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Dennis Menge, M.Sc.

Kontakt
Publikationen
 Dennis Menge, M.Sc.

Institut für Leichtbau mit Hybridsystemen (ILH)

Kollegiat - Kollegiat im NRW Forschungskolleg „Leicht – Effizient – Mobil“

DMRC

Wissenschaftlicher Mitarbeiter - Polymer-Lasersintern

Partikelverfahrenstechnik (PVT)

Wissenschaftlicher Mitarbeiter - Polymer-Lasersintern

Telefon:
+49 5251 60-5520
Fax:
+49 5251 60-5409
Büro:
W2.206
Web:
Besucher:
Mersinweg 3
33100 Paderborn

Liste im Research Information System öffnen

2021

Low Temperature Laser Sintering on a Standard System: First Attempts and Results with PA12

D. Menge, H. Schmid, 2021

The laser sintering process has been a well-established AM process for many years. Disadvantages of LS are the low material variety and the thermal damage of the unprocessed material. The low temperature laser sintering attacks at this point and processes powder material at a build chamber temperature lower than the recrystallization temperature. This drastic reduction in temperature results in significantly less thermal damage to the material. This work deals with the low temperature laser sintering of Polyamide 12 (PA12) on a commercial, unmodified laser sintering system to compare it to standard laser sintered PA12 and to create the basis for low temperature laser sintering of high temperature materials on such a system. First results by changing the exposure parameters and by fixing parts on a building platform show a processing of PA12 on an EOS P396 at a build chamber temperature less than 100 °C instead of standard approx. 175 °C.


2020

Additive Leichtbaustrukturen für die Flugzeugkabine

D. Menge, S.H. Klippstein, H. Schmid, 2020


2019

FVA-Nr. 813 I - Generative Verfahren zur Herstellung von Polymerbauteilen

D. Menge, R. Walter, H. Schmid, U.P. Breuer, 2019


Devolopment, Production and post-processing of a topology optimized aircraft bracket

S.H. Klippstein, A. Duchting, T. Reiher, F. Hengsbach, D. Menge, H. Schmid, in: 30th Annual International Solid Freeform Fabrication Symposium, 2019, pp. 1932-1945

Structural parts for aviation have very high demands on the development and production process. Therefore, the entire process must be considered in order to produce high-quality AM metal parts. In this case study, a conventional part was selected to be optimized for AM. The process presented includes component selection, design improvement with a novel approach for topology optimization based on the AMendate algorithm as basis of MSC Apex Generative Design,component production on a SLM 250 HL and post-processing including heat treatment and surface smoothing. With the topology optimization a weight reduction of ~60 % could be realized, whereby the stress distribution is more homogeneous. Furthermore, the challenges of support optimization and post-processing have to be addressed, in order to produce competitive parts.


2018

Topology Optimized Heat Transfer Using the Example of an Electronic Housing

D. Menge, P. Delfs, M. Töws, H. Schmid, in: 29th Annual International Solid Freeform Fabrication Symposium, 2018, pp. 687-697

Function integration is a key issue for an efficient and economic usage of Additive Manufacturing. An efficient heat transfer by topology optimized structures is a rarely considered approach which will be outlined with an exemplary electronic housing which has been newly designed. A commercial projector unit, whose electrical components in total produce 38 W, shall be integrated in the closed housing and passively cooled by natural convection. Topology optimized structures shall be generated in the inner part of the housing to transfer the heat homogenously from the projector components to the housing wall while simultaneously minimizing the mass. At the outside of the housing walls, lattice and rib structures are applied to increase the effective surface for heat transfer by natural convection and radiation. Furthermore, the housing geometry is optimized regarding a minimization of support structures to reduce the post-processing effort. Finally, the housing shall be built of AlSi10Mg by SLM.


2017

Herstellbarkeit und mechanische Charakterisierung von lasergesinterten Gitterstrukturen

D. Menge, S. Josupeit, P.. Delfs, H. Schmid, in: Additive Fertigung von Bauteilen und Strukturen, Springer Vieweg, 2017, pp. 105-120

DOI


2016

Manufacturability and Mechanical Characterization of Laser Sintered Lattice Structures

S. Josupeit, P. Delfs, D. Menge, H. Schmid, in: 27th Annual International Solid Freeform Fabrication Symposium , 2016, pp. 2077-2086

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.


Liste im Research Information System öffnen

Forschungsgebiet

Polymer-Lasersintern
 

Lebenslauf

seit 2016Wissenschaftlicher Mitarbeiter am PVT/DMRC an der Universität Paderborn
2014-2016Masterstudium Wirtschaftsingenieurwesen-Maschinenbau, Universität Paderborn, Masterarbeit am DMRC / PVT mit dem Titel: Herstellbarkeit und mechanische Eigenschaften von lasergesinterten Gitterstrukturen 
2010-2014

Bachelorstudium Wirtschaftsingenieurwesen-Maschinenbau, Universität Paderborn

2009-2010Zivildienst: Essen auf Rädern beim DRK Soziale Dienste Iserlohn-Land gGmbH, Menden
2009Allgemeine Hochschulreife am Heilig-Geist-Gymnasium, Menden 

 

Betreute studentische Arbeiten

  • Marcel Töws (Masterarbeit): Optimierung der Wärmeübertragung mittels additiv gefertigter Strukturen am Beispiel eines Elektronik-Gehäuses
     

Veröffentlichungen und Konferenz-Proceedings

  • Dennis Menge, Stefan Josupeit, Patrick Delfs, Hans-Joachim Schmid
    Herstellbarkeit und mechanische Eigenschaften von lasergesinterten Gitterstrukturen
    Springer Vieweg Fachbuch: Additive Fertigung von Bauteilen und Strukturen (2017), S. 105-120
     
  • Stefan Josupeit, Patrick Delfs, Dennis Menge, Hans-Joachim Schmid
    Herstellbarkeit und mechanische Charakterisierung von lasergesinterten Gitterstrukturen
    DVM-Tagung "Additiv gefertigte Bauteile und Strukturen", Berlin, Deutschland, pp. 51-61 (2016)
     
  • Stefan Josupeit, Patrick Delfs, Dennis Menge, Hans-Joachim Schmid
    Manufacturability and Mechanical Characterization of Laser Sintered lattice Structures
    Solid Freeform Fabrication Symposium (SFF), Austin, USA (2016)
     

Monographien und Buchbeiträge

  • Dennis Menge, Stefan Josupeit, Patrick Delfs, Hans-Joachim Schmid
    Herstellbarkeit und mechanische Charakterisierung von lasergesinterten Gitterstrukturen
    Springer Vieweg Fachbuch: Additive Fertigung von Bauteilen und Strukturen, pp. 105-120 (2017)
     

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