Time reversal as a computational tool in acoustics and elastodynamics

D Givoli - Journal of Computational Acoustics, 2014 - World Scientific
In this review paper, the use of the Time Reversal (TR) method as a computational tool for
solving some classes of inverse problems is surveyed. The basics of computational TR are …

Lamb wave-based subwavelength damage imaging using the DORT-MUSIC technique in metallic plates

J He, FG Yuan - Structural Health Monitoring, 2016 - journals.sagepub.com
A Lamb wave-based, subwavelength imaging algorithm is developed for damage imaging in
a metallic plate based on a decomposition of the time-reversal operator method together …

Baseline-free estimation of residual fatigue life using a third order acoustic nonlinear parameter

M Amura, M Meo, F Amerini - The Journal of the Acoustical Society of …, 2011 - pubs.aip.org
Prediction of crack growth and fatigue life estimation of metals using linear/nonlinear
acousto-ultrasound methods is an ongoing issue. It is known that by measuring nonlinear …

Closed crack imaging using time reversal method based on fundamental and second harmonic scattering

P Blanloeuil, LRF Rose, JA Guinto, M Veidt, CH Wang - Wave Motion, 2016 - Elsevier
A recent variant of time reversal imaging is employed for reconstructing images of a closed
crack, based on both the fundamental and the second harmonic components of the …

Nonlinear elastic imaging using reciprocal time reversal and third order symmetry analysis

F Ciampa, M Meo - The Journal of the Acoustical Society of America, 2012 - pubs.aip.org
This paper presents a nonlinear imaging method for the detection of the nonlinear signature
due to impact damage in complex anisotropic solids with diffuse field conditions. The …

Acoustic emission localization in complex dissipative anisotropic structures using a one-channel reciprocal time reversal method

F Ciampa, M Meo - The Journal of the Acoustical Society of America, 2011 - pubs.aip.org
This paper presents an imaging method for the localization of the impact point in complex
anisotropic structures with diffuse field conditions, using only one passive transducer. The …

Nonlinear Lamb wave based DORT method for detection of fatigue cracks

J Zhou, L Xiao, W Qu, Y Lu - Ndt & E International, 2017 - Elsevier
This research reports a selective detecting and focusing approach for fatigue cracks through
use of decomposition of the time reversal operator (DORT) in combination with nonlinear …

A comparison and extensions of algorithms for quantitative imaging of laminar damage in plates. I. Point spread functions and near field imaging

LRF Rose, E Chan, CH Wang - Wave Motion, 2015 - Elsevier
Real-time structural health monitoring (SHM) and safety prognostics require quantitative and
continuously updated information on damage size and severity. A unified theoretical solution …

Phase symmetry analysis for nonlinear ultrasonic modulated signals

GP Malfense Fierro, F Ciampa… - Structural control and …, 2020 - Wiley Online Library
Nonlinear ultrasonic experiments typically require digital pass‐band filters and advanced
signal processing tools to highlight low‐amplitude nonlinear elastic effects such as …

Detection and modelling of nonlinear elastic response in damaged composite structures

F Ciampa, E Onder, E Barbieri, M Meo - Journal of Nondestructive …, 2014 - Springer
In this paper the nonlinear material response of damaged composite structures under
periodic excitation is experimentally and numerically investigated. In particular, the …