Nondestructive evaluation of fatigue changes of composite structure by laser-excited ultrasonic waves

被引：2

作者：

Karabutov, AA ^{[1
]}

Podymova, NB ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Ctr Int Laser, Moscow 119899, Russia

来源：

NONDESTRUCTIVE EVALUATION OF MATERIALS AND COMPOSITES II | 1998年 / 3396卷

关键词：

laser excitation of ultrasound; ultrasound attenuation; fatigue changes of composites;

D O I：

10.1117/12.301515

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Wide-band acoustic spectroscopy with laser excitation of ultrasound was carried out for glass-fiber-reinforced composite samples. Attenuation coefficient of ultrasonic waves in these samples was measured in the frequency range 1 divided by 20 MHz. Resonant peaks of ultrasound attenuation were found for green-state composite samples caused by periodic structure of composite. Transformation of ultrasound attenuation spectra was observed for samples after service life testing because of fatigue changes of composite structure.

引用

页码：255 / 261

页数：3