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Proceedings Paper

Desensitized TV holography applied to static and vibrating objects for large deformation measurements
Author(s): Henrik O. Saldner; Nils-Erik Molin; Nandigana K. Krishna Mohan
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Paper Abstract

This paper illustrates a real time desensitized outof-p1ane displacement configuration for the measurement of large deformations of a diffusely reflecting object. The optical configuration is implemented to study the behavior of engineering structures subjected to large static as well as vibration deflections. Phase stepping is provided in the optical set-up to obtain the deformation maps from the interferograms. For vibration analysis, the possibility of incorporating both phase stepping and bias vibration on a single mirror is also demonstrated. Theoretical analysis along with experimental results are presented.

Paper Details

Date Published: 17 July 1996
PDF: 8 pages
Proc. SPIE 2860, Laser Interferometry VIII: Techniques and Analysis, (17 July 1996); doi: 10.1117/12.276325
Show Author Affiliations
Henrik O. Saldner, Lulea Univ. of Technology (Sweden)
Nils-Erik Molin, Lulea Univ. of Technology (Sweden)
Nandigana K. Krishna Mohan, Indian Institute of Technology/Madras (India)

Published in SPIE Proceedings Vol. 2860:
Laser Interferometry VIII: Techniques and Analysis
Malgorzata Kujawinska; Ryszard J. Pryputniewicz; Mitsuo Takeda, Editor(s)

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