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Proceedings Paper

Measurement of windage heating effects on high-speed rotating disks using ESPI
Author(s): Richard W. T. Preater; Robin C. Swain
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Paper Abstract

Real-time analysis of component deformation under service conditions would form the optimum experimental optical technique. Approaching this ideal is pulsed laser electronic speckle pattern interferometry (ESPI) which can provide in-plane displacement information from high speed rotating components over a wide range of rotational speeds with tangential velocities currently up to 300 m s-1. With the rapid advancement of computers, the Fourier transform method of analysis of interference fringe patterns for full field information has been reduced to just a few minutes. The testing of high speed discs in air, with particular reference to gas turbine disc behavior has provided the ability to display the effects of windage heating of the discs, in addition to changes of speed. The technique is sufficiently accurate to record both short term differential heating across the disc, as well as the longer term overall growth.

Paper Details

Date Published: 23 June 1995
PDF: 11 pages
Proc. SPIE 2545, Interferometry VII: Applications, (23 June 1995); doi: 10.1117/12.212643
Show Author Affiliations
Richard W. T. Preater, City Univ. (United Kingdom)
Robin C. Swain, Univ. of California/San Diego (United States)

Published in SPIE Proceedings Vol. 2545:
Interferometry VII: Applications
Ryszard J. Pryputniewicz; Gordon M. Brown; Werner P. O. Jueptner, Editor(s)

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