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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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Zhanming Liu, Hong Yang, Xinghu Wei and Zhaoxiong Liang
Extreme precipitation events have caused serious impacts on natural ecosystem and human society and have attracted increasing attention in recent years. IPCC AR6 WG I report highlighted a lack of conclusive consensus on the change trend of extreme precip...
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Ali K. Saleh, Zafer Sakka and Hasan Almuhanna
The early condition-based assessment of civil infrastructures plays an essential role in extending their service life, preventing undesirable sudden failures, and reducing maintenance and rehabilitation costs. One of the most commonly used and fastest no...
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Hailong Zhao, Shu Gan, Xiping Yuan, Lin Hu, Junjie Wang and Shuai Liu
Iron oxide is the main form of iron present in soils, and its accumulation and migration activities reflect the leaching process and the degree of weathering development of the soil. Therefore, it is important to have information on the iron oxide conten...
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Baigang Huang, Jianjun Jiang and Zaojian Zou
A method based on a coarse- and fine-tuning fixed-grid wavelet networks is presented for online prediction of the coupled heave-pitch motions of a ship in irregular waves. The online modeling method contains two processes, i.e., coarse tuning and fine tu...
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M. Saqib Hameed, Zheng Li and Kaihong Zheng
A damage estimation method based on continuous wavelet transformation (CWT) of the normalized Lamb wave signals is proposed here. Lamb waves are actuated and sensed using piezoelectric (lead zirconate titanate, PZT) transducers arranged in the form of sq...
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Wei-tao Du, Qiang Zeng, Yi-min Shao, Li-ming Wang and Xiao-xi Ding
Demodulation is one of the most useful techniques for the fault diagnosis of rotating machinery. The commonly used demodulation methods try to select one sensitive sub-band signal that contains the most fault-related components for further analysis. Howe...
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