Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Gary Carr"'
Autor:
Robert Phillips, Francesco Lanza di Scalea, Stefano Mariani, Wieslaw J. Staszewski, Gary Carr, Mahmood Fateh, Thompson V. Nguyen, Piotr Kijanka
Publikováno v:
Structural Health Monitoring. 12:539-548
This article describes a new system for high-speed and noncontact rail integrity evaluation being developed at the University of California at San Diego. A prototype using an ultrasonic air-coupled guided wave signal generation and air-coupled signal
Publikováno v:
Transportation Research Record: Journal of the Transportation Research Board. 2374:154-161
Research has been focused on developing a system for in situ measurement of stress in continuous-welded rail to use as a basis for the determination of neutral temperature (NT). Continuous-welded rail is known to break in cold weather and buckle in h
Autor:
Gary Carr, Francesco Lanza di Scalea, Mahmood Fateh, Salvatore Salamone, Robert Phillips, Ivan Bartoli, Stefano Coccia
Publikováno v:
Transportation Research Record: Journal of the Transportation Research Board. 2261:143-147
The University of California, San Diego (UCSD), with an FRA Office of Research and Development grant, is developing a system for high-speed and noncontact rail defect detection. A prototype was designed and field tested with the support of Volpe Nati
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit. 224:383-390
This article presents findings from projects conducted by the Transportation Technology Center, Inc. concerning track maintenance problems associated with bridge approaches of railway track. Field tests for determining root causes of, and evaluating
Autor:
Ivan Bartoli, Gary Carr, Robert Phillips, Mahmood Fateh, Ankit Srivastava, Stefano Coccia, Francesco Lanza di Scalea
Publikováno v:
Transportation Research Record: Journal of the Transportation Research Board. 2159:91-97
Most modern railways use continuous welded rails (CWRs). A major problem in these structures is the almost total absence of expansion joints, which can create severe issues such as buckling in hot weather and breakage or pulling apart in cold weather
Publikováno v:
2014 Joint Rail Conference.
The Federal Railroad Administration’s (FRA’s) Office of Research and Development has undertaken a multi-phase research program focused on the development and advancement of Autonomous Track Geometry Measurement Systems (ATGMS) and related technol
Autor:
Stefano Mariani, Robert Phillips, Peter Zhu, Mahmood Fateh, Claudio Nucera, Gary Carr, Francesco Lanza di Scalea
Publikováno v:
SPIE Proceedings.
Continuous Welded Rail (CWR) is used in modern rail construction including high-speed rail transportation. The absence of expansion joints in these structures brings about the risk of breakage in cold weather and of buckling in warm weather due to th
Autor:
Gary Carr
Publikováno v:
Journal of the Association of Nurses in AIDS Care. 7:35-42
The human immunodeficiency virus (HIV) epidemic has created new communities of need among people infected with the virus who are already marginalized by poverty, sexual activity and identity, and drug use. An ethnography of one residential hotel in S
Publikováno v:
ASME 2012 Rail Transportation Division Fall Technical Conference.
The University of California at San Diego (UCSD), under a Federal Railroad Administration (FRA) Office of Research and Development (R&D) grant, is conducting research to develop a system for in-situ measurement of the rail Neutral Temperature in Cont
Publikováno v:
2012 Joint Rail Conference.
Nonlinear guided wave propagation is a field that has received considerable attention in the last few decades mainly because the use of nonlinear features of elastic waves appears very promising for Nondestructive Evaluation (NDE) and Structural Heal