Application of fractal theory in examination of resistance spot welding quality
Application of fractal theory in examination of resistance spot welding quality
- Author(s): Hou Zhanfeng ; Wu Pei ; Xue Jing ; Han Jingyu
- DOI: 10.1049/cp.2010.1336
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- Author(s): Hou Zhanfeng ; Wu Pei ; Xue Jing ; Han Jingyu Source: International Conference on Advanced Technology of Design and Manufacture (ATDM 2010), 2010 p. 422 – 424
- Conference: International Conference on Advanced Technology of Design and Manufacture (ATDM 2010)
- DOI: 10.1049/cp.2010.1336
- ISBN: 978 1 84919 238 5
- Location: Beijing, China
- Conference date: 23-25 Nov. 2010
- Format: PDF
Resistance spot welding is a technology applied extensively in mechanical manufacturing industry, non-destructive testing of resistance spot weld quality has been a hot research project in welding field. In this paper, spot welding tests were carried out and the welding spot surface images were acquired. Testing calculational formula of box-counted dimension were introduced. Calculational method about box-counted dimension was given and program about dimension and image processing based on Matlab were projected. In the end, the relationship between fractal dimension and tensile strength of the welding spot was analyzed, the result showed that the fractal dimension of the welding spot is correlated with the tecsile strength of the welding spot. It provides a basis on using welding spot imprint image to examine the weld quality.
Inspec keywords: spot welding; production engineering computing; fractals; nondestructive testing; image processing; tensile strength
Subjects: Production facilities and engineering; Optical, image and video signal processing; Industrial applications of IT; Computer vision and image processing techniques; Plasticity (mechanical engineering); Testing; Production engineering computing; Joining processes and welding
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