Quality estimation of resistance spot welding of stainless steel based on BP neural network

China Welding (English Edition)(2009)

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摘要
The end value of the dynamic resistance curve of stainless steel was proved to have strong correlation with nugget size by experiments, so it was an important factor for estimation of weld quality. BP neural network was employed to estimate the weld quality. The end value of the dynamic resistance curve, welding current and welding time were selected as the input variables while the nugget diameter, which is closely related to weld quality, was selected as the output variable. Testing results shows that such network has fine fault tolerance and real-time quality estimation is possible. ©2009 Editorial Board of CHINA WELDING.
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关键词
BP neural network,Dynamic resistance,Resistance spot welding
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