Defects and in-service fatigue life of truck wheels

被引：25

作者：

Carboni, M

Beretta, S

Finzi, A

机构：

[1] Politecn Milan, Dipartimento Meccan, I-20158 Milan, Italy

[2] Gianetti Ruote SpA, I-20020 Ceriano Laghetto, MI, Italy

来源：

ENGINEERING FAILURE ANALYSIS | 2003年 / 10卷 / 01期

关键词：

defects; wheels; fatigue strength; automotive failures;

D O I：

10.1016/S1350-6307(02)00036-5

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

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.

引用

页码：45 / 57

页数：13