Zobrazeno 1 - 10
of 32
pro vyhledávání: '"F. F. Ehrich"'
Autor:
F. F. Ehrich
Publikováno v:
Volume 8: 27th Conference on Mechanical Vibration and Noise.
Observations, analysis and understanding of out-of-the-ordinary rotordynamic phenomena (including several instabilities and nonlinear responses) observed in aircraft gas turbine engines and other high-speed rotating machinery over the course of the a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5dde8849a9d99a71559a59e21b902fc7
https://doi.org/10.1115/detc2015-48108
https://doi.org/10.1115/detc2015-48108
Autor:
Alan H. Epstein, Chee Wei Wong, F. F. Ehrich, Stuart A. Jacobson, Kenneth S. Breuer, Martin A. Schmidt, Xin Zhang, Luc G. Fréchette, Reza Ghodssi, R. Khanna
Publikováno v:
Journal of Microelectromechanical Systems. 14:141-152
A single-crystal silicon micromachined air turbine supported on gas-lubricated bearings has been operated in a controlled and sustained manner at rotational speeds greater than 1 million revolutions per minute, with mechanical power levels approachin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80c655bf825fc1039c5f3dc31b3dbb4c
https://doi.org/10.1109/jmems.2004.839008
https://doi.org/10.1109/jmems.2004.839008
Autor:
Stuart A. Jacobson, F. F. Ehrich
Publikováno v:
Journal of Engineering for Gas Turbines and Power. 125:141-148
A 4.2-mm diameter silicon rotor has been operated in a controlled and sustained manner at rotational speeds greater than 1.3 million rpm and power levels approaching 5 W. The rotor, supported by hydrostatic journal and thrust gas bearings, is driven
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cc68dbd865db89c76f1595845057ac4
https://doi.org/10.1115/1.1498273
https://doi.org/10.1115/1.1498273
Publikováno v:
Journal of Tribology. 123:368-375
A low-order model was created to analyze a small-scale gas bearing with a diameter of 4.1 mm, designed to spin at 2.4 million rpm. Due to microfabrication constraints, the bearing lies outside the standard operating space and stable operation is a ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aadb7e6f0e6f6080878c01d981b41f95
https://doi.org/10.1115/1.1308000
https://doi.org/10.1115/1.1308000
Autor:
Z. S. Spakovszky, Hyoun-Woo Shin, Seung Jin Song, B. F. Beacher, Albert Frank Storace, F. F. Ehrich, Manuel Martinez-Sanchez, D. C. Wisler
Publikováno v:
Journal of Turbomachinery. 123:433-445
An experimental and theoretical investigation has been conducted to evaluate the effects seen in axial-flow compressors when the centerline of the rotor is displaced from the centerline of the static structure of the engine. This creates circumferent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9140a0afd2eee3e4e9d7e42c8ec59e62
https://doi.org/10.1115/1.1378299
https://doi.org/10.1115/1.1378299
Autor:
Seung Jin Song, Hyoun-Woo Shin, Albert Frank Storace, D. C. Wisler, F. F. Ehrich, Z. S. Spakovszky, B. F. Beacher, Manuel Martinez-Sanchez
Publikováno v:
Journal of Turbomachinery. 123:446-452
An experimental and theoretical investigation was conducted to evaluate the effects seen in axial-flow compressors when the centerline of the rotor becomes displaced from the centerline of the static structure of the engine, thus creating circumferen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::979e9c1c73c98840393cd22f60ea64ef
https://doi.org/10.1115/1.1370165
https://doi.org/10.1115/1.1370165
Autor:
F. F. Ehrich
Publikováno v:
Volume 1: 21st Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C.
Virtually all of the nonlinear rotordynamic phenomena studied in the past result in excitation of rotor response at a dominant frequency at or near the critical frequency at rotational speeds other than the critical speed. In experimental work on a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab795c7404a88404fe16c22ba8269ab5
https://doi.org/10.1115/detc2007-35912
https://doi.org/10.1115/detc2007-35912
Autor:
L. C. Ho, Stuart A. Jacobson, Alan H. Epstein, Z. S. Spakovszky, Chiang Juay Teo, Hanqing Li, F. F. Ehrich, L. X. Liu
Publikováno v:
Scopus-Elsevier
Silicon based power micro-electro-mechanical system (MEMS) applications require high-speed microrotating machinery operating stably over a large range of operating conditions. The technical barriers to achieving stable high-speed operation with micro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8bb80100736d87ce372cfb17ae91d99a
https://doi.org/10.1115/ijtc2006-12173
https://doi.org/10.1115/ijtc2006-12173
Autor:
Ian A. Waitz, G. Gauba, Reza Ghodssi, E. S. Piekos, Kenneth S. Breuer, F. F. Ehrich, G. Anathasuresh, Stephen D. Senturia, Alan H. Epstein, G. Shirley, Y. S. Tzeng, Chuan Seng Tan, C. Groshenry, Steven F. Nagle, Stuart A. Jacobson, S.M. Spearing, C.-C. Mehra, Jeffrey H. Lang, J. O.Mur Miranda, D. J. Orr, Kuo-Shen Chen, Martin A. Schmidt, Arturo A. Ayon
Publikováno v:
Proceedings of International Solid State Sensors and Actuators Conference (Transducers '97).
MIT is developing a MEMS-based gas turbine generator. Based on high speed rotating machinery, this 1 cm diameter by 3 mm thick SiC heat engine is designed to produce 10-20 W of electric power while consuming 10 grams/hr of H/sub 2/. Later versions ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d3e8412444ee30e99ebcd28091f2225
https://doi.org/10.1109/sensor.1997.635209
https://doi.org/10.1109/sensor.1997.635209
Autor:
S. A. Jacobson, F. F. Ehrich
Publikováno v:
Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award.
A 4.2 mm diameter silicon rotor has been operated in a controlled and sustained manner at rotational speeds greater then 1.3 million rpm and power levels approaching 5 W. The rotor, supported by hydrostatic journal and thrust gas bearings, is driven
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48d2ca634f4db2aecdcf28837cf9114f
https://doi.org/10.1115/2001-gt-0478
https://doi.org/10.1115/2001-gt-0478