acoustic emission


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acoustic emission

[ə′küs·tik ē′mish·ən]
(acoustics)
The phenomenon of transient elastic-wave generation due to a rapid release of strain energy caused by a structural alteration in a solid material. Also known as stress-wave emission.
References in periodicals archive ?
A diagram of acoustic emission resultant signal amplitude variation over time in relative units during friction of composite material surface layers, according to (2).
These types of systems suffer from inherent noise problems; they tend to pick up acoustic emissions from everything including road traffic, work-over rigs and pumps.
Diagram of the acoustic emission measuring system applied to the loaded beam (1) is shown in Fig.
Application de la methode d'emission acoustique aux essais du comportement du beton impregne de polymere soumis a la compression [Application of the method of acoustic emission testing of the behavior of polymer impregnated concrete subjected to compression], Materials and Structures 27(170): 331-337.
For the method just described, an analysis of the uncertainty of values of acoustic emission transducer sensitivity (6) was published in 1982.
The aim of this research is to propose and develop the in-process monitoring system to identify the cutting states of chip formation and chatter for the carbon steel (S45C) in CNC turning process by utilizing the sensor fusion, which are the force sensor, the sound sensor, the accelerometer sensor and the acoustic emission sensor via the neural network using the perceptron technique.
To obtain information about the failure mode, the acoustic emission (AE) technique (Senso-phone AED-40 device with Physical Acoustics Corporation Micro30S sensors) was used in the frequency range of 100 to 600 kHz with logarithmic amplifying.
The role of stripe wear in causing acoustic emissions from alumina ceramic-on-ceramic bearings.
The beams selected by TxDOT performed well during load testing--passing the major criteria selected for the acoustic emission test.
Acoustic Emission of Pharmaceutical Powders During Compaction, Powder Technology 128, No.

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