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Kenig, International Journal of Heat and Mass Transfer (2015) 516–527.","bibtex":"@article{Piper_Zibart_Tran_Kenig_2015, title={Numerical investigation of turbulent forced convection heat transfer in pillow plates}, DOI={<a href=\"https://doi.org/10.1016/j.ijheatmasstransfer.2015.11.014\">10.1016/j.ijheatmasstransfer.2015.11.014</a>}, journal={International Journal of Heat and Mass Transfer}, author={Piper, M. and Zibart, A. and Tran, J.M. and Kenig, E.Y.}, year={2015}, pages={516–527} }","mla":"Piper, M., et al. “Numerical Investigation of Turbulent Forced Convection Heat Transfer in Pillow Plates.” <i>International Journal of Heat and Mass Transfer</i>, 2015, pp. 516–27, doi:<a href=\"https://doi.org/10.1016/j.ijheatmasstransfer.2015.11.014\">10.1016/j.ijheatmasstransfer.2015.11.014</a>.","ama":"Piper M, Zibart A, Tran JM, Kenig EY. Numerical investigation of turbulent forced convection heat transfer in pillow plates. <i>International Journal of Heat and Mass Transfer</i>. 2015:516-527. doi:<a href=\"https://doi.org/10.1016/j.ijheatmasstransfer.2015.11.014\">10.1016/j.ijheatmasstransfer.2015.11.014</a>","chicago":"Piper, M., A. Zibart, J.M. Tran, and E.Y. Kenig. “Numerical Investigation of Turbulent Forced Convection Heat Transfer in Pillow Plates.” <i>International Journal of Heat and Mass Transfer</i>, 2015, 516–27. <a href=\"https://doi.org/10.1016/j.ijheatmasstransfer.2015.11.014\">https://doi.org/10.1016/j.ijheatmasstransfer.2015.11.014</a>.","ieee":"M. Piper, A. Zibart, J. M. Tran, and E. Y. Kenig, “Numerical investigation of turbulent forced convection heat transfer in pillow plates,” <i>International Journal of Heat and Mass Transfer</i>, pp. 516–527, 2015."},"page":"516-527","year":"2015"},{"date_updated":"2022-01-06T06:56:04Z","author":[{"first_name":"Alexander","last_name":"Zibart","full_name":"Zibart, Alexander","id":"11029"},{"full_name":"Cherkezova, Rositsa","last_name":"Cherkezova","first_name":"Rositsa"},{"first_name":"Heiko ","last_name":"Figge","full_name":"Figge, Heiko "},{"first_name":"Eugeny","id":"665","full_name":"Kenig, Eugeny","last_name":"Kenig"}],"date_created":"2021-09-08T11:15:32Z","title":"Optimierung der Kühlung eines On-Board-Ladegeräts für elektrisch betriebene Kraftfahrzeuge mithilfe der CFD-Methoden","conference":{"name":"Jahrestreffen der ProcessNet-Fachgemeinschaft Fluiddynamik und Trenntechnik","location":"Bamberg"},"doi":"10.1002/cite.201550048","year":"2015","citation":{"chicago":"Zibart, Alexander, Rositsa Cherkezova, Heiko  Figge, and Eugeny Kenig. “Optimierung Der Kühlung Eines On-Board-Ladegeräts Für Elektrisch Betriebene Kraftfahrzeuge Mithilfe Der CFD-Methoden,” 2015. <a href=\"https://doi.org/10.1002/cite.201550048\">https://doi.org/10.1002/cite.201550048</a>.","ieee":"A. Zibart, R. Cherkezova, H. Figge, and E. Kenig, “Optimierung der Kühlung eines On-Board-Ladegeräts für elektrisch betriebene Kraftfahrzeuge mithilfe der CFD-Methoden,” presented at the Jahrestreffen der ProcessNet-Fachgemeinschaft Fluiddynamik und Trenntechnik, Bamberg, 2015.","ama":"Zibart A, Cherkezova R, Figge H, Kenig E. Optimierung der Kühlung eines On-Board-Ladegeräts für elektrisch betriebene Kraftfahrzeuge mithilfe der CFD-Methoden. In: ; 2015. doi:<a href=\"https://doi.org/10.1002/cite.201550048\">10.1002/cite.201550048</a>","mla":"Zibart, Alexander, et al. <i>Optimierung Der Kühlung Eines On-Board-Ladegeräts Für Elektrisch Betriebene Kraftfahrzeuge Mithilfe Der CFD-Methoden</i>. 