--- _id: '42128' author: - first_name: Sven full_name: Pieper, Sven last_name: Pieper citation: ama: Pieper S. Confinement Induced Segregation Effects in Suspension Rheology. Vol 5. Shaker Verlag; 2018. apa: Pieper, S. (2018). Confinement Induced Segregation Effects in Suspension Rheology (Vol. 5). Shaker Verlag. bibtex: '@book{Pieper_2018, place={Aachen}, series={Schriftenreihe Lehrstuhl für Partikelverfahrenstechnik}, title={Confinement Induced Segregation Effects in Suspension Rheology}, volume={5}, publisher={Shaker Verlag}, author={Pieper, Sven}, year={2018}, collection={Schriftenreihe Lehrstuhl für Partikelverfahrenstechnik} }' chicago: 'Pieper, Sven. Confinement Induced Segregation Effects in Suspension Rheology. Vol. 5. Schriftenreihe Lehrstuhl Für Partikelverfahrenstechnik. Aachen: Shaker Verlag, 2018.' ieee: 'S. Pieper, Confinement Induced Segregation Effects in Suspension Rheology, vol. 5. Aachen: Shaker Verlag, 2018.' mla: Pieper, Sven. Confinement Induced Segregation Effects in Suspension Rheology. Shaker Verlag, 2018. short: S. Pieper, Confinement Induced Segregation Effects in Suspension Rheology, Shaker Verlag, Aachen, 2018. date_created: 2023-02-15T08:33:55Z date_updated: 2023-02-28T11:07:18Z department: - _id: '150' intvolume: ' 5' language: - iso: eng page: '135' place: Aachen publication_identifier: isbn: - 978-3-8440-5879-6 publication_status: published publisher: Shaker Verlag series_title: Schriftenreihe Lehrstuhl für Partikelverfahrenstechnik status: public supervisor: - first_name: Hans-Joachim full_name: Schmid, Hans-Joachim id: '464' last_name: Schmid orcid: 000-0001-8590-1921 title: Confinement Induced Segregation Effects in Suspension Rheology type: dissertation user_id: '98856' volume: 5 year: '2018' ... --- _id: '42130' author: - first_name: Philipp full_name: Grimm, Philipp last_name: Grimm citation: ama: Grimm P. Entwicklung einer Prozesskette zum flüssig-flüssig Phasentransfer nanoskaliger Partikeln.; 2018. apa: Grimm, P. (2018). Entwicklung einer Prozesskette zum flüssig-flüssig Phasentransfer nanoskaliger Partikeln. bibtex: '@book{Grimm_2018, title={Entwicklung einer Prozesskette zum flüssig-flüssig Phasentransfer nanoskaliger Partikeln}, author={Grimm, Philipp}, year={2018} }' chicago: Grimm, Philipp. Entwicklung einer Prozesskette zum flüssig-flüssig Phasentransfer nanoskaliger Partikeln, 2018. ieee: P. Grimm, Entwicklung einer Prozesskette zum flüssig-flüssig Phasentransfer nanoskaliger Partikeln. 2018. mla: Grimm, Philipp. Entwicklung einer Prozesskette zum flüssig-flüssig Phasentransfer nanoskaliger Partikeln. 2018. short: P. Grimm, Entwicklung einer Prozesskette zum flüssig-flüssig Phasentransfer nanoskaliger Partikeln, 2018. date_created: 2023-02-15T08:42:52Z date_updated: 2023-02-28T11:07:12Z department: - _id: '150' language: - iso: ger page: '201' publication_status: published status: public supervisor: - first_name: Hans-Joachim full_name: Schmid, Hans-Joachim id: '464' last_name: Schmid orcid: 000-0001-8590-1921 title: Entwicklung einer Prozesskette zum flüssig-flüssig Phasentransfer nanoskaliger Partikeln type: dissertation user_id: '98856' year: '2018' ... --- _id: '42131' author: - first_name: Michael full_name: Dörmann, Michael last_name: Dörmann citation: ama: Dörmann M. Zur Modellierung von Kapillarbrücken zwischen nanoskaligen Partikeln.; 2018. apa: Dörmann, M. (2018). Zur Modellierung von Kapillarbrücken zwischen nanoskaligen Partikeln. bibtex: '@book{Dörmann_2018, title={Zur Modellierung von Kapillarbrücken zwischen nanoskaligen Partikeln}, author={Dörmann, Michael}, year={2018} }' chicago: Dörmann, Michael. Zur Modellierung von Kapillarbrücken zwischen nanoskaligen Partikeln, 2018. ieee: M. Dörmann, Zur Modellierung von Kapillarbrücken zwischen nanoskaligen Partikeln. 2018. mla: Dörmann, Michael. Zur Modellierung von Kapillarbrücken zwischen nanoskaligen Partikeln. 2018. short: M. Dörmann, Zur Modellierung von Kapillarbrücken zwischen nanoskaligen Partikeln, 2018. date_created: 2023-02-15T08:45:08Z date_updated: 2023-02-28T11:07:09Z department: - _id: '150' language: - iso: ger page: '175' publication_status: published status: public supervisor: - first_name: Hans-Joachim full_name: Schmid, Hans-Joachim id: '464' last_name: Schmid orcid: 000-0001-8590-1921 title: Zur Modellierung von Kapillarbrücken zwischen nanoskaligen Partikeln type: dissertation user_id: '98856' year: '2018' ... --- _id: '23759' author: - first_name: Dennis full_name: Menge, Dennis id: '29240' last_name: Menge - first_name: Stefan full_name: Josupeit, Stefan last_name: Josupeit - first_name: 'Patrick ' full_name: 'Delfs, Patrick ' last_name: Delfs - first_name: Hans-Joachim full_name: Schmid, Hans-Joachim id: '464' last_name: Schmid citation: ama: 'Menge D, Josupeit S, Delfs P, Schmid H-J. Herstellbarkeit und mechanische Charakterisierung von lasergesinterten Gitterstrukturen. In: Richard HA, Schramm B, Zipsner T, eds. Additive Fertigung von Bauteilen und Strukturen. Wiesbaden: Springer Vieweg; 2017:105-120. doi:10.1007/978-3-658-17780-5' apa: 'Menge, D., Josupeit, S., Delfs, P., & Schmid, H.-J. (2017). Herstellbarkeit und mechanische Charakterisierung von lasergesinterten Gitterstrukturen. In H. A. Richard, B. Schramm, & T. Zipsner (Eds.), Additive Fertigung von Bauteilen und Strukturen (pp. 105–120). Wiesbaden: Springer Vieweg. https://doi.org/10.1007/978-3-658-17780-5' bibtex: '@inbook{Menge_Josupeit_Delfs_Schmid_2017, place={Wiesbaden}, title={Herstellbarkeit und mechanische Charakterisierung von lasergesinterten Gitterstrukturen}, DOI={10.1007/978-3-658-17780-5}, booktitle={Additive Fertigung von Bauteilen und Strukturen}, publisher={Springer Vieweg}, author={Menge, Dennis and Josupeit, Stefan and Delfs, Patrick and Schmid, Hans-Joachim}, editor={Richard, Hans Albert and Schramm, Britta and Zipsner, ThomasEditors}, year={2017}, pages={105–120} }' chicago: 'Menge, Dennis, Stefan Josupeit, Patrick Delfs, and Hans-Joachim Schmid. “Herstellbarkeit und mechanische Charakterisierung von lasergesinterten Gitterstrukturen.” In Additive Fertigung von Bauteilen und Strukturen, edited by Hans Albert Richard, Britta Schramm, and Thomas Zipsner, 105–20. Wiesbaden: Springer Vieweg, 2017. https://doi.org/10.1007/978-3-658-17780-5.' ieee: 'D. Menge, S. Josupeit, P. Delfs, and H.-J. Schmid, “Herstellbarkeit und mechanische Charakterisierung von lasergesinterten Gitterstrukturen,” in Additive Fertigung von Bauteilen und Strukturen, H. A. Richard, B. Schramm, and T. Zipsner, Eds. Wiesbaden: Springer Vieweg, 2017, pp. 105–120.' mla: Menge, Dennis, et al. “Herstellbarkeit und mechanische Charakterisierung von lasergesinterten Gitterstrukturen.” Additive Fertigung von Bauteilen und Strukturen, edited by Hans Albert Richard et al., Springer Vieweg, 2017, pp. 105–20, doi:10.1007/978-3-658-17780-5. short: 'D. Menge, S. Josupeit, P. Delfs, H.