Online monitoring and evaluation of the weld quality of resistance spot welded titanium alloy

Abstract Resistance spot welding is an important branch of the welding subject, and has been widely used in aviation, aerospace, automotive and other industrial areas due to its high efficiency, low cost and small deformation. As the improvement of the product quality, online monitoring of welding quality has become an urgent issue. This paper puts forward an information acquisition and evaluation method based on the online monitoring of the weld quality of spot welded titanium alloys. Through the real-time acquisition and analysis of the welding parameters, the characteristic information of the acquired signal was extracted to achieve the reliable quality assessment of the welding process.