2015, doi:<a href=\"https://doi.org/10.1002/cite.201550048\">10.1002/cite.201550048</a>.","short":"A. Zibart, R. Cherkezova, H. Figge, E. Kenig, in: 2015.","bibtex":"@inproceedings{Zibart_Cherkezova_Figge_Kenig_2015, title={Optimierung der Kühlung eines On-Board-Ladegeräts für elektrisch betriebene Kraftfahrzeuge mithilfe der CFD-Methoden}, DOI={<a href=\"https://doi.org/10.1002/cite.201550048\">10.1002/cite.201550048</a>}, author={Zibart, Alexander and Cherkezova, Rositsa and Figge, Heiko  and Kenig, Eugeny}, year={2015} }","apa":"Zibart, A., Cherkezova, R., Figge, H., &#38; Kenig, E. (2015). Optimierung der Kühlung eines On-Board-Ladegeräts für elektrisch betriebene Kraftfahrzeuge mithilfe der CFD-Methoden. Presented at the Jahrestreffen der ProcessNet-Fachgemeinschaft Fluiddynamik und Trenntechnik, Bamberg. <a href=\"https://doi.org/10.1002/cite.201550048\">https://doi.org/10.1002/cite.201550048</a>"},"_id":"23974","project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"department":[{"_id":"9"},{"_id":"145"}],"user_id":"11029","language":[{"iso":"eng"}],"type":"conference_abstract","status":"public"},{"department":[{"_id":"143"},{"_id":"219"}],"user_id":"60486","_id":"22108","status":"public","publication":"DVM - Tagung - Additiv gefertigte Bauteile und Strukturen, Deutscher Verband für Materialforschung und -prüfung e.V.","type":"conference","title":"Einsatz additiver Fertigung zur Optimierung des Ermüdungsverhaltens von gekerbten Strukturen","author":[{"full_name":"Reschetnik, W.","last_name":"Reschetnik","first_name":"W."},{"full_name":"Riemer, A.","last_name":"Riemer","first_name":"A."},{"first_name":"H.A.","last_name":"Richard","full_name":"Richard, H.A."}],"date_created":"2021-05-11T07:47:52Z","date_updated":"2022-01-06T06:55:26Z","page":"63-72","citation":{"ieee":"W. Reschetnik, A. Riemer, and H. A. Richard, “Einsatz additiver Fertigung zur Optimierung des Ermüdungsverhaltens von gekerbten Strukturen,” in <i>DVM - Tagung - Additiv gefertigte Bauteile und Strukturen, Deutscher Verband für Materialforschung und -prüfung e.V.</i>, 2015, pp. 63–72.","chicago":"Reschetnik, W., A. Riemer, and H.A. Richard. “Einsatz Additiver Fertigung Zur Optimierung Des Ermüdungsverhaltens von Gekerbten Strukturen.” In <i>DVM - Tagung - Additiv Gefertigte Bauteile Und Strukturen, Deutscher Verband Für Materialforschung Und -Prüfung e.V.</i>, 63–72, 2015.","ama":"Reschetnik W, Riemer A, Richard HA. Einsatz additiver Fertigung zur Optimierung des Ermüdungsverhaltens von gekerbten Strukturen. In: <i>DVM - Tagung - Additiv Gefertigte Bauteile Und Strukturen, Deutscher Verband Für Materialforschung Und -Prüfung e.V.</i> ; 2015:63-72.","apa":"Reschetnik, W., Riemer, A., &#38; Richard, H. A. (2015). Einsatz additiver Fertigung zur Optimierung des Ermüdungsverhaltens von gekerbten Strukturen. In <i>DVM - Tagung - Additiv gefertigte Bauteile und Strukturen, Deutscher Verband für Materialforschung und -prüfung e.V.</i> (pp. 63–72).","mla":"Reschetnik, W., et al. “Einsatz Additiver Fertigung Zur Optimierung Des Ermüdungsverhaltens von Gekerbten Strukturen.” <i>DVM - Tagung - Additiv Gefertigte Bauteile Und Strukturen, Deutscher Verband Für Materialforschung Und -Prüfung e.V.</i>, 2015, pp. 63–72.","short":"W. Reschetnik, A. Riemer, H.A. Richard, in: DVM - Tagung - Additiv Gefertigte Bauteile Und Strukturen, Deutscher Verband Für Materialforschung Und -Prüfung e.V., 2015, pp. 63–72.","bibtex":"@inproceedings{Reschetnik_Riemer_Richard_2015, title={Einsatz additiver Fertigung zur Optimierung des Ermüdungsverhaltens von gekerbten Strukturen}, booktitle={DVM - Tagung - Additiv gefertigte Bauteile und Strukturen, Deutscher Verband für Materialforschung und -prüfung e.V.}, author={Reschetnik, W. and Riemer, A. and Richard, H.A.}, year={2015}, pages={63–72} }"},"year":"2015"},{"year":"2015","intvolume":"        26","page":"514-526","citation":{"mla":"Delfs, Patrick, et al. “Mass Finishing of Laser Sintered Parts.” <i>26th Annual International Solid Freeform Fabrication Symposium</i>, vol. 26, 2015, pp. 514–26, doi:<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-41-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-41-Delfs.pdf</a>.","short":"P. Delfs, Z. Li, H.