Detection of micro-weld joint by magneto-optical imaging
作者： Xiangdong Gao , Yonghua Liu , Deyong You
DOI: 10.1016/J.OPTLASTEC.2013.12.027
关键词:
摘要: Abstract It is required that the laser beam focus should be controlled to accurately follow weld joint center during butt welding; therefore, position must detected automatically in real-time. An approach for detecting micro-weld (weld gap less than 0.1 mm) based on magneto-optical (MO) imaging investigated butt-joint welding of low carbon steel. Magneto-optical sensor was used capture dynamic images joint. Weld MO image gray distribution features were analyzed extract transition zone The influences a different magnetic field intensity and speed mainly studied. Under conditions where path, or varies, it has been found using magneto-optic technology could effectively detect Different positions have with various intensities. Experimental results show little influence detection position.
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