Abstract
In order to solve the problem that the fuzzy green laser stripe affects the measurement accuracy during the dimension measurement of hot workpiece, the underlying cause is analyzed and the green laser stripe width is optimized. The relationship between the elastic coefficient and Lame constants is derived by constructing a two-dimensional wave equation. By using this relationship, the microscopic model of electromagnetic wave propagation is presented to research the electromagnetic wave on hot workpiece. The electromagnetic wave is produced by the green laser stripe of the same power and the different width. Then on the premise of meeting the measurement accuracy, the optimal width of the green laser stripe is chosen to make the green laser stripe clearer on hot workpiece. And the accuracy of the green laser measurement system is improved. The microscopic model of electromagnetic wave propagation proposed in the paper is viable according to the experiment results.
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