Characterization of Electric Fracture and Fatigue Properties of Advanced Piezoelectric Material Systems

先进压电材料系统的电断裂和疲劳性能表征

• 批准号: 14350048
• 负责人: SHINDO Yasuhide
• 金额: $ 10.82万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14350048/
• 关键词: Elasticity; Electric Facture Mechanics; Integral Transforms; Finite Element Analysis; Material Testing; Piezoelectric Ceramics; Electro-Elastic; Inelastic Interactions; Smart and Electronic Material Systems

In most of the applications of sensors and actuators in the field of smart structures and devices, piezoelectric ceramics are subjected to both high mechanical stresses and electric fields hence, it is important for reliability and durability to investigate the fracture and fatigue properties of piezoelectric ceramics and composites under electromechanical loading. In this research project, the electromechanical properties of advanced piezoelectric material systems are investigated. From the theoretical considerations and experimental data for piezoelectric material systems, the following results can be obtained :1. We analyze the electroelastic problems for cracked piezoelectric material systems. The effect of electric field on the fracture mechanics parameters (energy release rate, energy density factor, fatigue crack growth rate) is calculated. We also develop a finite element procedure which allows to compute the polarization switching near the crack tip, and discuss the nonlinear … More fracture properties of piezoelectric material systems.2. (1) We perform the indentation fracture, single-edge precracked-beam, and double torsion tests on piezoelectric ceramics, and discuss the electric fracture properties. We also employ the nonlinear finite element analyses to study the effect of localized polarization switching on the fracture mechanics parameters. (2) We investigate the electric fracture and polarization switching properties of piezoelectric ceramics utilizing the modified small punch technique.3. We perform an experimental and analytical study on the static and cyclic fatigue properties of piezoelectric ceramics under electromechanical loading, using three-point bending method.4. (1) We study the effect of applied voltage on the electroelastic field concentrations ahead of electrodes in piezoelectric actuators. (2) We examine the electromechanical response of piezoelectric bimorphs, and discuss the effects of do electric field and polarization switching on the bending properties. We also present the results on the nonlinear behavior due to domain wall motion for laminated and functionally graded piezoelectric actuators under ac electric field. Less

在智能结构和器件领域的传感器和执行器的应用中，压电陶瓷受到高的机械应力和电场的双重作用，因此，研究压电陶瓷和复合材料在机电载荷作用下的断裂和疲劳性能对可靠性和耐久性具有重要意义。在本研究项目中，我们研究了先进的压电材料体系的机电性能。从压电材料系统的理论考虑和实验数据可以得到以下结果：1.分析了含裂纹压电材料系统的电弹性问题。计算了电场对断裂力学参数(能量释放率、能量密度因子、疲劳裂纹扩展速率)的影响。我们还开发了一个有限元程序，可以计算裂纹尖端附近的极化转换，并讨论了非线性…压电材料体系的断裂性能更好。(1)对压电陶瓷进行了压痕断裂试验、单边预裂纹梁试验和双扭转试验，并对其电断裂特性进行了讨论。利用非线性有限元分析方法研究了局域极化转换对断裂力学参数的影响。(2)利用改进的小冲孔技术研究了压电陶瓷的电致断裂和极化转换特性。采用三点弯曲法对压电陶瓷在机电载荷作用下的静态疲劳和循环疲劳性能进行了实验和分析研究。(1)研究了外加电压对压电致动器电极前电弹场浓度的影响。(2)研究了压电双晶片的机电响应，讨论了DO电场和极化转换对其弯曲性能的影响。我们还给出了层合和功能梯度压电致动器在交变电场作用下磁化壁区运动引起的非线性行为的结果。较少

项目成果

Bending Behavior of Functionally Graded Piezoelectric Laminated Actuators under Electric Fields

电场下功能梯度压电叠层执行器的弯曲行为

• 发表时间: 2007
• 期刊: Key Engineering Materials 336/338
• 作者: 大宮正毅;篠崎明;井上裕嗣;岸本喜久雄;Y.Shindo;Y.Shindo;Y.Shindo
• 通讯作者: Y.Shindo

Three-Dimensional Electroelastic Analysis of Functionally Graded Piezoelectric Plate via State Vector Approach

通过状态向量法对功能梯度压电板进行三维电弹性分析

• 发表时间: 2006
• 期刊: ZAMM 86・8
• 作者: 呂中杰;田中皓一;西田政弘;Y. Shindo;Y. Shindo;Y.Shindo;Y.Shindo;S.Fang
• 通讯作者: S.Fang

Bending and polarization switching of piezoelectric laminated actuators under electromechanical loading

• DOI: 10.1016/j.compstruc.2004.08.025
• 发表时间: 2005-06
• 期刊: Computers & Structures
• 影响因子: 4.7
• 作者: F. Narita;Y. Shindo;K. Hayashi

Y.Shindo: "Evaluation of Electric Fracture Properties of Piezoelectric Ceramics Using Finite Element and Double Torsion Test Techniques"6th Mesomechanics 2004, International Conference on Multiscaling in Applied Science and Emerging Technologies. (発表予定).

Y. Shindo：“使用有限元和双扭转测试技术评估压电陶瓷的电断裂性能”，2004 年第 6 届细观力学，应用科学和新兴技术多尺度国际会议（待提交）。

Nonlinear Dynamic Bending and Domain Wall Motion in Functionally Graded Piezoelectric Actuators under AC Electric Fields: Simulation and Experiment

• DOI: 10.1299/jsmea.49.188
• 发表时间: 2006-04
• 期刊: Jsme International Journal Series A-solid Mechanics and Material Engineering
• 作者: Y. Shindo;F. Narita;M. Mikami;Fumitoshi Saito