-J. Schmid, in: H.A. Richard, B. Schramm, T. Zipsner (Eds.), Additive Fertigung von Bauteilen und Strukturen, Springer Vieweg, Wiesbaden, 2017, pp. 105–120.' date_created: 2021-09-03T13:06:00Z date_updated: 2022-01-06T06:55:59Z department: - _id: '150' - _id: '219' - _id: '624' doi: 10.1007/978-3-658-17780-5 editor: - first_name: Hans Albert full_name: Richard, Hans Albert last_name: Richard - first_name: Britta full_name: Schramm, Britta last_name: Schramm - first_name: Thomas full_name: Zipsner, Thomas last_name: Zipsner language: - iso: ger page: 105-120 place: Wiesbaden publication: Additive Fertigung von Bauteilen und Strukturen publication_identifier: isbn: - '9783658177799' - '9783658177805' publication_status: published publisher: Springer Vieweg status: public title: Herstellbarkeit und mechanische Charakterisierung von lasergesinterten Gitterstrukturen type: book_chapter user_id: '29240' year: '2017' ... --- _id: '22195' abstract: - lang: eng text: 'Polymer laser sintering (LS) is an important additive manufacturing (AM) technology. Individual and complex parts are directly produced from CAD data without the need of specific tools. The raw material is a polymer powder, which is deposited layerwise and melted selectively with a laser. Built parts are embedded in residual unmolten powder, the so-called part cake, which undergoes thermal ageing effects due to the exposure to high temperatures for long times during the manufacturing process. Hence, the recyclability of the unmolten powder is limited. This article focuses on a fundamental analysis of the ageing kinetics dependent on time, temperature, and oxygen content in the gas atmosphere. A model is developed and applied to measured, position-dependent process temperature histories to successfully predict the ageing distribution within a part cake. The results can be used to optimize the thermal process management in LS and to develop new efficient powder recycling methods. ' author: - first_name: Stefan full_name: Josupeit, Stefan last_name: Josupeit - first_name: Hans-Joachim full_name: Schmid, Hans-Joachim id: '464' last_name: Schmid citation: ama: Josupeit S, Schmid H-J. Experimental analysis and modeling of local ageing effects during laser sintering of polyamide 12 in regard to individual thermal histories. Journal of Applied Polymer Science. 2017;134(42). doi:10.1002/app.45435 apa: Josupeit, S., & Schmid, H.-J. (2017). Experimental analysis and modeling of local ageing effects during laser sintering of polyamide 12 in regard to individual thermal histories. Journal of Applied Polymer Science, 134(42). https://doi.org/10.1002/app.45435 bibtex: '@article{Josupeit_Schmid_2017, title={Experimental analysis and modeling of local ageing effects during laser sintering of polyamide 12 in regard to individual thermal histories}, volume={134}, DOI={10.1002/app.45435}, number={42}, journal={Journal of Applied Polymer Science}, publisher={Wiley}, author={Josupeit, Stefan and Schmid, Hans-Joachim}, year={2017} }' chicago: Josupeit, Stefan, and Hans-Joachim Schmid. “Experimental Analysis and Modeling of Local Ageing Effects during Laser Sintering of Polyamide 12 in Regard to Individual Thermal Histories.” Journal of Applied Polymer Science 134, no. 42 (2017). https://doi.org/10.1002/app.45435. ieee: S. Josupeit and H.-J. Schmid, “Experimental analysis and modeling of local ageing effects during laser sintering of polyamide 12 in regard to individual thermal histories,” Journal of Applied Polymer Science, vol. 134, no. 42, 2017. mla: Josupeit, Stefan, and Hans-Joachim Schmid. “Experimental Analysis and Modeling of Local Ageing Effects during Laser Sintering of Polyamide 12 in Regard to Individual Thermal Histories.” Journal of Applied Polymer Science, vol. 134, no. 42, Wiley, 2017, doi:10.1002/app.45435. short: S. Josupeit, H.-J. Schmid, Journal of Applied Polymer Science 134 (2017). date_created: 2021-05-14T07:46:27Z date_updated: 2022-01-06T06:55:28Z department: - _id: '150' - _id: '624' - _id: '219' doi: 10.1002/app.45435 intvolume: ' 134' issue: '42' language: - iso: eng publication: Journal of Applied Polymer Science publisher: Wiley status: public title: Experimental analysis and modeling of local ageing effects during laser sintering of polyamide 12 in regard to individual thermal histories type: journal_article user_id: '71545' volume: 134 year: '2017' ... --- _id: '22421' author: - first_name: Tobias full_name: Lieneke, Tobias id: '13956' last_name: Lieneke - first_name: Guido full_name: Adam, Guido last_name: Adam - first_name: Stefan full_name: Josupeit, Stefan last_name: Josupeit - first_name: Patrick full_name: Delfs, Patrick last_name: Delfs - first_name: Detmar full_name: Zimmer, Detmar id: '604' last_name: Zimmer citation: ama: 'Lieneke T, Adam G, Josupeit S, Delfs P, Zimmer D. Maßtoleranzen für die additive Fertigung: Experimentelle Untersuchungen für das Lasersintern. In: Proceedings of the 14th Rapid.Tech Conference. Hanser Verlag; 2017:327-344. doi:10.3139/9783446454606.024 ' apa: 'Lieneke, T., Adam, G., Josupeit, S., Delfs, P., & Zimmer, D. (2017). Maßtoleranzen für die additive Fertigung: Experimentelle Untersuchungen für das Lasersintern. In Proceedings of the 14th Rapid.Tech Conference (pp. 327–344). Hanser Verlag. https://doi.org/10.3139/9783446454606.024 ' bibtex: '@inproceedings{Lieneke_Adam_Josupeit_Delfs_Zimmer_2017, title={Maßtoleranzen für die additive Fertigung: Experimentelle Untersuchungen für das Lasersintern}, DOI={10.3139/9783446454606.024 }, booktitle={Proceedings of the 14th Rapid.Tech Conference}, publisher={Hanser Verlag}, author={Lieneke, Tobias and Adam, Guido and Josupeit, Stefan and Delfs, Patrick and Zimmer, Detmar}, year={2017}, pages={327–344} }' chicago: 'Lieneke, Tobias, Guido Adam, Stefan Josupeit, Patrick Delfs, and Detmar Zimmer. “Maßtoleranzen Für Die Additive Fertigung: Experimentelle Untersuchungen Für Das Lasersintern.” In Proceedings of the 14th Rapid.Tech Conference, 327–44. Hanser Verlag, 2017. https://doi.org/10.3139/9783446454606.024 .' ieee: 'T. Lieneke, G. Adam, S. Josupeit, P. Delfs, and D. Zimmer, “Maßtoleranzen für die additive Fertigung: Experimentelle Untersuchungen für das Lasersintern,” in Proceedings of the 14th Rapid.Tech Conference, 2017, pp. 327–344.' mla: 'Lieneke, Tobias, et al. “Maßtoleranzen Für Die Additive Fertigung: Experimentelle Untersuchungen Für Das Lasersintern.” Proceedings of the 14th Rapid.Tech Conference, Hanser