With the increasing industrial automation, the requirement of the non-destructive testing technology tends to be more
and more urgent. In the paper, regarding the difficulty of testing the surface integrity, the author firstly introduces the
principle of the non-destructive testing technology, and then emphatically analyzes the application in the field of metal
surface, finally presents the advantages and disadvantage of the non-destructive testing technology. This paper gives the
basic structure and working mechanism of the laser ultrasound non-destructive testing system. The experiment proves
the feasibility and effectiveness of the system. At last, the problem and development orientation of the laser ultrasound
non-destructive testing technology are also pointed out.
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