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Proceedings Paper

Remote optical measurement of thermal and mechanical properties of engineering structures
Author(s): German Da Costa; Juan Enrique Parra
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Paper Abstract

Performance of an optoelectronic setup allowing heating of a remote engineering structure and subsequent analysis of the resulting deformation is described. The structure is heated by a CO2 laser beam. This gives rise to a thermal stress in the heated region and to a global deformation of the structure. The latter cited is also illuminated by a HeNe laser beam. The light intensity distribution in the backscattered HeNe light wave is digitally recorded and processed by convenient software, which yields the structure deformation and allows the remote observer to get information about its thermal and mechanical properties. A typical application of the setup, consisting in remote damping of free vibrations of a cantilever bar, is presented.

Paper Details

Date Published: 18 August 2005
PDF: 12 pages
Proc. SPIE 5880, Optical Diagnostics, 58800B (18 August 2005); doi: 10.1117/12.613957
Show Author Affiliations
German Da Costa, Univ. Simon Bolivar (Venezuela)
Juan Enrique Parra, Univ. Simon Bolivar (Venezuela)

Published in SPIE Proceedings Vol. 5880:
Optical Diagnostics
Leonard M. Hanssen; Patrick V. Farrell, Editor(s)

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