Journal ArticleDOI
Acoustic emission localization in beams based on time reversed dispersion.
Robert Ernst,Jürg Dual +1 more
TLDR
It will be shown, that acoustic emissions are successfully localized even on anisotropic structures and in the case of geometrical complexities such as notches, which lead to reflections, and cross sectional changes, which affect the wave speed.About:
This article is published in Ultrasonics.The article was published on 2014-08-01. It has received 26 citations till now. The article focuses on the topics: Acoustic emission & Acoustic wave equation.read more
Citations
More filters
Journal ArticleDOI
Damage localization method for plates based on the time reversal of the mode-converted Lamb waves
TL;DR: The proposed method reduces the magnitude of the artifacts compared to the time reversal of the non‐mode‐converted Lamb wave, and yields the focused spot whose size is associated with the size of the notch and the half wavelength of the time‐reversed wave mode.
Journal ArticleDOI
Time reverse modeling of acoustic emissions in a reinforced concrete beam.
TL;DR: The experimental and numerical results presented for selected AE signals confirm that TRM is capable of localizing AE activity in RC caused by concrete cracking and is corroborated by three-dimensional crack distributions obtained from X-ray computed tomography images.
Journal ArticleDOI
Structural damage localisation by acoustic emission technique: A state of the art review
TL;DR: In this paper, the authors present a review of the existing literature on ACOUSTIC EMISSION (AE) under a few broad categories and discuss CHRONOLOGICAL ADVANCEMENTS in each category.
Journal ArticleDOI
Acoustic emission Bayesian source location: Onset time challenge
TL;DR: An inverse source location problem in a concrete block is considered to address the mentioned issue and an innovative approach to select the most probable onset time obtained from two automatic picker methods is proposed.
Journal ArticleDOI
One sensor acoustic emission localization in plates.
TL;DR: A new approach which requires only a single sensor to identify and localize the source of acoustic emissions in a finite plate by making use of the time reversal principle and the dispersive nature of the flexural wave mode in a suitable frequency band is presented.
References
More filters
Journal ArticleDOI
Theory of communication. Part 1: The analysis of information
TL;DR: New methods of analysis, which involve some of the mathematical apparatus of quantum theory, are illustrated by application to some problems of transmission theory, such as direct generation of single sidebands, signals transmitted in minimum time through limited frequency channels, frequency modulation and time-division multiplex telephony.
Book ChapterDOI
Wave Propagation in Structures
TL;DR: The present chapter is the culmination of the procedures developed thus far: It allows the analysis of complicated connected structures and develops a matrix methodology.
Journal ArticleDOI
Time-reversed acoustics
Mathias Fink,Didier Cassereau,Arnaud Derode,Claire Prada,Philippe Roux,Mickael Tanter,Jean-Louis Thomas,F. Wu +7 more
TL;DR: In this paper, the authors show that time reversal invariance can be exploited in acoustics to create a variety of useful instruments as well as elegant experiments in pure physics, and they describe time reversal cavities and mirrors together with a comparison between time reversal and phase conjugation.
Proceedings ArticleDOI
Time reversed acoustics
TL;DR: In this paper, the authors show that time reversal invariance can be exploited in acoustics to accurately control wave propagation through complex media and create a variety of useful instruments, such as waveguides and reverberant cavities.
Related Papers (5)
Acoustic emission localization in complex dissipative anisotropic structures using a one-channel reciprocal time reversal method
Francesco Ciampa,Michele Meo +1 more