General review of developments in Acoustic Emission methods

Tonolini, F.; Sala, A.; Villa, G.

doi:10.1016/0308-0161(87)90075-5

Cited by 17 publications

(13 citation statements)

References 7 publications

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“…Currently, the AE technique is used in many industries for nondestructive testing of various materials and structures. A major advantage of AE measurement is that it can monitor in real time the development of defects occurring inside a material without further damaging of the material [10,11]. However, for some applications, the operating environments are often very noisy, while the AE signals are usually very weak.…”

Section: Acoustic Emissionmentioning

confidence: 99%

Acoustic Emission Monitoring of Fracture Tests

Chuluunbat¹,

Kostryzhev²

2018

Advanced Engineering Testing

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Identification of defect(s) where crack initiation is possible and prediction of crack propa gation are of great importance in materials engineering. The current chapter analyzes the application of the acoustic emission (AE) technique for fracture monitoring in the line pipe steel during single-edge-notched tension (SENT) test and Charpy V-notch (CVN) impact test. It was found that the AE activity starts before the yield point, due to the stress concentration at the crack tip, and increases suddenly before the peak load is reached, due to the fracture initiation. Toward the end of the test, the AE hit density increases again, following intensive crack propagation. The AE analysis conducted in the present chapter showed a strong evidence of AE hit density increasing before the peak load is reached, the moment corresponding to fracture initiation.

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Section: Acoustic Emissionmentioning

confidence: 99%

Acoustic Emission Monitoring of Fracture Tests

Chuluunbat¹,

Kostryzhev²

2018

Advanced Engineering Testing

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“…The acoustic emission (AE) technique, which is a nondestructive testing method, is a technology that can diagnose the working state of mechanical parts through detecting and analyzing the transient elastic wave generated by a rapid release of local energy sources within a material such as cracking, rubbing, polishing, impacting, cavitations, and leakage [8]. The AE technique with high sensitivity [9] was widely used in various fields such as the process monitoring of mechanical manufacturing [10,11], construction industry [12], material researches [13,14], and leakage detection of pipelines [15,16]. Jomdecha et al used the AE parameters including amplitude, counts, click rate, and time to assess different types of corrosion.…”

Section: The Principles Of Acoustic Emission (Ae)mentioning

confidence: 99%

Nondestructive Detection of Valves Using Acoustic Emission Technique

Jin

Heng-hu

Hong

et al. 2015

Advances in Materials Science and Engineering

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The applications of acoustic emission (AE) technique in detection of valves are presented in this review, and the theoretical models and experimental results of nondestructive detection of valves using AE are provided. The generation of AE signals and the basic composition of AE detection system are briefly explained. The applications of AE technique in valves are focused on condition monitoring, failure, cavitation detection, and the development of portable measuring devices. All results prove that the AE technique works well in the detection of valves.

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“…Deformation of solid materials beyond a critical limit is responsible for the development of a complex network of damaged areas within their volume, leading eventually to macroscopic rupture. The whole process is accompanied by various phenomena such as emission of acoustic 1,2 and electromagnetic signals 3,4 and generation of weak electric currents, usually denoted as pressure stimulated currents (PSCs). [5][6][7][8] In general, damage processes are composed of a multitude of phenomena, such as dislocation movement, formation of dislocation pile-ups, and generation and coalescence of micro-cracks.…”

Section: Introductionmentioning

confidence: 99%

“…The model described by Equation (1) has been already successfully applied on a series of experimental protocols with standardized specimens of relatively simple geometry and small dimensions, made of monocrystalline material or granite, 15,17,18 to describe the energy released through both electromagnetic signals and AEs. For the moment being, however, the model of Equation (1) has not been validated against data obtained from complex structural set-ups; neither has it been attempted to be used for modelling the PSCs generated during the loading and damage procedure.…”

Section: Introductionmentioning

confidence: 99%

Modelling acoustic and electric signals emitted during structural tests in terms of log‐periodic power‐law models

Mastrogiannis

Andreopoulos

Potirakis

et al. 2020

Mat Design & Process Comms

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An alternative way to represent data regarding internal damage processes, specifically the data provided by the acoustic emission (AE) technique and the pressure stimulated currents (PSCs), is attempted in this study, in terms of logperiodic power-law models. Both monitoring techniques have been already successfully considered widely, either independently or in juxtaposition to each other, in case of standardized laboratory experiments with specimens of relatively simple geometry and moderate dimensions made of a single material. The innovation of the present study is that the AE and PSC data modelled were recorded during structural tests with specimens of complicated geometry made of three different materials, ie, marble, cement paste/mortar, and titanium. It was clearly concluded that both AE and PSC data can be quite successfully modelled in terms of log-periodic power-law models. Moreover, it was indicated that in case of complex experimental setups , log-periodic power-law models approach experimental data according to a more accurately manner than pure power-law models do, thus opening up new possibilities of studying the internal damage processes and detecting perhaps useful prefailure indicators.

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General review of developments in Acoustic Emission methods

Cited by 17 publications

References 7 publications

Acoustic Emission Monitoring of Fracture Tests

Acoustic Emission Monitoring of Fracture Tests

Nondestructive Detection of Valves Using Acoustic Emission Technique

Modelling acoustic and electric signals emitted during structural tests in terms of log‐periodic power‐law models

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