Verlag, 2017, pp. 327–44, doi:10.3139/9783446454606.024 .' short: 'T. Lieneke, G. Adam, S. Josupeit, P. Delfs, D. Zimmer, in: Proceedings of the 14th Rapid.Tech Conference, Hanser Verlag, 2017, pp. 327–344.' date_created: 2021-06-15T11:09:51Z date_updated: 2022-01-06T06:55:32Z department: - _id: '9' - _id: '146' - _id: '219' - _id: '624' - _id: '150' doi: '10.3139/9783446454606.024 ' language: - iso: eng page: 327-344 publication: Proceedings of the 14th Rapid.Tech Conference publication_identifier: isbn: - 978-3-446-45460-6 publisher: Hanser Verlag status: public title: 'Maßtoleranzen für die additive Fertigung: Experimentelle Untersuchungen für das Lasersintern' type: conference user_id: '38077' year: '2017' ... --- _id: '21950' author: - first_name: Steffen full_name: Jesinghausen, Steffen id: '3959' last_name: Jesinghausen citation: ama: 'Jesinghausen S. Rheo-PIV nichtkolloidaler Suspensionen: Strukturelle Untersuchungen der Strömungsentwicklung in Schlitzdüsen mit Fokus auf Wandgleiten. Vol 3. Shaker; 2017.' apa: 'Jesinghausen, S. (2017). Rheo-PIV nichtkolloidaler Suspensionen: Strukturelle Untersuchungen der Strömungsentwicklung in Schlitzdüsen mit Fokus auf Wandgleiten (Vol. 3). Shaker.' bibtex: '@book{Jesinghausen_2017, place={Aachen}, series={Schriftenreihe Lehrstuhl für Partikelverfahrenstechnik}, title={Rheo-PIV nichtkolloidaler Suspensionen: Strukturelle Untersuchungen der Strömungsentwicklung in Schlitzdüsen mit Fokus auf Wandgleiten}, volume={3}, publisher={Shaker}, author={Jesinghausen, Steffen}, year={2017}, collection={Schriftenreihe Lehrstuhl für Partikelverfahrenstechnik} }' chicago: 'Jesinghausen, Steffen. Rheo-PIV nichtkolloidaler Suspensionen: Strukturelle Untersuchungen der Strömungsentwicklung in Schlitzdüsen mit Fokus auf Wandgleiten. Vol. 3. Schriftenreihe Lehrstuhl für Partikelverfahrenstechnik. Aachen: Shaker, 2017.' ieee: 'S. Jesinghausen, Rheo-PIV nichtkolloidaler Suspensionen: Strukturelle Untersuchungen der Strömungsentwicklung in Schlitzdüsen mit Fokus auf Wandgleiten, vol. 3. Aachen: Shaker, 2017.' mla: 'Jesinghausen, Steffen. Rheo-PIV nichtkolloidaler Suspensionen: Strukturelle Untersuchungen der Strömungsentwicklung in Schlitzdüsen mit Fokus auf Wandgleiten. Shaker, 2017.' short: 'S. Jesinghausen, Rheo-PIV nichtkolloidaler Suspensionen: Strukturelle Untersuchungen der Strömungsentwicklung in Schlitzdüsen mit Fokus auf Wandgleiten, Shaker, Aachen, 2017.' date_created: 2021-05-04T09:03:19Z date_updated: 2023-01-17T07:27:06Z department: - _id: '9' - _id: '150' intvolume: ' 3' language: - iso: ger page: '182' place: Aachen publication_identifier: isbn: - "\t978-3-8440-5600-6" publication_status: published publisher: Shaker series_title: Schriftenreihe Lehrstuhl für Partikelverfahrenstechnik status: public supervisor: - first_name: Hans-Joachim full_name: Schmid, Hans-Joachim id: '464' last_name: Schmid title: 'Rheo-PIV nichtkolloidaler Suspensionen: Strukturelle Untersuchungen der Strömungsentwicklung in Schlitzdüsen mit Fokus auf Wandgleiten' type: dissertation user_id: '3959' volume: 3 year: '2017' ... --- _id: '22180' abstract: - lang: eng text: The implementation of lattice structures into additive manufactured parts is an important method to decrease part weight maintaining a high specific payload. However, the manufacturability of lattice structures and mechanical properties for polymer laser sintering are quite unknown yet. To examine the manufacturability, sandwich structures with different cell types, cell sizes and lattice bar widths were designed, manufactured and evaluated. A decisive criterion is for example a sufficient powder removal. In a second step, manufacturable structures were analyzed using four-point-bending tests. Experimental data is compared to the density of the lattice structures and allows for a direct comparison of different cell types with varied geometrical attributes. The results of this work are guidelines for the design and dimensioning of laser sintered lattice structures. author: - first_name: Stefan full_name: Josupeit, Stefan last_name: Josupeit - first_name: Patrick full_name: Delfs, Patrick last_name: Delfs - first_name: Dennis full_name: Menge, Dennis id: '29240' last_name: Menge - first_name: Hans-Joachim full_name: Schmid, Hans-Joachim id: '464' last_name: Schmid citation: ama: 'Josupeit S, Delfs P, Menge D, Schmid H-J. Manufacturability and Mechanical Characterization of Laser Sintered Lattice Structures. In: 27th Annual International Solid Freeform Fabrication Symposium . Vol 27. ; 2016:2077-2086. doi:http://utw10945.utweb.utexas.edu/sites/default/files/2016/166-Josupeit.pdf' apa: Josupeit, S., Delfs, P., Menge, D., & Schmid, H.-J. (2016). Manufacturability and Mechanical Characterization of Laser Sintered Lattice Structures. In 27th Annual International Solid Freeform Fabrication Symposium (Vol. 27, pp. 2077–2086). http://utw10945.utweb.utexas.edu/sites/default/files/2016/166-Josupeit.pdf bibtex: '@inproceedings{Josupeit_Delfs_Menge_Schmid_2016, title={Manufacturability and Mechanical Characterization of Laser Sintered Lattice Structures}, volume={27}, DOI={http://utw10945.utweb.utexas.edu/sites/default/files/2016/166-Josupeit.pdf}, booktitle={27th Annual International Solid Freeform Fabrication Symposium }, author={Josupeit, Stefan and Delfs, Patrick and Menge, Dennis and Schmid, Hans-Joachim}, year={2016}, pages={2077–2086} }' chicago: Josupeit, Stefan, Patrick Delfs, Dennis Menge, and Hans-Joachim Schmid. “Manufacturability and Mechanical Characterization of Laser Sintered Lattice Structures.” In 27th Annual International Solid Freeform Fabrication Symposium , 27:2077–86, 2016. http://utw10945.utweb.utexas.edu/sites/default/files/2016/166-Josupeit.pdf. ieee: S. Josupeit, P. Delfs, D. Menge, and H.-J. Schmid, “Manufacturability and Mechanical Characterization of Laser Sintered Lattice Structures,” in 27th Annual International Solid Freeform Fabrication Symposium , 2016, vol. 27, pp. 2077–2086. mla: Josupeit, Stefan, et al. “Manufacturability and Mechanical Characterization of Laser Sintered Lattice Structures.” 27th Annual International Solid Freeform Fabrication Symposium , vol. 27, 2016, pp. 2077–86, doi:http://utw10945.utweb.utexas.edu/sites/default/files/2016/166-Josupeit.pdf. short: 'S. Josupeit, P. Delfs, D. Menge, H.