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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Papers
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TL;DR: In this article, the authors focus on analyzing the raw AE signal instead of root-mean-square signal (RMS) in a different approach to most acoustic emission (AE) research in grinding.
63 citations
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TL;DR: In this article, variable-angle shear tests were conducted for coal samples with moisture contents of 0, 7.10, 15.68, 22.90, and 23.09% to develop new insights into the mechanisms of crack propagation and strength weakening, combined with acoustic emission (AE) technique and infrared thermal imaging technique.
63 citations
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TL;DR: In this article, the authors explored the temporal characteristics of the acoustic far field of a Mach 1.3, high-Reynolds-number, ideally expanded axisymmetric jet and their potential correlation with large-scale turbulence structures within the jet.
Abstract: The temporal characteristics of the acoustic far field of a Mach 1.3, high-Reynolds-number, ideally expanded axisymmetric jet and their potential correlation with large-scale turbulence structures within the jet were explored. A dual microphone array, placed approximately 30 deg from the jet axis in the acoustic far field, was used to determine the temporal variations of the acoustic field and the approximate locations of intense noise sources within the jet, as well as the time of noise emission with respect to the acquired planar flow images. Simultaneous double-pulse flow visualizations were used to identify turbulence structures, as well as their development and interaction in the region of intense noise generation. The time history of the acoustic data showed individual large-amplitude noise events, periodic large-amplitude noise events, and long periods of relative quiet without any large-amplitude noise production
63 citations
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TL;DR: In this article, an acoustic emission (AE) based failure criterion was designed for determining the failure of an assembled commercial CFRP product during cyclic testing, where the failure was defined by a stiffness based criterion.
63 citations
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TL;DR: In this paper, the frequency-amplitude characteristics of acoustic emission (AE) signals were analyzed after different high temperature treatment, and the main frequency distribution at different stress level was analyzed.
63 citations