Polarizing stress instrument-403 PTC
pe is dark brown pigment samples of the sample in, not rotating, by partial lens, observation out the window for a maximum stress is. Rotating inspection on the plate partial mirror, until the window into dark brown, the record at this time scale of rotating Angle and the thickness of the point, can use the equation conversion out stress value.
Formula: formula: stress = optical path difference / (be the measuring point light way long * bolts coefficient)
Mpa = nm / [cm * (nm/cm) / Mpa]
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01/23 03:04