Journal ArticleDOI
Lamb wave frequency–wavenumber analysis and decomposition
Zhenhua Tian,Lingyu Yu +1 more
TLDR
In this paper, the authors used Lamb wave detection for detection of thin-walled structures due to their long propagation capability and sensitivity to a variety of different types of damage types.Abstract:
Lamb waves have shown great potentials in damage detection of thin-walled structures due to their long propagation capability and sensitivity to a variety of damage types. However, their practical ...read more
Citations
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Journal ArticleDOI
Crack imaging and quantification in aluminum plates with guided wave wavenumber analysis methods.
TL;DR: Guided wavefield analysis methods for detection and quantification of crack damage in an aluminum plate are presented and simulation based studies show that spatial wavenumber imaging method is able to distinguish cracks of different severities.
Journal ArticleDOI
Guided wave phased array beamforming and imaging in composite plates.
Lingyu Yu,Zhenhua Tian +1 more
TL;DR: The results show that the guided wave phased array method is a potential effective method for rapid inspection of large composite structures and provides intrinsic explanations for phased array beamforming.
Journal ArticleDOI
Damage identification for composite structures using a cross-correlation reverse-time migration technique:
TL;DR: In this article, a reverse-time migration technique to image damage by cross-correlating forward and backward propagating wavefields in composite structures using flexural wave signals is presented.
Journal ArticleDOI
A multi-delay-and-sum imaging algorithm for damage detection using piezoceramic transducers
Guangtao Lu,Guangtao Lu,Yourong Li,Tao Wang,Xiao Han,Linsheng Huo,Gangbing Song,Gangbing Song +7 more
TL;DR: In this paper, a multi-delay-and-sum imaging algorithm was proposed to obtain a damage image by drawing ellipses at each transducer, which is different from the traditional delay and sum imaging algorithm.
Journal ArticleDOI
Guided wave imaging for detection and evaluation of impact-induced delamination in composites
TL;DR: In this article, the frequency-wavenumber representations of the guided wavefields were used to calculate the wavenumber values at each spatial location and highlight the delamination damage as regions with larger values.
References
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Book
Ultrasonic Waves in Solid Media
TL;DR: In this article, the theory of elasticity was introduced and basic formulas and concepts in complex variables in the theory and application of wave propagation were discussed. But the authors did not consider the effects of wave scattering on the wave propagation experiments.
Book
Array Signal Processing: Concepts and Techniques
Don H. Johnson,Dan E. Dudgeon +1 more
TL;DR: This chapter discusses how signals in Space and Time and apertures and Arrays affect Array Processing and the role that symbols play in this processing.
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.
Book
Structural Health Monitoring: with Piezoelectric Wafer Active Sensors
TL;DR: Structural Health Monitoring with Piezoelectric Wafer active sensors (PWAS) as mentioned in this paper is the first comprehensive textbook to provide background information, theoretical modeling, and experimental examples on the principal technologies involved in SHM.