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首页> 外文会议>AMD-vol.257; American Society of Mechanical Engineers(ASME) International Mechanical Engineering Congress and Exposition; 20061105-10; Chicago,IL(US) >MODELING OF PIEZOELECTRIC RESPONSE IN PVDF FOR MONITORING OF MECHANICAL BENDING IN HINGES
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MODELING OF PIEZOELECTRIC RESPONSE IN PVDF FOR MONITORING OF MECHANICAL BENDING IN HINGES

机译：用于监测铰链机械弯曲的PVDF中压电响应的建模

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摘要

Monitoring of bending of hinges is very important to predict the motion of mechanical devices. Piezoelectric based monitoring systems have been utilized to detect the degree of motion and deflection. In order to apply piezoelectric layers on hinges, flexible materials have to be used. Subsequently, polymer materials attracted attention in connection with monitoring of large deflections. In this paper, feasibility of using PolyVinylidine DiFluoride (PVDF) layers to detect bending of a hinge was investigated based on finite element analysis (FEA). A device was designed by placing a PVDF layer on a hinge which can bend 90 degree from the straight position was constructed. Two possibilities of PVDF attachment were investigated: (ⅰ) uniformly bonded PVDF along the arms and (ⅱ) attachment of PVDF at the end point of the arms. The effect of bending in different directions on piezoelectric voltage was also evaluated to check the possible noise levels on induced voltages. It was found that PVDF piezoelectric layers can be effectively used in detection of degree of bending and deflection of mechanical components. The voltage generated by PVDF films attached at end points is five times higher than the voltage generated by the uniformly bonded PVDF films indicating that the unbounded PVDF is more sensitive.
机译：监视铰链弯曲对于预测机械设备的运动非常重要。基于压电的监测系统已被用于检测运动和偏转的程度。为了在铰链上施加压电层，必须使用柔性材料。随后，聚合物材料引起了人们对大挠度监测的关注。在本文中，基于有限元分析（FEA）研究了使用聚偏二氟乙烯（PVDF）层检测铰链弯曲的可行性。通过将PVDF层放置在可以从笔直位置弯曲90度的铰链上来设计设备。研究了PVDF附着的两种可能性：（ⅰ）沿臂均匀粘结的PVDF，以及（ⅱ）在臂的端点附着PVDF。还评估了在不同方向上弯曲对压电电压的影响，以检查在感应电压上可能出现的噪声水平。已经发现，PVDF压电层可以有效地用于检测机械部件的弯曲和挠曲程度。附着在端点的PVDF膜产生的电压比均匀粘结的PVDF膜产生的电压高五倍，这表明无界的PVDF更加敏感。

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