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

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Experimental study on friction braking deceleration system based on ultrasonic motor 基于超声电机的摩擦制动减速系统实验研究
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7830027
Hai-peng Chen, Chao Chen, Chun-sheng Zhao
{"title":"Experimental study on friction braking deceleration system based on ultrasonic motor","authors":"Hai-peng Chen, Chao Chen, Chun-sheng Zhao","doi":"10.1109/SPAWDA.2016.7830027","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7830027","url":null,"abstract":"In this paper, a set of friction braking deceleration system is designed based on the ultrasonic motor. Because of the fast response and high accuracy, the system can realize the fast and accurate change of the speed, and achieve the stepless control of the speed. First, the structure of the friction braking deceleration system is designed, and the speed of a rotating disk is precisely controlled by the ultrasonic motor. Then, the mechanical model of the system is established, and the effects of various variables on the speed of the system are analyzed. Finally, the maximum braking moment and braking stroke are obtained by experiments.","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":"114183604","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
Thickness-extensional trapped energy vibration of ZnO thin film bulk acoustic wave filters ZnO薄膜体声波滤波器的厚度扩展俘获能振动
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829948
Zinan Zhao, Z. Qian, Bin Wang
{"title":"Thickness-extensional trapped energy vibration of ZnO thin film bulk acoustic wave filters","authors":"Zinan Zhao, Z. Qian, Bin Wang","doi":"10.1109/SPAWDA.2016.7829948","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7829948","url":null,"abstract":"Thickness-extensional vibration of a rectangular piezoelectric thin film filter symmetrically covered with two driving electrodes was studied in this paper. The Tiersten and Stevens scalar equation was employed. The Ritz method based on the variational formulation constructed in our previous work was used with trigonometric series as basis functions. Free vibration modes and corresponding resonant frequencies were obtained, which shows that the modes can separate into symmetric modes and anti-symmetric modes for this symmetric structure. Trapped modes with vibration mainly under the top electrode regions were illustrated. The six corner-type regions of the filter neglected by Tiersten and Stevens for simplicity were considered in our analysis. Results show that their approximation may lead to an inaccuracy ranging from dozens to hundreds of ppm for the fundamental symmetric modes, which is severe to filter design and operation.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"64 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":"115720565","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
Extended displacement discontinuity method for analysis of cracks in 2D thermopiezoelectric media 二维热电介质裂纹分析的扩展位移不连续法
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829968
Yan-peng Yuan, Xue-cheng Han, YiBo Pan, M. Zhao, GuangTao Xu, C. Fan
{"title":"Extended displacement discontinuity method for analysis of cracks in 2D thermopiezoelectric media","authors":"Yan-peng Yuan, Xue-cheng Han, YiBo Pan, M. Zhao, GuangTao Xu, C. Fan","doi":"10.1109/SPAWDA.2016.7829968","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7829968","url":null,"abstract":"Based on the operator theory, the general solutions of the extended displacements and stresses in two-dimensional thermopiezoelectric media are expressed in terms of a potential function. By introducing the Fourier transform, the fundamental solutions for the unit point extended displacement discontinuities are derived. The extended displacement discontinuity boundary integral equation method is developed and used to analyze the singularities of near-crack tip fields, and the extended intensity factors are obtained in terms of the extended displacement discontinuities across the crack faces.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"78 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":"116364174","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
Topological imaging in layered plate by guided waves 层状板的导波拓扑成像
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829952
Chao Zhang, Shou-guo Yan, Bi-xing Zhang, Wen-han Lv
