Optics: measuring and testing – Material strain analysis – By light interference detector
Patent
1996-01-16
1997-12-30
Turner, Samuel A.
Optics: measuring and testing
Material strain analysis
By light interference detector
356354, G01B 902
Patent
active
057036802
ABSTRACT:
When the pressure on a reinforced rubber object is varied, weaker portions of the object expand more than surrounding areas of the object. By (a) illuminating the object with single phase monochromatic light which is separated into more than one beam, (b) causing the object to distort by abrasion or expansion, (c) observing the interference patterns on the object as it distorts and (d) analyzing stress patterns revealed by the interference patterns, these physical changes can be detected, recorded and analyzed.
REFERENCES:
patent: 4794550 (1988-12-01), Greivenkamp
patent: 5257088 (1993-10-01), Tyson et al.
Direct Determination of Flexural Strain in Plates Using Projected Gratings, Liang et al, Sep. 1978, pp. 401-405.
Dunn William Frank
Hooper Michael Lynn
Maas Wayne David
Maloney John Michael
The Goodyear Tire & Rubber Company
Turner Samuel A.
Wheeler David E.
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