Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Scott M. Cummings"'
Publikováno v:
ASME 2013 Rail Transportation Division Fall Technical Conference.
Vertical split rim (VSR) failures remain a failure mode for wheels in North America, and are of concern to wheel manufacturers and railroads alike. Both forged and cast wheels have suffered VSRs in service. Extensive testing during the last several y
Publikováno v:
ASME 2009 Rail Transportation Division Fall Technical Conference.
A series of dynamometer tests were conducted by the Wheel Defect Prevention Research Consortium (WDPRC) to quantify the amount of expected variation in brake shoe coefficient of friction (COF) and resulting wheel temperature throughout the life of an
Autor:
Scott M. Cummings
Publikováno v:
ASME 2008 Rail Transportation Division Fall Technical Conference.
The Wheel Defect Prevention Research Consortium (WDPRC) examined data from a wayside wheel temperature detector (WTD) located near the bottom of a grade in order to explore the root causes of hot wheels and thermal mechanical shelling. Not surprising
Autor:
Scott M. Cummings, Cameron P. Lonsdale
Publikováno v:
ASME 2008 Rail Transportation Division Fall Technical Conference.
As a means of determining the conditions under which a patch of martensite (and eventually a spall) is formed on a wheel tread, the Wheel Defect Prevention Research Consortium (WDPRC) has conducted a review of wheel slide test reports and analytical
Autor:
Scott M. Cummings
Publikováno v:
ASME 2008 Rail Transportation Division Fall Technical Conference.
The measured wheel/rail forces from four wheels in the leading truck of a coal hopper car during one revenue service roundtrip were used to by the Wheel Defect Prevention Research Consortium (WDPRC) to predict rolling contact fatigue (RCF) damage. Th
Autor:
Paul Krupowicz, Scott M. Cummings
Publikováno v:
ASME 2008 Rail Transportation Division Fall Technical Conference.
The Wheel Defect Prevention Research Consortium (WDPRC) conducted analyses of wheel impact load detector (WILD) data to explore how wheelset position and operating environment affect rolling contact fatigue (RCF). The typical three-piece freight car
Publikováno v:
ASME 2008 Rail Transportation Division Fall Technical Conference.
The Wheel Defect Prevention Research Consortium (WDPRC) conducted a review of existing brake shoe tests to explore the combinations of brake shoe force, time, and wheel/brake shoe coefficient of friction (COF) needed to achieve the temperatures of co
Autor:
Daniel H. Stone, Scott M. Cummings
Publikováno v:
ASME 2008 Rail Transportation Division Fall Technical Conference.
The Wheel Defect Prevention Research Consortium (WDPRC) conducted an analysis pertaining to the fatigue cracking of wheel treads by incorporating the effects of residual stresses, temperature, and wheel/rail contact stress. Laboratory fatigue tests w
Autor:
Scott M. Cummings, Don Lauro
Publikováno v:
ASME 2008 Rail Transportation Division Fall Technical Conference.
Inspections of 163 wheelsets conducted by the Wheel Defect Prevention Research Consortium (WDPRC) have produced critical information in identifying the high-level root causes of tread damage. While the overall wheel tread damage problem appears to be
Autor:
Patricia Schreiber, Scott M. Cummings
Publikováno v:
ASME 2008 Rail Transportation Division Fall Technical Conference.
The Wheel Defect Prevention Research Consortium (WDPRC) conducted an analysis of the possibility of wheel spall creation under revenue service conditions when a car traverses perturbed and/or lubricated track with the brakes applied. When the brake r