Piezoelectric sensor for stress intensity factor measurement of two dimensional cracks

被引：13
|
作者：
Fujimoto, Y [1 ]
Shintaku, E [1 ]
Pirker, G [1 ]
Liu, G [1 ]
机构：
[1] Hiroshima Univ, Grad Sch Engn, Fac Engn Dept Engn Syst, Dept Social & Environm Engn, Higashihiroshima 7398527, Japan
来源：
ENGINEERING FRACTURE MECHANICS | 2003年 / 70卷 / 09期
关键词：
piezoelectric material; piezoelectric constitutive law; fatigue crack; stress intensity factor; electric charge; integration circuit linear fracture mechanics;
D O I：
10.1016/S0013-7944(02)00091-7
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A piezoelectric sensor for the measurement of stress intensity factors (SIFs) of two dimensional cracks induced in a structure is developed. Two small pieces of piezoelectric elements are adhered near the crack tip so that the piezoelectric elements are placed close to each other and the crack tip's position is between them. The electric currents from the piezoelectric elements are integrated by integration circuits and the output voltages which are proportional to the electric charge induced in the piezoelectric elements are measured. The SIFs of Mode I (K-I) as well as of Mode II (K-II) based on the piezoelectric constitutive law and fracture mechanics are calculated. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1203 / 1218
页数：16
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