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Proceedings Paper

Stroboscopic shearography for vibration analysis
Author(s): Wolfgang Steinchen; Gerhard Kupfer; Peter Maeckel; Frank Voessing
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Paper 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.

Paper Details

Date Published: 9 September 1999
PDF: 11 pages
Proc. SPIE 3823, Laser Metrology and Inspection, (9 September 1999); doi: 10.1117/12.360969
Show Author Affiliations
Wolfgang Steinchen, Univ. Gesamthochschule Kassel (Germany)
Gerhard Kupfer, Univ. Gesamthochschule Kassel (Germany)
Peter Maeckel, Univ. Gesamthochschule Kassel (Germany)
Frank Voessing, Univ. Gesamthochschule Kassel (Germany)


Published in SPIE Proceedings Vol. 3823:
Laser Metrology and Inspection
Hans J. Tiziani; Pramod Kumar Rastogi, Editor(s)

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