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Rayleigh and Lamb Waves
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The article was published on 1967-01-01. It has received 1877 citations till now. The article focuses on the topics: Rayleigh wave & Lamb waves.read more
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Journal ArticleDOI
Air-coupled guided waves combined with thermography for monitoring fatigue in biaxially loaded composite tubes
TL;DR: In this article, a non-destructive methodologies for remote monitoring of fatigue induced by mechanical load in fiber reinforced plastics are presented, where hollow cylinders (glass fibre winding) were stepwise biaxially fatigued and measured in single-sided access configurations.
Journal ArticleDOI
Mechanism for the interaction of surface waves with 200‐Å nickel films
TL;DR: In this article, surface wave attenuation of surface wave delay lines coated with nickel films in a magnetic field parallel to the film plane in the frequency range 500-665 MHz was measured. But the effect is very strong for 200-A thick nickel film-coated 618MHz quartz delay lines at room temperature.
Journal ArticleDOI
Multiaxial fatigue behaviour of GFRP with evenly distributed or accumulated voids monitored by various NDT methodologies
TL;DR: In this article, the effect of evenly distributed voids and regions of large accumulated voids on damage evolution and fatigue life during biaxial cyclic loading is studied, and the detrimental effect of the two types of porosity on the durability of multiaxially loaded composites is illustrated.
Journal ArticleDOI
A high frequency GaN Lamb-wave sensor device
TL;DR: In this paper, a Lamb-wave delay line device based on a single crystalline GaN membrane is presented, and the observed operating frequency of 178.82 MHz was found to be in excellent agreement with numerical analysis predictions.
Proceedings ArticleDOI
Wavelet transform signal processing for dispersion analysis of ultrasonic signals
TL;DR: In this paper, a wavelet transform is used to obtain the time evolution of the various spectral components of the ultrasonic signal, and the magnitude of the wavelet transforms are used to represent the envelope of ultrasonic pulse and to determine the time of arrival of the acoustic energy.