{"title":"Topological imaging in layered plate by guided waves","authors":"Chao Zhang, Shou-guo Yan, Bi-xing Zhang, Wen-han Lv","doi":"10.1109/SPAWDA.2016.7829952","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7829952","url":null,"abstract":"The defect imaging by guided waves in layered plate is always an attractive project in non-destructive testing. The aim of this paper is to study the topological imaging theory and to determine whether it is possible to give the locations of all the defects in layered plate. A two-layered plate consist of aluminum and steel is considered. First, the formulas of the topological gradient are deduced theoretically. It is proved that the topological gradient is just a function in space domain and could indicate the defects' locations at the extreme value point. Then, according to the method of the topological imaging, the solutions of two situations are required, the forward problem and the adjoint problem, respectively. The model building and propagation of guided waves are all simulated in finite element software ANSYS. It is found that all the defects are located precisely at the topological image, which suggests that topological imaging can be an efficient method to obtain all the defects' locations in layered plate.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"442 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":"122787725","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
The frequency equation of thickness-shear vibrations of SC-cut quartz crystal plates SC 切割石英晶体板厚度剪切振动的频率方程
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829994
Shao-yun Wang, R. Wu, Shih-Yung Pao, Liang-meng Zhang, T. Ma, Jianke Du, Ji Wang
{"title":"The frequency equation of thickness-shear vibrations of SC-cut quartz crystal plates","authors":"Shao-yun Wang, R. Wu, Shih-Yung Pao, Liang-meng Zhang, T. Ma, Jianke Du, Ji Wang","doi":"10.1109/SPAWDA.2016.7829994","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7829994","url":null,"abstract":"The thickness-shear vibrations of a quartz crystal plate serve as the functioning mode of a resonator with strong couplings to many other modes of vibrations, which can affect the frequency and mode shape, consequently the resonator properties. For applications, it is always desired to have pure thickness-shear vibrations that only exist in an infinite plate. With the three-dimensional equations of elasticity in Cartesian coordinates, boundary conditions are approximated and the frequency equation of the thickness-shear mode is given in terms of materials constants and plate parameters. This relation shows that the thickness-shear frequency can be determined with known parameters of plates. The frequency equation then is compared with the frequency spectra from the Mindlin plate equations for the determination of some key coefficients. This is an extension of our earlier study on the frequency equation of AT-cut quartz crystal plates and it will be used in the design of SC-cut quartz crystal resonators of rectangular shape.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"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":"128275039","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 high-frequency power flow in planar framed structures 平面框架结构高频潮流分析
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7830024
Chaorong Hua, Yong-qiang Guo
{"title":"Analysis of high-frequency power flow in planar framed structures","authors":"Chaorong Hua, Yong-qiang Guo","doi":"10.1109/SPAWDA.2016.7830024","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7830024","url":null,"abstract":"Using the high-order Love rod theory and Timoshenko beam theory to model the axial and bending waves in structural members, this paper extends the method of reverberation-ray matrix (MRRM) for the analysis of high-frequency power flow in planar framed structures. The analytical formulation without involving exponentially growing functions is derived, from which the power flow at any cross-section or joint can be calculated numerically. The derivation of the formulation indicates that the MRRM is an analytical method has advantage of uniformity. It is applicable to high-frequency analysis because high-order rod, beam theories are used, and the exponentially growing functions are avoided from the formulation.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"10 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":"127440744","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
Numerical modeling and vibration control of transducer in ultrasonically assisted machining 超声辅助加工中换能器的数值建模与振动控制
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7830006
Z. Long, J. Zou, Shuang Zhao, Wen-dong Sun, Zhenya Sun
{"title":"Numerical modeling and vibration control of transducer in ultrasonically assisted machining","authors":"Z. Long, J. Zou, Shuang Zhao, Wen-dong Sun, Zhenya Sun","doi":"10.1109/SPAWDA.2016.7830006","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7830006","url":null,"abstract":"Ultrasonic assisted machining has been applied in machining brittle and hard material. The critical problem of ultrasonic assisted machining is to get a proper adaptive controller of the ultrasonic vibration. In this paper, a numerical vibration model is established by a mass-damper-elastic component. The loading effect on dynamics of ultrasonic transducer is investigated. The transfer function of transducer is obtained and simulation calculation model is carried out in Matlab. The effects of different damper and elastic component on frequency characteristic of ultrasonic transducer are found. The PID algorithm and the H® algorithm for vibration control are established and simulated in the Matlab Simulink, and proves both PID algorithm and Hoo algorithm can achieve the accurate and fast controlling results. Finally, some experiments are carried out to verify the simulation calculation.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"25 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":"132010660","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: 3
