| 摘要 |
<P>PROBLEM TO BE SOLVED: To overcome problems in a conventional defect detection technique in which defects of electric resistance welded parts cannot be detected sufficiently, and mixing of an electric resistance welded pipe including a local part deteriorated in mechanical properties into a resultant product cannot be prevented in some cases. <P>SOLUTION: There is provided a welding defect detection system in which a luminous state of a welded part, which is an object of welding operation, is taken as an image by a spark sensor 12, a spark is checked from the taken image, monitoring is performed regarding a luminance of the object as an image signal by a DS sensor 10, and a monitored welded part is inspected by an ultrasonic flaw detector (array UT) 11 using an array probe. <P>COPYRIGHT: (C)2013,JPO&INPIT |
