Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Jeff Irwin"'
Autor:
Atsushi Momose, Ryosuke Ueda, Mingjian Cai, Zhuoxuan Zhao, Sam Kalirai, Maderych Stan, Jeff Irwin, Hiroki Kawakami, Pouria Zangi, Pascal Meyer, Martin Börner, Joachim Schulz
Publikováno v:
Developments in X-Ray Tomography XIV.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a21b4ce56caa4fc555809ca84869ab04
https://doi.org/10.1117/12.2636393
https://doi.org/10.1117/12.2636393
Publikováno v:
Additive Manufacturing. 26:258-269
Thermal modeling of additive manufacturing processes such as laser powder bed fusion is able to calculate a thermal history of a build. This simulated thermal history can in turn be used as an input to further simulate temperature related characteris
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29bb538c067b577bc66deec01112919f
https://doi.org/10.1016/j.addma.2019.02.006
https://doi.org/10.1016/j.addma.2019.02.006
Publikováno v:
Additive Manufacturing. 46:102078
One of the challenges for process control of laser powder bed fusion additive manufacturing lies in thermal control. Excessively low laser power may lead to incomplete melting, while too high laser power can lead to keyholing, increasing the porosity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::872c166e64737f0eb00a1ca15aa524cb
https://doi.org/10.1016/j.addma.2021.102078
https://doi.org/10.1016/j.addma.2021.102078
Publikováno v:
Additive Manufacturing. 16:73-80
A three-dimensional finite element model is developed to allow for the prediction of temperature, residual stress, and distortion in multi-layer Laser Powder-Bed Fusion builds. Undesirable residual stress and distortion caused by thermal gradients ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db078bf0da6c16d3bbd6c6e1c9e383e1
https://doi.org/10.1016/j.addma.2017.05.001
https://doi.org/10.1016/j.addma.2017.05.001
This chapter outlines the methodology to numerically solve the equations which describe the thermal and mechanical equations for AM processes. This discussion follows that used by the Netfabb Simulation tool which was used to complete the FE validati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13e197ae6b474d338a13bfbbad2460da
https://doi.org/10.1016/b978-0-12-811820-7.00003-3
https://doi.org/10.1016/b978-0-12-811820-7.00003-3
Autor:
Jeff Irwin
Due to the repeated thermal cycling that occurs with the processing of each subsequent layer, the microstructure of additively manufactured parts undergoes complex changes throughout the deposition process. Understanding and modeling this evolution p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89781dee99f9719b68767e6f4de46df9
https://doi.org/10.1016/b978-0-12-811820-7.00009-4
https://doi.org/10.1016/b978-0-12-811820-7.00009-4
Autor:
Allison M. Beese, Lei Chen, Long-Qing Chen, Erik R. Denlinger, Alexander J. Dunbar, Michael Gouge, Jarred C. Heigel, Jeff Irwin, Yanzhou Ji, Pan Michaleris
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abe65d54cf7e43764c74bd44b1ed212b
https://doi.org/10.1016/b978-0-12-811820-7.00023-9
https://doi.org/10.1016/b978-0-12-811820-7.00023-9
Autor:
Michael Gouge, Jeff Irwin
The thermo-mechanical modeling of laser powder bed fusion processes using traditional moving source methods is impractical due to the requirements for both spatial and temporal discretization of the problem according to good finite element practice.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0624fd22bb82f0afacf37a2602fd3ea3
https://doi.org/10.1016/b978-0-12-811820-7.00018-5
https://doi.org/10.1016/b978-0-12-811820-7.00018-5
Autor:
Jeff Irwin, Abdalla R. Nassar, Pan Michaleris, James Craig, Dennis A. Kriczky, Edward W. Reutzel
Publikováno v:
Journal of Materials Processing Technology. 221:172-186
A method to analyze and visualize thermal metrics extracted from coaxial thermal images collected during a 3D directed energy deposition is developed as a non-destructive means to assess thermally driven material characteristics and part quality. Sta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eedbf12905f1cab28b722098b7e6105a
https://doi.org/10.1016/j.jmatprotec.2015.02.021
https://doi.org/10.1016/j.jmatprotec.2015.02.021
Autor:
Ricardo Valcárcel, José Avila, Francisco Javier Chichón, S. Ferrer, Jeff Irwin, Eva Pereiro, Andrea Sorrentino, Josep Nicolas, Marc Rosanes, Andrei Tkachuk
Publikováno v:
Journal of Synchrotron Radiation. 22:1112-1117
The performance of MISTRAL is reported, the soft X-ray transmission microscopy beamline at the ALBA light source (Barcelona, Spain) which is primarily dedicated to cryo soft X-ray tomography (cryo-SXT) for three-dimensional visualization of whole uns
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::312903ce68a66caec11bf07682cf3958
https://doi.org/10.1107/s1600577515008632
https://doi.org/10.1107/s1600577515008632