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Proceedings Paper

Recent applications of TV holography and shearography
Author(s): Nandigana K. Krishna Mohan; Henrik O. Saldner; Nils-Erik Molin
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Paper Abstract

TV holography is used to measure the components of the deformation vector, whereas TV shearography is used to obtain the derivatives of the displacement components. In this paper, we highlight a novel approach to split the CCD into two parts which enables to extract entirely different information from a single experimental configuration. A holo-shearography configuration provides simultaneous measurement of out-of-plane displacement and its slope change in real time. Similarly a holo-comparative configuration multiplexes an out-of-plane displacement configuration and a comparative interferometric configuration. Few experimental results using both these configurations are presented. In addition TV holography is implemented for vibration studies on an Indian classical musical instrument--Veena. The preliminary studies on a model veena are demonstrated.

Paper Details

Date Published: 19 July 1996
PDF: 9 pages
Proc. SPIE 2861, Laser Interferometry VIII: Applications, (19 July 1996); doi: 10.1117/12.245173
Show Author Affiliations
Nandigana K. Krishna Mohan, Indian Institute of Technology (India)
Henrik O. Saldner, Lulea Univ. of Technology (Sweden)
Nils-Erik Molin, Lulea Univ. of Technology (Sweden)


Published in SPIE Proceedings Vol. 2861:
Laser Interferometry VIII: Applications
Ryszard J. Pryputniewicz; Gordon M. Brown; Werner P. O. Jueptner, Editor(s)

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