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http://dx.doi.org/10.3795/KSME-A.2008.32.7.597

The Strain Measurement of One Point Spot Welded Zone Using the 3-D ESPI  

Cha, Y.H. (조선대학교)
Kang, D.J. (조선대학교)
Jang, H. (조선대학교)
Jang, K.C. (한국생산기술연구원)
Sung, S.B. (조선대학교)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.32, no.7, 2008 , pp. 597-601 More about this Journal
Abstract
Currently knowledge of strain in welds has mainly been obtained from strain gaging method: that is directly attaching most of the material to the gage. The very few non-contact methods are still in the early stage. One of the non-contact methods is by the use of the laser that has high-level of the accuracy for the measurement, and this laser also has excellent characteristics on which many studies for its applications are focused throughout the many fields. A method of study is on the measurement of the strain caused by the characteristics of the spot welded zone which is used with 3-D ESPI system that is functionally modified through the laser ESPI(Electronic Speckle Pattern Interferometry) system. This system employed the SGCC 1.2t which are mainly used for the steel plate such as automobile, structure, building material and electronic appliances.
Keywords
Spot Welded; SGCC; ESPI; Straine;
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