Characterization of spontaneous magnetic signals for residual stress in plasma transferred arc welding process

Qian, Zhengchun; Huang, Haihong; Zhao, Lunwu; Ke, Qingdi; Han, Gang

doi:10.1007/s40194-018-0670-y

Cited by 7 publications

(1 citation statement)

References 26 publications

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“…Literature [10] uses image processing algorithms to extract the characteristic parameters of the weld pool image during the welding process in the process of wire‐filled pulse GTAW, establishes a model to describe the corresponding weld pool shape information, and lays the foundation for the next step of the welding process. Literature [11] obtained the visual information of the weld surface through a self‐built binocular stereo vision system, analysed and processed the visual information to extract the edge contour of the weld formation, explored the image information representation method of multiple formation parameters of the weld, and finally proposed A new method for judging weld formation based on binocular stereo vision. Literature [12] uses a three‐light path vision sensor system to simultaneously collect images of the molten pool directly in front, diagonally behind, and diagonally below the welding pool, and project the three images onto the same image.…”

Section: Related Workmentioning

confidence: 99%

Research on mapping recognition of arc welding molten pool characterisation and penetration state based on embedded system

Zhu

Liu

2023

IET Computers & Digital Tech

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In order to explore the mapping recognition of arc welding molten pool characterisation and penetration state, according to the idea of embedded system construction, this article adopts the idea of software and hardware co-design to find the zero-crossing point of the second derivative in welding image edge detection, and give a threshold. When the absolute value of the first-order derivative exceeds the threshold and has a different sign with the first-order derivative of the previous edge, it is judged as a valid edge. The welding current adopts a symmetrical pulsed AC square wave, and the proportion of heat flow input is high. At the base current, the arc light is darker, so a clear image is obtained. This article designs a simulation experiment to verify the effect of the embedded system in this article. From the experimental research, it can be known that the embedded system constructed in this article can play a certain role in the mapping recognition of the arc welding molten pool characterisation and penetration state.

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Section: Related Workmentioning

confidence: 99%