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Damage Assessment in Composites Using Frequency Discrimination of Acoustic Emission Signals

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Recent Advances in Structural Engineering, Volume 1

Part of the book series: Lecture Notes in Civil Engineering ((LNCE,volume 11))

Abstract

For assessment of damages in real time for the layered composite plates, which have gained wide acceptance in weight-sensitive engineering structures, acoustic emission (AE) signals captured at different locations of the plate can be used. For such structures, damages such as delamination, matrix cracking, fibre failure, etc., which may not be detected visually can be identified by discrimination of the frequency content of the response AE signals and can be used for structural health monitoring purpose. In this study, an attempt is made to utilise frequency content of the AE response caused due to the damage as a discriminating factor for determining different modes of failures in multi-layered composite plates using Finite Element (FE) technique. Numerical examples are solved. The results show that the source frequency has a telling effect on the frequency content of the response signals which can be used for discrimination of flexural, i.e. out-of-plane and extensional, i.e. in-plane modes.

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References

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Correspondence to Aloke Kumar Datta .

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Sengupta, S., Datta, A.K., Topdar, P. (2019). Damage Assessment in Composites Using Frequency Discrimination of Acoustic Emission Signals. In: Rao, A., Ramanjaneyulu, K. (eds) Recent Advances in Structural Engineering, Volume 1. Lecture Notes in Civil Engineering , vol 11. Springer, Singapore. https://doi.org/10.1007/978-981-13-0362-3_87

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  • DOI: https://doi.org/10.1007/978-981-13-0362-3_87

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-13-0361-6

  • Online ISBN: 978-981-13-0362-3

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