Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1988-08-30
1989-09-12
Myracle, Jerry W.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
356 32, G01L 124
Patent
active
048648647
ABSTRACT:
A sample of material is rotated within a pair of parallel, spaced-apart laser beams. Variations in the diameter of the sample are determined with azimuth from the amounts of the laser beams intercepted by the sample as it rotates about an axis perpendicular to the plane of the laser beams. The sample is translated along this axis within the path of the laser beams so that the diameter of the sample is determined for a plurality of spaced-apart planes through the sample perpendicular to the axis of rotation. The deformation of the material with stress is determined by measuring the variations in diameter of the sample as the stress on the sample is changed.
REFERENCES:
patent: 3587301 (1971-06-01), Chau
patent: 3839899 (1974-10-01), McMillen
patent: 4380930 (1983-04-01), Podhrasky et al.
patent: 4688238 (1987-08-01), Sprunt et al.
Montgomery Robin B.
Sprunt Eve S.
Yale David P.
Hager Jr. George W.
McKillop Alexander J.
Mobil Oil Corporation
Myracle Jerry W.
Speciale Charles J.
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