Title :
Research for Ultrasonic Fast-Identification of the Stick-Weld Defect
Author :
Zhao, Xin ; Zhang, Yansong ; Chen, Guanlong
Author_Institution :
Sch. of Mech. Eng., Shanghai Jiao Tong Univ.
Abstract :
When stick-weld defect happens, the current inspection methods of weld quality are difficult to achieve an ideal result. This paper firstly analyzed the echo characteristics of ultrasonic curves which could reflect spot-welded joint defects. The peak-value marking algorithm was developed to identify joint defects quickly. Finally, a lot of experiments were conducted to verify proposed methods. Results showed that this fast-identification method is credible and the identification rate can reach 95% in total test samples
Keywords :
flaw detection; inspection; reliability; ultrasonic materials testing; welding; echo characteristics; spot-welded joint defects; stick-weld defect; ultrasonic curves; ultrasonic fast-identification; weld quality; Algorithm design and analysis; Attenuation; Eigenvalues and eigenfunctions; Inductors; Inspection; Instrumentation and measurement; Job design; Mechanical engineering; Spot welding; Testing; UT; echo characteristics; stick-weld defects; the peak-value marking algorithm;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2006. IMTC 2006. Proceedings of the IEEE
Conference_Location :
Sorrento
Print_ISBN :
0-7803-9359-7
Electronic_ISBN :
1091-5281
DOI :
10.1109/IMTC.2006.328179