-J. Schmid, in: 26th Annual International Solid Freeform Fabrication Symposium, 2015, pp. 514–526.","bibtex":"@inproceedings{Delfs_Li_Schmid_2015, title={Mass finishing of laser sintered parts}, volume={26}, DOI={<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-41-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-41-Delfs.pdf</a>}, booktitle={26th Annual International Solid Freeform Fabrication Symposium}, author={Delfs, Patrick and Li, Z. and Schmid, Hans-Joachim}, year={2015}, pages={514–526} }","apa":"Delfs, P., Li, Z., &#38; Schmid, H.-J. (2015). Mass finishing of laser sintered parts. In <i>26th Annual International Solid Freeform Fabrication Symposium</i> (Vol. 26, pp. 514–526). <a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-41-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-41-Delfs.pdf</a>","ama":"Delfs P, Li Z, Schmid H-J. Mass finishing of laser sintered parts. In: <i>26th Annual International Solid Freeform Fabrication Symposium</i>. Vol 26. ; 2015:514-526. doi:<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-41-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-41-Delfs.pdf</a>","chicago":"Delfs, Patrick, Z. Li, and Hans-Joachim Schmid. “Mass Finishing of Laser Sintered Parts.” In <i>26th Annual International Solid Freeform Fabrication Symposium</i>, 26:514–26, 2015. <a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-41-Delfs.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-41-Delfs.pdf</a>.","ieee":"P. Delfs, Z. Li, and H.-J. Schmid, “Mass finishing of laser sintered parts,” in <i>26th Annual International Solid Freeform Fabrication Symposium</i>, 2015, vol. 26, pp. 514–526."},"date_updated":"2022-01-06T06:55:28Z","volume":26,"date_created":"2021-05-14T07:46:07Z","author":[{"first_name":"Patrick","full_name":"Delfs, Patrick","last_name":"Delfs"},{"first_name":"Z.","full_name":"Li, Z.","last_name":"Li"},{"first_name":"Hans-Joachim","last_name":"Schmid","full_name":"Schmid, Hans-Joachim","id":"464"}],"title":"Mass finishing of laser sintered parts","doi":"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-41-Delfs.pdf","publication":"26th Annual International Solid Freeform Fabrication Symposium","type":"conference","status":"public","_id":"22178","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"user_id":"71545","language":[{"iso":"eng"}]},{"language":[{"iso":"eng"}],"_id":"22179","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"user_id":"71545","abstract":[{"text":"The temperature distribution and history within laser sintered part cakes is an important aspect regarding the process quality and reproducibility of the polymer laser sintering process. Especially the temperature history during the build and cooling phase is decisive for powder ageing effects and the development of part quality characteristics. In this work, a measurement system for three-dimensional in-process temperature measurements is set up and the influence of different parameters on the inner part cake temperature distribution and history is analyzed. Important factors are not only geometrical build job parameters like the part packing density and build height, but also process parameters like the layer thickness and bulk powder density. Individual in-process temperature profiles at different positions within a part cake are finally correlated with powder ageing effects. The results of this work help to understand the temperature history dependency of powder and part properties and can therefore be used to develop optimized process controls.","lang":"eng"}],"status":"public","publication":"26th Annual International Solid Freeform Fabrication Symposium","type":"conference","title":"Temperature History within Laser Sintered Part Cakes and its Influence on Process Quality","doi":"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-15-Josupeit.pdf","date_updated":"2022-01-06T06:55:28Z","volume":26,"date_created":"2021-05-14T07:46:09Z","author":[{"first_name":"Stefan","full_name":"Josupeit, Stefan","last_name":"Josupeit"},{"last_name":"Schmid","id":"464","full_name":"Schmid, Hans-Joachim","first_name":"Hans-Joachim"}],"year":"2015","page":"190-199","intvolume":"        26","citation":{"chicago":"Josupeit, Stefan, and Hans-Joachim Schmid. “Temperature History within Laser Sintered Part Cakes and Its Influence on Process Quality.” In <i>26th Annual International Solid Freeform Fabrication Symposium</i>, 26:190–99, 2015. <a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-15-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-15-Josupeit.pdf</a>.","ieee":"S. Josupeit and H.