alexa Acoustic Emission Signals be Used in Condition Monitoring and Diagnosis

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Acoustic Emission Signals be Used in Condition Monitoring and Diagnosis

Acoustic emission is elastic waves generated due to a rapid release of energy as a result of internal crack or material deformation. The rapid release of AE energy was reported in early pottery making to determine the quality of the pottery which goes back centuries ago and it was only in early 1900s saw the revival of its application in material evaluation and failure detection. The elastic wave frequencies analogous to ‘tin crying’ can range from as low as 1 kHz to a high 1 MHz. AE frequencies in materials evaluation and characterization, and in engineering asset health monitoring typically range between 100 kHz and 1 MHz. Sampling at this frequency range represents a major setback on its application in early days until recent advances in electronics and computing technology with the ability to sample well beyond MHz range.

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