Predictions of Weld Strength of Resistance Spot Welding using Fuzzy Logic MATLAB toolbox and comparison With Experimental Results

Abstract

Spot welding is a resistance welding process for joining metal sheets by directly applying opposite forces with
pointed tips. The current and the heat generation are localized by the form of electrode. The amount of heat produced is
a function of current, time and resistance between the work pieces. The present work attempts experimental
investigations to study influence of important process parameters of resistance spot welding on weld strength, current
and cycle time are varied at three different levels for different thickness and manufactured specimens are tested for weld
strength. Prediction of weld strength is done by using fuzzy logic tool box of MATLAB,and compared with experimental
results.