-J. Schmid, in: 27th Annual International Solid Freeform Fabrication Symposium , 2016, pp. 2077–2086.' date_created: 2021-05-14T07:46:10Z date_updated: 2022-01-06T06:55:28Z department: - _id: '150' - _id: '624' - _id: '219' doi: http://utw10945.utweb.utexas.edu/sites/default/files/2016/166-Josupeit.pdf intvolume: ' 27' language: - iso: eng page: 2077-2086 publication: '27th Annual International Solid Freeform Fabrication Symposium ' status: public title: Manufacturability and Mechanical Characterization of Laser Sintered Lattice Structures type: conference user_id: '71545' volume: 27 year: '2016' ... --- _id: '22185' abstract: - lang: eng text: The layered structure of Additive Manufacturing processes results in a stair- stepping 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 additionally 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 all parts of the component surface are equally important, a preselection of areas can be used to improve the overall surface quality of relevant areas. The model uses the digital AMF format of a part. 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 exemplarily with a surface topography simulation for the laser sintering process. author: - first_name: Patrick full_name: Delfs, Patrick last_name: Delfs - first_name: Marcel full_name: Tows, Marcel last_name: Tows - first_name: Hans-Joachim full_name: Schmid, Hans-Joachim id: '464' last_name: Schmid citation: ama: Delfs P, Tows M, Schmid H-J. Optimized build orientation of additive manufactured parts for improved surface quality and build time. Additive Manufacturing. 2016;2(12, Part B):214-320. doi:10.1016/j.addma.2016.06.003 apa: Delfs, P., Tows, M., & Schmid, H.-J. (2016). Optimized build orientation of additive manufactured parts for improved surface quality and build time. Additive Manufacturing, 2(12, Part B), 214–320. https://doi.org/10.1016/j.addma.2016.06.003 bibtex: '@article{Delfs_Tows_Schmid_2016, title={Optimized build orientation of additive manufactured parts for improved surface quality and build time}, volume={2}, DOI={10.1016/j.addma.2016.06.003}, number={12, Part B}, journal={Additive Manufacturing}, publisher={Elsevier}, author={Delfs, Patrick and Tows, Marcel and Schmid, Hans-Joachim}, year={2016}, pages={214–320} }' chicago: 'Delfs, Patrick, Marcel Tows, and Hans-Joachim Schmid. “Optimized Build Orientation of Additive Manufactured Parts for Improved Surface Quality and Build Time.” Additive Manufacturing 2, no. 12, Part B (2016): 214–320. https://doi.org/10.1016/j.addma.2016.06.003.' ieee: P. Delfs, M. Tows, and H.-J. Schmid, “Optimized build orientation of additive manufactured parts for improved surface quality and build time,” Additive Manufacturing, vol. 2, no. 12, Part B, pp. 214–320, 2016. mla: Delfs, Patrick, et al. “Optimized Build Orientation of Additive Manufactured Parts for Improved Surface Quality and Build Time.” Additive Manufacturing, vol. 2, no. 12, Part B, Elsevier, 2016, pp. 214–320, doi:10.1016/j.addma.2016.06.003. short: P. Delfs, M. Tows, H.-J. Schmid, Additive Manufacturing 2 (2016) 214–320. date_created: 2021-05-14T07:46:16Z date_updated: 2022-01-06T06:55:28Z department: - _id: '150' - _id: '624' - _id: '219' doi: 10.1016/j.addma.2016.06.003 intvolume: ' 2' issue: 12, Part B language: - iso: eng page: 214-320 publication: Additive Manufacturing publication_identifier: isbn: - 2214-8604 publisher: Elsevier status: public title: Optimized build orientation of additive manufactured parts for improved surface quality and build time type: journal_article user_id: '71545' volume: 2 year: '2016' ... --- _id: '22190' author: - first_name: Patrick full_name: Delfs, Patrick last_name: Delfs - first_name: Hans-Joachim full_name: Schmid, Hans-Joachim id: '464' last_name: Schmid citation: ama: 'Delfs P, Schmid H-J. Extended Analysis of the Surface Topography of Laser Sintered Polymer Parts . In: Fraunhofer Direct Digital Manufacturing Conference. Vol 3. ; 2016:411-414. doi:https://www.bookshop.fraunhofer.de/buch/fraunhofer-direct-digital-manufacturing-conference-ddmc-2016/245111#' apa: Delfs, P., & Schmid, H.-J. (2016). Extended Analysis of the Surface Topography of Laser Sintered Polymer Parts . In Fraunhofer Direct Digital Manufacturing Conference (Vol. 3, pp. 411–414). https://www.bookshop.fraunhofer.de/buch/fraunhofer-direct-digital-manufacturing-conference-ddmc-2016/245111# bibtex: '@inproceedings{Delfs_Schmid_2016, title={Extended Analysis of the Surface Topography of Laser Sintered Polymer Parts }, volume={3}, DOI={https://www.bookshop.fraunhofer.de/buch/fraunhofer-direct-digital-manufacturing-conference-ddmc-2016/245111#}, booktitle={Fraunhofer Direct Digital Manufacturing Conference}, author={Delfs, Patrick and Schmid, Hans-Joachim}, year={2016}, pages={411–414} }' chicago: Delfs, Patrick, and Hans-Joachim Schmid. “Extended Analysis of the Surface Topography of Laser Sintered Polymer Parts .” In Fraunhofer Direct Digital Manufacturing Conference, 3:411–14, 2016. https://www.bookshop.fraunhofer.de/buch/fraunhofer-direct-digital-manufacturing-conference-ddmc-2016/245111#. ieee: P. Delfs and H.-J. Schmid, “Extended Analysis of the Surface Topography of Laser Sintered Polymer Parts ,” in Fraunhofer Direct Digital Manufacturing Conference, 2016, vol. 3, pp. 411–414. mla: Delfs, Patrick, and Hans-Joachim Schmid. “Extended Analysis of the Surface Topography of Laser Sintered Polymer Parts .” Fraunhofer Direct Digital Manufacturing Conference, vol. 3, 2016, pp. 411–14, doi:https://www.bookshop.fraunhofer.de/buch/fraunhofer-direct-digital-manufacturing-conference-ddmc-2016/245111#. short: 'P. Delfs, H.-J. Schmid, in: Fraunhofer Direct Digital Manufacturing Conference, 2016, pp. 411–414.' date_created: 2021-05-14T07:46:21Z date_updated: 2022-01-06T06:55:28Z department: - _id: '150' - _id: '624' - _id: '219' doi: https://www.bookshop.fraunhofer.de/buch/fraunhofer-direct-digital-manufacturing-conference-ddmc-2016/245111# intvolume: ' 3' language: - iso: eng page: 411-414 publication: Fraunhofer Direct Digital Manufacturing Conference publication_identifier: isbn: - 978-3-8396-1001-5 status: public title: 'Extended Analysis of the Surface Topography of Laser Sintered Polymer Parts ' type: conference user_id: '71545' volume: 3 year: '2016' ... --- _id: '22194' author: - first_name: Stefan full_name: Josupeit, Stefan last_name: Josupeit - first_name: Hans-Joachim full_name: Schmid, Hans-Joachim id: '464' last_name: Schmid citation: ama: 'Josupeit S, Schmid H-J. Thermal properties of polyamide 12 powder for application in laser sintering. In: International Congress on Particle Technology (PARTEC) . ; 2016.' apa: Josupeit, S., & Schmid, H.-J. (2016). Thermal properties of polyamide 12 powder for application in laser sintering. In International Congress on Particle Technology (PARTEC) . bibtex: '@inproceedings{Josupeit_Schmid_2016, title={Thermal properties of polyamide 12 powder for application in laser sintering}, booktitle={International Congress on Particle Technology (PARTEC) }, author={Josupeit, Stefan and Schmid, Hans-Joachim}, year={2016} }' chicago: Josupeit, Stefan, and Hans-Joachim Schmid. “Thermal Properties of Polyamide 12 Powder for Application in Laser Sintering.” In International Congress on Particle Technology (PARTEC) , 2016. ieee: S. Josupeit and H.