Defects and in-service fatigue life of truck wheels
Defects and in-service fatigue life of truck wheels
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DOI：
10.1016/s1350-6307(02)00036-5
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发表时间：
2003-02-01
影响因子：
4
通讯作者：
Finzi, A
中科院分区：
文献类型：
--
作者：
Carboni, M;Beretta, S;Finzi, A
卡车车轮通常通过基于标准化载荷序列（卡洛斯载荷谱）的实验测试进行疲劳评估，这些载荷序列再现了真实的部件的典型使用寿命。本文讨论了制造工艺引起的缺陷对轮块加载疲劳寿命的影响。这项研究是由一批卡车车轮的过早使用故障引发的。调查首先涉及材料质量控制的疲劳和裂纹扩展测试，然后是意外故障起源处的缺陷检测。这些数据已被用来评估缺陷的可接受性，并估计使用目前的裂纹扩展模型的验证测试下的寿命。(C)2002爱思唯尔科技有限公司版权所有。
Truck wheels are usually assessed against fatigue by experimental tests based on standardised load sequences (CARLOS load spectra) which reproduce a typical service life of the real component. The present paper deals with the effect of defects, caused by the manufacturing process, on the fatigue life of wheels subjected to block loading tests. The research was prompted by premature service failures of a batch of truck wheels. The investigation firstly dealt with fatigue and crack growth tests for the quality control of the material and then with the detection of defects at the origin of the unexpected failures. The data have been used to assess the acceptability of defects and to estimate life under proof tests using current crack propagation models. (C) 2002 Elsevier Science Ltd. All rights reserved.