Pre- and post-weld inspection using laser vision

被引:7
作者
Reichert, C [1 ]
机构
[1] Edison Welding Inst, Columbus, OH 43221 USA
来源
NONDESTRUCTIVE EVALUATION OF MATERIALS AND COMPOSITES II | 1998年 / 3396卷
关键词
defects; weld shape; fillet welds; tailored blank; automation; quality control;
D O I
10.1117/12.301529
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The most widely utilized welding evaluation technique is visual testing (VT). Major limitations of visual inspection are the subjectivity of judgments of the acceptability of the weld and time required to perform the inspection. Machine vision technology can replace or augment VT to curtail these limitations. Pre-weld inspection is an effective and efficient means of determining size and fit-up problems as well as seam tracking. Post-weld inspection with machine vision is efficient in that it saves time, provides a record of the inspection, and establishes a quantitative standard for measurements. This paper discusses laser-based, structured-light machine vision technology and its application toward automated pre-and post-weld inspection. Practical industrial applications including small, laser-welded tailored blanks and larger fillet welds are discussed along with results of initial testing.
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页码:244 / 254
页数:3
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