11 April 2013 Mobile speckle interferometer in the long-wave infrared for aeronautical nondestructive testing in field conditions
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Optical Engineering, 52(10), 101903 (2013). doi:10.1117/1.OE.52.10.101903
Abstract
We present the development of a speckle interferometer based on a CO[sub] 2 laser and using a thermal infrared camera based on an uncooled microbolometer array. It is intended to be used for monitoring deformations as well as detecting flaws in aeronautical composites, with a smaller sensitivity to displacement compared to an equivalent system using visible (VIS) lasers. Moreover the long wavelength allows working with such interferometers outside the laboratory. A mobile system has been developed on the basis of previous laboratory developments. Then it is validated in a variety of industrial nondestructive testing applications in field working conditions.
© 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)
Jean-François Vandenrijt, Cédric Thizy, Igor Alexeenko, Giancarlo Pedrini, Jonathan Rochet, Birgit Vollheim, Iagoba Jorge, Pablo Venegas, Ion López, Wolfgang Osten, Marc P. Georges, "Mobile speckle interferometer in the long-wave infrared for aeronautical nondestructive testing in field conditions," Optical Engineering 52(10), 101903 (11 April 2013). http://dx.doi.org/10.1117/1.OE.52.10.101903
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KEYWORDS
Long wavelength infrared

Cameras

Gas lasers

Interferometers

Optical fibers

Speckle

Infrared radiation

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