Guided wave phased array beamforming and imaging in composite plates

Ultrasonics
Lingyu Yu, Zhenhua Tian

Abstract

This paper describes phased array beamforming using guided waves in anisotropic composite plates. A generic phased array algorithm is presented, in which direction dependent guided wave parameters and the energy skew effect are considered. This beamforming at an angular direction is achieved based on the classic delay-and-sum principle by applying phase delays to signals received at array elements and adding up the delayed signals. The phase delays are determined with the goal to maximize the array output at the desired direction and minimize it otherwise. For array characterization, the beam pattern of rectangular grid arrays in composite plates is derived. In addition to the beam pattern, the beamforming factor in terms of wavenumber distribution is defined to provide intrinsic explanations for phased array beamforming. The beamforming and damage detection in a composite plate are demonstrated using rectangular grid arrays made by a non-contact scanning laser Doppler vibrometer. Detection images of the composite plate with multiple surface defects at various directions are obtained. The results show that the guided wave phased array method is a potential effective method for rapid inspection of large composite structures.

References

May 15, 2003·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Paul D Wilcox
Jul 4, 2003·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Paul D Wilcox
Nov 24, 2004·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·René SicardJacques Goyette
Jun 14, 2005·Ultrasonics·Kevin R Leonard, Mark K Hinders
Aug 3, 2005·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Paul WilcoxPeter Cawley
Apr 18, 2006·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Paul FrommePeter Cawley
Aug 28, 2007·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Tadeusz Stepinski
Jan 8, 2008·The Journal of the Acoustical Society of America·Alexander Velichko, Paul D Wilcox
Dec 31, 2009·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Thomas ClarkeAnthony John Croxford
Sep 30, 2010·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Ricardo T HigutiFrancisco Montero de Espinosa
Oct 5, 2010·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·James Hall, Jennifer E Michaels
Dec 31, 2010·Ultrasonics·Thomas E MichaelsMassimo Ruzzene
Mar 8, 2013·The Journal of the Acoustical Society of America·Ross M Levine, Jennifer E Michaels
Jan 21, 2014·The Journal of the Acoustical Society of America·Evgeny GlushkovRolf Lammering

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