SIMPLIFIED NDE OF A CLOSED VERTICAL CRACK USING ULTRASONICS

被引：21

作者：

SAKA, M

UCHIKAWA, T

机构：

[1] Department of Mechanical Engineering, Tohoku University, Sendai

来源：

NDT & E INTERNATIONAL | 1995年 / 28卷 / 05期

关键词：

CLOSED CRACK; ULTRASONIC INSPECTION; INVERSE PROBLEM;

D O I：

10.1016/0963-8695(95)00029-W

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ultrasonic testing using a normally incident longitudinal wave is used for sizing a closed crack. The crack exists vertically on the back-wall of the inspected plate. in order to evaluate the closed crack, the relationship between the first back-wall echo height and the crack depth for an open crack as the basis for evaluating the closed crack is determined experimentally and is introduced to the analysis of echo height for the closed crack. The unknown parameters in the evaluation of the closed crack, such as crack depth and the stress closing the crack, are determined by comparing the first back-wall echo height obtained through both analysis and experiment on the closed crack.

引用

页码：289 / 296

页数：8

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