Study of transient deformations with pulsed TV holography: Application to crack detection

被引：44

作者：

Fernandez, A ^{[1
]}

Moore, AJ ^{[1
]}

PerezLopez, C ^{[1
]}

Doval, AF ^{[1
]}

BlancoGarcia, J ^{[1
]}

机构：

[1] CTR INVEST OPT,LEON 37000,MEXICO

来源：

APPLIED OPTICS | 1997年 / 36卷 / 10期

关键词：

pulsed TV holography; transient events; crack detection;

D O I：

10.1364/AO.36.002058

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report the measurement of reproducible transient deformations with single-pulsed-subtraction and double-pulsed-addition TV holography with both in-plane and out-of-plane optical configurations. An original synchronization system (controlling mechanical excitation of the object, firing the laser pulses, and image acquisition) used to obtain the subtraction and the addition correlation fringes is described. Experimental results are presented for the propagation of mechanical shock waves in a cantilever specimen and their subsequent diffraction by a crack in the specimen. These preliminary results show that the technique may be used for crack detection. (C) 1997 Optical Society of America.

引用

页码：2058 / 2065

页数：8