A Novel Determination Method of IPMC Young’s Modulus Based on Cantilever Resonance Theory
A Novel Determination Method of IPMC Young’s Modulus Based on Cantilever Resonance Theory
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DOI：
10.4028/www.scientific.net/amm.66-68.747
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发表时间：
2011-07
期刊：
影响因子：
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通讯作者：
L. Hao;Jianye Gao;H. L.
中科院分区：
文献类型：
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作者：
L. Hao;Jianye Gao;H. L.
提出了一种新的离子聚合物金属复合材料杨氏模量的测定方法。该方法弥补了传统的拉伸、弯曲等测试方法对IPMC带材损伤大、精度低等不足。本文提出了一种基于悬臂梁共振理论的新型检测方法。悬臂梁共振理论是测定金属丝和金属带杨氏模量的方法之一。该方法采用Euler-Bernoulli梁建立梁的振动微分方程。然后利用分离变量法求出方程的通解。在考虑边界条件的情况下，得到了弹性模量与第一阶固有频率的关系式。受实验设备和测试方法的限制，该方法尚未在复合材料中得到应用。本文尝试将该方法应用于IPMC材料。在测试实验中采用了激光位移探测技术。激光位移传感器是一种高精度的非接触式激光位移测量装置。测量的距离可以用来测量被测物体的位置变化，它是基于三角形原理。
The research is aimed at presenting a novel determination method of IPMC (Ionic Polymer Metal Composites) Young’s Modulus. This method would fill up some deficiencies, such as damaging the tested IPMC strip, having low precision and so on, in the traditional method like tensile test and bending test. The paper presents a novel determination method based on cantilever resonance theory. Cantilever resonance theory is one of the methods to determinate the Young’s modulus of metal wire and metal strip. This method adopts Euler-Bernoulli beam to build a vibration differential equation of the beam. Then, by using the separate variable method, the general solution of the equation would be obtained. Considering the boundary conditions, a formula about the relation of the Young’s modulus and the first natural frequency is obtained. Limited by the experimental equipment and test method, this method has not been applied in the composite material. This paper attempts to apply this method in the IPMC material. The laser probing DISP (displacement) technique is applied in the test experiment. The laser displacement transducer is a kind of accurate un-contact laser displacement measurement set. The distance measured, which could be used to measure the change in position of the tested object, is based on the triangle principle.