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Proceedings Paper

Using Fast-Fourier-Transform (FIT) For The Phase-Doppler-Dp Erence-Analysis Of Powder Metal Sprays
Author(s): K. Bauckhage; A. Schone; TH . Wriedt
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Paper Abstract

Application of the phase-Doppler-difference-analysis to ,spraying and compacting molten metals to measure particle size and velocity distributions is difficult because of the high background noise level of the signals detected by the photodetectors. Common counter processors will not work properly with such noisy signals. Therefore a modified laser-Doppler-processor based on the fast Fourier transform is described and its performance evaluated by simulation and by analysing signals originating from rough and nonspherical CuAl particles.

Paper Details

Date Published: 16 January 1988
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Proc. SPIE 0952, Laser Technologies in Industry, (16 January 1988); doi: 10.1117/12.968878
Show Author Affiliations
K. Bauckhage, University of Bremen (Germany)
A. Schone, University of Bremen (Germany)
TH . Wriedt, University of Bremen (Germany)


Published in SPIE Proceedings Vol. 0952:
Laser Technologies in Industry

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