Topic
Acoustic emission
About: Acoustic emission is a research topic. Over the lifetime, 16293 publications have been published within this topic receiving 211456 citations.
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TL;DR: In this article, acoustic emission (AE) technique is used to characterize the damage progression and reveal the failure mechanism of steel fiber reinforced concrete (SFRC) during the whole loading process, and an analytical formulation for the damage evolution law is developed and the prediction yields a close estimation of SFRC damage progression.
77 citations
TL;DR: In this paper, the effect of various stress ratios σ 2/σ3 under varying magnitudes of σ2 and σ3 on 3D stress-strain responses, 3D transport, 3-D ultrasonic wave velocities, and acoustic emission properties is recognized.
77 citations
TL;DR: In this paper, the nonlinear interaction between elastic surface waves and an almost uniform time-dependent electric field was demonstrated in LiNbO3 at 17 MHz, where the electric field is almost uniform.
Abstract: Nonlinear interaction between elastic surface waves and an almost uniform time‐dependent electric field is demonstrated in LiNbO3 at 17 MHz.
77 citations
77 citations
TL;DR: In this article, a new approach for the analysis of transient waves propagating in anisotropic composite laminates is presented, where the wavelet transform (WT) using the Gabor wavelet is applied to the time-frequency analysis of dispersive flexural waves in these plates.
Abstract: A new approach is presented for the analysis of transient waves propagating in anisotropic composite laminates. The wavelet transform (WT) using the Gabor wavelet is applied to the time-frequency analysis of dispersive flexural waves in these plates. It can be shown that the peaks of the magnitude of WT in a time-frequency domain is related to the arrival times of the group velocity. Experiments were performed using a lead break as the simulated acoustic emission source on the surface of unidirectional and quasi-isotropic laminates. A method was developed to obtain the group velocity of the flexural mode as a function of frequency. Theoretical predictions were made using the Mindlin plate theory, which includes the effects of shear deformation and rotatory inertia. Our predictions on the dispersion of the flexural mode showed good agreement with the experimental results.
77 citations