TY - JOUR
T1 - Piezoelectric Performance of Piezoceramic-Polymer Composites with 2–2 Connectivity-A Combined Theoretical and Experimental Study
AU - Zhang, Q. M.
AU - Cao, Wenwu
AU - Zhao, J.
AU - Cross, L. E.
N1 - Funding Information:
Manuscript received July 20, 1993; revised February 24, 1994. This work was supported by the Office of Naval Research through Grant N00014-93-1-0340. The authors are with the Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802 USA. IEEE Log Number 9401997.
PY - 1994/7
Y1 - 1994/7
N2 - The piezoelectric performance of piezoceramic polymer composites with 2–2 connectivity at low frequency has been analyzed theoretically. Due to the elastic coupling between the ceramic and polymer phases, the strain components in directions perpendicular and parallel to the ceramic-polymer interface are not uniform in either phases. As a result, most of the stress transfer between the two phases occurs at the region near the surface of the composite. In order to improve the piezoelectric performance of a composite, the polymer matrix should have a small Young's modulus and a large shear modulus, and a large aspect ratio. It may be also desirable to have the polymer matrix made of two different polymers with the stiffer one near the surface and the softer one in the interior of the composite. To compare with the theoretical calculations, surface profiles of a series of 2–2 composites with different aspect ratios were measured, and the experimental results show excellent agreement with the theoretical calculations. The nonuniform strain and stress in the direction parallel to the ceramic-polymer interface of a composite were also confirmed by experiments.
AB - The piezoelectric performance of piezoceramic polymer composites with 2–2 connectivity at low frequency has been analyzed theoretically. Due to the elastic coupling between the ceramic and polymer phases, the strain components in directions perpendicular and parallel to the ceramic-polymer interface are not uniform in either phases. As a result, most of the stress transfer between the two phases occurs at the region near the surface of the composite. In order to improve the piezoelectric performance of a composite, the polymer matrix should have a small Young's modulus and a large shear modulus, and a large aspect ratio. It may be also desirable to have the polymer matrix made of two different polymers with the stiffer one near the surface and the softer one in the interior of the composite. To compare with the theoretical calculations, surface profiles of a series of 2–2 composites with different aspect ratios were measured, and the experimental results show excellent agreement with the theoretical calculations. The nonuniform strain and stress in the direction parallel to the ceramic-polymer interface of a composite were also confirmed by experiments.
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U2 - 10.1109/58.294118
DO - 10.1109/58.294118
M3 - Article
AN - SCOPUS:0028465034
SN - 0885-3010
VL - 41
SP - 556
EP - 564
JO - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
JF - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
IS - 4
ER -