Fourier transform fringe analysis of ESPI fringes from rotating components

Richard W. T. Preater; Robin C. Swain

doi:10.1117/12.145565

28 May 1993 Fourier transform fringe analysis of ESPI fringes from rotating components

Richard W. T. Preater, Robin C. Swain

Proceedings Volume 1821, Industrial Applications of Optical Inspection, Metrology, and Sensing; (1993) https://doi.org/10.1117/12.145565
Event: Applications in Optical Science and Engineering, 1992, Boston, MA, United States

Abstract

The ability to measure in-plane displacement on the surface of a rotating structure under service conditions and real-time analysis to provide component strain distributions would form the ideal experimental optical technique. Pulsed Laser ESPI which can display interference patterns for in-plane displacement in conjunction with the Fourier transform method of fringe analysis is one attractive approach which is coming closer to this ideal. The optical system used enables a wide range of rotational speeds to be covered with tangential velocities up to 300 ms^-1. The paper describes how the fringe analysis may be carried out using a 80486 desk top computer.

Citation Download Citation

Richard W. T. Preater and Robin C. Swain "Fourier transform fringe analysis of ESPI fringes from rotating components", Proc. SPIE 1821, Industrial Applications of Optical Inspection, Metrology, and Sensing, (28 May 1993); https://doi.org/10.1117/12.145565

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