-J. Schmid, “Temperature History within Laser Sintered Part Cakes and its Influence on Process Quality,” in <i>26th Annual International Solid Freeform Fabrication Symposium</i>, 2015, vol. 26, pp. 190–199.","ama":"Josupeit S, Schmid H-J. Temperature History within Laser Sintered Part Cakes and its Influence on Process Quality. In: <i>26th Annual International Solid Freeform Fabrication Symposium</i>. Vol 26. ; 2015:190-199. doi:<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-15-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-15-Josupeit.pdf</a>","apa":"Josupeit, S., &#38; Schmid, H.-J. (2015). Temperature History within Laser Sintered Part Cakes and its Influence on Process Quality. In <i>26th Annual International Solid Freeform Fabrication Symposium</i> (Vol. 26, pp. 190–199). <a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-15-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-15-Josupeit.pdf</a>","mla":"Josupeit, Stefan, and Hans-Joachim Schmid. “Temperature History within Laser Sintered Part Cakes and Its Influence on Process Quality.” <i>26th Annual International Solid Freeform Fabrication Symposium</i>, vol. 26, 2015, pp. 190–99, doi:<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-15-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-15-Josupeit.pdf</a>.","bibtex":"@inproceedings{Josupeit_Schmid_2015, title={Temperature History within Laser Sintered Part Cakes and its Influence on Process Quality}, volume={26}, DOI={<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-15-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-15-Josupeit.pdf</a>}, booktitle={26th Annual International Solid Freeform Fabrication Symposium}, author={Josupeit, Stefan and Schmid, Hans-Joachim}, year={2015}, pages={190–199} }","short":"S. Josupeit, H.-J. Schmid, in: 26th Annual International Solid Freeform Fabrication Symposium, 2015, pp. 190–199."}},{"intvolume":"        26","page":"540-549","citation":{"ama":"Josupeit S, Lohn J, Hermann E, Gessler M, Tenbrink S, Schmid H-J. Material Properties of Laser Sintered Polyamide 12 as Function of Build Cycles Using Low Refresh Rates. In: <i>26th Annual International Solid Freeform Fabrication Symposium</i>. Vol 26. ; 2015:540-549. doi:<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-43-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-43-Josupeit.pdf</a>","chicago":"Josupeit, Stefan, Johannes Lohn, E. Hermann, Monika Gessler, S. Tenbrink, and Hans-Joachim Schmid. “Material Properties of Laser Sintered Polyamide 12 as Function of Build Cycles Using Low Refresh Rates.” In <i>26th Annual International Solid Freeform Fabrication Symposium</i>, 26:540–49, 2015. <a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-43-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-43-Josupeit.pdf</a>.","ieee":"S. Josupeit, J. Lohn, E. Hermann, M. Gessler, S. Tenbrink, and H.-J. Schmid, “Material Properties of Laser Sintered Polyamide 12 as Function of Build Cycles Using Low Refresh Rates,” in <i>26th Annual International Solid Freeform Fabrication Symposium</i>, 2015, vol. 26, pp. 540–549.","apa":"Josupeit, S., Lohn, J., Hermann, E., Gessler, M., Tenbrink, S., &#38; Schmid, H.-J. (2015). Material Properties of Laser Sintered Polyamide 12 as Function of Build Cycles Using Low Refresh Rates. In <i>26th Annual International Solid Freeform Fabrication Symposium</i> (Vol. 26, pp. 540–549). <a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-43-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-43-Josupeit.pdf</a>","short":"S. Josupeit, J. Lohn, E. Hermann, M. Gessler, S. Tenbrink, H.