Three-Beam Interferometric Technique For The Determination Of Strain Of Curved Surfaces

F. P. Chiang; C. C. Kin

doi:10.1117/12.935920

22 September 1983 Three-Beam Interferometric Technique For The Determination Of Strain Of Curved Surfaces

F. P. Chiang, C. C. Kin

Proceedings Volume 0416, Applications of Optical Metrology: Techniques and Measurements II; (1983) https://doi.org/10.1117/12.935920
Event: 1983 Technical Symposium East, 1983, Arlington, United States

Abstract

By using three noncoplanar coherent laser beams intersecting one another at angles larger than 30° three sets of interferometric grating are generated. By placing a specimen coated with a photosensitive material inside this grating field and exposing to it before and after load three distinctive moire fringe patterns can be obtained, from which principal surface strains can be calculated by using the strain rosette formula.

Citation Download Citation

F. P. Chiang and C. C. Kin "Three-Beam Interferometric Technique For The Determination Of Strain Of Curved Surfaces", Proc. SPIE 0416, Applications of Optical Metrology: Techniques and Measurements II, (22 September 1983); https://doi.org/10.1117/12.935920

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