Fatigue crack initiation and growth in a 35CrMo4 steel investigated by infrared thermography

被引：59

作者：

Plekhov, O

Pain-Luc, T

Saintier, N

Uvarov, S

Naimark, O

机构：

[1] ENSAM, CER Bordeaux, LAMEFIP, EA 2727, F-33405 Talence, France

[2] RAS, Inst Continuous Media Mech, Perm 614013, Russia

来源：

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2005年 / 28卷 / 1-2期

关键词：

crack growth; crack initiation; infrared thermography; middle-cycle fatigue;

D O I：

10.1111/j.1460-2695.2005.00856.x

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The present work is devoted to the investigation of fatigue crack initiation and growth in middle-cycle fatigue (similar to10(5) cycles). Smooth specimens made of 35CrMo4 quenched and tempered steel were loaded in fully reversed plane bending. Temperature field evolution in time was recorded with an infrared camera. The experimental results show that the local heating of metal under fatigue loading is a sensitive and accurate enough manifestation of small fatigue crack initiation. It is shown that the time evolution of the spatial standard deviation of the temperature field can be used to investigate the damage localization and to monitor both the crack initiation and the current location of the fatigue crack tip. This should help to investigate the behaviour of defect during cyclic loading.

引用

页码：169 / 178

页数：10

共 17 条

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