-J. Schmid, in: 26th Annual International Solid Freeform Fabrication Symposium, 2015, pp. 540–549.","mla":"Josupeit, Stefan, et al. “Material Properties of Laser Sintered Polyamide 12 as Function of Build Cycles Using Low Refresh Rates.” <i>26th Annual International Solid Freeform Fabrication Symposium</i>, vol. 26, 2015, pp. 540–49, doi:<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-43-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-43-Josupeit.pdf</a>.","bibtex":"@inproceedings{Josupeit_Lohn_Hermann_Gessler_Tenbrink_Schmid_2015, title={Material Properties of Laser Sintered Polyamide 12 as Function of Build Cycles Using Low Refresh Rates}, volume={26}, DOI={<a href=\"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-43-Josupeit.pdf\">http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-43-Josupeit.pdf</a>}, booktitle={26th Annual International Solid Freeform Fabrication Symposium}, author={Josupeit, Stefan and Lohn, Johannes and Hermann, E. and Gessler, Monika and Tenbrink, S. and Schmid, Hans-Joachim}, year={2015}, pages={540–549} }"},"year":"2015","volume":26,"date_created":"2021-05-14T07:46:18Z","author":[{"full_name":"Josupeit, Stefan","last_name":"Josupeit","first_name":"Stefan"},{"last_name":"Lohn","full_name":"Lohn, Johannes","first_name":"Johannes"},{"full_name":"Hermann, E.","last_name":"Hermann","first_name":"E."},{"last_name":"Gessler","full_name":"Gessler, Monika","first_name":"Monika"},{"first_name":"S.","full_name":"Tenbrink, S.","last_name":"Tenbrink"},{"first_name":"Hans-Joachim","last_name":"Schmid","id":"464","full_name":"Schmid, Hans-Joachim"}],"date_updated":"2022-01-06T06:55:28Z","doi":"http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-43-Josupeit.pdf","title":"Material Properties of Laser Sintered Polyamide 12 as Function of Build Cycles Using Low Refresh Rates","publication":"26th Annual International Solid Freeform Fabrication Symposium","type":"conference","status":"public","abstract":[{"lang":"eng","text":"Due to long process times at high temperatures, unmolten polyamide 12 material ages during the manufacturing process. Hence, it needs to be refreshed with new material for further build cycles. In application, refresh rates of about 50 % are commonly used. In this work, the recycling optimized material PA 2221 from EOS is analyzed along a series of 13 build and refresh cycles using a reduced refresh rate of 32 %. Before and after every build, the powder is analyzed regarding melt properties determined by MVR and DSC measurements. Thereby, in-process ageing effects are investigated and the steady-state conditions are determined accordingly. In addition, powder properties are directly linked to resulting mechanical and geometrical part properties. Key findings are a robust DSC measurement method for polyamide 12 powder, constant “circulated” material properties after three build/refresh cycles and robust tensile properties along the whole tested powder life cycle. As a result, process conditions of PA 2221 using reduced refresh rates can be derived from this work."}],"department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"user_id":"71545","_id":"22187","language":[{"iso":"eng"}]},{"citation":{"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} }","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>.","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>","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","author":[{"first_name":"Patrick","last_name":"Delfs","full_name":"Delfs, Patrick"},{"first_name":"Marcel","full_name":"Toews, Marcel","last_name":"Toews"},{"first_name":"Hans-Joachim","last_name":"Schmid","id":"464","full_name":"Schmid, Hans-Joachim"}],"date_created":"2021-05-14T07:46:20Z","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":[{"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.","lang":"eng"}],"user_id":"71545","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"_id":"22189","language":[{"iso":"eng"}]},{"publication":"Proceedings