Application of electroactive polymer actuator materials in layered polymer structures
Abstract
The purpose of this research was to investigate the possibility of using electroactive polymer (EAP) materials to form actuators in layered polymer structures. Layered polymer structures can be incorporated into current applications such as hydraulic hose, hydraulic seals, and tires in order to monitor and correct the structure behavior. Design characteristics and requirements of o-ring hydraulic seals in particular were considered in the current research. Both a theoretical model and flat actuators were studied. Seven different materials were tested for use in the seal design, while considering electroactive behavior and sealing requirements. Several methods of preparing effective test samples were explored, along with the design of material stretchers. Testing included material property testing, which found that 3M™ VHB 4905 consistently has an absolute maximum stretch ratio of 6.8:1. In-plane forces were modeled using the Maxwell strain theory. Blocked force testing over a voltage sweep from 2500-5000V was conducted using two methods, a normal force and a parallel force test. From this, the VHB produced a maximum force of 0.245N. Additionally, movement of different pattern electrodes and active areas was observed. It was concluded that based on observation FKM was the best performing polymer currently used in o-ring production.
Degree
M.S.E.
Advisors
Krutz, Purdue University.
Subject Area
Engineering|Agricultural engineering
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