Results 21 to 30 of about 7,193 (177)
The effect of loading methods and parameters on defect detection in digital shearography
Results in Physics, 2017 Digital Shearography Speckle Pattern Interferometry (DSSPI) is a non-destructive testing technique, which has a wide range of applications in industrial field due to the merits of non-contact, fast response, full-field measurement and high sensitivity ...
Fu Yang +7 more
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Application of the DIC Technique to Remote Control of the Hydraulic Load System
Remote Sensing, 2020 Displacements or deformations of materials or structures are measured with linear variable differential transducers (LVDT), fibre optic sensors, laser sensors, and confocal sensor systems, while strains are measured with electro-resistant tensometers or ...
Radosław Jasiński +2 more
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Journal of Imaging, 2019 This paper presents first laboratory results of a combined approach carried out by the use of three different portable non-invasive electromagnetic methods: Digital holographic speckle pattern interferometry (DHSPI), stimulated infrared thermography ...
Antonina Chaban +5 more
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Journal of Imaging, 2019 Relative humidity (RH) changes are a natural environmental effect that forces organic materials to a constant cycle of achieving equilibrium. The present work is part of an ongoing research based on the hypothesis that the inevitable deleterious effects ...
Vivi Tornari +3 more
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Optical Engineering: The Journal of SPIE, 2019 . Wavelets shrinkage is the most illustrative of wavelets transform for speckle noise reduction. We aim to study the performance of a monogenic wavelet transform to reduce the speckle noise in digital speckle pattern interferometric fringes. The proposed
Sara Zada +4 more
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Squeezing Interferometry for Optical Phase Extraction in Digital Speckle Pattern Interferometry
International Journal of Optics and Applications, 2012 The purpose of the present work is the use of squeezing interferometry Technique to provide an optical phase mapping from DSPI fringes. The main advantage of this technique is to demodulate by means of a quadrature Gabor filter, a single carrier-frequency fringe pattern formed from intermixing M shifted fringe patterns that are synthetised numerically ...
Vamara Dembele +3 more
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Research and Review Journal of Nondestructive TestingReliable inspection of micro-scale components is essential in fields such as electronics and medical device manufacturing. To address this, a method combining digital speckle holography with microscopy has been developed.
Jessica Plassmann +5 more
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A Vision-Based Bolt Looseness Detection Method for a Multi-Bolt Connection
Applied SciencesMany vision-based bolt looseness detection methods that directly observe the bolts have been developed. However, these methods have many limitations in terms of the conditions and processes of their implementation.
Lin Deng +5 more
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Denoising of Wrapped Phase in Digital Speckle Shearography Based on Convolutional Neural Network
Applied SciencesSpeckle-shearing technology is widely used in defect detection due to its high precision and non-contact characteristics. However, the wrapped-phase recording defect information is often accompanied by a lot of speckle noise, which affects the evaluation
Hao Zhang, Dawei Huang, Kaifu Wang
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Frontiers in PhysicsIn this study, composites obtained through low-temperature carbonization of elastomeric matrix highly filled with graphite, carbon black and short carbon fibers were studied for the purpose of determining residual stresses at different scales using a ...
Eugene S. Statnik +5 more
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