A COHERENT GRADIENT SENSOR FOR CRACK TIP DEFORMATION MEASUREMENTS - ANALYSIS AND EXPERIMENTAL RESULTS

被引：133

作者：

TIPPUR, HV ^{[1
]}

KRISHNASWAMY, S ^{[1
]}

ROSAKIS, AJ ^{[1
]}

机构：

[1] CALTECH,GRAD AERONAUT LABS,PASADENA,CA 91125

来源：

INTERNATIONAL JOURNAL OF FRACTURE | 1991年 / 48卷 / 03期

关键词：

D O I：

10.1007/BF00036631

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A first order diffraction analysis of an optical interferometer, Coherent Gradient Sensor (CGS), for measuring surface gradients is presented. Its applicability in the field of fracture mechanics is demonstrated by quantitatively measuring the gradients of out-of-plane displacements around a crack tip in a three point bent fracture specimen under static loading. This method has potential for the study of deformation fields near a quasi-statically or dynamically growing crack.

引用

页码：193 / 204

页数：12

共 12 条

[1]

Beinert J, 1981, MECHANICS FRACTURE, V7, P281

[2] 3-DIMENSIONAL CRACK TIP DEFORMATION - AN EXPERIMENTAL-STUDY AND COMPARISON TO HRR FIELD [J].