TY - GEN
T1 - Experimental and finite element model directivity comparison between PZT and PMN-PT kerfless arrays
AU - Garland, Philip P.
AU - Bezanson, Andre B.
AU - Adamson, Robert B.A.
AU - Brown, Jeremy A.
PY - 2011
Y1 - 2011
N2 - This paper describes a preliminary study in comparing the directivity patterns of kerfless linear arrays when the piezoelectric substrate is changed from conventional PZT-5H to the next generation PMN-PT32% single crystal piezoelectric. The directivity patterns were compared both through finite element modeling and experiment. It was also found that a significantly better directivity pattern for PMN-PT32% could be measured when the unelectroded substrate between the elements was locked into what we presume is a different morphotropic phase than the active elements. The -6 dB one-way directivity was measured to be ± 18° degrees for the PZT kerfless array, ± 12° degrees for the PMN-PT array with a single uniform phase throughout the crystal, and ± 52° degrees for the PMN-PT crystal with what we assume are different mechanical properties in the substrate between the elements.
AB - This paper describes a preliminary study in comparing the directivity patterns of kerfless linear arrays when the piezoelectric substrate is changed from conventional PZT-5H to the next generation PMN-PT32% single crystal piezoelectric. The directivity patterns were compared both through finite element modeling and experiment. It was also found that a significantly better directivity pattern for PMN-PT32% could be measured when the unelectroded substrate between the elements was locked into what we presume is a different morphotropic phase than the active elements. The -6 dB one-way directivity was measured to be ± 18° degrees for the PZT kerfless array, ± 12° degrees for the PMN-PT array with a single uniform phase throughout the crystal, and ± 52° degrees for the PMN-PT crystal with what we assume are different mechanical properties in the substrate between the elements.
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U2 - 10.1109/ULTSYM.2011.0087
DO - 10.1109/ULTSYM.2011.0087
M3 - Conference contribution
AN - SCOPUS:84869067072
SN - 9781457712531
T3 - IEEE International Ultrasonics Symposium, IUS
SP - 365
EP - 368
BT - 2011 IEEE International Ultrasonics Symposium, IUS 2011
T2 - 2011 IEEE International Ultrasonics Symposium, IUS 2011
Y2 - 18 October 2011 through 21 October 2011
ER -