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Kevin J. Parker
In the approaches to elastography, two mathematical operations have been frequently applied to improve the final estimate of shear wave speed and shear modulus of tissues. The vector curl operator can separate out the transverse component of a complicate...
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Kanji Ono
This work determined the attenuation coefficients of Lamb waves of ten engineering materials and compared the results with calculated Lamb-wave attenuation coefficients, a?S and a?A. The Disperse program and a parametric method based on Disperse results ...
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María Higuera, José M. Perales, María-Luisa Rapún and José M. Vega
A review of available results on non-destructive testing of physical systems, using the concept of topological sensitivity, is presented. This mathematical tool estimates the sensitivity of a set of measurements in some given sensors, distributed along t...
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Rymantas Jonas Kazys, Liudas Mazeika and Justina Sestoke
Air-coupled ultrasonic guided A0 mode is already used for material characterization. By measuring the phase velocity of the A0 mode the elastic properties, such as the Young?s modulus, can be determined. The objective of this work was the development of ...
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Marilyne Philibert, Constantinos Soutis, Matthieu Gresil and Kui Yao
Low velocity impact induces barely visible damage in the form of matrix cracking or delamination that can grow under hydro-thermo-mechanical loading and possibly lead to catastrophic failure if not detected at an early stage. A network of piezoelectric t...
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