Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Daniel H. Stone"'
Publikováno v:
Journal of Failure Analysis and Prevention. 15:33-38
A number of electric flash butt rail welds fractured vertically through the cross section of the rail. The fractures initiated in the web near the bending neutral plane in a region where high-carbon-content liquid was identified to have been produced
Autor:
Daniel H. Stone, Steven L. Dedmon
Publikováno v:
2017 Joint Rail Conference.
The fatigue crack growth rates of three vertical split rim (VSR) wheel fractures are calculated using the Paris-Erdogan fatigue crack growth equation. Initial crack length, final crack length were measured for three wheels that have experienced VSR f
Publikováno v:
2014 Joint Rail Conference.
Plastic deformations alter the mechanical properties of many metals and alloys. Class C and Class D wheel steels such as are used in North American freight car service are particularly affected by plastic deformations occurring during rolling contact
Autor:
Daniel H. Stone
Publikováno v:
ASME 2011 Rail Transportation Division Fall Technical Conference.
The effect of surface damage by fretting corrosion pits under the backing ring or wheel seat will provide stress risers that will serve as crack initiation sites for fatigue crack initiation. Approximately one-half of North American axle failures are
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
Publikováno v:
ASME/IEEE 2007 Joint Rail Conference and Internal Combustion Engine Division Spring Technical Conference.
The effects of microscopic discontinuities on reducing the fatigue strength of steels are well known. This paper will attempt to quantify the reduction of fatigue strength due to measured quantities of microvoids, oxide inclusions, and sulfide inclus
Autor:
Jeff Gordon, Daniel H. Stone
Publikováno v:
Rail Transportation.
The American Public Transit Association (APTA) is seeking to develop specifications to ensure that wheels used in passenger applications perform safely under the service conditions to which they are exposed. To this end, an approach has been develope
Autor:
Geoffrey E. Dahlman, Daniel H. Stone
Publikováno v:
Rail Transportation.
Shattered rim defects are the result of large fatigue cracks that propagate roughly parallel to the wheel tread surface. They form and grow 12 to 20 millimeters (1/2 to 3/4 in.) below the tread surface. A typical shattered rim is shown in Figure 1. T
Autor:
Daniel H. Stone
Publikováno v:
Rail Quality and Maintenance for Modern Railway Operation ISBN: 9789048142675
The one constant of North American railway heavy haul service is the quest for ever increasing axle loads. During the 1960’s, the maximum axle loads permitted in interchange increased from 23.9 tonnes (26.25 tons) to 29.9 tonnes (32.9 tons). This c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cfa726172e7bfb407ac0047c52105a3f
https://doi.org/10.1007/978-94-015-8151-6_2
https://doi.org/10.1007/978-94-015-8151-6_2
Autor:
Daniel H. Stone
Publikováno v:
Wear. 191:268