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2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications最新文献

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Shear horizontal surface waves in a piezoelectric-piezomagnetic layered half-space with an imperfect interface 具有不完美界面的压电-压电层状半空间中的剪切水平表面波
2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775819
Xing Zhao, Yong-mao Zhao, Jinxi Liu
{"title":"Shear horizontal surface waves in a piezoelectric-piezomagnetic layered half-space with an imperfect interface","authors":"Xing Zhao, Yong-mao Zhao, Jinxi Liu","doi":"10.1109/SPAWDA.2008.4775819","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775819","url":null,"abstract":"This paper, investigates the dispersion characteristics of shear horizontal (SH) surface waves propagating in a piezoelectric (PE) layer imperfectly bonded on a piezomagnetic (PM) half-space. Both the layer and half-space possess the hexagonal symmetry. The so-called shear-lag model is used to describe the interfacial property. The surface of the PE layer is traction-free, electrically closed and magnetically open. The explicit dispersion equation is derived. The phase velocities are calculated to show the influences of the interfacial imperfection and the material properties of PE layers on the dispersive characteristics. The results show that: (1) The imperfect bonding lowers the propagation velocity; (2) The larger the B-G wave velocity of a piezoelectric layer, the larger the phase velocity of SH surface wave propagating in the corresponding layered half-space.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128861663","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
Study on ultrasonic/sonic driller/corer for deep space exploration 深空探测用超声/声波钻机/井盖的研究
2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775804
Chao Chen, Weiqing Huang, Jun-jie Guo, Chun-sheng Zhao
{"title":"Study on ultrasonic/sonic driller/corer for deep space exploration","authors":"Chao Chen, Weiqing Huang, Jun-jie Guo, Chun-sheng Zhao","doi":"10.1109/SPAWDA.2008.4775804","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775804","url":null,"abstract":"A novel Ultrasonic/sonic Driller/Corer (USDC) has been developed for deep space exploration. This low axial load is required and few impact forces are produced for the USDC to sample rocks, which results in the important advantage of low energy dissipation. Based on inverse piezoelectric effect, the ultrasonic vibration is induced for the transducer of the USDC. The ultrasonic/sonic vibration energy conversion and coupling exists between the ultrasonic transducer and drill stem through the smart design of free mass. In this way the drill stem with the considerable sonic frequency can sample the rocks. In this paper the finite element model of the USDC is built and the dynamic analysis is conducted. The prototype is manufactured and the experimental results show that the USDC can dig into the rocks without extra axial forces.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124402317","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: 2
Realization of technique for the length measurement of rock bolts by ultrasonic waves 超声波测锚杆长度技术的实现
2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775815
Bo-feng Wang, Xi-hua Long, Xing-guo Qiu
{"title":"Realization of technique for the length measurement of rock bolts by ultrasonic waves","authors":"Bo-feng Wang, Xi-hua Long, Xing-guo Qiu","doi":"10.1109/SPAWDA.2008.4775815","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775815","url":null,"abstract":"A kind of rock bolts length measuring system using techniques of embedded system and ultrasonic waves is proposed. It can realize controlling for circuit of ultrasonic transmitting, circuit of ultrasonic wave receiving, electrical source, circuit of A/D transforming, keyboard, LCD, loudhailer etc by program, and analyzing signal of reflecting ultrasonic waves. The system's MCU is LPC2210 in the series of ARM7 and make uC/OS-II as operating system. The paper pays more attention to the theory of ultrasonic measuring and scheme of system for realizing.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114537002","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
Design of a flat-panel loudspeaker with giant magnetostrictive exciters 带超磁致伸缩激振器的平板扬声器设计
2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775845
Jianjun Zhou, Yu-sheng Wang, Xia Wang, Aihua Meng, Y. Pan
{"title":"Design of a flat-panel loudspeaker with giant magnetostrictive exciters","authors":"Jianjun Zhou, Yu-sheng Wang, Xia Wang, Aihua Meng, Y. Pan","doi":"10.1109/SPAWDA.2008.4775845","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775845","url":null,"abstract":"A novel design has been undertaken to introduce solid resonant motion actuation in flat panel loudspeakers. The actuation of the vibration is obtained using direct magnetostrictive actuators or amplified magnetostrictive actuators with flexure hinges. Instead of one or two exciters, the proposed panel speakers have several micro-transducers vibrating coherently to produce sound and to form a Distributed Mode Loudspeaker (DML) sound system. The whole body vibration of the panel will eliminate the poor bass and impulse response associated with the present flat panel speakers. A matrix of miniature magnetostrictive actuators having magnet-coil assembly along with simulation using commercial simulation packages such as ANSYS and LSPCAD software explores the possibilities of using micro-actuators array for loudspeaker application. The paper discusses in details of the giant magenetostrictive exciter design, placement of the exciters, and choice of the panel materials as well as the test of several flat-panel loudspeaker prototypes.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116432288","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: 2
Bending of laminated piezoelectric cantilever actuator under constant voltage 层压压电悬臂动器在恒压下的弯曲
2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775780
Dejin Huang, H. Ding, Wei-qiu Chen
{"title":"Bending of laminated piezoelectric cantilever actuator under constant voltage","authors":"Dejin Huang, H. Ding, Wei-qiu Chen","doi":"10.1109/SPAWDA.2008.4775780","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775780","url":null,"abstract":"The laminated piezoelectric cantilever actuators under constant voltage are investigated. Based on partial differential equations for the plane problem of piezoelectric materials, the stress function and electric displacement function are assumed to be undetermined polynomials, which can be acquired through successive integrations. The analytical solutions are then obtained, with the integral constants completely determined from the boundary conditions. Comparisons of the present analytical solutions with beam theory, finite element method and experiments indicate that the analytical solutions are effective and exact, while certain deviation of the beam theory can be found.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123523160","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
