Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Christopher J. Torbet"'
Autor:
Naji S. Husseini, J. W. Jones, Wah-Keat Lee, Tresa M. Pollock, Roy Clarke, Christopher J. Torbet, L. Liu
Publikováno v:
Acta Materialia. 59:5103-5115
Fatigue crack propagation in single-crystal nickel-base superalloys was studied in situ with synchrotron X-ray imaging in a very high-cycle regime. Experiments were performed at ambient temperature with a newly developed portable ultrasonic fatigue i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c648ca0b12bf296edd8e76d28bbc55c5
https://doi.org/10.1016/j.actamat.2011.04.042
https://doi.org/10.1016/j.actamat.2011.04.042
Autor:
Jun Zhu, Gary S. Was, Christopher J. Torbet, Tresa M. Pollock, Raghavendra R. Adharapurapu, Deepak Kumar
Publikováno v:
Metallurgical and Materials Transactions A. 42:1229-1244
The microstructure and surface stability of two experimental W-rich Ni-based alloys have been studied at 1273 K (1000 °C) in an impure-He environment containing only CO and CO2 as impurities. The alloy Ni-2.3Al-12Cr-12W contained 0.08 wt pct carbon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6d9697c9272d4d9a5998c65e5d3d3f3
https://doi.org/10.1007/s11661-010-0503-0
https://doi.org/10.1007/s11661-010-0503-0
Publikováno v:
Acta Materialia. 58:2143-2154
A new methodology is described for in situ characterization of fatigue damage accumulation using nonlinear ultrasonic measurements via analysis of the feedback signal of a closed-loop ultrasonic fatigue system. In the very high-cycle fatigue regime,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7b9348b78554843605e2189376c9c92
https://doi.org/10.1016/j.actamat.2009.11.055
https://doi.org/10.1016/j.actamat.2009.11.055
Publikováno v:
Acta Materialia. 57:3885-3894
Microstructural evolution and the onset of failure in a NiCoCrAlY bond coat (BC) on a single-crystal superalloy substrate have been investigated in a newly developed “hot spot” apparatus that imposes a temperature gradient along the length of a c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78f91752ffb93202877cc4ceaa252d86
https://doi.org/10.1016/j.actamat.2009.04.039
https://doi.org/10.1016/j.actamat.2009.04.039
Autor:
Christopher J. Torbet, Eric M. Dufresne, J. Wayne Jones, Naji S. Husseini, Jian Z. Yi, Dohn A. Arms, Tresa M. Pollock, Roy Clarke, Divine Kumah
Publikováno v:
Acta Materialia. 56:4715-4723
Solidification of single-crystal nickel-base superalloys introduces large-scale segregation of constituent elements and defects such as dislocations and mosaicity. By exploiting the energy tunability and interference capabilities of high-brilliance X
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3a66d484201f9106b013be9d2e28c83
https://doi.org/10.1016/j.actamat.2008.05.041
https://doi.org/10.1016/j.actamat.2008.05.041
Publikováno v:
Essential Readings in Magnesium Technology ISBN: 9783319485881
Essential Readings in Magnesium Technology
Essential Readings in Magnesium Technology
The fatigue behavior of the Thixomolded® magnesium alloy AZ91D has been examined using ultrasonic fatigue testing techniques at frequencies of approximately 20 kHz and for lifetimes as long as 109 cycles. An apparent endurance limit of approximately
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db8c33bb0ff11ee5a22babdc4d3f31ed
https://doi.org/10.1007/978-3-319-48099-2_38
https://doi.org/10.1007/978-3-319-48099-2_38
Publikováno v:
Materials Science and Engineering: A. 443:142-149
An ultrasonic fatigue testing system capable of operating at temperatures up to 1000 °C has been developed and utilized to study the fatigue behavior of a single crystal superalloy (PWA 1484) at a temperature of 1000 °C and loading frequency of app
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5099328547e5f39ba54d6ce6f33c7cb
https://doi.org/10.1016/j.msea.2006.08.028
https://doi.org/10.1016/j.msea.2006.08.028
Publikováno v:
The Review of scientific instruments. 83(2)
The unique capabilities of ultrashort pulse femtosecond lasers have been integrated with a focused ion beam (FIB) platform to create a new system for rapid 3D materials analysis. The femtosecond laser allows for in situ layer-by-layer material ablati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9e0e65fda09bea72d34ee7ffeeebbc9
https://pubmed.ncbi.nlm.nih.gov/22380093
https://pubmed.ncbi.nlm.nih.gov/22380093
Autor:
Naji S. Husseini, Divine Kumah, Christopher J. Torbet, Liu Liu, J. Wayne Jones, Tresa M. Pollock, Roy Clarke
Publikováno v:
Journal of Engineering Materials and Technology. 130
A novel X-ray synchrotron radiation approach is described for real-time imaging of the initiation and growth of fatigue cracks during ultrasonic fatigue (f=20kHz). We report here on new insights on single crystal nickel-base superalloys gained with t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8640c591e988cbe46e281c66aa6b7c72
https://doi.org/10.1115/1.2840966
https://doi.org/10.1115/1.2840966
Autor:
Christopher J. Szczepanski, Sushant K. Jha, Amit Shyam, J. M. Larsen, J. W. Jones, M.J. Caton, Tresa M. Pollock, Christopher J. Torbet
Publikováno v:
Superalloys 2004 (Tenth International Symposium).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88b1bee87b262b8fc92c266a91b9b8df
https://doi.org/10.7449/2004/superalloys_2004_259_268
https://doi.org/10.7449/2004/superalloys_2004_259_268