Journal ArticleDOI
Experimental evaluation of delaminations in composite plates by the use of Lamb waves
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TLDR
The S 0 mode of Lamb waves can be used in testing for delaminations in plate material as mentioned in this paper, which is useful when sizing for defects close to the surface, particularly when the depth of the defect or the back-wall echoes lie within the length of the transmitted ultrasonic pulse.About:
This article is published in Composites Science and Technology.The article was published on 1995-01-01. It has received 100 citations till now. The article focuses on the topics: Delamination & Lamb waves.read more
Citations
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Journal ArticleDOI
Guided Lamb waves for identification of damage in composite structures: A review
Zhongqing Su,Lin Ye,Ye Lu +2 more
TL;DR: A comprehensive review on the state of the art of Lamb wave-based damage identification approaches for composite structures, addressing the advances and achievements in these techniques in the past decades, is provided in this paper.
Journal ArticleDOI
Structural health monitoring techniques for aircraft composite structures
K. Diamanti,Constantinos Soutis +1 more
TL;DR: A review of currently used inspection methods is presented and some examples are described where Lamb wave based scanning techniques have been used to identify internal damage in multi-layered composite structures in this article.
Journal ArticleDOI
Wavelet-based active sensing for delamination detection in composite structures
TL;DR: In this article, a wavelet-based signal processing technique is developed and combined with an active sensing system to produce a near-real-time, online monitoring system for composite structures, where a layer of piezoelectric patches is used to generate an input signal with a specific wavelet waveform and to measure response signals.
Journal ArticleDOI
Detecting Damage in Composite Material Using Nonlinear Elastic Wave Spectroscopy Methods
TL;DR: In this article, two different nonlinear elastic wave spectroscopy (NEWS) methods are presented: single mode nonlinear resonance ultrasound (NRUS) and nonlinear wave modulation technique (NWMS).
Journal ArticleDOI
Understanding a time reversal process in Lamb wave propagation
TL;DR: In this article, the authors investigated the time reversal process (TRP) of Lamb wave signals which are transmitted and received by piezoelectric transducers bonded on plate-like structures.
References
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Journal ArticleDOI
On waves in an elastic plate
TL;DR: In this article, the authors considered the problem of two-dimensional wave propagation in a solid bounded by parallel planes, and proposed a simple solution to the problem, which has no bearing on the questions referred to in this paper.
Journal ArticleDOI
The interaction of Lamb waves with defects
D. N. Alleyne,Peter Cawley +1 more
TL;DR: The results indicate that Lamb waves may be used to find notches when the wavelength to notch depth ratio is on the order of 40, and the 2-D Fourier transform method is used to quantify Lamb wave interactions with defects.
Journal ArticleDOI
A two-dimensional Fourier transform method for the measurement of propagating multimode signals
D. N. Alleyne,Peter Cawley +1 more
TL;DR: In this article, a two-dimensional Fourier transform (2D FFT) was used to measure the amplitudes and velocities of the Lamb waves propagating in a plate, the output of the transform being presented using an isometric projection which gives a three-dimensional view of the wave-number dispersion curves.
Journal ArticleDOI
Optimization of Lamb wave inspection techniques
D. N. Alleyne,Peter Cawley +1 more
TL;DR: In this article, the authors discuss the selection of the appropriate mode and frequency range for different inspection requirements and review the possible methods of excitation, response measurement and signal processing, and show that the presence of defects can be detected reliably from changes in the shape of the received waveform.
Journal ArticleDOI
The interaction of Lamb waves with delaminations in composite laminates
Ningqun Guo,Peter Cawley +1 more
TL;DR: In this paper, the S0 Lamb mode can propagate over distances of the order of 1 m in composite laminates and so has the potential to be used in long-range nondestructive inspection.