Experimental Electro-Mechanics of Dielectric Elastomers

介电弹性体的实验机电

• 批准号: 1333835
• 负责人: David Clarke
• 金额: $ 39.98万
• 依托单位: Harvard University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-08-01 至 2018-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1333835&HistoricalAwards=false
• 关键词: Experimental; Electro; Mechanics; Dielectric; Elastomers

The research objective of this award is to establish the inter-relationship between dielectric breakdown and electric-field induced deformation of elastomeric materials. Integral to the research objective will be quantifying the role of defects as well as electric-field induced mechanical localization produced by conducting fibers and electrode geometry. The approach will be largely experimental with direct measurements of the deformation fields produced by pre-straining and applied voltages for different fiber electrode arrangements and for a variety of device geometries. The observations will be compared with and complemented by modeling studies based on theories of nonlinear electro-mechanical coupling of deformable dielectrics. Together, these will be used to design and construct proof-of-concept electrically controlled devices capable of extreme strains.If successful, the benefits of this research will include simplified designs for utilizing dielectric elastomers in engineering applications including energy harvesting devices, linear actuators and displays. The project will also contribute to Harvard's existing outreach programs involving undergraduate research and local high-school outreach, other community outreach programs.

该奖项的研究目标是建立介电击穿与电场诱导弹性材料变形之间的关系。研究目标的积分将是量化缺陷的作用以及通过传导纤维和电极几何形状产生的电场诱导的机械定位。该方法将在很大程度上是实验性的，并直接测量了通过用于不同纤维电极排列和各种设备几何的不同纤维电极排列产生的变形场和施加电压产生的变形场。基于基于非线性电力介电介质的非线性电力耦合理论进行建模研究，将与观察结果进行比较和补充。共同将这些用于设计和构建能够具有极端应变的电气控制的概念验证。如果成功，这项研究的好处将包括用于在工程应用中利用介电弹性体的简化设计显示。 该项目还将为哈佛大学的现有外展计划做出贡献，涉及本科研究和当地高中外展活动，其他社区外展计划。