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

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The research on ambient noise of Arabian Sea 阿拉伯海环境噪声的研究
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7830005
Lei Sun, Qi Li, Fei Gao
{"title":"The research on ambient noise of Arabian Sea","authors":"Lei Sun, Qi Li, Fei Gao","doi":"10.1109/SPAWDA.2016.7830005","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7830005","url":null,"abstract":"The Arabian Sea is an important shipping channel. The frequency and spatial variation characteristics of medium and low frequency ambient noise in this area are studied by analyzing underwater acoustic buoy data. In this area, the shipping noise is the major noise source. The mean noise spectrum of each month is asymmetric \"W\" type among 10 ∼ 1000 Hz. Noise level decreases gradually from 10 Hz to 15.9 Hz, and increases from 20 Hz to 40 Hz. The spectral peak occurs among 40 ∼ 63.5 Hz. Noise level decreases from 63.5 Hz to 127 Hz, and varies little between 127 Hz and 1000 Hz. In the depth range of 75 ∼ 450 m, the vertical variation of 50.4 Hz noise is the largest. The noise grows substantially in the range of 75 ∼ 250 m, and changes less in the range of 250 ∼ 450 m.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"7 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":"116826026","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 matching layer design of borehole wall ultrasonic imaging logging transducer 井壁超声成像测井换能器匹配层设计
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7830017
Lin Fu, Yongchun Gao, De-lin Wu
{"title":"The matching layer design of borehole wall ultrasonic imaging logging transducer","authors":"Lin Fu, Yongchun Gao, De-lin Wu","doi":"10.1109/SPAWDA.2016.7830017","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7830017","url":null,"abstract":"In this paper, the finite element method is used to investigate the influence of matching layer on the center frequency and the frequency bandwidth when the borehole wall ultrasonic imaging logging transducer operates in the mud. Our numerical results show that the characteristic impedance and the thickness of the matching layer influence the resonance frequency and the harmonic peak. With the increase of the characteristic impedance, the first order thickness mode resonant frequency reduces while the second order increases, which makes the valley deeper and deeper on the curve of conductance. When the characteristic impedance reaches a certain value, the center frequency and −3dB relative bandwidth steeply change. With the increase of the thickness of the matching layer would lower the first and second order thickness mode resonant frequency, the −3dB relative bandwidth increases at first then decreases that leaves the maximum. The value range of the characteristic impedance and the thickness of the matching layer is obtained for a certain frequency bandwidth. This work can be used to lower the manufacture difficulty and increase the range of matching layer material choice.","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":"126185735","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
Analysis on performance of an infrasound piezoelectric hydrophone 次声压电水听器性能分析
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7830012
Hao Chen, Ya-jun Zheng, Hongping Hu, Gui-fen Fan, Wen-zhong Lv
{"title":"Analysis on performance of an infrasound piezoelectric hydrophone","authors":"Hao Chen, Ya-jun Zheng, Hongping Hu, Gui-fen Fan, Wen-zhong Lv","doi":"10.1109/SPAWDA.2016.7830012","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7830012","url":null,"abstract":"Two theoretical models of infrasound piezoelectric hydrophone (IPH) are proposed to meet the requirements of high sensitivity and low frequency hydrophone. The IPH has a laminated structure by using piezoelectric plates with polarization along thickness. Two connection forms of piezoelectric plates, in series and in parallel, are taken into consideration. The effect of structural parameters on the detection performance is investigated to improve sensitivity of the IPH to detect infrasound signal. The structural parameters are optimized to obtain high sensitivity and wide bandwidth with the minimum cost. The theoretical results are in good agreement with the ANSYS simulation. The results are helpful to analyze and design IPH.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"53 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":"129366357","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
Analysis of P-SV wave bands in one-dimensional piezoelectric/piezomagnetic phononic crystals 一维压电/压磁声子晶体的P-SV波段分析
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829997
Wei Wang, Yong-qiang Guo, Qiang Li
