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, the influence of speed and load on the generation of high-frequency acoustic emission (AE) for gear condition monitoring is investigated. And the experimental findings suggest that any percentage reduction in specific film thickness (gimel) is a direct consequence of a change in load condition, resulting in a nine and fourfold percentage change in AE rms for the spur and helical gear sets, respectively.
58 citations
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TL;DR: In this article, the use of acoustic emission (AE) for damage location in steel composite bridges is explored, where the frequency characteristics of the two modes are compared and modal separation via bandpass frequency filtering is demonstrated.
Abstract: This paper explores the use of acoustic emission (AE) for damage location in steel composite bridges. Damage assessment of a steel-concrete composite bridge is obtained using conventional time-of-arrival location techniques in both global and local monitoring trials. The local monitoring aspect of the field investigation is simulated under laboratory conditions and waveforms acquired during both studies are compared. A Finite Element (FE) study of a component of the bridge is presented and compared with location results from the field study confirming regions of possible crack location. Laboratory studies on a 12 m I-beam are presented to explore the use of Lamb waves as an alternative location method to the current time of arrival (TOA) method. The presence and dispersive behaviour of the flexural and extensional Lamb modes in digitised AE signals is observed. The frequency characteristics of the two modes are compared and modal separation via bandpass frequency filtering is demonstrated. This separation...
58 citations
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TL;DR: In this article, the complex Morlet continuous wavelet transform (CWT) was applied to acoustic emission (AE) signals from dynamic tests conducted on a reinforced concrete slab with a shaking table.
58 citations
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TL;DR: In this article, the authors used acoustic emissions (AE) as a quantitative measure of size independent specific fracture energy of concrete beams and the concepts of boundary effect and local fracture energy were used to obtain size independent AE energy from which size independent fracture energy was obtained.
58 citations
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TL;DR: In this paper, an experimental investigation by mechanical and acoustic emission (AE) data and Cohesive Zone Modeling (CZM) technique are carried out to determine position of the crack tip during propagation of mode I delamination in the glass/epoxy composite specimens.
58 citations