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.

该项目的目的是对压电弹性智能单圈结构的动态时间谐波行为进行建模，并获得对单个膝盖结构1D响应的压电效果的普通微分方程的未耦合系统。将考虑以下关键因素：（a）粘附器厚度的影响； （b）界面分层和弹性 - 脆性剥离长度； （c）电场的影响； （d）动态时间谐波负载和频率间隔。拟议的工作的新颖性在于应用力学和复合材料的领域：（a）将制定一个新的未耦合微分方程的系统，以对双材料结构的Hygrethrotherpiezoalpiezoezo弹性稳态行为进行1D分析； （b）将在具有规定的几何和机械和压电特性的电子行业的不同智能设备中应用。剥离界面长度的外观将是此问题的新结果。将对结构响应和剥离长度进行参数分析，包括几何，机械，压电特性和频率。将得出一些建议和结论。

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