Quality Control</i>. 2007;67(4).","chicago":"Schmid, Hans-Joachim. “Neuer Ansatz zur Modellierung der Abscheidung in einem modifizierten Rohrelektrofilter.” <i>Gefahrstoffe, Reinhaltung der Luft. Air Quality Control</i> 67, no. 4 (2007).","ieee":"H.-J. Schmid, “Neuer Ansatz zur Modellierung der Abscheidung in einem modifizierten Rohrelektrofilter,” <i>Gefahrstoffe, Reinhaltung der Luft. Air Quality Control</i>, vol. 67, no. 4, 2007."},"intvolume":"        67","year":"2007","issue":"4","publication_status":"published","publication_identifier":{"issn":["0949-8036"]},"title":"Neuer Ansatz zur Modellierung der Abscheidung in einem modifizierten Rohrelektrofilter","date_created":"2022-02-14T11:39:12Z","author":[{"first_name":"Hans-Joachim","last_name":"Schmid","full_name":"Schmid, Hans-Joachim","id":"464"}],"volume":67,"date_updated":"2022-02-14T11:39:18Z"}]