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A 32-element, 5MHz linear array, incorporating PMN-PT 1-3 piezo-polymer composite, has been designed using finite element (FE) modelling. The Elasto-Electric material properties of the PMN-PT samples were characterized and evaluated within the FE model to ensure accurate corroboration. The array configuration and performance were then investigated, including array microstructure, and steering and focusing ability. The matching and backing material selection, array sensitivity and bandwidth were assessed using pulse echo responses. Imaging performance was then undertaken, employing full matrix capture and total focusing method. For performance comparison, a reference array comprising of conventional PZT5H ceramic was also investigated, following the same design criteria. The piezocrystal device provides a bandwidth of 87% and a sensitivity-bandwidth product improvement of 160% when compared to the reference PZT5H based array.
|Title of host publication||Proceeding 2018 IEEE International Ultrasonics Symposium|
|Place of Publication||New York|
|Number of pages||4|
|Publication status||Published - 20 Dec 2018|
|Event||2018 IEEE International Ultrasonics Symposium - Portopia Hotel, Kobe, Japan|
Duration: 22 Oct 2018 → 25 Oct 2018
|Conference||2018 IEEE International Ultrasonics Symposium|
|Abbreviated title||IUS 2018|
|Period||22/10/18 → 25/10/18|
- ultrasound linear array
- non destructive testing
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