-J. Schmid, “Thermal properties of polyamide 12 powder for application in laser sintering,” in International Congress on Particle Technology (PARTEC) , 2016. mla: Josupeit, Stefan, and Hans-Joachim Schmid. “Thermal Properties of Polyamide 12 Powder for Application in Laser Sintering.” International Congress on Particle Technology (PARTEC) , 2016. short: 'S. Josupeit, H.-J. Schmid, in: International Congress on Particle Technology (PARTEC) , 2016.' date_created: 2021-05-14T07:46:26Z date_updated: 2022-01-06T06:55:28Z department: - _id: '150' - _id: '624' - _id: '219' language: - iso: eng publication: 'International Congress on Particle Technology (PARTEC) ' status: public title: Thermal properties of polyamide 12 powder for application in laser sintering type: conference user_id: '71545' year: '2016' ... --- _id: '22200' abstract: - lang: eng text: In the polymer laser sinter process, part quality depends on many influencing factors along the process chain. For application of the technology in series production and an integration of laser sintered parts into a technical environment, the dimensional accuracy of parts has to be taken into account. Therefore, occuring deviatons and their scattering have to be reduced and homogenized based on process parameters and build job layout. In this work, the dimensional accuracy of laser sintered parts is analyzed for varied parameter values. Influences of different process and geometrical build job parameters on dimensional deviatons are figured out. The experimental results allow an evaluation of more and less important influences. Finally, measures are deduced to reduce and homogenize dimensional deviations. author: - first_name: Stefan full_name: Josupeit, Stefan last_name: Josupeit - first_name: Patrick full_name: Delfs, Patrick last_name: Delfs - first_name: Tobias full_name: Lieneke, Tobias id: '13956' last_name: Lieneke - first_name: Guido full_name: Adam, Guido last_name: Adam - first_name: Monika full_name: Gessler, Monika last_name: Gessler - first_name: H. full_name: Pfisterer, H. last_name: Pfisterer - first_name: Hans-Joachim full_name: Schmid, Hans-Joachim id: '464' last_name: Schmid citation: ama: 'Josupeit S, Delfs P, Lieneke T, et al. Dimensional accuracy of polymer laser sintered parts: Influences and measures. In: Rapid Tech - International Trade Show & Conference for Additive Manufacturing . ; 2016:107-120. doi:10.3139/9783446450608.009' apa: 'Josupeit, S., Delfs, P., Lieneke, T., Adam, G., Gessler, M., Pfisterer, H., & Schmid, H.-J. (2016). Dimensional accuracy of polymer laser sintered parts: Influences and measures. In Rapid Tech - International Trade Show & Conference for Additive Manufacturing (pp. 107–120). https://doi.org/10.3139/9783446450608.009' bibtex: '@inproceedings{Josupeit_Delfs_Lieneke_Adam_Gessler_Pfisterer_Schmid_2016, title={Dimensional accuracy of polymer laser sintered parts: Influences and measures}, DOI={10.3139/9783446450608.009}, booktitle={Rapid Tech - International Trade Show & Conference for Additive Manufacturing }, author={Josupeit, Stefan and Delfs, Patrick and Lieneke, Tobias and Adam, Guido and Gessler, Monika and Pfisterer, H. and Schmid, Hans-Joachim}, year={2016}, pages={107–120} }' chicago: 'Josupeit, Stefan, Patrick Delfs, Tobias Lieneke, Guido Adam, Monika Gessler, H. Pfisterer, and Hans-Joachim Schmid. “Dimensional Accuracy of Polymer Laser Sintered Parts: Influences and Measures.” In Rapid Tech - International Trade Show & Conference for Additive Manufacturing , 107–20, 2016. https://doi.org/10.3139/9783446450608.009.' ieee: 'S. Josupeit et al., “Dimensional accuracy of polymer laser sintered parts: Influences and measures,” in Rapid Tech - International Trade Show & Conference for Additive Manufacturing , 2016, pp. 107–120.' mla: 'Josupeit, Stefan, et al. “Dimensional Accuracy of Polymer Laser Sintered Parts: Influences and Measures.” Rapid Tech - International Trade Show & Conference for Additive Manufacturing , 2016, pp. 107–20, doi:10.3139/9783446450608.009.' short: 'S. Josupeit, P. Delfs, T. Lieneke, G. Adam, M. Gessler, H. Pfisterer, H.-J. Schmid, in: Rapid Tech - International Trade Show & Conference for Additive Manufacturing , 2016, pp. 107–120.' date_created: 2021-05-14T07:46:33Z date_updated: 2022-01-06T06:55:29Z department: - _id: '150' - _id: '624' - _id: '219' - _id: '146' doi: 10.3139/9783446450608.009 language: - iso: eng page: 107-120 publication: 'Rapid Tech - International Trade Show & Conference for Additive Manufacturing ' publication_identifier: isbn: - 978-3-446-45060-8 status: public title: 'Dimensional accuracy of polymer laser sintered parts: Influences and measures' type: conference user_id: '71545' year: '2016' ... --- _id: '22408' author: - first_name: Stefan full_name: Josupeit, Stefan last_name: Josupeit - first_name: Patrick full_name: Delfs, Patrick last_name: Delfs - first_name: Tobias full_name: Lieneke, Tobias id: '13956' last_name: Lieneke - first_name: Hans-Joachim full_name: Schmid, Hans-Joachim id: '464' last_name: Schmid citation: ama: 'Josupeit S, Delfs P, Lieneke T, Schmid H-J. Influences on the dimensional Accuracy of Laser Sintered Parts along the Process Chain. In: 27th Annual International Solid Freeform Fabrication Symposium . ; 2016.' apa: Josupeit, S., Delfs, P., Lieneke, T., & Schmid, H.-J. (2016). Influences on the dimensional Accuracy of Laser Sintered Parts along the Process Chain. In 27th Annual International Solid Freeform Fabrication Symposium . bibtex: '@inproceedings{Josupeit_Delfs_Lieneke_Schmid_2016, title={Influences on the dimensional Accuracy of Laser Sintered Parts along the Process Chain}, booktitle={27th Annual International Solid Freeform Fabrication Symposium }, author={Josupeit, Stefan and Delfs, Patrick and Lieneke, Tobias and Schmid, Hans-Joachim}, year={2016} }' chicago: Josupeit, Stefan, Patrick Delfs, Tobias Lieneke, and Hans-Joachim Schmid. “Influences on the Dimensional Accuracy of Laser Sintered Parts along the Process Chain.” In 27th Annual International Solid Freeform Fabrication Symposium , 2016. ieee: S. Josupeit, P. Delfs, T. Lieneke, and H.-J. Schmid, “Influences on the dimensional Accuracy of Laser Sintered Parts along the Process Chain,” in 27th Annual International Solid Freeform Fabrication Symposium , 2016. mla: Josupeit, Stefan, et al. “Influences on the Dimensional Accuracy of Laser Sintered Parts along the Process Chain.” 