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Nondestructive testing by using long-wave infrared interferometric techniques with CO2 lasers and microbolometer
Igor Alexeenko1, Jean-François Vandenrijt, Giancarlo Pedrini
1Institut für Technische Optik—Universität Stuttgart, Pfaffenwaldring 9, Stuttgart 70569, Germany.
Abstract:
We describe three different interferometric techniques (electronic speckle pattern interferometry, digital holographic interferometry, and digital shearography), using a long-wave infrared radiation produced by a CO(2) laser and recorded on a microbolometer array. Experimental results showing how these methods can be used for nondestructive testing are presented. Advantages and disadvantages of these approaches are discussed.
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