19 April 2007 Single crystal piezoelectric composites for advanced NDT ultrasound
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Abstract
In this paper, the design, fabrication and characterization of PMN-PT single crystal/epoxy composites are reported for NDT ultrasound transducers. Specifically, 1-3 PMN-PT/epoxy composites with center frequencies of 5 MHz - 40 MHz were designed and fabricated using either the dice-and-fill method or a photolithography based micromachining process. The measured electromechanical coefficients for composites with frequency of 5 MHz - 15 MHz were about 0.78-0.83, and the coupling coefficients for composites with frequencies of 25 MHz- 40 MHz were about 0.71-0.72. The dielectric loss remains low (< 0.05). These properties hold promise for advanced NDT ultrasound applications.
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Xiaoning Jiang, Xiaoning Jiang, Kevin Snook, Kevin Snook, Wesley S. Hackenberger, Wesley S. Hackenberger, Xuecang Geng, Xuecang Geng, } "Single crystal piezoelectric composites for advanced NDT ultrasound", Proc. SPIE 6531, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2007, 65310F (19 April 2007); doi: 10.1117/12.715150; https://doi.org/10.1117/12.715150
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