{"title":"Analysis of P-SV wave bands in one-dimensional piezoelectric/piezomagnetic phononic crystals","authors":"Wei Wang, Yong-qiang Guo, Qiang Li","doi":"10.1109/SPAWDA.2016.7829997","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7829997","url":null,"abstract":"On the basis of two-dimensional (2D) elasticity of piezoelectric and piezomagnetic materials and the state space formalism, the method of reverberation-ray matrix (MRRM) combined with the Floquet-Bloch theorem as an alternative method are proposed for the analysis of P-SV wave bands in 1D phononic crystals made of transversely isotropic piezoelectric and piezomagnetic materials. Numerical examples are given to validate our proposed method and to show the general properties of P-SV waves in 1D piezoelectric-piezomagnetic phononic crystals. It is concluded that our proposed MRRM is uniform in formulation and suitable for both low- and high-frequency analysis.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"58 3 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":"130743806","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
Research on modeling method of winding tension system for gravure printing machine 凹印机卷绕张力系统建模方法研究
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829967
Mingyue Shao, Jimei Wu, Y. Wang, Kai Fang, Xuxia Guo
{"title":"Research on modeling method of winding tension system for gravure printing machine","authors":"Mingyue Shao, Jimei Wu, Y. Wang, Kai Fang, Xuxia Guo","doi":"10.1109/SPAWDA.2016.7829967","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7829967","url":null,"abstract":"The tension control technology of unit-type gravure printing machine is very important. The constant printing tension is the key factor to ensure the overprinting quality. So the research on modeling theory and control technology of control system becomes an important problem to restrict the technology development of unit-type gravure printing machine. In this paper, the winding tension system of Shaanxi Beiren FR400ELS unit type of gravure printing machine is taken as the research object, according to the characteristics of gravure press tension system of multi variable, nonlinear and strong coupling, the nonlinear coupling model of winding tension system is established by the coupling method. Based on the working mechanism the subsystem of tension control system, the mathematical models of the two cylinders, swing roller and the winding roller mechanism are established. The dynamic equation of the winding tension system in torque mode is deduced. It provides a theoretical basis for the further study of the tension control of gravure press.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"24 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":"124948512","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: 5
Measurement of acoustic velocity and attenuation of electrorheological fluids 电流变流体的声速和衰减测量
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829978
Xiao-yu Wang, Ning-wei Ma, W. Hao-dong, Hao Wang, Ya-ying Hong, Chuanxi Qin, De Zhang
{"title":"Measurement of acoustic velocity and attenuation of electrorheological fluids","authors":"Xiao-yu Wang, Ning-wei Ma, W. Hao-dong, Hao Wang, Ya-ying Hong, Chuanxi Qin, De Zhang","doi":"10.1109/SPAWDA.2016.7829978","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7829978","url":null,"abstract":"Electrorheological fluid (ERF) is a smart functional material which can transpose from liquid-like state to solid-like state under the action of an electric field, along with this process, the physical properties of the material will be changed such as apparent viscosity, acoustic attenuation and acoustic impendence. In this paper, three kinds of electrode surface morphology are chosen to vary the acoustic parameters of ERF systems and the leaky current when the longitudinal wave propagates parallel to the electric field. Through the analysis of the transformation laws, an optimum ERF application system for actual requirements could be easily found.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"36 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":"131514625","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
Free vibrations of finite quartz crystal cylinders with the Rayleigh-Ritz method 有限石英晶体圆柱自由振动的瑞利-里兹方法
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7830018
Ji Wang, Peng Hu, Bin Huang, S. Zhgoon, Ju-lian Shen, M. Chao, T. Ma, Jianke Du
{"title":"Free vibrations of finite quartz crystal cylinders with the Rayleigh-Ritz method","authors":"Ji Wang, Peng Hu, Bin Huang, S. Zhgoon, Ju-lian Shen, M. Chao, T. Ma, Jianke Du","doi":"10.1109/SPAWDA.2016.7830018","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7830018","url":null,"abstract":"We have extended the calculation procedure to cylindrical samples of anisotropic crystals for RUSpec measurements. The deformation is expressed with Chebyshev polynomials and the Rayleigh-Ritz method is used. We concentrated on anisotropic materials which can be more complicated for the formulation of vibration frequencies. The formulation is angular dependent with cylindrical coordinates. The calculation and experiment are carried out with quartz crystal samples and we found the results are accurate with frequencies and eventually obtained elastic constants which are in good agreement with known data. It is proven that the Rayleigh-Ritz method based on the deformation in Chebyshev polynomials offers simple and accurate solutions for vibration frequencies and mode shapes. With the known algorithms for matching elastic constants based on the measurement, we can obtain accurate elastic constants of anisotropic materials with a relatively simple procedure and test samples.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"56 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":"132742142","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
