Laser measuring devices

Details Laser measuring devices Laser measuring devices

1988-06-24

1991-01-08

Rosenberger, Richard A.

Optics: measuring and testing

Material strain analysis

73775, 73800, 356373, 372 20, 372 92, G01B 1116

Patent

active

049830350

ABSTRACT:
In the present apparatus, a system converting stress in a structural member into strain by positioning a body of lasing material (creating a coherent beam) on a structural member. The body has parallel end faces. One is opposite a mirror attached to the structural member. The member strain varies laser cavity spacing and modulates the laser beam as a function of strain.

REFERENCES:
patent: 4275599 (1981-06-01), Kohlenberger et al.
patent: 4409842 (1983-10-01), Scott et al.
patent: 4452533 (1984-06-01), Miles et al.
patent: 4475812 (1984-10-01), Buczek et al.
patent: 4655597 (1987-04-01), Tamamoto et al.

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