Shock and Vibration

Shock and Vibration / 1996 / Article

Open Access

Volume 3 |Article ID 195675 | https://doi.org/10.3233/SAV-1996-3207

William Xinzuo Li, Larry D. Mitchell, Min-Fu Lu, Michael L. Neumann, "Mapping Nonsquare and Unevenly Spaced 2-D SLDV Data of an Aircraft Fuselage by Using Spatial DFT-IDFT Techniques", Shock and Vibration, vol. 3, Article ID 195675, 6 pages, 1996. https://doi.org/10.3233/SAV-1996-3207

Mapping Nonsquare and Unevenly Spaced 2-D SLDV Data of an Aircraft Fuselage by Using Spatial DFT-IDFT Techniques

Received29 Dec 1994
Accepted01 Sep 1995

Abstract

The scanning laser Doppler vibrometry (SLDV) technique provides velocities of a structure at 2-dimensional (2-D) angularly evenly spaced (in the laser scanning sense) data points. This causes an unevenly spaced data point distribution on the surface of the test structure. In many cases evenly spaced data point distribution with square or rectangular grids is highly desirable. In this study the SLDV velocity data of a partial surface area of an aircraft fuselage were mapped to truly spatial evenly spaced coordinates by using the spatial DFT-IDFT technique with minimum distortion. This 2-D data mapping technique certainly is not limited to the fuselage, hut can he very useful for many other 3-D structures.

Copyright © 1996 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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