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This paper describes a combination of simulation and experimentation to evaluate the advantages offered by utilizing a hexagonal shaped array element in a 2D NDE array structure. The active material is a 1–3 connectivity piezoelectric composite structure incorporating triangular shaped pillars—each hexagonal array element comprising six triangular pillars. A combination of PZFlex, COMSOL and Matlab has been used to simulate the behavior of this device microstructure, for operation around 2.25 MHz, with unimodal behavior and low levels of mechanical cross-coupling predicted. Furthermore, the application of hexagonal array elements enables the array aperture to increase by approximately 30%, compared to a conventional orthogonal array matrix and hence will provide enhanced volumetric coverage and SNR. Prototype array configurations demonstrate good corroboration of the theoretically predicted mechanical cross-coupling between adjacent array elements.
|Title of host publication||Review of progress in quantitative nondestructive evaluation|
|Subtitle of host publication||AIP Conference Proceedings|
|Editors||D.O. Thompson, D.E. Chimenti|
|Place of Publication||Melville|
|Number of pages||6|
|Publication status||Published - 22 Feb 2010|
|Event||36th Annual Review of Progress in Quantitative Nondestructive Evaluation - Kingston, Rhode Island, United States|
Duration: 26 Jul 2009 → 31 Jul 2009
|Name||AIP Conference Proceedings|
|Publisher||American Institute of Physics|
|Conference||36th Annual Review of Progress in Quantitative Nondestructive Evaluation|
|City||Kingston, Rhode Island|
|Period||26/07/09 → 31/07/09|
- 2D piezoelectric array
- hexagonal elements
- ultrasonic inspection
- transducer arrays
FingerprintDive into the research topics of 'Hexagonal array structure for 2D NDE applications'. Together they form a unique fingerprint.
- 1 Finished
Gachagan, A. & Hayward, G.
1/04/08 → 31/03/11