Showing 841 - 860 results of 5,940 for search '"digital image"', query time: 0.20s Refine Results
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    Identification of Orthotropic Elastic Properties of Wood by a Synthetic Image Approach Based on Digital Image Correlation by João Henriques, José Xavier, António Andrade-Campos

    Published 2022-01-01
    “…This work aims to determine the orthotropic linear elastic constitutive parameters of <i>Pinus pinaster</i> Ait. wood from a single uniaxial compressive experimental test, under quasi-static loading conditions, based on two different specimen configurations: (a) on-axis rectangular specimens oriented on the radial-tangential plane, (b) off-axis specimens with a grain angle of about 60° (radial-tangential plane). Using digital image correlation (DIC), full-field displacement and strain maps are obtained and used to identify the four orthotropic elastic parameters using the finite element model updating (FEMU) technique. …”
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    Energy evolution and crack development characteristics of sandstone under freeze-thaw cycles by digital image correlation by Junzu Ma, Jiaxu Jin, Jiaju Feng, Zhifa Qin

    Published 2023-01-01
    “…In this study, the stress threshold, energy, and strain field evolution of sandstone and the variation in stress intensity factor of fractures in various stress fields were all investigated after freeze-thaw cycles by uniaxial compression tests and digital image correlation technology. The results show that the elastic modulus, crack initiation stress, and peak stress all fell by 97%, 92.5%, and 89.9%, respectively, as the number of freeze-thaw cycles approaches 80. …”
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    UniPolar impulse noise removing from digital images based on estimation of noises spatial distribution by asghar Zarea, Ali Mohammadzadeh

    Published 2015-01-01
    “…This article introduces a method to detect and remove unipolar impulse noises from digital images. In this study, proposed method is a repetitive procedure which each repeat contain three steps. …”
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    Energy evolution and crack development characteristics of sandstone under freeze-thaw cycles by digital image correlation. by Junzu Ma, Jiaxu Jin, Jiaju Feng, Zhifa Qin

    Published 2023-01-01
    “…In this study, the stress threshold, energy, and strain field evolution of sandstone and the variation in stress intensity factor of fractures in various stress fields were all investigated after freeze-thaw cycles by uniaxial compression tests and digital image correlation technology. The results show that the elastic modulus, crack initiation stress, and peak stress all fell by 97%, 92.5%, and 89.9%, respectively, as the number of freeze-thaw cycles approaches 80. …”
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