Energy storage spot welding effect inspection

How is spot weld quality assessed?

Spot weld quality is assessed in several ways, ranging from physical weld nugget measurements, to ultrasonic inspection and mechanical strength testing. This paper investigates four commonly used weld quality testing protocols: tensile shear, a chisel test, ultrasonic inspection and peel strength testing.

How to predict welding spot defects during the production of body-in-white?

This paper aims to predict the welding spot defects during the production of body-in-white by constructing an inspection system using an improved, faster R-CNN model. This deep learning network model shows good performance on surface quality inspection for small object detection.

Does resistance spot welding vision inspection work?

Quantitative results on the spot welding dataset show that the proposed approach achieves successful results for resistance spot welding vision inspection. The resistance spot welding (RSW) has been extensively applied in autobody manufacturing, as an economic joining method to join similar and different metal sheets.

How reliable is spot welding?

Ultrasonic testing is the most commonly used method for inspection of spot welding in the automotive industry, but experiences from the industry show that its reliability is greatly dependent on operators' skill and testing environment.

How BIW welds are inspected?

At present, the quality inspection of BIW welds mainly includes two types of methods: non-visual and visual inspection . These methods can be divided into non-destructive testing technology and destructive testing technology.

What is a spot welding inspection system?

Chen et al. developed an infrared camera-based non-destructive system to inspect the quality of the spot welding in vehicle underbodies. The system can be used either as a real-time inspection system or as a post-weld inspection system with an induction heating device.