Phase-stepping digital speckle-pattern interferometry and its           applications

Wen Zheng

doi:10.1117/12.140783

5 February 1993 Phase-stepping digital speckle-pattern interferometry and its applications

Wen Zheng

Proceedings Volume 1755, Interferometry: Techniques and Analysis; (1993) https://doi.org/10.1117/12.140783
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

This paper describes an automated measuring system using reversal two-step phase algorithm. An automated analysis package has been developed for phase-stepped fringe fields. Factors limiting the measuring accuracy and reliability are discussed. This system has been applied to the measurements of thermal deformation, in-plan deformation, resonant vibration amplitude measuring, and nondestructive testing of carbon fiber honeycomb structure.

Citation Download Citation

Wen Zheng "Phase-stepping digital speckle-pattern interferometry and its applications", Proc. SPIE 1755, Interferometry: Techniques and Analysis, (5 February 1993); https://doi.org/10.1117/12.140783

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