Strain analysis of ionic polymer-metal composite cantilever actuator using DIC method利用 DIC 方法分析离子聚合物—金属复合悬臂驱动器的应变

Abstract摘要

A non-contact digital image correlation method combined with digital microscopy is used to measure the microscale displacement and strain of an ionic polymer–metal composite cantilever under applied voltage. A roughened platinum-electrode surface provides the speckle texture needed for correlation. The measured longitudinal strain varies approximately linearly through the thickness, while its gradient changes linearly with electric field. Longitudinal and transverse strains decrease with actuation frequency, and water loss in air produces contraction. The study demonstrates the usefulness of micro-DIC for characterizing electroactive polymer actuators.

本研究将非接触式数字图像相关与数字显微镜结合，用于测量施加电压时离子聚合物—金属复合悬臂驱动器的微尺度位移和应变。研究通过粗化铂电极表面获得 DIC 所需的散斑纹理。结果显示，纵向应变沿厚度方向近似线性分布，其梯度与电场强度呈线性关系；纵向和横向应变会随驱动频率升高而降低，空气中的失水还会引起收缩变形。研究验证了微尺度 DIC 在电活性聚合物驱动器表征中的作用。