Strain measurements at railway wheels

被引：12

作者：

Grosse, M.

Ottlinger, P.

机构：

[1] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[2] Univ Appl Sci, Dresden, Germany

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2006年 / 437卷 / 01期

关键词：

railway wheels; residual stress; neutron diffraction;

D O I：

10.1016/j.msea.2006.04.060

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The development of the radial strain component in railway wheels was investigated by neutron diffraction. In the as manufactured state four railway wheels were investigated. In all four wheels no significant strains were found. After 18,400 km usage first strain gradients close to the outer surface of the wheels were detected. In axial middle ranges the changes in strain are weak. After an usage of 6 1,000 km the gradients becomes strong at the axial outer position between about +700 mu epsilon close below the tread and -500 mu epsilon in a depth of 12.5 nun below the tread. At axial middle positions also strain gradients are formed. The end of live state (5 10,000 km) differs only slightly from the state measured after a usage of 61,000 km.. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：88 / 92

页数：5

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