An automated radiographic NDT system for weld inspection: Part II - Flaw detection

被引：95
作者：
Liao, TW
Li, YM
机构：
[1] Louisiana State Univ, Dept Ind & Mfg Syst Engn, Baton Rouge, LA 70803 USA
[2] Louisiana State Univ, Dept Comp Sci, Baton Rouge, LA 70803 USA
来源：
NDT & E INTERNATIONAL | 1998年 / 31卷 / 03期
关键词：
radiographic images; weld inspection; image processing; curve fitting;
D O I：
10.1016/S0963-8695(97)00042-X
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
An automated radiographic NDT system for weld inspection has been developed. The entire system consists of two major components: weld extraction and flaw detection. Part I of the system implemented a weld extraction methodology, which has been presented in a previous paper. This paper presents Part II of the system dealing with the detection of welding flaws. The flaw detection methodology is developed based on the fitted line profiles of a weld image and consists of four modules: preprocessing, curve fitting, profile-anomaly detection, and postprocessing. The successful detection rate and false alarm rate of the methodology are reported based on the test results of 24 representative welds. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：183 / 192
页数：10
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