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Higher order modes cluster (HOMC) guided waves - A new technique for ndt inspection
Chandrasekaran Jayaraman, ,
Published in American Institute of Physics
Volume: 1096
Pages: 121 - 128
This paper reports the existence of Higher Order Modes Cluster Guided Waves (HOMC-GW) which are highly non-dispersive over considerable distance of propagation. This HOMC-GW is a recently explored phenomena which is found to occur at very high frequency- thickness product i.e. 15 MHz.mm to 35 MHz.mm. In order to understand the generation, propagation and dispersion characteristics of HOMC GW several simulations were carried out using 2D ABAQUS finite element models at different frequency-thickness products. Experiments were also carried out on an Aluminum plate sample of dimension 2ft × 3ft × 8mm using a commercial 2.25 MHz, 1 inch diameter transducer mounted on a machined acrylic wedge. The simulation results are found to capture the features seen in the experiments rather well. The HOMC-GW technique appears to have a greater potential for nondestructive inspection of large structures over ranges of the order of a couple of meters. © 2009 American Institute of Physics.
About the journal
JournalData powered by TypesetAIP Conference Proceedings
PublisherData powered by TypesetAmerican Institute of Physics
Open AccessNo