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Published in 2018 at "Acta Astronautica"
DOI: 10.1016/j.actaastro.2017.12.011
Abstract: Abstract The study on bulk waves in nanoplates has been done for several times in recent years, but guided waves have not been investigated yet. This paper is focused on the size-dependent guided wave propagation…
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Keywords:
porous functionally;
functionally graded;
wave propagation;
fully clamped ... See more keywords
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Published in 2018 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2018.04.041
Abstract: Abstract The guided wave technique has been widely used for evaluating different structures. Recently, these acoustic waves have been implemented in non-destructive testing (NDT). Accordingly, these waves make up a set of motivated means for…
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Keywords:
composite media;
polynomial approach;
anisotropic fiber;
legendre polynomial ... See more keywords
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Published in 2018 at "Composite Structures"
DOI: 10.1016/j.compstruct.2018.08.024
Abstract: Abstract This article demonstrates a rapid, fully non-contact inspection technique for a full-scale complex composite structural component using air-coupled ultrasonic guided waves. The presence of different features such as stiffeners, stringers and geometric variations in…
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Keywords:
air coupled;
composite structural;
guided wave;
inspection ... See more keywords
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Published in 2019 at "Composite Structures"
DOI: 10.1016/j.compstruct.2019.111161
Abstract: Abstract In is work, the delamination of composite double cantilever beams (DCBs) was detected and monitored using ultrasonic guided wave. The composite DCBs were prepared, and the experimental platform for damage detection based on ultrasonic…
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Keywords:
delamination composite;
guided wave;
delamination;
harmonics ... See more keywords
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Published in 2020 at "Composite Structures"
DOI: 10.1016/j.compstruct.2020.112376
Abstract: Abstract A guided wave simulation method for layered composites based on the wave and finite element scheme is presented. An approach for calculating complex displacement fields such as those generated from piezoelectric transducers is developed.…
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Keywords:
element scheme;
finite element;
guided wave;
wave simulation ... See more keywords
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Published in 2020 at "Journal of Sound and Vibration"
DOI: 10.1016/j.jsv.2020.115287
Abstract: Abstract This paper presents solutions and comparisons for guided wave motion (Lamb and shear horizontal) due to tensile and shear cracks in an isotropic plate using elastodynamic reciprocity. Cracks are treated as point sources, which…
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Keywords:
motion;
wave motion;
excitability;
guided wave ... See more keywords
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Published in 2020 at "Journal of Sound and Vibration"
DOI: 10.1016/j.jsv.2020.115541
Abstract: Abstract Pipes have multiple applications in daily life and they are subjected to different types of defects. Nonlinear guided wave has attracted significant attention in detecting microstructural change at early stage of material deterioration. Extensive…
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Keywords:
wave mixing;
guided wave;
detection;
material nonlinearity ... See more keywords
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Published in 2020 at "Optics and Laser Technology"
DOI: 10.1016/j.optlastec.2019.105923
Abstract: Abstract To inspect the integrity of specimens that are moving or no space available to mount sensors on their surfaces, laser generated guided wave (GW) becomes the only feasible option. However, conventional GW generated by…
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Keywords:
narrowband;
integrated sagnac;
optics;
sagnac interferometer ... See more keywords
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Published in 2019 at "Ultrasonics"
DOI: 10.1016/j.ultras.2018.12.015
Abstract: Guided wave based monitoring systems require accurate knowledge of mode propagation characteristics such as wavenumber and group velocity dispersion curves. These characteristics may be computed numerically for a rail provided that the material and geometric…
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Keywords:
semi analytical;
rail;
rail properties;
guided wave ... See more keywords
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Published in 2017 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2016.07.013
Abstract: Abstract A guided wave damage identification method using a model-based approach is proposed to identify multiple cracks in beam-like structures. The guided wave propagation is simulated using spectral finite element method and a crack element…
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Keywords:
multiple cracks;
method;
approach;
identification ... See more keywords
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Published in 2019 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2019.05.022
Abstract: Abstract Simultaneous presence of multiple fatigue cracks in the same structural element is a critical problem affecting system safety. However, initiation and growth of these cracks is affected by various uncertainties from sources like material…
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Keywords:
prognosis;
regularized particle;
particle filter;
guided wave ... See more keywords