27th Annual International Solid Freeform Fabrication Symposium , 2016. short: 'S. Josupeit, P. Delfs, T. Lieneke, H.-J. Schmid, in: 27th Annual International Solid Freeform Fabrication Symposium , 2016.' date_created: 2021-06-15T11:09:36Z date_updated: 2022-01-06T06:55:32Z department: - _id: '9' - _id: '146' - _id: '219' - _id: '624' - _id: '150' language: - iso: eng publication: '27th Annual International Solid Freeform Fabrication Symposium ' status: public title: Influences on the dimensional Accuracy of Laser Sintered Parts along the Process Chain type: conference user_id: '38077' year: '2016' ... --- _id: '21947' abstract: - lang: eng text: Wall slip is a long-known phenomenon in the field of rheology. Nevertheless, the origin and the evolution are not completely clear yet. Regarding suspensions, the effect becomes even more complicated, because different mechanisms like pure slip or slip due to particle migration have to be taken into account. Furthermore, suspensions themselves show many flow anomalies and the isolation of slip is complicated. In order to develop working physical models, further insight is necessary. In this work, we measured experimentally the wall slip velocities of different highly filled suspensions in a rectangular slit die directly with respect to the particle concentration and the particle size. The slip velocities were obtained using a particle image velocimetry (PIV) system. The suspensions consisting of a castor oil–cinnamon oil blend and PMMA particles were matched in terms of refractive indexes to appear transparent. Hereby, possible optical path lengths larger than 15 mm were achieved. The slip velocities were found to be in a quadratic relation to the wall shear stress. Furthermore, the overall flow rate as well as the particle concentration has a direct influence on the slip. Concerning the shear stress, there seem to be two regions of slip with different physical characteristics. Furthermore, we estimated the slip layer thickness directly from the velocity profiles and propose a new interpretation. The PIV technique is used to investigate the viscosity and implicit the concentration profile in the slit die. It is shown that the particle migration process is quite fast. article_type: original author: - first_name: Steffen full_name: Jesinghausen, Steffen id: '3959' last_name: Jesinghausen orcid: https://orcid.org/0000-0003-2611-5298 - first_name: Rene full_name: Weiffen, Rene last_name: Weiffen - first_name: Hans-Joachim full_name: Schmid, Hans-Joachim id: '464' last_name: Schmid citation: ama: Jesinghausen S, Weiffen R, Schmid H-J. Direct measurement of wall slip and slip layer thickness of non-Brownian hard-sphere suspensions in rectangular channel flows. Experiments in Fluids. Published online 2016. doi:10.1007/s00348-016-2241-6 apa: Jesinghausen, S., Weiffen, R., & Schmid, H.-J. (2016). Direct measurement of wall slip and slip layer thickness of non-Brownian hard-sphere suspensions in rectangular channel flows. Experiments in Fluids. https://doi.org/10.1007/s00348-016-2241-6 bibtex: '@article{Jesinghausen_Weiffen_Schmid_2016, title={Direct measurement of wall slip and slip layer thickness of non-Brownian hard-sphere suspensions in rectangular channel flows}, DOI={10.1007/s00348-016-2241-6}, journal={Experiments in Fluids}, author={Jesinghausen, Steffen and Weiffen, Rene and Schmid, Hans-Joachim}, year={2016} }' chicago: Jesinghausen, Steffen, Rene Weiffen, and Hans-Joachim Schmid. “Direct Measurement of Wall Slip and Slip Layer Thickness of Non-Brownian Hard-Sphere Suspensions in Rectangular Channel Flows.” Experiments in Fluids, 2016. https://doi.org/10.1007/s00348-016-2241-6. ieee: 'S. Jesinghausen, R. Weiffen, and H.-J. Schmid, “Direct measurement of wall slip and slip layer thickness of non-Brownian hard-sphere suspensions in rectangular channel flows,” Experiments in Fluids, 2016, doi: 10.1007/s00348-016-2241-6.' mla: Jesinghausen, Steffen, et al. “Direct Measurement of Wall Slip and Slip Layer Thickness of Non-Brownian Hard-Sphere Suspensions in Rectangular Channel Flows.” Experiments in Fluids, 2016, doi:10.1007/s00348-016-2241-6. short: S. Jesinghausen, R. Weiffen, H.-J. Schmid, Experiments in Fluids (2016). date_created: 2021-05-04T08:47:31Z date_updated: 2023-01-17T07:37:53Z department: - _id: '150' - _id: '9' doi: 10.1007/s00348-016-2241-6 keyword: - Rheology - Wall Slip - Slip - apparent slip - suspension language: - iso: eng main_file_link: - url: https://link.springer.com/article/10.1007/s00348-016-2241-6 publication: Experiments in Fluids publication_identifier: issn: - 0723-4864 - 1432-1114 publication_status: published quality_controlled: '1' status: public title: Direct measurement of wall slip and slip layer thickness of non-Brownian hard-sphere suspensions in rectangular channel flows type: journal_article user_id: '3959' year: '2016' ... --- _id: '40488' author: - first_name: Sascha full_name: Schiller, Sascha last_name: Schiller citation: ama: Schiller S. Zur Feinstaubabscheidung aus Holzfeuerungsanlagen mit precoatierten Oberflächenfiltern. Shaker Verlag; 2016. apa: Schiller, S. (2016). Zur Feinstaubabscheidung aus Holzfeuerungsanlagen mit precoatierten Oberflächenfiltern. Shaker Verlag. bibtex: '@book{Schiller_2016, title={Zur Feinstaubabscheidung aus Holzfeuerungsanlagen mit precoatierten Oberflächenfiltern}, publisher={Shaker Verlag}, author={Schiller, Sascha}, year={2016} }' chicago: Schiller, Sascha. Zur Feinstaubabscheidung aus Holzfeuerungsanlagen mit precoatierten Oberflächenfiltern. Shaker Verlag, 2016. ieee: S. Schiller, Zur Feinstaubabscheidung aus Holzfeuerungsanlagen mit precoatierten Oberflächenfiltern. Shaker Verlag, 2016. mla: Schiller, Sascha. Zur Feinstaubabscheidung aus Holzfeuerungsanlagen mit precoatierten Oberflächenfiltern. Shaker Verlag, 2016. short: S. Schiller, Zur Feinstaubabscheidung aus Holzfeuerungsanlagen mit precoatierten Oberflächenfiltern, Shaker Verlag, 2016. date_created: 2023-01-27T10:47:41Z date_updated: 2023-01-27T12:14:45Z department: - _id: '9' - _id: '150' language: - iso: ger publication_identifier: isbn: - 978-3-8440-4342-6 publisher: Shaker Verlag status: public title: Zur Feinstaubabscheidung aus Holzfeuerungsanlagen mit precoatierten Oberflächenfiltern type: dissertation user_id: '15324' year: '2016' ... --- _id: '25140' article_type: original author: - first_name: Sven full_name: Pieper, Sven last_name: Pieper - first_name: Hans-Joachim full_name: Schmid, Hans-Joachim id: '464' last_name: Schmid orcid: 000-0001-8590-1921 citation: ama: Pieper S, Schmid H-J. Layer-formation of non-colloidal suspensions in a parallel plate rheometer under steady shear. Journal of Non-Newtonian Fluid Mechanics. Published online 2016:1-7. doi:10.1016/j.jnnfm.2016.04.004 apa: Pieper, S., & Schmid, H.