Abstract

An optical arrangement has been devised that will permit the measurement of one component of the relative displacement, and therefore the corresponding strain, in a surface at nonambient temperatures by use of coherent optics. The method is based on the technique of moiré interferometry with illumination at grazing incidence. A demonstration of principle is described, with the beams passing through the flame of a blowtorch.

© 1997 Optical Society of America

Moiré interferometry with white light

Daniel Post
Appl. Opt. 18(24) 4163-4167 (1979)

Moiré interferometry

S. Yokozeki and S. Mihara
Appl. Opt. 18(8) 1275-1280 (1979)

Determination of the optical-axis orientation of a uniaxial crystal by frequency-domain interferometry

L. Zheng, O. A. Konoplev, and D. D. Meyerhofer
Opt. Lett. 22(12) 931-933 (1997)

Optical differentiation of displacement patterns using moire interferometry

Krzysztof Patorski and Matgorzata Kujawinska
Appl. Opt. 24(18) 3041-3048 (1985)

Two-way gratings for strain analysis using moire and moire interferometry techniques

Krzysztof Patorski and M. Kujawinska
Appl. Opt. 25(7) 1105-1110 (1986)