Journal
OPTICAL ENGINEERING
Volume 55, Issue 12, Pages -Publisher
SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
DOI: 10.1117/1.OE.55.12.121717
Keywords
holography; digital holography; phase measurement; noise in imaging systems; interferometric imaging; image; reconstruction technique; vibration analysis; acoustic black hole
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Funding
- IRT Jules Verne
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This paper describes the basics of high-speed holographic metrology, its limitations, and its application to the investigation of traveling acoustic waves propagating in mechanical structures. Limits are related to a few parameters that must be carefully adjusted for the recording. A full numerical simulation of the recordingreconstruction holographic process is presented and used to investigate the decorrelation phase noise induced by spatial resolution, active surface of pixels, and short exposure time. Applications to vibroacoustics of structures consider the case of waves propagating after a shock by impact hammer and wave interaction in one-dimensional and two-dimensional acoustic black hole extremities. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
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