Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Sergey Mekhontsev"'
Measurements of Melt Pool Geometry and Cooling Rates of Individual Laser Traces on IN625 Bare Plates
Autor:
Mark R. Stoudt, Sergey Mekhontsev, Thien Q. Phan, Lyle E. Levine, Jordan S. Weaver, Jarred C. Heigel, Vladimir Khromschenko, Richard E. Ricker, Brandon M. Lane, Ivan Zhirnov
Publikováno v:
Integrating Materials and Manufacturing Innovation. 9:16-30
The complex physical nature of the laser powder bed fusion (LPBF) process warrants use of multiphysics computational simulations to predict or design optimal operating parameters or resultant part qualities such as microstructure or defect concentrat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76175e3a29479c332a75f4cba8b1f360
https://doi.org/10.1007/s40192-020-00169-1
https://doi.org/10.1007/s40192-020-00169-1
Autor:
David C. Deisenroth, Sergey Mekhontsev, Ivan Zhirnov, Leonard M. Hanssen, Daniel Cardenas-Garcia, Alkan Donmez, Steven E. Grantham, V B. Khromchenko, Brandon M. Lane
Publikováno v:
Journal of Research of the National Institute of Standards and Technology. 126
This paper describes advances in measuring the characteristic spatial distribution of surface temperature and emissivity during laser-metal interaction under conditions relevant for laser powder bed fusion (LPBF) additive manufacturing processes. Det
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19c96891fb216e2f08b01044fb5c3efc
https://doi.org/10.6028/jres.126.013
https://doi.org/10.6028/jres.126.013
Autor:
Richard E. Ricker, Brandon M. Lane, Ivan Zhirnov, Steven E. Grantham, Santosh Rauniyar, Kevin Chou, Sergey Mekhontsev
Publikováno v:
Addit Manuf
Melt pool monitoring (MPM) is a technique used in laser powder bed fusion (LPBF) to extract features from insitu sensor signals that correlate to defect formation or general part fabrication quality. Various melt pool phenomena have been shown to rel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c6392c51460985e8f285fe8fde6a65a
https://pubmed.ncbi.nlm.nih.gov/34141601
https://pubmed.ncbi.nlm.nih.gov/34141601
Publikováno v:
Manuf Lett
High-speed thermography is useful tool for researching the laser powder bed fusion process by providing thermal information in heat affected zone. However, it is not directly possible to ascertain the position of the laser spot with respect to the me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::148de99fe76226001a1103b80f0621c8
https://pubmed.ncbi.nlm.nih.gov/32855904
https://pubmed.ncbi.nlm.nih.gov/32855904
Publikováno v:
Reflection, Scattering, and Diffraction from Surfaces VII.
Additive manufacturing involving layer-wise selective laser melting of a powder material, or laser powder bed fusion (LPBF), is a fast-growing industry. At the Additive Manufacturing Metrology Testbed (AMMT) at the United States National Institute of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f57461fd24d03cee8b927768d700f87
https://doi.org/10.1117/12.2568179
https://doi.org/10.1117/12.2568179
Publikováno v:
Laser 3D Manufacturing VII.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cdb4857daa96da4843c383b72927922a
https://doi.org/10.1117/12.2547491
https://doi.org/10.1117/12.2547491
Publikováno v:
Thermosense: Thermal Infrared Applications XL.
The paper describes efforts to establish traceable measurements of radiance temperature on laser-induced heated metal surfaces on the NIST Additive Manufacturing Metrology Testbed (AMMT). Knowledge of radiance temperature with a well understood uncer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::212934007968cf576cbde0a82fd207fa
https://doi.org/10.1117/12.2305002
https://doi.org/10.1117/12.2305002
Autor:
Steven E. Grantham, Jorge E. Neira, Mihaela Vlasea, Sergey Mekhontsev, Leonard M. Hanssen, Brandon M. Lane
Publikováno v:
Laser 3D Manufacturing III.
The National Institute of Standards and Technology's (NIST) Physical Measurement and Engineering Laboratories are jointly developing the Additive Manufacturing Measurement Testbed (AMMT)/ Temperature and Emittance of Melts, Powders and Solids (TEMPS)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9cb3a3a17116f4401bfdb8e6b2d935c
https://doi.org/10.1117/12.2214246
https://doi.org/10.1117/12.2214246
Publikováno v:
International Journal of Thermophysics. 32:2623-2632
The eutectics Co–C, Pt–C, and Re–C, with phase transition temperatures of 1597 K, 2011 K, and 2747 K, respectively, are presently investigated for their suitability to serve as reference points for dissemination of T (and T90) within the contex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a828ad71dde00ca4534c8fd89ac373fb
https://doi.org/10.1007/s10765-011-1077-9
https://doi.org/10.1007/s10765-011-1077-9