Method for detecting wave velocity, material state and damage degree based on stress wave field
A technology of material state and damage degree, which is used in material analysis using sonic/ultrasonic/infrasonic waves, measurement of ultrasonic/sonic/infrasonic waves, and analysis of solids using sonic/ultrasonic/infrasonic waves. Effect
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[0034] Such as figure 1 Described is a method for detecting stress wave velocity based on two-dimensional stress wave field characteristics described in the implementation example of this application. The specific operation steps are:
[0035] Step 101, using the laser marking machine to optimize the parameters of the grid to make a transmission grid line, direct current strong light is irradiated through the grid line to form static reflection stripes on the surface of the test piece, and after total reflection on the surface of the test piece, the Static reflection stripes are captured by a high-speed camera;
[0036]In this embodiment, the laser marking machine optimization parameter grid method is used to make the transmission grid line, the scanning power of the laser marking machine is increased, and the scanning is performed on an aluminum sheet with a thickness of 0.1 mm. The scanning pattern is 20 parallel rectangles. The length is 20mm, the width is 1.5mm, and the s...
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