Numerical simulation of microseismic wavefields with moment-tensor sources 矩张量震源微地震波场数值模拟
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7830019
Lei Li, Hao Chen, Xiuming Wang
{"title":"Numerical simulation of microseismic wavefields with moment-tensor sources","authors":"Lei Li, Hao Chen, Xiuming Wang","doi":"10.1109/SPAWDA.2016.7830019","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7830019","url":null,"abstract":"Microseismic monitoring has been a key technology in the exploitation of unconventional reservoirs. Numerical simulation of various types of microseismic sources is the foundation for source location and source mechanism inversion. In this paper, equations of equivalent body forces with stress components and particle velocity components are derived, then they are included in the finite difference method (FDM) to simulate moment-tensor sources. The microseismic wavefields of different moment-tensor sources in three-dimensional isotropic media and transversely isotropic media with a vertical symmetry axis (VTI) are simulated and analyzed. Through the forward modeling of surface star-array monitoring, the feasibility of source mechanism inversion with P-wave first motion for surface microseismic monitoring has been preliminarily demonstrated.","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":"114630804","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
Dynamic responses of piezoelectric inertia friction motors with different friction models 不同摩擦模式下压电惯性摩擦电机的动态响应
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7830040
Ya-hui Zhao, L. Han, Rui Zhang, C. Pan, Liandong Yu
{"title":"Dynamic responses of piezoelectric inertia friction motors with different friction models","authors":"Ya-hui Zhao, L. Han, Rui Zhang, C. Pan, Liandong Yu","doi":"10.1109/SPAWDA.2016.7830040","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7830040","url":null,"abstract":"This paper presents the dynamic characteristics of the piezoelectric inertia friction motors with the Coulomb and Karnopp friction models. Working principles and kinematics models of the motors with the friction drive mechanism and inertia drive mechanism are introduced. From numerical simulations, motion responses of the two types of motors with the two friction models are obtained. It is shown that the static frictional force plays an important role in the stick-slip working condition for the friction drive mechanism, which means the Karnopp model would be more acceptable. For the inertia drive mechanism, the results of two models are almost the same in the stick-slip and slip-slip conditions.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"20 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114100669","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
Automatic biasing circuit for driving piezoelectric bimorph actuators safely and efficiently 安全高效驱动压电双晶片执行器的自动偏置电路
2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829996
Jian Chen, Yongbin Liu, Yang Ye, Qiaosheng Pan, Z. Feng
{"title":"Automatic biasing circuit for driving piezoelectric bimorph actuators safely and efficiently","authors":"Jian Chen, Yongbin Liu, Yang Ye, Qiaosheng Pan, Z. Feng","doi":"10.1109/SPAWDA.2016.7829996","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7829996","url":null,"abstract":"This paper proposes a simple circuit configuration for driving piezoelectric bimorph actuators in a high efficient way but not depolarizing the piezoceramics. Different from generating the bias voltages via some direct voltage converters, here two bias voltages are obtained from the driving voltage itself directly through a simple circuit. The values of the bias voltages can be adjusted from zero to the maximum value or minimum value of the driving voltage. A parallel bimorph can be actuated by applying the bias voltages to its top and bottom electrodes and the alternating voltage to the intermediate electrode. Experiments show that this method is effective when the actuating frequency should be high enough so that the bias voltages vary small.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"67 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":"115144996","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
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