Time-of-flight diffraction (TOFD) technique for accurate sizing of surface-breaking cracks

被引：40

作者：

Baby, S ^{[1
]}

Balasubramanian, T

Pardikar, RJ

Palaniappan, M

Subbaratnam, R

机构：

[1] Reg Engn Coll, Dept Phys, Tiruchirappalli 15, India

[2] Bharat Heavy Elect Ltd, NDTL, Tiruchirappalli, Tamil Nadu, India

[3] Indira Gandhi Ctr Atom Res, Kalpakam, Tamil Nadu, India

来源：

INSIGHT | 2003年 / 45卷 / 06期

关键词：

D O I：

10.1784/insi.45.6.426.52885

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

This paper deals with an experimental study for evaluation of TOFD technique for determination of size of the surface-breaking cracks. It extends the results presented in a previous paper((1)). The study was confined to simulated cracks (machined slits). Difficulty was experienced using TOFD to size simulated cracks extending less than about 2 mm depth. This is due to the presence of the lateral wave, which obscures the tip-diffracted signals from the simulated cracks close to the surface and also due to the inherent lack of time resolution near the surface. Experimental errors are presented.

引用

页码：426 / 430

页数：5

共 19 条

[1] Baby S, 2002, INSIGHT, V44, P679
[2] BETTI F, 1999, EMERGING ULTRASONIC, V4
[3] BROWNE B, 1997, TIME FLIGHT DIFFRACT, V2
[4] CARTER P, 1984, BRIT J NONDESTRUCTIV, P354
[5] CHARLESWORTH JP, ENG APPL ULTRASONIC
[6] GINZEL E, NDT ENCY ULTRASONIC
[7] HAWKER B, 2000, TOFD MADE SIMPLE NDT
[8] JUST T, 1997, ULTRASONIC CRACK DEP, V2
[9] MONDAL S, 2000, NDT ENCY ULTRASONIC, V5
[10] DIFFRACTION OF ELASTIC-WAVES BY CRACKS - APPLICATION TO TIME-OF-FLIGHT INSPECTION
OGILVY, JA
TEMPLE, JAG
[J]. ULTRASONICS, 1983, 21 (06) : 259 - 269

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