-J. (2016). Layer-formation of non-colloidal suspensions in a parallel plate rheometer under steady shear. Journal of Non-Newtonian Fluid Mechanics, 1–7. https://doi.org/10.1016/j.jnnfm.2016.04.004 bibtex: '@article{Pieper_Schmid_2016, title={Layer-formation of non-colloidal suspensions in a parallel plate rheometer under steady shear}, DOI={10.1016/j.jnnfm.2016.04.004}, journal={Journal of Non-Newtonian Fluid Mechanics}, author={Pieper, Sven and Schmid, Hans-Joachim}, year={2016}, pages={1–7} }' chicago: Pieper, Sven, and Hans-Joachim Schmid. “Layer-Formation of Non-Colloidal Suspensions in a Parallel Plate Rheometer under Steady Shear.” Journal of Non-Newtonian Fluid Mechanics, 2016, 1–7. https://doi.org/10.1016/j.jnnfm.2016.04.004. ieee: 'S. Pieper and H.-J. Schmid, “Layer-formation of non-colloidal suspensions in a parallel plate rheometer under steady shear,” Journal of Non-Newtonian Fluid Mechanics, pp. 1–7, 2016, doi: 10.1016/j.jnnfm.2016.04.004.' mla: Pieper, Sven, and Hans-Joachim Schmid. “Layer-Formation of Non-Colloidal Suspensions in a Parallel Plate Rheometer under Steady Shear.” Journal of Non-Newtonian Fluid Mechanics, 2016, pp. 1–7, doi:10.1016/j.jnnfm.2016.04.004. short: S. Pieper, H.-J. Schmid, Journal of Non-Newtonian Fluid Mechanics (2016) 1–7. date_created: 2021-09-29T14:21:35Z date_updated: 2023-04-27T11:21:10Z department: - _id: '150' doi: 10.1016/j.jnnfm.2016.04.004 language: - iso: eng page: 1-7 publication: Journal of Non-Newtonian Fluid Mechanics publication_identifier: issn: - 0377-0257 publication_status: published quality_controlled: '1' status: public title: Layer-formation of non-colloidal suspensions in a parallel plate rheometer under steady shear type: journal_article user_id: '3959' year: '2016' ... --- _id: '24751' abstract: - lang: ger text: 'Das Thema der vorliegenden Dissertation ist die "Prozessqualifizierung zur verlässlichen Herstellung von Produkten im Polymer Lasersinterverfahren". Über eine definierte Qualitätsprozesskette werden sämtliche, auf die Produktqualität relevanten Einflussparameter, bestimmt und berücksichtigt. Unterschiedliche Methoden zur Materialcharakterisierung des pulverförmigen Ausgangsmaterials werden analysiert und bewertet. Rheologische sowie chemische Eigenschaften, aber auch die Partikelgrößenverteilung oder die Schüttdichte werden hinsichtlich Relevanz, Einfluss und Anwenderfreundlichkeit untersucht. Das Ziel ist eine sinnvolle Bestimmung des Ausgangszustandes des Pulvers anhand definierter, relevanter Materialeigenschaften, um reproduzierbare technische Bauteileigenschaften zu gewährleisten. Dazu werden mechanische, dynamisch-mechanische, physikalische, elektrische, thermische sowie chemische Untersuchungen durchgeführt und hinsichtlich wichtiger Einflussparameter evaluiert. Die Bestimmung erfolgt über entwickelte Referenzjobs, in denen die hauptsächlichen Einflussfaktoren auf das Polymer-Lasersinterverfahren entlang der Qualitätsprozesskette berücksichtigt werden. Die charakterisierten Daten dienen zur Auslegung eines fiktiven Produktes aus der Luftfahrtindustrie. Mit Hilfe dieser Methoden lassen sich Materialkennwerte für diverse Simulationstools eindeutig bestimmen um eine realitätsnahe Berechnung zu gewährleisten. ' author: - first_name: Stefan full_name: Rüsenberg, Stefan last_name: Rüsenberg citation: ama: Rüsenberg S. Prozessqualifizierung zur verlässlichen Herstellung von Produkten im Polymer Lasersinterverfahren. Vol Band, 2. Shaker Verlag GmbH; 2015. apa: 'Rüsenberg, S. (2015). Prozessqualifizierung zur verlässlichen Herstellung von Produkten im Polymer Lasersinterverfahren: Vol. Band, 2. Shaker Verlag GmbH.' bibtex: '@book{Rüsenberg_2015, place={Düren}, series={Forschungsberichte des Direct Manufacturing Research Centers}, title={Prozessqualifizierung zur verlässlichen Herstellung von Produkten im Polymer Lasersinterverfahren}, volume={Band, 2}, publisher={Shaker Verlag GmbH}, author={Rüsenberg, Stefan}, year={2015}, collection={Forschungsberichte des Direct Manufacturing Research Centers} }' chicago: 'Rüsenberg, Stefan. Prozessqualifizierung zur verlässlichen Herstellung von Produkten im Polymer Lasersinterverfahren. Vol. Band, 2. Forschungsberichte des Direct Manufacturing Research Centers. Düren: Shaker Verlag GmbH, 2015.' ieee: 'S. Rüsenberg, Prozessqualifizierung zur verlässlichen Herstellung von Produkten im Polymer Lasersinterverfahren, vol. Band, 2. Düren: Shaker Verlag GmbH, 2015.' mla: Rüsenberg, Stefan. Prozessqualifizierung zur verlässlichen Herstellung von Produkten im Polymer Lasersinterverfahren. Shaker Verlag GmbH, 2015. short: S. Rüsenberg, Prozessqualifizierung zur verlässlichen Herstellung von Produkten im Polymer Lasersinterverfahren, Shaker Verlag GmbH, Düren, 2015. date_created: 2021-09-21T11:17:14Z date_updated: 2022-01-06T06:56:33Z department: - _id: '150' - _id: '624' - _id: '219' keyword: - Additive Fertigung - Polymere - Lasersintern - Methode - Qualität - Konstruktion - Eigenschaften - Material - Charakterisierung - Qualifizierung language: - iso: ger main_file_link: - url: https://www.shaker.de/de/content/catalogue/index.asp?lang=de&ID=8&ISBN=978-3-8440-3507-0&search=yes page: '242' place: Düren publication_identifier: unknown: - 978-3-8440-3507-0 publication_status: published publisher: Shaker Verlag GmbH series_title: Forschungsberichte des Direct Manufacturing Research Centers status: public supervisor: - first_name: Hans-Joachim full_name: Schmid, Hans-Joachim id: '464' last_name: Schmid title: Prozessqualifizierung zur verlässlichen Herstellung von Produkten im Polymer Lasersinterverfahren type: dissertation user_id: '71545' volume: Band, 2 year: '2015' ... --- _id: '22178' 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 full_name: Schmid, Hans-Joachim id: '464' last_name: Schmid citation: ama: 'Delfs P, Li Z, Schmid H-J. Mass finishing of laser sintered parts. In: 26th Annual International Solid Freeform Fabrication Symposium. Vol 26. ; 2015:514-526. doi:http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-41-Delfs.pdf' apa: Delfs, P., Li, Z., & Schmid, H.