Detection of crack nucleation in sheet metalforming by monitoring infrared radiation

被引：4
|
作者：
Andrianopoulos, NP [1 ]
Champidis, KT [1 ]
Iliopoulos, AP [1 ]
机构：
[1] Natl Tech Univ Athens, Fac Sci Appl, Dept Mech, GR-15773 Athens, Greece
来源：
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2003年 / 26卷 / 04期
关键词：
crack nucleation; infrared radiation; metalforming; plastic strains localisation; thermoelasticity;
D O I：
10.1046/j.1460-2695.2003.00521.x
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In the present work a method is described for the early detection of large plastic strains localisation and subsequent crack nucleation in sheet metalforming. The method is based on the monitoring of the infrared radiation emitted from the material during stretching. It is concluded that the point of the final crack nucleation can be located in the very early stages of stretching, when overall mean strains are insignificant (less than 20% of the yielding strain of the material).
引用
收藏
页码：323 / 328
页数：6
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