of the Rapid Tech 2015","type":"conference","status":"public","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"}],"department":[{"_id":"150"},{"_id":"624"},{"_id":"219"}],"user_id":"71545","_id":"22199","language":[{"iso":"eng"}],"publication_identifier":{"isbn":["978-3-662-48473-9"]},"page":"63-78","citation":{"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>.","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.","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>"},"year":"2015","author":[{"full_name":"Josupeit, Stefan","last_name":"Josupeit","first_name":"Stefan"},{"first_name":"S.","last_name":"Tutzschky","full_name":"Tutzschky, S."},{"last_name":"Gessler","full_name":"Gessler, M.","first_name":"M."},{"last_name":"Schmid","id":"464","full_name":"Schmid, Hans-Joachim","first_name":"Hans-Joachim"}],"date_created":"2021-05-14T07:46:32Z","publisher":"Springer Vieweg","date_updated":"2022-01-06T06:55:28Z","doi":"10.1007/978-3-662-48473-9_5","title":"Powder ageing and material properties of laser sintered polyamide 12 using low refresh rates"},{"_id":"22394","user_id":"38077","department":[{"_id":"9"},{"_id":"146"},{"_id":"219"},{"_id":"624"}],"language":[{"iso":"eng"}],"type":"journal_article","publication":"Rapid Prototyping Journal","abstract":[{"lang":"eng","text":"Purpose – The purpose of this paper is to present Design Rules for additive manufacturing and a method for their development. Design/methodology/approach – First, a process-independent method for the development of Design Rules was worked out. Therefore, geometrical standard elements and attributes that characterize the elements’ shapes have been defined. Next, the standard elements have been manufactured with different attribute values with Laser Sintering, Laser Melting and Fused Deposition Modeling, and their geometrical quality was examined. From the results, Design Rules for additive manufacturing were derived and summarized in a catalogue. Findings – Due to the process independent method, Design Rules were developed that apply for the different considered additive manufacturing technologies equally. These Design Rules are completely function-independent and easily transferable to individual part designs. Research limitations/implications – The developed Design Rules can only apply for the considered boundary conditions. To extend the Design Rules’ validity, their applicability should be proven for other boundary conditions. Practical implications – The developed Design Rules practically support the design of technical parts. Additionally they can be used for training and teaching in the field of “design for additive manufacturing”. Originality/value – The developed Design Rules constitute a first step toward general Design Rules for Additive Manufacturing. Thus, they might form a suitable basis for further scientific approaches, and the Design Rules can be used to set up teaching documentations for lessons and seminars."}],"status":"public","publisher":"Emerald Group Publishing Limited","date_updated":"2022-01-06T06:55:32Z","author":[{"first_name":"Guido","last_name":"dell'Aere","full_name":"dell'Aere, Guido"},{"first_name":"Detmar","full_name":"Zimmer, Detmar","id":"604","last_name":"Zimmer"}],"date_created":"2021-06-15T11:09:20Z","volume":21,"title":"On design for Additive Manufacturing - evaluating geometrical limitations","doi":"10.1108/RPJ-06-2013-0060","publication_identifier":{"isbn":["1355-2546"]},"issue":"6","year":"2015","citation":{"ama":"dell’Aere G, Zimmer D. On design for Additive Manufacturing - evaluating geometrical limitations. <i>Rapid Prototyping Journal</i>. 