-J. (2015). Mass finishing of laser sintered parts. In 26th Annual International Solid Freeform Fabrication Symposium (Vol. 26, pp. 514–526). http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-41-Delfs.pdf bibtex: '@inproceedings{Delfs_Li_Schmid_2015, title={Mass finishing of laser sintered parts}, volume={26}, DOI={http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-41-Delfs.pdf}, booktitle={26th Annual International Solid Freeform Fabrication Symposium}, author={Delfs, Patrick and Li, Z. and Schmid, Hans-Joachim}, year={2015}, pages={514–526} }' chicago: Delfs, Patrick, Z. Li, and Hans-Joachim Schmid. “Mass Finishing of Laser Sintered Parts.” In 26th Annual International Solid Freeform Fabrication Symposium, 26:514–26, 2015. http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-41-Delfs.pdf. ieee: P. Delfs, Z. Li, and H.-J. Schmid, “Mass finishing of laser sintered parts,” in 26th Annual International Solid Freeform Fabrication Symposium, 2015, vol. 26, pp. 514–526. mla: Delfs, Patrick, et al. “Mass Finishing of Laser Sintered Parts.” 26th Annual International Solid Freeform Fabrication Symposium, vol. 26, 2015, pp. 514–26, doi:http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-41-Delfs.pdf. short: 'P. Delfs, Z. Li, H.-J. Schmid, in: 26th Annual International Solid Freeform Fabrication Symposium, 2015, pp. 514–526.' date_created: 2021-05-14T07:46:07Z date_updated: 2022-01-06T06:55:28Z department: - _id: '150' - _id: '624' - _id: '219' doi: http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-41-Delfs.pdf intvolume: ' 26' language: - iso: eng page: 514-526 publication: 26th Annual International Solid Freeform Fabrication Symposium status: public title: Mass finishing of laser sintered parts type: conference user_id: '71545' volume: 26 year: '2015' ... --- _id: '22179' abstract: - lang: eng 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. author: - first_name: Stefan full_name: Josupeit, Stefan last_name: Josupeit - first_name: Hans-Joachim full_name: Schmid, Hans-Joachim id: '464' last_name: Schmid citation: ama: 'Josupeit S, Schmid H-J. Temperature History within Laser Sintered Part Cakes and its Influence on Process Quality. In: 26th Annual International Solid Freeform Fabrication Symposium. Vol 26. ; 2015:190-199. doi:http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-15-Josupeit.pdf' apa: Josupeit, S., & Schmid, H.-J. (2015). Temperature History within Laser Sintered Part Cakes and its Influence on Process Quality. In 26th Annual International Solid Freeform Fabrication Symposium (Vol. 26, pp. 190–199). http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-15-Josupeit.pdf bibtex: '@inproceedings{Josupeit_Schmid_2015, title={Temperature History within Laser Sintered Part Cakes and its Influence on Process Quality}, volume={26}, DOI={http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-15-Josupeit.pdf}, booktitle={26th Annual International Solid Freeform Fabrication Symposium}, author={Josupeit, Stefan and Schmid, Hans-Joachim}, year={2015}, pages={190–199} }' chicago: Josupeit, Stefan, and Hans-Joachim Schmid. “Temperature History within Laser Sintered Part Cakes and Its Influence on Process Quality.” In 26th Annual International Solid Freeform Fabrication Symposium, 26:190–99, 2015. http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-15-Josupeit.pdf. ieee: S. Josupeit and H.-J. Schmid, “Temperature History within Laser Sintered Part Cakes and its Influence on Process Quality,” in 26th Annual International Solid Freeform Fabrication Symposium, 2015, vol. 26, pp. 190–199. mla: Josupeit, Stefan, and Hans-Joachim Schmid. “Temperature History within Laser Sintered Part Cakes and Its Influence on Process Quality.” 26th Annual International Solid Freeform Fabrication Symposium, vol. 26, 2015, pp. 190–99, doi:http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-15-Josupeit.pdf. short: 'S. Josupeit, H.-J. Schmid, in: 26th Annual International Solid Freeform Fabrication Symposium, 2015, pp. 190–199.' date_created: 2021-05-14T07:46:09Z date_updated: 2022-01-06T06:55:28Z department: - _id: '150' - _id: '624' - _id: '219' doi: http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-15-Josupeit.pdf intvolume: ' 26' language: - iso: eng page: 190-199 publication: 26th Annual International Solid Freeform Fabrication Symposium status: public title: Temperature History within Laser Sintered Part Cakes and its Influence on Process Quality type: conference user_id: '71545' volume: 26 year: '2015' ... --- _id: '22187' 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. author: - first_name: Stefan full_name: Josupeit, Stefan last_name: Josupeit - first_name: Johannes full_name: Lohn, Johannes last_name: Lohn - first_name: E. full_name: Hermann, E. last_name: Hermann - first_name: Monika full_name: Gessler, Monika last_name: Gessler - first_name: S. full_name: Tenbrink, S. last_name: Tenbrink - first_name: Hans-Joachim full_name: Schmid, Hans-Joachim id: '464' last_name: Schmid 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: 26th Annual International Solid Freeform Fabrication Symposium. Vol 26. ; 2015:540-549. doi:http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-43-Josupeit.pdf' apa: Josupeit, S., Lohn, J., Hermann, E., Gessler, M., Tenbrink, S., & Schmid, H.-J. (2015). Material Properties of Laser Sintered Polyamide 12 as Function of Build Cycles Using Low Refresh Rates. In 26th Annual International Solid Freeform Fabrication Symposium (Vol. 26, pp. 540–549). http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-43-Josupeit.pdf 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={http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-43-Josupeit.pdf}, 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} }' 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 26th Annual International Solid Freeform Fabrication Symposium, 26:540–49, 2015. http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-43-Josupeit.pdf. 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 26th Annual International Solid Freeform Fabrication Symposium, 2015, vol. 26, pp. 540–549. mla: Josupeit, Stefan, et al. “Material Properties of Laser Sintered Polyamide 12 as Function of Build Cycles Using Low Refresh Rates.” 26th Annual International Solid Freeform Fabrication Symposium, vol. 26, 2015, pp. 540–49, doi:http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-43-Josupeit.pdf. 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.' date_created: 2021-05-14T07:46:18Z date_updated: 2022-01-06T06:55:28Z department: - _id: '150' - _id: '624' - _id: '219' doi: http://utw10945.utweb.utexas.edu/sites/default/files/2015/2015-43-Josupeit.pdf intvolume: ' 26' language: - iso: eng page: 540-549 publication: 26th Annual International Solid Freeform Fabrication Symposium status: public title: Material Properties of Laser Sintered Polyamide 12 as Function of Build Cycles Using Low Refresh Rates type: conference user_id: '71545' volume: 26 year: '2015' ...