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.

fYear

2006

fDate

24-27 April 2006

Firstpage

81

Lastpage

85

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2006. IMTC 2006. Proceedings of the IEEE

Conference_Location

Sorrento

ISSN

1091-5281

Print_ISBN

0-7803-9359-7

Electronic_ISBN

1091-5281

Type

conf

DOI

10.1109/IMTC.2006.328179

Filename

4124281