Stroboscopic shearography for vibration analysis

Wolfgang Steinchen; Gerhard Kupfer; Peter Maeckel; Frank Voessing

doi:10.1117/12.360969

9 September 1999 Stroboscopic shearography for vibration analysis

Wolfgang Steinchen, Gerhard Kupfer, Peter Maeckel, Frank Voessing

Proceedings Volume 3823, Laser Metrology and Inspection; (1999) https://doi.org/10.1117/12.360969
Event: Industrial Lasers and Inspection (EUROPTO Series), 1999, Munich, Germany

Abstract

Digital Shearography, a laser interferometric technique in conjunction with the digital image processing, has the potential for vibration analysis due to its simple optical system and insensitivity against small rigid body motions. This paper will focus on its recent developments for vibration analysis and for nondestructive testing (NDT) by dynamic (harmonical) excitation. With the introduction of real time observation using automatically refreshing reference frame, both small and large rigid body motions are greatly suppressed. The development of a smaller and more mobile measuring device in conjunction with a user guided comfortable program Shearwin enables the digital shearography to be applied easily as an industrial online testing tool.

Citation Download Citation

Wolfgang Steinchen, Gerhard Kupfer, Peter Maeckel, and Frank Voessing "Stroboscopic shearography for vibration analysis", Proc. SPIE 3823, Laser Metrology and Inspection, (9 September 1999); https://doi.org/10.1117/12.360969

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