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Ji Qian, Peiyun Zhang, Yongqiang Wu, Ruixin Jia and Jipeng Yang
The corrosion of reinforced concrete (RC) is one of the most serious durability problems in civil engineering structures, and the corrosion detection of internal reinforcements is an important basis for structural durability assessment. In this paper, th...
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Liv Rittmeier, Natalie Rauter, Andrey Mikhaylenko, Rolf Lammering and Michael Sinapius
Lamb waves occur in thin-walled structures in two wave modes?the symmetric and the antisymmetric mode. Their oscillation on the structures? surfaces is either in phase (symmetric) or shifted by a phase angle of ??
p
(antisymmetric). In this work, a meth...
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Tianyi Feng and M. H. Ferri Aliabadi
This paper describes a study that focuses on assessing the influence of composites with different thicknesses (2 mm, 4 mm, and 9 mm) on embedded ultrasonic guided waves (UGWs) under varying temperatures. The study also demonstrates the effectiveness of t...
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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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Rong Bao, Xin Peng, Yin Yang, Neng Xiong, Yang Tao, Jifei Wu and Dawei Liu
Lossy dielectric bars have potential applications in high power microwave (HPM) radiation-effect experiments performed in wind tunnels. Under plane excitation, beat wave patterns are observed along lossy and lossless dielectric bars in 3-D electromagneti...
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Mikhail V. Golub, Ilya A. Moroz, Yanzheng Wang, Artur D. Khanazaryan, Kirill K. Kanishchev, Evgenia A. Okoneshnikova, Alisa N. Shpak, Semyon A. Mareev and Chuanzeng Zhang
A novel kind of acoustic metamaterials (AMMs) with unit cells composed of two layers made of dissimilar materials with a crack-like void situated at the interface between bars is considered. Recently, the authors showed numerically that this novel kind o...
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Michaël Lematre and Marc Lethiecq
This paper presents the possibility of enhancement of the generation and detection of poorly energetic acoustic-guided waves in multilayered structures using a new design for a V(z) transducer. By defining a modified V(z) transducer composed of segmented...
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Andrey Mikhaylenko, Natalie Rauter, Nanda Kishore Bellam Muralidhar, Tilmann Barth, Dirk A. Lorenz and Rolf Lammering
Guided ultrasonic waves are suitable for use in the context of structural health monitoring of thin-walled, plate-like structures. Hence, observing the wave propagation in the plates can provide an indication of whether damage has occurred in the structu...
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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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Gaetano Assanto, Timothy R. Marchant and Noel F. Smyth
The interaction of optical solitary waves in nematic liquid crystals, nematicons and vortices, with other nematicons and localised structures, such as refractive index changes, is reviewed. Such interactions are shown to enable simple routing schemes as ...
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