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History of Eddy Current Testing
Eddy current testing has its origins with Michael Faraday's discovery of electromagnetic induction in 1831.…
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Eddy Current Testing (ET) Overview
Eddy current testing a modern Non-destructive testing – NDT method that has become one of…
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AE Applications
Acoustic emission is a very versatile, non-invasive way to gather information about a material or…
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AE Barkhausen Techniques
Barkhausen Effect The Barkhausen effect refers to the sudden change in size of ferromagnetic domains that occur during…
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AE Source Location Techniques
Multi-Channel Source Location Techniques: Locating the source of significant acoustic emissions is often the main…
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Data Display
Software-based AE systems are able to generate graphical displays for analysis of the signals recorded…
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AE Signal Features
With the equipment configured and setup complete, AE testing may begin. The sensor is coupled…
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Equipment
Acoustic emission testing can be performed in the field with portable instruments or in…
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Theory – Acoustic Waves
Wave Propagation A primitive wave released at the AE source is illustrated in the figure…
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Theory – AE Sources
As mentioned in the Introduction, acoustic emissions can result from the initiation and growth of…