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

A signal processing method of detecting and locating material degradation or micro-cracks using ultrasonic guided waves 一种利用超声导波检测和定位材料退化或微裂纹的信号处理方法

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775763

B. Wang, Hong Xu

引用次数: 0

Free axisymmetric vibrations of FGM circular plates FGM圆板的自由轴对称振动

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775846

Yun Wang, R. Xu, H. Ding

引用次数: 1

Study of micro cooling based on acoustic streaming 基于声流的微冷却研究

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775771

Hong-ming Sun, Qi Liu, Hang Guo, Tao Guo

引用次数: 2

Effects of different Sb addition on [(K0.44Na0.52) Li0.04](Nb0.9-XTa0.1Sbx)O3 lead-free piezoceramics 不同Sb添加量对[(K0.44Na0.52) Li0.04](Nb0.9-XTa0.1Sbx)O3无铅压电陶瓷的影响

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775777

Dao-li Wang, J. Qiu, K. Zhu, H. Ji, Shilong Xie

{"title":"Effects of different Sb addition on [(K0.44Na0.52) Li0.04](Nb0.9-XTa0.1Sbx)O3 lead-free piezoceramics","authors":"Dao-li Wang, J. Qiu, K. Zhu, H. Ji, Shilong Xie","doi":"10.1109/SPAWDA.2008.4775777","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775777","url":null,"abstract":"Lead-free piezoelectric (K0.44Na0.52Li0.04)(Nb0.9-xTa0.1Sbx)O3 ceramics were prepared by traditional electrical ceramic technique. The effects of different Sb doping on the microstructure, phase, dielectric and piezoelectric properties were studied. The results indicate that the multielement niobate ceramics with higher piezoelectric properties can be fabricated from different Sb doping of Sb3+ or Sb5+. But the higher density piezoceramics with the Sb3+ dopant was obtained, and less influenced by the compositions. In this system orthorhombic-tetragonal morphotropic phase boundary (MPB) composition range of 0.03< times <0.05 was revealed by the X-ray diffraction analysis, and the piezoelectric properties of the (K0.44Na0.52Li0.04)(Nb0.9-xTa0.1Sbx)O3 is the best near the MPB composition range, and are rather sensitive to the phase compositions: dopant of Sb2O3 with the value at x= 0.04, d33=248 pC/N, Pr=19.2 muC/cm2, Ec=16.2 kV/cm, Qm=31, epsivr=1254, kp=0.41;dopant of Sb2O5 with the value at x= 0.05, d33=253 pC/N, Pr=15.5 muC/cm2, Ec=14.2 kV/cm.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"30 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":"122956309","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

Frequency analysis of thickness-shear vibratiions of thin film bulk acoustic wave resonators 薄膜体声波谐振器厚度-剪切振动的频率分析

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775752

Ji Wang, Jian-song Liu, Jianke Du, Dejin Huang

引用次数: 3

Multi-parameter sensing in liquid using a lamb wave based microsensor 基于lamb波的微传感器在液体中的多参数传感

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775800

Feng Li, Yi-hui Wu, J. Manceau, F. Bastien

引用次数: 2

Propagation features about the characteristic wave of acoustic full waveform in cased boreholes 声波全波形特征波在套管井中的传播特征

