Estudo quantitativo de tensões em amostras fotoelásticas por meio de Holografia Digital

Silva, Sidney Leal da

doi:10.11606/t.43.2016.tde-22102016-154751

Cited by 1 publication

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“…The wieldy use of HD throughout the years has resulted in great advances in both techniques and methods inside the scientific and technological universes, as * Correspondence email address: felipemp369@gmail.com shown by the works of Wang (2018), Narayanamurthy (2017), Da Silva (2017), e Zhang (2012) [8][9][10][11]. Currently, digital holography is a fast and efficient tool that can be very useful for the analysis of mechanical effects on materials [12].…”

Section: Introductionmentioning

confidence: 99%

Computational algorithm from the Huygens-Fresnel’s diffraction integral for two-dimensional holographic reconstruction

Prado

Utiyama

Toffoli

et al. 2022

Rev. Bras. Ensino Fís.

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While most common holographic methods of digital reconstruction are based on the convolution theory, for the ease in the mathematical approach, here we present an algorithm by a discretization of the Huygens-Fresnel integral from a Taylor series expansion to produce a bidimensional Fourier transform. Compared to the digital convolution method, the algorithm presented here is more concise and generates a reduction in processing time, since the Fourier transform appears only once in the discretization. Another advantage is associated with the production of results in the frequency domain, allowing the optical information to be obtained directly.

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Section: Introductionmentioning

confidence: 99%