Health assessment of smart patches on hygrothermalpiezoelectric lightweight structures

湿热压电轻质结构智能贴片的健康评估

• 批准号: 277522030
• 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: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/277522030?language=en
• 关键词: Health; assessment; smart; patches; hygrothermalpiezoelectric

The aim of the proposed research work is to quantify the effect of electrical and static load, temperature and moisture as well on the interface delamination of a basic structural layer with a patch (disposed up on the layer) as a part of energy industrial devices, or to consider the health assessment of a smart lightweight structure with repairing function in automotive and aircraft industries or a basic element in solar panels. Moreover the considered configuration will allow the selection of a criterion for the clear connection between electric gradient and interface debond length. On this basis it makes reason to choose the optimal geometry, material and physical properties and loading by means of a genetic algorithm to estimate its reliability.The novelty of the project is in development of an efficient package of knowledge including (a) mechanical models, analytical solutions and their interpretations; (b) creating the Fortran programs for the calculation of the interface debond lengths for the health assessment of the smart lightweight structure, consisting in a hygrothermalpiezoelectric layer with one patch under combined mechanical and physical load or using Mathematica, MATCAD, etc.; (c) a possible criterion for detecting interface debond length, (d) optimal choice of geometry and material characteristics on the basis of genetic algorithm in regard of the reliability of the structure considered.

拟议的研究工作的目的是量化电气和静态负载，温度和水分的影响，以及对基本结构层的界面分层，其贴片（在层上放置）作为能源工业设备的一部分，或者考虑对智能轻量级结构的健康评估，并在汽车和飞机工业工业中修复智能功能或基本元件中的智能轻量级结构。此外，考虑的配置将允许选择一个标准，以进行电动梯度和接口DEBOND长度之间的清晰连接。在此基础上，它有理由选择最佳的几何形状，材料和物理性质，并通过遗传算法进行估计其可靠性。该项目的新颖性是在开发有效的知识包装方面，包括（a）机械模型，分析解决方案及其解释； （b）创建用于计算界面删除长度的fortran程序，以评估智能轻质结构的健康评估，该结构由一个湿透的机械和物理载荷或使用Mathematica，Matcad等组成的湿热Zoelectric层组成； （c）可能在遗传算法基于所考虑的结构的可靠性方面，检测界面删除长度的标准，（d）几何和材料特征的最佳选择。