EFFECT OF CRACK CLOSURE ON ULTRASONIC DETECTION OF FATIGUE CRACKS AT FASTENER HOLES

被引：0
|
作者：
Bowles, S. J. [1 ]
Harding, C. A. [1 ]
Hugo, G. R. [1 ]
机构：
[1] Def Sci & Technol Org, Fishermans Bend, Vic 3207, Australia
来源：
REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 28A AND 28B | 2009年 / 1096卷
关键词：
Ultrasonics; Crack Closure; Fatigue; Nondestructive Evaluation;
D O I：
暂无
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The ultrasonic response from closed fatigue cracks grown in aluminium alloy specimens using a representative aircraft spectrum loading has been characterised as a function of tensile applied load using pulse-ccho 45 degrees shear-wave ultrasonic C-scans with focused immersion transducers. Observed trends with crack size and applied load are described and compared to results for artificial machined defects. The results demonstrate that crack closure significantly reduces the ultrasonic response compared to open cracks or machined defects.
引用
收藏
页码：1878 / 1885
页数：8
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