Vibration control in phnonoic piezoelectric with negative capacitance shunting circuit 用负电容并联电路控制声学压电振动
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7830038
Yiwei Tang, Yang Dou, Shu-Yu Lin
{"title":"Vibration control in phnonoic piezoelectric with negative capacitance shunting circuit","authors":"Yiwei Tang, Yang Dou, Shu-Yu Lin","doi":"10.1109/SPAWDA.2016.7830038","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7830038","url":null,"abstract":"Periodic arrays of shunted piezoelectric patches are employed to control the propagation of elastic waves in phononic beams. Each piezo-patch is connected to a single resistance-inductance-negative capacitance shunting circuit. The eigen value equation of the phononic piezoelectric beam is deduced by combining the piezoelectric effect of the piezoelectric patch with the mechanical vibration. Two main differences between the negative capacitance shunt networks and traditional circuits are found. (1)Negative capacitance shunt networks can change the widths and locations of locally resonant band gaps. (2) when the negative capacitance is close to inherent capacitance, the noise reduction is remarkable. Commercial finite element software COMSOL Multiphysic5.2 is used to simulate the vibration modes of the phononic piezoelectric beam.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"205 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":"132164144","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
Lamb wave scattering by a pair of surface-breaking inclined cracks in a plate 板中一对表面破碎的斜裂纹对兰姆波的散射
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7830015
Liyun Cao, Yanlong Xu, Zhichun Yang
{"title":"Lamb wave scattering by a pair of surface-breaking inclined cracks in a plate","authors":"Liyun Cao, Yanlong Xu, Zhichun Yang","doi":"10.1109/SPAWDA.2016.7830015","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7830015","url":null,"abstract":"Lamb wave scattering in an infinite, isotropic, homogeneous and linear elastic plate which contains a pair of surface-breaking inclined notch is evaluated. An inclined crack can be approached by vanishing the width of the inclined notch. The scattering of Lamb waves from geometric discontinuities involves all these wave modes which contain a finite number of propagating modes having real wave-numbers, a finite number of non-propagating modes having imaginary wave-numbers and an infinite number of in-homogeneous modes having complex wave numbers in order to satisfy the boundary conditions. The scattering field is expanded in terms of complex Lamb wave modes with unknown amplitudes. The complex mode expansion and vector projection (CMEP) method is used to deduce the solving process about these unknown amplitudes. We discuss the influences of the different length of the symmetric and asymmetric crack on the amplitudes of lamb wave scattering fields respectively. Results provide theoretical guidance for Structural Health Monitoring (SHM) using the lamb wave generation devices.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"266 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":"132469822","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
Research on MRE control propagation of acoustic waves in phononic crystal 声子晶体中多磁共振控制声波传播的研究
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7830036
Min Zhang, Jianke Du, Ji Wang
{"title":"Research on MRE control propagation of acoustic waves in phononic crystal","authors":"Min Zhang, Jianke Du, Ji Wang","doi":"10.1109/SPAWDA.2016.7830036","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7830036","url":null,"abstract":"In this article, acoustic waves in a phononic crystal which consists of MRE and PMMA periodic structure is studied. At the experimental stage, the bandgap of the phononic crystal designed by ourselves is recorded under different magnetic fields measured of Gauss meter. LMS is used to send, receive and process the experimental data. Finite element method is used to analyze the band gap of the acoustic waves in phononic crystal and the results are verified by experiments. The propagation of acoustic waves can be affected by the MRE whose storage modulus influenced by the magnetic field, which means, the band gap can be tuned by changing the magnetic field intensity.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"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":"130406206","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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