Journal ArticleDOI
Nonlinear self-modulation and subharmonic acoustic spectroscopy for damage detection and location
TLDR
In this article, a self-modulation mode of nonlinear acoustic vibrations of cracked defects has been analyzed and observed experimentally and attributed to the sum-frequency type resonance in a multi-degree of freedom system and include a subharmonic spectrum as a particular case.Abstract:
A self-modulation mode of nonlinear acoustic vibrations of cracked defects has been analyzed and observed experimentally. Spectral patterns of the self-modulation are attributed to the sum-frequency type resonance in a multi-degree-of-freedom system and include a subharmonic spectrum as a particular case. Both the subharmonic and self-modulation modes demonstrate a high localization around the defect and provide opportunities for early detection and recognition of damaged areas.read more
Citations
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Journal ArticleDOI
Graphene-functionalized polymer composites for self-sensing of ultrasonic waves: An initiative towards “sensor-free” structural health monitoring
TL;DR: In this article, a built-in sensing network is formed with graphene nanoparticles, optimized and diffused in fibre-reinforced polymers, in which the quantum tunneling effect can be locally triggered when GUWs traverse the composites.
Journal ArticleDOI
Evolution of damage-induced nonlinearity in proximity of discontinuities in concrete
TL;DR: In this article, the successive phases that concrete samples with discontinuities enter by progressively increasing the applied external load are studied, using a Preisach-Mayergoyz space approach, developed in order to capture all the observed behaviors.
Journal ArticleDOI
Nonlinear ultrasonics-based technique for monitoring damage progression in reinforced concrete structures
TL;DR: In this paper, the authors investigated the damage progression in reinforced concrete (RC) structures at different levels of damage using linear and nonlinear ultrasonic techniques, and found that the changes in linear parameters due to damage progression are often insignificant and inconsistent.
Journal ArticleDOI
Closed crack imaging using time reversal method based on fundamental and second harmonic scattering
TL;DR: In this article, 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 longitudinal scattered field due to an incident longitudinal wave.
Journal ArticleDOI
Subharmonic phased array for crack evaluation using surface acoustic wave
TL;DR: In this article, the authors proposed an imaging method using a subharmonic phased array for crack evaluation using surface acoustic waves (SAW SPACE) with water immersion, which was applied to fatigue crack and stress corrosion crack (SCC) specimens.
References
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BookDOI
Review of Progress in Quantitative Nondestructive Evaluation
TL;DR: The Review of Progress in Quantitative NDE (ROPQN) as mentioned in this paper is the world's leading conference in reporting annually new research and development results in quantitative NDE and promotes communication between the research and engineering communities and emphasize current reporting of work in progress.
Journal ArticleDOI
Ultrasonics of non-linear contacts: propagation, reflection and NDE-applications
TL;DR: The results of experimental investigation of acoustic non-linear phenomena on contact boundaries are presented in this article, where simulation experiments demonstrated a threshold nonlinear distortion due to "clapping" and "kissing" mechanisms, multiple bifurcations and chaos development for contact vibrations.
Journal ArticleDOI
Instability, chaos, and "memory" in acoustic-wave-crack interaction.
Igor Yu. Solodov,B. A. Korshak +1 more
TL;DR: A new class of nonlinear acoustic phenomena has been observed for acoustic wave interactions with cracked defects in solids, and acoustic-wave impact on a crack is shown to exhibit amplitude hysteresis and storage for parametric and non linear acoustic effects.
Journal ArticleDOI
Sensitive imaging of an elastic nonlinear wave-scattering source in a solid
TL;DR: In this paper, the nonlinear response of a solid by modulation of a high by a low-frequency wave, and employing moving-window, synchronous detection is used to locate isolated nonlinear scattering source(s) in solids.
Journal ArticleDOI
Self-induced hysteresis for nonlinear acoustic waves in cracked material.
TL;DR: The proposed theoretical models attribute the phenomenon to hysteresis in transition of the acoustically forced oscillation of cracks from a nonclapping regime to a regime of clapping contacts.