Method for measuring biaxial stress in a body subjected to stres

Details Method for measuring biaxial stress in a body subjected to stres Method for measuring biaxial stress in a body subjected to stres

1976-06-28

1977-07-05

Gill, James J.

Measuring and testing

Ductility or brittleness

73 677, G01L 100

Patent

active

040331822

ABSTRACT:
A method for measuring stress in test articles including the steps of obtaining for a calibrating specimen a series of transit time differentials between the second wave echo for a longitudinal wave and the first wave echo for each of a pair of shear waves propagated through the specimen as it is subjected to a known stress load of a series of stress loads for thus establishing a series of indications of the magnitudes for stress loads induced in the specimen, and thereafter obtaining a transit time differential between the second wave echo for a longitudinal wave and the first wave echo for each of a pair of shear waves propagated in the planes of the stress axes of a test article and comparing the transit time differential thus obtained to the series of transit time differentials obtained for the specimen to determine the magnitude of biaxial stress in the test article.

REFERENCES:
patent: 3587297 (1971-06-01), Kammer
patent: 3812709 (1974-05-01), Benson et al.

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