Investigation into metal wire based variant of EMI technique for structural health monitoring

Naskar, Susmita and Bhalla, Suresh (2013) Investigation into metal wire based variant of EMI technique for structural health monitoring. International Conference on Advances in Mechanical, Automobile and Aerospace Engineering, , New Delhi. pp. 795-800 .

Record type: Conference or Workshop Item (Paper)

Abstract

Electro mechanical impedance method (EMI) is a newly non-destructive evaluation method which is becoming very famous in the field of structural health monitoring. In this article a new approach is being proposed to effectively detect the initiation and progression of structural damage by the global dynamic electro-mechanical impedance (EMI) techniques. In this context the PZT patches are being used to determine the natural frequency and the strain mode shapes and the electro mechanical admittance signature to facilitate an improved damage assessment. Nowadays the safety issues for the case of composite building materials are getting more importance. The main problem of using EMI method is its brittleness so to overcome from this problem we are using this method by coupling a metal wire with a PZT element. In this method we created progressive damages and deterioration scenarios and we evaluated with the application of the proposed metal wire EMI method.

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