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775742

Hong-bing Zhang, Zhen Qin, Chen-dong Fu, Hong-jian Wang, H. Tao, Ke‐xie Wang

{"title":"Propagation features about the characteristic wave of acoustic full waveform in cased boreholes","authors":"Hong-bing Zhang, Zhen Qin, Chen-dong Fu, Hong-jian Wang, H. Tao, Ke‐xie Wang","doi":"10.1109/SPAWDA.2008.4775742","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775742","url":null,"abstract":"Cementing quality directly influences exploitation of oil or gas layers in oil or water boreholes. Characteristic wave (or pseudo-Rayleigh wave) in acoustic full waveform can evaluate the cementing quality of the secondary interface in cased boreholes. Before evaluating the cementing quality of secondary interface, we must analyze bath propagation velocity and amplitude of the characteristic wave. To achieve this, we simulate the acoustic full waveform and 2-D spectrum (frequency-wavenumber spectrum) for various cementing quality of the secondary interface based on the real axis integration method, and analyze relation between bath velocity and amplitude of the characteristic wave and thickness of the water layer on the secondary interface. The simulating results for the waveform and 2-D spectrum of characteristic wave indicate that the velocity of characteristic wave is influenced by the velocity of bath the casing and cement annulus together and is small than that of cased wave. The velocity is increasing and up to the velocity of cased wave with the thickness of water layer. In efficient range of the thickness of water layer, the amplitude of characteristic wave is increasing with the thickness of water layer. Moreover, we validate the simulation results by comparing with experiment data in calibration pits. It is shown that the difference of amplitude or velocity for the characteristic wave can indicate the cementing quality of the secondary interface. These results are of great importance to build the standards of extracting the characteristic wave and criteria of evaluating the cementing quality of the secondary interface.","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":"129499885","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

Adaptive vibration control of cantilever honeycomb sandwich panel using multi-layer piezoelectric actuator 基于多层压电作动器的悬臂蜂窝夹层板自适应振动控制

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775798

Yajun Luo, Xi-nong Zhang

引用次数: 0

The vibration proof study of the periodical rod with the strengthened interfaces 带有强化界面的周期杆的抗振研究

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775832

Zhenlong Xu, Meng Cui, Chao Zhao, Xiao-bin Zang

{"title":"The vibration proof study of the periodical rod with the strengthened interfaces","authors":"Zhenlong Xu, Meng Cui, Chao Zhao, Xiao-bin Zang","doi":"10.1109/SPAWDA.2008.4775832","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775832","url":null,"abstract":"If two or more kinds of elastic materials are arranged periodically in 1D, 2D, or 3D, a phononic crystal is realized. Similar to the electromagnetic wave propagation in a photonic crystal, the phononic crystal also has the property of phononic band gap for the sound or mechanical wave. That is, certain frequency band of sound or mechanical wave cannot pass the phononic crystal. It is believed that the phononic crystal can be used as widely as photonic crystal. The Transfer Matrix Method, finite element method and experiment are used to study the vibration proof property of a rod like 1D phononic crystal. To improve the bound strength between different materials, we designed a new structure with covers at the joints. The computational results show that such a structure still has the band gap whose width is three times wider, and the frequency range of wave will be minimized. The work in the paper explores the engineering application of the functional phononic crystals, and prepares the theory and the experiment for the design and analysis of more complicate phononic band gap structures.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"148 11 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":"121600407","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

Measurement of piezoelectric material's surface acoustic wave electromechanical coupling cofficient by delay lines 延迟线测量压电材料表面声波机电耦合系数

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775847

Xiao-yang Chen, Z. Fan, Hui Zhang

{"title":"Measurement of piezoelectric material's surface acoustic wave electromechanical coupling cofficient by delay lines","authors":"Xiao-yang Chen, Z. Fan, Hui Zhang","doi":"10.1109/SPAWDA.2008.4775847","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775847","url":null,"abstract":"The surface acoustic wave electromechanical coupling coefficient Ks 2 of piezoelectric material expresses the energy exchange efficiency of surface acoustic wave and electrical field. It is also a significant parameter for development of piezoelectric material and surface acoustic wave devices design and fabrication. Two kinds pattern of double delay lines were designed. The first is a surface acoustic wave double delay lines with free surface, in order to calculate Vf. The second is a surface acoustic wave double delay lines with metallized surface, in order to calculate Vm. Both of the delay lines were fabricated on the same wafer, then sampling some devices for delay time measurement by Agilent E5062A vector network analyzer. The average of Vf and Vm were calculated respectively. The Ks 2 was calculated using above-mentioned formula. The test and calculation were completed with 128deg Y-X LiNbO3, 6deg Y-X LiNbO3, Y-Z LiNbO3 and X-112deg YLiTaO3, 36deg Y-X LiTaO3 respectively. The results accord with Sadao measure's results in the materials integration.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"16 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":"127727781","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