Lamb Wave Propagation In Plate With Different Depth Of Corrosion Defect

Nurul Fahima, Mohd Kamel (2015) Lamb Wave Propagation In Plate With Different Depth Of Corrosion Defect. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Lamb wave propagation is one of the guided wave techniques that had been rapidly develop in the industries especially for the inspection of thin plate structures. Therefore, a study related on the Lamb wave propagation had carried out with the purpose on investigating and analysing the wave propagation produced when the wave is in contact with the defect on the thin plate. The plate modelling is perform using the ABAQUS software and excitation of the wave propagation will be compare with the experimental waveform propagation. Behaviour of the wave interaction with the defect will be compared and discuss. The wave modes that are used in the case study are symmetrical and anti-symmetrical modes which known as S0-mode and A0-mode respectively. Both wave modes are excited in 6 mm aluminium plate using a 5 cycles of tone burst signal at canter frequencies of 80 kHz, 100 kHz, and 120 kHz. The Lamb wave propagation study covers the effect of the wave propagation when different depths of rounded defects are applied. The study covers the investigation on effect frequency and the defect orientation into the wave propagation in the plate structures.

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