2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)最新文献_第10页

Characteristics of guided waves in a bar with rectangular cross-section 矩形截面棒材中导波的特性

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7830020

Zhi Li, Xiaoming Zhang

引用次数: 0

A Comsol analysis of vibrations of quartz crystal plates with Mindlin plate equations 用Mindlin板方程分析石英晶体板的振动

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829965

Lin Li, R. Wu, Bin Huang, J. Lou, T. Ma, Jianke Du, Dan Wu, Ji Wang

{"title":"A Comsol analysis of vibrations of quartz crystal plates with Mindlin plate equations","authors":"Lin Li, R. Wu, Bin Huang, J. Lou, T. Ma, Jianke Du, Dan Wu, Ji Wang","doi":"10.1109/SPAWDA.2016.7829965","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7829965","url":null,"abstract":"In the design and optimization of quartz crystal resonators, the finite element method has been adopted for the analysis of quartz crystal plates with complications for the vibration frequency and mode shapes. Further extension of such analysis can be made by using complex solutions to extract the electrical parameters of quartz crystal resonators because it is a typical electronic component in circuit applications. With Comsol which is widely used in industry and academic research, the Mindlin plate equations for the analysis of quartz crystal plates at thickness-shear mode are implemented for demonstration and validation purposes. To demonstrate the usefulness of Comsol in the vibration analysis of quartz crystal plates with coupled equations, we choose to utilize the first-order Mindlin plate equations and establish the analytical model with the input of differential equations in standard form as specified by Comsol. Then we found the equations can be processed and solved with the built-in solver of Comsol and results are reasonable and accurate. With the procedure and results presented in this study, it is clear that high frequency vibrations of quartz crystal resonators can be analyzed by the Mindlin plate equations and Comsol for accurate solutions needed in the optimization and design. The results are compared with analytical solutions and other FEM tools for accuracy. It is clear that the Mindlin plate can be conveniently used for the analysis, and results can be obtained quickly by taking advantage of Comsol.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114166544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Weight function for cracks in one-dimensional piezoelectric quasicrystals 一维压电准晶体裂纹的权函数

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829991

Di Wu, Liangliang Zhang, Yang Gao

引用次数: 0

High temperature piezoelectric single crystals: Recent developments 高温压电单晶:最新进展

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829944

F. Yu, Feifei Chen, Shuai Hou, He-wei Wang, Yi-an Wang, Shi-wei Tian, Chao Jiang, Yan-lu Li, Xiu-feng Cheng, Xian Zhao

{"title":"High temperature piezoelectric single crystals: Recent developments","authors":"F. Yu, Feifei Chen, Shuai Hou, He-wei Wang, Yi-an Wang, Shi-wei Tian, Chao Jiang, Yan-lu Li, Xiu-feng Cheng, Xian Zhao","doi":"10.1109/SPAWDA.2016.7829944","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7829944","url":null,"abstract":"High temperature piezoelectric materials serving at harsh environment without failure are desired for structural health monitoring and/or non destructive evaluation of the modern aerospace structures at elevated temperatures (above 600°C). In this report, different high temperature piezoelectric crystals, including the langasite (LGS) type crystals and GaPO4 in trigonal system, melilite type and fresnoite type crystals in tetragonal system, and oxyborate crystals in monoclinic system are surveyed, and their properties are compared. Among the LGS type piezoelectric crystals, the structural ordered trigonal Ca3TaGa3Si2O14 (CTGS) crystals as well as the Al substituted CTGS crystals shew relative low dielectric loss (<5%@600°C), high electromechanical coupling factor (12%∼18%@room temperature) and good temperature stability of piezoelectric properties up to 900°C, potential for usages in middle-high temperature range. Interestingly, the monoclinic RECa4O(BO3)3 (RECOB, Re: rare-earth elements) type crystal were found to own attractive dielectric, piezoelectric and electromechanical properties up to 1000°C, particularly, the YGdCOB crystals were determined to possess temperature independent behavior of piezoelectric properties (variations of piezoelectric d.26 <−5% over the tested temperature range), promising for ultrahigh temperature piezoelectric applications.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117113763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

A new method to transport gas molecules 一种输送气体分子的新方法

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7830009

Yu-shan Peng, Jun-hui Hu

引用次数: 0

The influence of Maxwell stress on the fracture mechanics of 2D piezoelectric materials based on the PS model 基于PS模型的Maxwell应力对二维压电材料断裂力学的影响

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829961

Yu-hao Li, L. Qi, C. Gao

{"title":"The influence of Maxwell stress on the fracture mechanics of 2D piezoelectric materials based on the PS model","authors":"Yu-hao Li, L. Qi, C. Gao","doi":"10.1109/SPAWDA.2016.7829961","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7829961","url":null,"abstract":"The present work studies the influence of Maxwell stress on a straight but non-linear polarization saturation (PS) crack in a 2D piezoelectric material under combined mechanical and electric loadings at infinity. The non-linear piezoelectric fracture mechanics model, which is the PS model, is adopted in this paper. It is assumed that the crack is electrically semi-permeable. Based on the Stroh's formalism and the dislocation modelling of a crack, we derive the relationships of the field intensity factors and the local J-integral to the strip zone, the applied mechanical and electric loadings. Numerical results are also presented to discuss the effects of Maxwell stress on the intensity factors of stresses, the electric displacement and the size of the electrically yielded zone. It is found that the Maxwell stress can relieve the crack growth under a given mechanical and electric loading, especially for the case of low mechanical loading and high electric loading applied at infinity. It is also shown that the normalized stress intensity factor increases with both the mechanical and electric loading.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"76 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116402193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Propagation of acoustic wave in one-dimensional phononic crystals with magnetorheological fluids 声波在含磁流变流体的一维声子晶体中的传播

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829995

Xiao-Lei Li, Jianke Du, Ji Wang

引用次数: 0

Propagation of SH waves in a functionally graded piezoelectric-piezomagnetic half-space by orthogonal polynomials method 用正交多项式法研究SH波在功能梯度压电-压电半空间中的传播

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7830023

Min Zhang, Jiangong Yu, Bo Zhang

引用次数: 1

Dynamic stress concentration factor around inclusion in anisotropic half-space with a semi-cylindrical canyon 半圆柱形峡谷各向异性半空间包裹体周围动应力集中系数

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829945

Yu Zhang, Jin Wang, Yu Wei, P. Yan, Zai-lin Yang

引用次数: 1

A new method for calculating the parametric array's sound field 一种计算参数阵列声场的新方法

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7830004

Zhong-zheng Li, L. Shi, Erzheng Fang

引用次数: 0