期刊
APPLIED PHYSICS LETTERS
卷 102, 期 6, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4791573
关键词
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资金
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1132416] Funding Source: National Science Foundation
Here, digital image correlation is demonstrated to be an accurate tool for the noncontact, nondestructive, and rapid characterization of the converse effect of piezoelectric materials. The longitudinal (d(33)) and transverse (d(31)) piezoelectric strain coefficients of lead zirconate titanate-5H wafers are measured simultaneously by imaging the wafer's cross section. The results are validated through laser interferometry and the large piezoresponse at switching domains is observed in strain-electric field butterfly loops. The proposed technique is simple and low cost requiring only an optical microscope and unlike indirect measurement methods requires little sample preparation and no information regarding the mechanical properties of the specimen. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4791573]
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