Deformation reconstruction by means of surface optimization. Part II: time-resolved electronic speckle pattern interferometry.
Appl Opt
; 57(13): 3444-3452, 2018 May 01.
Article
en En
| MEDLINE
| ID: mdl-29726529
ABSTRACT
An analysis of time-resolved electronic speckle pattern interferograms using an optimization algorithm is shown to provide full-field measurements of transient surface deformation. The arrangement uses a continuous-wave laser and high-speed camera to capture speckle images, with the recovery of the time-resolved deformation achieved by spatiotemporal processing using an optimization algorithm. It is shown that the process allows imaging of high-speed non-monotonic out-of-plane displacements with sub-micrometer amplitude. Time-resolved amplitude and phase recovery is demonstrated by analyzing the out-of-plane deformation of harmonic and transient events in a friction membranophone.
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Colección:
01-internacional
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MEDLINE
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En
Revista:
Appl Opt
Año:
2018
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Article