Beam Forming of Lamb Waves for Nondestructive Testing of Plates

Abstract:

For wide range defect detection in plate, acoustic beam optimization technique was investigated. The synthesis wave field obtained from the basic phased-addition is prone to be influenced by the noise and the resolution is low. To improve the performance of beam forming of array, the synthesis acoustic field is processed with amplitude weighting. The experimental data have been processed with phase shift and amplitude weighted optimization. It is shown that the proposed beam forming technique with transducer array can recognize the features in plate.

• Periodical: Applied Mechanics and Materials (Volumes 490-491)
• Pages: 1512-1516
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.490-491.1512
• Online since: January 2014
• Authors: Qing Zeng Ma, Jing Pin Jiao, Ping Hu, Jing Yang
• Keywords: Amplitude Weighting, Annular Array, Beam-Forming, Lamb Wave, Structural Health Monitoring (SHM)

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