摘要
采用实时全息干涉计量摄影系统 ,记录岩石试件正向受压下干涉条纹的形变规律。配合声发射定位测量 ,可以测定岩石试件微裂纹扩展时间、位置和强度。初步的实验已经观察到干涉条纹是在空间定域的 ,微裂纹的扩展与局部应力的集中有关 ,且其延伸方向是应力场高梯度变化的方向等 。
ln order to find the relationships between the distortion rule of the rock and its surrounding stress field,a real-time optical holographic setup is used to record the rock and the variation of the sample,the wave-forms of ultrasonic emission stimulated by the micro-crack are recorded by a transient auto wave-form recorded to determine the time,location and intensity of the actions of micro-cracks.The experiment has brought some phenomena worthy of the study.This method provides a useful experimental approach to study brittleness materials
出处
《激光杂志》
CAS
CSCD
北大核心
2003年第3期56-57,共2页
Laser Journal
