期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 39, 期 6, 页码 2091-2102出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2018.12.058
关键词
Hysteresis loops; Global DIC; Strain field; Regularisation; Strain homogeneity
资金
- Automotive Mechatronics Chair
The strain response of a polarised PZT was characterised using Digital Image Correlation (DIC). The DIC algorithm is based on a global approach and regularises the displacement field using the balance equations of solid mechanics. The measurement error is reduced by correcting the displacements that are mechanically not admissible. A ferroelectric test showed that the standard deviations of strain fields remain mostly under 1.2 x 10(-4) for an element size of 64 px. The standard deviation on the average value is 3 x 10(-6). The strain field is homogeneous and its average value is consistent with the strain obtained from a CCD laser measurement device. The longitudinal strain, transverse strain and polarisation response of the PZT were measured for bipolar and unipolar loadings ranging from 50 to 5000 V/mm. Material properties were extracted from these measurements. This work shows the advantages of a novel 2D-DIC algorithm for piezoelectric strain characterisation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据