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, an acoustic emission (AE) phenomenon has many attributes that make it desirable as a structural health monitoring or non-destructive testing technique, including the capability to continuously monitor large structures using a sparse sensor array and with no dependency on defect size.
75 citations
TL;DR: In this article, wear tests have been made using flat dies and a U-bending tool to study wear behavior and it simulates forming over the linear portion of a stamping tool.
75 citations
TL;DR: In this article, acoustic emission (AE) and electrostatic (ES) signals generated by a bearing steel contact under dry sliding conditions were used to monitor the various phases of delamination wear.
75 citations
TL;DR: In this paper, a case study concerning both numerical modeling and in-situ monitoring of a retrofitted RC beam with non-rectangular cross-section is presented before retrofitting, non-destructive techniques, such as pull-out and impact tests, were used to estimate the mechanical parameters of concrete at the same time, a long-term monitoring with the Acoustic Emission (AE) technique was carried out in order to investigate on creep effects and micro-cracking phenomena Then, after a complete removal of the overload and retrofitting with FRP sheets, an in-
Abstract: A case study concerning both numerical modeling and in-situ monitoring of a retrofitted RC beam with non-rectangular cross-section is presented Before retrofitting, non-destructive techniques, such as pull-out and impact tests, were used to estimate the mechanical parameters of concrete At the same time, a long-term monitoring with the Acoustic Emission (AE) technique was carried out in order to investigate on creep effects and microcracking phenomena Then, after a complete removal of the overload and retrofitting with FRP sheets, an in-situ loading test was performed At that stage, the AE technique was again profitably used for the analysis of the cracking progression leading to FRP debonding A numerical model of the structure is then proposed in the framework of the FE discretization with mechanical parameters estimated according to an inverse analysis on the monitored mechanical behavior of the structure before retrofitting According to this model it is shown that, when the flexural inertia of the retrofitted beam is considerably higher than that of the unrepaired beam, snap-back instabilities can take place Finally, considering the self-similarity between the acoustic emission phenomenon and seismicity, an analogy between the snap-back instability of the FRP delamination and that occurring during fault growth is proposed
75 citations
TL;DR: In this paper, the authors investigated the application of wavelet-based Acoustic Emission (AE) signal processing on micromechanisms to identify failure in dual phase steels (DPS)s.
75 citations