Investigation of the piezoelectric properties of semiconducting nanostructures 半导体纳米结构的压电性能研究
2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775816
B. Peng, Ling Wu, Hao-wen Luo, Wenqing Xu, E. Horacio
{"title":"Investigation of the piezoelectric properties of semiconducting nanostructures","authors":"B. Peng, Ling Wu, Hao-wen Luo, Wenqing Xu, E. Horacio","doi":"10.1109/SPAWDA.2008.4775816","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775816","url":null,"abstract":"In this paper, the piezoelectric properties of semiconducting nano structures have been investigated. The piezoelectric effect can be characterized via a nano-scale material testing system that utilizing microelectromechanical systems technology. The coefficients were measured by applying a voltage (field) and measuring the induced elongation (strain). It can be readily seen that the piezoelectric effects in nanostructures are generally non-linear and the coefficient is much higher than that for bulk.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122078527","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
The simulation of active control of the shape and vibration of piezoelectric, Magneto-electro-elastic and FGM structures 压电、磁电弹性和FGM结构的形状和振动主动控制仿真
2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775839
S. Zheng, Yan Feng, F. Dai
{"title":"The simulation of active control of the shape and vibration of piezoelectric, Magneto-electro-elastic and FGM structures","authors":"S. Zheng, Yan Feng, F. Dai","doi":"10.1109/SPAWDA.2008.4775839","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775839","url":null,"abstract":"This paper presents an investigation for analysis of the multi-field coupling problems of piezoelectric, Magneto-electro-elastic and functionally graded materials. A novel solid shell element formulation is developed by using the assumed natural strain and enhanced assumed strain method, the number of internal degree of freedoms is remarkably reduced and the computational efficiency is improved. The electrical degree of freedoms and expense of data reading, storage, computation are greatly reduced due to a new interpolation function of electric potential. This element can be used as solid element and can also be used to model thin curved shell structures. Even for a thin plate/shell with very small thickness to length ratio, the predictions of this element are satisfactory.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117189659","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
Fast mixing of digital droplets under uni-direction acoustic field 单向声场下数字液滴的快速混合
2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775746
Jingchen Fei, An-liang Zhang
{"title":"Fast mixing of digital droplets under uni-direction acoustic field","authors":"Jingchen Fei, An-liang Zhang","doi":"10.1109/SPAWDA.2008.4775746","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775746","url":null,"abstract":"A micro-mixer for mixing digital droplets fabricated on 128degY cut X LiNbO3 is reported, which is composed of one interdigital transducers and one reflector for generating unidirectional acoustic field. After a RF signal amplified by a power amplifier was added on an interdigital transducer, surface acoustic wave was excided by the interdigital transducer, and was conversed into longitudinal acoustic wave and to drive a digital droplet to merge with the other droplet quickly by their rapid molecular diffusion when the surface acoustic wave passed through the droplets. Mixing experiments of 3ul NaCl solution-2ul red dye solution and 3ul glycerine-2ul red dye solution show that their mixing velocities can improve 35 folds and 50 folds respectively under unidirectional acoustic fields. The research is valuable for its simplicity in process and easy integration into lab-on-a-chip.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129467183","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
Analysis of functionally graded piezoelectric plate of arbitrary gradient distribution in cylindrical bending 任意梯度分布的功能梯度压电板在圆柱弯曲中的分析
2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775792
Wu-xiang Liu, Z. Zhong
{"title":"Analysis of functionally graded piezoelectric plate of arbitrary gradient distribution in cylindrical bending","authors":"Wu-xiang Liu, Z. Zhong","doi":"10.1109/SPAWDA.2008.4775792","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775792","url":null,"abstract":"This paper studies an orthotropic functionally graded piezoelectric plate with arbitrary distributed material properties in cylindrical bending, which is simply supported and grounded on its two opposite edges. The state equations of the functionally graded piezoelectric material are obtained based on the state space approach and a Peano-Baker series solution is obtained for the coupling electroelastic fields of the functionally graded piezoelectric plate subjected to mechanical and electric loads on its upper and lower surfaces. The influence of different material properties on the structural response of the plate is studied using the obtained solutions.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128517538","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: 1
Motion analysis of a point on the stator of a wobbling type ultrasonic motor based on Euler angles 基于欧拉角的摆动型超声电机定子上某点的运动分析
2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775788
Zhong-ying Wang, Qun-ying Jiao, Yu Chen, Wen-rui Cao
{"title":"Motion analysis of a point on the stator of a wobbling type ultrasonic motor based on Euler angles","authors":"Zhong-ying Wang, Qun-ying Jiao, Yu Chen, Wen-rui Cao","doi":"10.1109/SPAWDA.2008.4775788","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775788","url":null,"abstract":"Different from the conventional electromagnetic motor, the rotor of an ultrasonic motor is driven by motion of stator, therefore, study on the motion law of the stator is the foundation of dynamic characteristics of the ultrasonic motor. Circular wobbling motion of the stator head of a wobbling type ultrasonic motor was simplified as revolution of a rigid body about a fixed point by considering the motion and structural characteristics of the stator. The motion equation of a point on the top surface of the stator was deduced by using the theories of Euler angle and coordinate conversion. Furthermore, the calculation formula of the angle between the motion surface and the top surface of the stator was obtained. The results show that the conclusion of this method is consistent with that of traditional methods. In addition, the method laid a theoretical basis for steady-state analysis and transient analysis of similar ultrasonic motors.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127549285","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: 1
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