Photoelastic stress analysis

Details Photoelastic stress analysis Photoelastic stress analysis

1993-03-03

1995-03-21

Limanek, Robert P.

Optics: measuring and testing

Material strain analysis

With polarized light

356365, G01B 1118

Patent

active

054001315

ABSTRACT:
Polarized light from a polarizer 12 is passed through a stressed birefringent object 14 and an analyser 16 to produce a fringe pattern representative of the stress in the object 14. The fringe pattern is observed with a CCD camera 18 and intensity information of the pattern is input to a computer 22. The process is repeated for at least two wavelengths of light and the information for the different wavelengths is combined to form a stress map of the object 14 for display on a VDU 24.

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