2015;21(6):662-670. doi:<a href=\"https://doi.org/10.1108/RPJ-06-2013-0060\">10.1108/RPJ-06-2013-0060</a>","chicago":"Aere, Guido dell’, and Detmar Zimmer. “On Design for Additive Manufacturing - Evaluating Geometrical Limitations.” <i>Rapid Prototyping Journal</i> 21, no. 6 (2015): 662–70. <a href=\"https://doi.org/10.1108/RPJ-06-2013-0060\">https://doi.org/10.1108/RPJ-06-2013-0060</a>.","ieee":"G. dell’Aere and D. Zimmer, “On design for Additive Manufacturing - evaluating geometrical limitations,” <i>Rapid Prototyping Journal</i>, vol. 21, no. 6, pp. 662–670, 2015.","apa":"dell’Aere, G., &#38; Zimmer, D. (2015). On design for Additive Manufacturing - evaluating geometrical limitations. <i>Rapid Prototyping Journal</i>, <i>21</i>(6), 662–670. <a href=\"https://doi.org/10.1108/RPJ-06-2013-0060\">https://doi.org/10.1108/RPJ-06-2013-0060</a>","mla":"dell’Aere, Guido, and Detmar Zimmer. “On Design for Additive Manufacturing - Evaluating Geometrical Limitations.” <i>Rapid Prototyping Journal</i>, vol. 21, no. 6, Emerald Group Publishing Limited, 2015, pp. 662–70, doi:<a href=\"https://doi.org/10.1108/RPJ-06-2013-0060\">10.1108/RPJ-06-2013-0060</a>.","bibtex":"@article{dell’Aere_Zimmer_2015, title={On design for Additive Manufacturing - evaluating geometrical limitations}, volume={21}, DOI={<a href=\"https://doi.org/10.1108/RPJ-06-2013-0060\">10.1108/RPJ-06-2013-0060</a>}, number={6}, journal={Rapid Prototyping Journal}, publisher={Emerald Group Publishing Limited}, author={dell’Aere, Guido and Zimmer, Detmar}, year={2015}, pages={662–670} }","short":"G. dell’Aere, D. Zimmer, Rapid Prototyping Journal 21 (2015) 662–670."},"intvolume":"        21","page":"662-670"},{"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":{"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.","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.","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.","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","author":[{"full_name":"Lieneke, Tobias","last_name":"Lieneke","first_name":"Tobias"},{"full_name":"Adam, Guido","last_name":"Adam","first_name":"Guido"},{"last_name":"Leuders","full_name":"Leuders, Stefan","first_name":"Stefan"},{"last_name":"Knoop","full_name":"Knoop, Frederick","first_name":"Frederick"},{"first_name":"Stefan","full_name":"Josupeit, Stefan","last_name":"Josupeit"},{"last_name":"Delfs","full_name":"Delfs, Patrick","first_name":"Patrick"},{"first_name":"Nils","last_name":"Funke","full_name":"Funke, Nils"},{"last_name":"Zimmer","full_name":"Zimmer, Detmar","id":"604","first_name":"Detmar"}],"date_created":"2021-06-15T11:09:21Z"},{"language":[{"iso":"eng"}],"_id":"22396","user_id":"38077","department":[{"_id":"9"},{"_id":"146"},{"_id":"219"},{"_id":"624"},{"_id":"367"},{"_id":"150"}],"abstract":[{"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.","lang":"eng"}],"status":"public","type":"conference","publication":"26th Annual International Solid Freeform Fabrication Symposium","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","date_updated":"2022-01-06T06:55:32Z","date_created":"2021-06-15T11:09:22Z","author":[{"first_name":"Tobias","last_name":"Lieneke","full_name":"Lieneke, Tobias","id":"13956"},{"last_name":"Adam","full_name":"Adam, Guido","first_name":"Guido"},{"last_name":"Leuders","full_name":"Leuders, Stefan","first_name":"Stefan"},{"last_name":"Knoop","full_name":"Knoop, Frederick","first_name":"Frederick"},{"first_name":"Stefan","last_name":"Josupeit","full_name":"Josupeit, Stefan"},{"full_name":"Delfs, Patrick","last_name":"Delfs","first_name":"Patrick"},{"full_name":"Funke, Nils","last_name":"Funke","first_name":"Nils"},{"first_name":"Detmar","id":"604","full_name":"Zimmer, Detmar","last_name":"Zimmer"}],"volume":26,"year":"2015","citation":{"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>.","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.","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} }","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>","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."},"intvolume":"        26","page":"371-384"}]