Abstract
Surface topography measurement is the micro topography measurement of samples to be tested, which plays an important role in measuring white light interferometer. Taking the B3-shaped penetration test block for nondestructive testing and the profilometer standard ball for length measurement as the main research objects. The depth and width of crack defects in the penetration test block are measured and analyzed, the radius of the spherical groove on the reverse side of the penetration test block is measured and analyzed, and the spherical radius of the profilometer standard ball is measured and analyzed. The measurement results show that there is little difference between the radius measurement of the penetration test block and the theoretical value. The measurement of crack width and depth will contribute to the qualitative analysis of the crack, and the measurement of the profilometer standard ball provides a non-contact measurement means.
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