Conference_programme: 21.1 - Source localization and acoustic array processing

Lecture: Acoustic Emission Source Localization in Advanced Composite Structures

Author(s): Sikdar Shirsendu, Wiesław

Summary:
This paper presents a theoretical, numerical, and experimental analysis of damage induced acoustic emission (AE) characteristics in advanced composite structures. Towards this, a global matrix method based two-dimensional semi-analytical model is applied to study the AE response in an advanced composite structure (ACS). The finite element simulation of AE wave propagation in an ACS is then carried out using different sensory network configurations in ABAQUS. Laboratory experiments are also conducted on a sample ACS using piezoelectric AE sensors. A good agreement is noticed among the theoretical, numerical, and experimental results. Finally, the AE source locations are efficiently identified using the registered AE signals. A thorough assessment of different AE source locations was carried out to verify the robustness of the proposed online monitoring technique. The results clearly represent the efficiency of the proposed technique for localizing the AE source locations in such complex and advanced structures. Moreover, the proposed framework is reliable and not dependent upon the operator’s expertise.

Corresponding author

Name: Dr Shirsendu Sikdar

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Country: Poland