From Event: SPIE Optical Engineering + Applications, 2018
Time averaging technique applied to different interferometric methods is one of the most commonly used measurement technique in vibration testing. The information on amplitude of vibration is encoded in so called fringe envelope function described by the J0 Bessel function in case of harmonic motion. In the presented paper the author proposes novel solution for amplitude distribution evaluation. It is based on the analysis of the Bessel pattern modulation distribution. For modulation evaluation Temporal Phase Shifting method was used. Conducted numerical error analysis prove usefulness of the proposed approach.
Adam Styk, "Vibration amplitude determination through besselogram modulation analysis," Proc. SPIE 10749, Interferometry XIX, 107490B (Presented at SPIE Optical Engineering + Applications: August 21, 2018; Published: 18 August 2018); https://doi.org/10.1117/12.2321596.
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