Pixel-wise amplitude distribution evaluation in time average digital holography

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F18%3A00499520" target="_blank" >RIV/61389021:_____/18:00499520 - isvavai.cz</a>

Result on the web

<a href="http://iopscience.iop.org/article/10.1088/1742-6596/1149/1/012033/pdf" target="_blank" >http://iopscience.iop.org/article/10.1088/1742-6596/1149/1/012033/pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/1149/1/012033" target="_blank" >10.1088/1742-6596/1149/1/012033</a>

Result language

angličtina

Original language name

Pixel-wise amplitude distribution evaluation in time average digital holography

Original language description

This article introduces a new holographic method for harmonic vibration measurement. The method called time average sweeping digital holography (TASDH) is based on the continuous shift of fringe pattern described by Bessel function over the object surface. The shift is done by phase modulation in one arm of holographic interferometer. Such temporal phase sweeping allows for evaluation of the vibration amplitude value independently in each pixel by application of intensity values cross-correlation of steady state and oscillating object. Main advantage of proposed technique with respect to other methods of digital holographic vibration is its ability to measure the amplitude of vibration without the risk of interference order mismatch. Thanks to above mentioned properties, the method allows measurement of amplitude modes with high slopes or discontinuous surfaces as well as partially shaded objects. The method was experimentally tested by measuring the bending beam cantilever. The standard deviation of the measured noise is below nanometer.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20201 - Electrical and electronic engineering

Project

<a href="/en/project/GA16-11965S" target="_blank" >GA16-11965S: Adaptive acoustic metasurfaces for the active sound field control</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Journal of Physics: Conference Series

ISBN

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ISSN

1742-6596

e-ISSN

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Number of pages

6

Pages from-to

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Publisher name

IOP Publishing

Place of publication

Bristol

Event location

Ancona

Event date

Jun 19, 2018

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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