Residual stress measuring method and system

Details Residual stress measuring method and system Residual stress measuring method and system

2011-02-08

2011-02-08

Toatley, Gregory J (Department: 2877)

Optics: measuring and testing

Material strain analysis

By light interference detector

C356S032000

Reexamination Certificate

active

07884924

ABSTRACT:
A residual stress measuring method capable of measuring residual stress of the surface of an object to be inspected rapidly in a non-destructive non-contact manner, as well as a residual stress measuring system having such characteristics and being high in portability, are provided. The residual stress measuring system comprises a heating laser for heating an inspection area of an object to be inspected, a laser interferometer for irradiating the inspection area interferometric with laser light and measuring a deformation quantity within an elastic deformation range upon stress relief by heating in accordance with a laser interferometric method, and a data processor for measuring residual stress from the deformation quantity within the elastic deformation range upon stress relief of the object to be inspected.

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