Zobrazeno 1 - 10
of 49
pro vyhledávání: '"O Orringer"'
Rail integrity is a current application of engineering fracture mechanics at a practical level. Although railroad rails have been manufactured and used for more than a century, it is only in the last ten years that the effects of their crack propagat
In April 1990 a conference was held at the Cracow Institute of Technology, Cracow, Poland. The title of that conference was'Residual Stresses in Rails - Effects on Rail Integrity and Railroad Economics'and its themes were the measurement and predicti
Publikováno v:
Theoretical and Applied Fracture Mechanics. 28:109-115
This paper describes a fracture mechanics approach for analyzing the growth of internal transverse defects in rails known as detail fractures. Analyses are used specifically to determine: (1) the defect size at which a rail failure can be expected wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::495b8e93a001c12e25de454ca7804648
https://doi.org/10.1016/s0167-8442(97)00035-9
https://doi.org/10.1016/s0167-8442(97)00035-9
Autor:
O. Orringer
Publikováno v:
Fatigue & Fracture of Engineering Materials and Structures. 19:1329-1338
When a body subject to contact loads develops a crack, the origin, orientation, and tendency to propagate or not depend on fabrication details and maintenance history as well as the service environment. Research over the past twenty years has led to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca6aee8b4501837acc0965cfcb070a6d
https://doi.org/10.1111/j.1460-2695.1996.tb00170.x
https://doi.org/10.1111/j.1460-2695.1996.tb00170.x
Publikováno v:
Wear. 191:25-34
The contact pressures from service loads gradually change the residual stresses in the heads of rails and the rims of wheels from their initial (as manufactured) distributions as permanent plastic deformation accumulates. The resultant state has a ne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea6d540f92a4dd84496b4f22874cd804
https://doi.org/10.1016/0043-1648(95)06674-8
https://doi.org/10.1016/0043-1648(95)06674-8
Autor:
D.E. Gray, O. Orringer
Publikováno v:
Theoretical and Applied Fracture Mechanics. 23:55-65
An investigation of thermal cracks observed in the wheels of certain electric multiple unit (EMU) locomotives in North American commuter rail service is summarized. The cause is found to be partial reversal of the wheel rim residual hoop stress, whic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16ce29e082769db1f760bb3a7f2c563f
https://doi.org/10.1016/0167-8442(95)00004-x
https://doi.org/10.1016/0167-8442(95)00004-x
Publikováno v:
Theoretical and Applied Fracture Mechanics. 22:127-137
In this paper, the incremental theory of plasticity is used in conjunction with the strain energy density criterion to determine the stress field in 4-in. wide test specimens containing 3 holes. These specimens, made from 0.04-in. thick sheets of 202
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1634f14d7cabd6626c68e2ced152098
https://doi.org/10.1016/0167-8442(94)00053-4
https://doi.org/10.1016/0167-8442(94)00053-4
Autor:
O Orringer, JF McCarthy
The growing acceptance of the concept of variability in the properties of structural materials (fracture toughness of metals, differences in composite fibers, etc.), along with the inherent randomness of loading due to nature, has caused the approach
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4c0f87409284b330b9623335f8ed478
https://doi.org/10.1520/stp32297s
https://doi.org/10.1520/stp32297s
Publikováno v:
Theoretical and Applied Fracture Mechanics. 15:1-9
Lives predicted by two crack growth rate models are compared with the lives measured in field and laboratory spectrum tests on rail steel. The two models are shown to be equivalent, except that one model reflects average rates and the other, the fast
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76efdc2f96be3ec47eabba7c593c2e37
https://doi.org/10.1016/0167-8442(91)90002-2
https://doi.org/10.1016/0167-8442(91)90002-2
Publikováno v:
Computers & Structures. 35:397-412
The problem of calculating actual residual stresses induced in cyclically loaded bodies at loads up to and including the maximal shakedown limit is considered. A novel theoretical approach based on minimization of a total complementary energy objecti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ab550cb13c0ddff84ce9821b3806590
https://doi.org/10.1016/0045-7949(90)90064-9
https://doi.org/10.1016/0045-7949(90)90064-9