Piezo health monitoring of adhesive joints

粘合接头的压电健康监测

• 批准号: 259409916
• 负责人: Professor Dr.-Ing. Wilfried Becker
• 金额: --
• 依托单位: Fachgebiet Strukturmechanik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/259409916?language=en
• 关键词: Piezo; health; monitoring; adhesive; joints

The aim of the project is to model the dynamic time harmonic behaviour of piezoelastic smart single lap structure and to obtain the uncoupled system of ordinary differential equations describing the piezo-electrical effects on the 1D response of a single lap structure. The following key factors will be taken into account: (a) the influence of the thicknesses of the adherends; (b) the interface delamination and elastic-brittle debond length; (c) influence of electric field; (d) dynamic time harmonic load and frequency intervals. The novelty of the proposed work lies in the fields of applied mechanics and composite materials: (a) a new system of uncoupled differential equations will be worked out for the 1D analysis of the hygrothermalpiezoelastic steady state behaviour of the bi-material structure; (b) Application to different smart devices in electronic industries with prescribed geometrical and mechanical and piezoelectric properties will be done. The appearance of the debond interfacial length will be a new result for this problem. The parametric analysis of the structure response and debond length including geometry, mechanical, piezo-electric characteristics and frequencies will be performed and commented. Some recommendations and conclusions will be done.

该项目的目的是建立压电弹性智能单搭接结构的动态时谐行为模型，并获得描述压电效应对单搭接结构一维响应的非耦合常微分方程组。将考虑以下关键因素：（a）被粘物厚度的影响;（B）界面分层和弹脆性脱粘长度;（c）电场的影响;（d）动态时谐载荷和频率间隔。所提出的工作的新奇在于应用力学和复合材料领域：（a）一个新的系统的解耦微分方程将制定出一维分析的湿热压电弹性稳态行为的双材料结构;（B）应用到不同的智能设备在电子工业与规定的几何和机械和压电性能将完成。脱粘界面长度的出现将是这一问题的一个新结果。将进行结构响应和脱粘长度的参数分析，包括几何、机械、压电特性和频率，并进行评论。并提出了一些建议和结论。

项目成果

Interfacial Debonding of a Piezoelastic Bi-Material Structure Applicable for Wind Rotor Blades

适用于风力发电机叶片的压电弹性双材料结构的界面脱粘

• DOI: 10.1080/15376494.2013.864433
• 发表时间: 2014
• 期刊: Mechanics of Advanced Materials and Structures
• 影响因子: 2.8
• 作者: J. Ivanova;V. Valeva;T. Petrova;W. Becker
• 通讯作者: W. Becker