2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications最新文献_第5页

The simulation of acoustic field in the design of ultrasound driving device for site nano-drug delivery 声场模拟在纳米药物原位传递超声驱动装置设计中的应用

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775806

Long Meng, Chunxiang Jiang, Hai-rong Zheng

引用次数: 0

Study on polarization state in depolarized fiber optic gyroscope 去偏振光纤陀螺仪偏振态的研究

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775743

Lihui Wang, Feng Sun, Q. Yu, Gang Liu

{"title":"Study on polarization state in depolarized fiber optic gyroscope","authors":"Lihui Wang, Feng Sun, Q. Yu, Gang Liu","doi":"10.1109/SPAWDA.2008.4775743","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775743","url":null,"abstract":"The instability of polarization state in interference fiber optic gyroscope (FOG) restricts the precision and stability of FOG. There are two methods to increase FOG's precision and stability, that is, to maintain or eliminate the state of polarization in fiber. Using Lyot fiber depolarizer not only reduces the effects of the states of polarization on the performance of FOG, but decreases the cost of FOG to a large extent, which is quite suit for the medium and low precision FOG. This article analyzes the principle of Lyot fiber depolarizer and the interchangeable character of input and output ports, deduces the structural parameters of Lyot fiber depolarizer and discusses the effects of parameters on the depolarizer's performance with Jones matrix. What's more, polarization transformation and polarization errors in depolarized fiber optic gyroscope (DFOG) are discussed in detail. Experimental result shows that the depolarizer we designed is very effective to reduce the drift of FOG, and depolarized fiber optic gyroscope is suit for fields using medium precision FOG. The analysis provides academic guidance to depolarizer used in depolarized fiber gyroscope or other fiber optic sensors.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"22 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":"127335858","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

Stress analysis of a functional gradient material plate with a circular hole under symmetric loads 带圆孔功能梯度材料板在对称荷载作用下的应力分析

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775851

Wen-tao Chen, C. Gao, Quanquan Yang

{"title":"Stress analysis of a functional gradient material plate with a circular hole under symmetric loads","authors":"Wen-tao Chen, C. Gao, Quanquan Yang","doi":"10.1109/SPAWDA.2008.4775851","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775851","url":null,"abstract":"This paper is to study the stress distribution of a functional gradient material plate with a circular hole under symmetric load. With using the method of homogenized layer and neglecting the thermal effects on the structure, the solution for the stress distribution of the functional gradient material plate having radial arbitrary elastic modulus is derived based on the known results of a single thick layer cylinder structure, and the continuous conditions of stress and displacement along the interfaces. When the number of the layer N rarr infin, one can obtain an exact solution. But, since the N is taken as a finite number in general cases, so only an approximate solution can be presented. As an example, a functional gradient material plate with different radial elastic modulus is selected for numerical calculation. It is shown that the stress is greatly reduced as the radial elastic modulus increased, and moreover the stress level varies when the radial elastic modulus increased in different ways. Thus, it can be concluded that the stress around the circular hole in the functional gradient material plate can be effectively reduced by choosing the proper change ways of the radial elastic modulus.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"52 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":"134181756","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

Three-dimensional analysis of functionally graded piezothemoelastic annular plate 功能梯度压热弹性环形板的三维分析

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775794

Guan-shi Li, Z. Zhong, G. Nie

引用次数: 3

An efficient approach to optimize the vibration mode of ultrasonic motors 一种优化超声电机振动模式的有效方法

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775856

Hua Zhu, Jiantao Zhang, Chunsheng Zhao

引用次数: 0

Finite-difference simulation of rayleigh wave scattering at a surface crack with experimental verification 表面裂纹中瑞利波散射的有限差分模拟及实验验证

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775833

Chao Lu, Zai-dong Zhang

{"title":"Finite-difference simulation of rayleigh wave scattering at a surface crack with experimental verification","authors":"Chao Lu, Zai-dong Zhang","doi":"10.1109/SPAWDA.2008.4775833","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775833","url":null,"abstract":"This paper describes a three-dimension finite-difference method to simulate the interaction of surface acoustic waves with finite-size, surface-breaking, and semi-circular cracks in steel specimen. The simulation is used to predict time-domain history of field displacements vertical to the surface of the steel specimen. We focus on the behavior of the reflection and transmission coefficient of the Rayleigh waves from such cracks in the far field of the crack, when the crack depth is comparable to the wavelength of the interrogating surface wave. The theoretical, finite-difference, and experimental results presented are in very good agreement over the range were the crack depth is much smaller or much larger compared to the wavelength of the incident Rayleigh wave. In the transition regime, between these two limiting cases, only the finite-difference and experimental data show good agreement since the theoretical predictions are no longer applicable. Furthermore, based on the finite-difference simulation and the laser interferometric measurement, the transmission coefficient of the surface wave scattering from the small surface crack was presented.","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":"116297959","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

Design and analysis of a cylindrical ultrasonic motor using bending transducer 弯曲换能器圆柱形超声电机的设计与分析

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775785

Weishan Chen, Yingxiang Liu, Jun-kao Liu, S. Shi

{"title":"Design and analysis of a cylindrical ultrasonic motor using bending transducer","authors":"Weishan Chen, Yingxiang Liu, Jun-kao Liu, S. Shi","doi":"10.1109/SPAWDA.2008.4775785","DOIUrl":"https://doi.org/10.1109/SPAWDA.2008.4775785","url":null,"abstract":"A cylindrical ultrasonic motor using bending transducer was proposed in this paper. The stator components of proposed motor contain a cylinder and four bending transducers, and the four uniform bending transducers are set on the exterior surface of cylinder. The bending of transducers is excited by the longitudinal vibration of PZT ceramics. The four transducers are excited with two different groups of signal, and two bending vibrations are generated on the cylinder. When the amplitude of two bending vibrations is equal, and their phase difference on time and space is pi/2, a traveling wave is formed on the cylinder. Thus, an elliptical motion is achieved at the particle on the tooth. And the frictional force between rotor and stator is the driving force to realize the rotation motion of rotor. The PZT ceramics work with d33 mode, which have high electromechanical coupling efficiency and could improve the output characteristics. The working principle of proposed motor was analyzed. The cylinder and transducers were designed with FEM. The sensitive parameters of resonance frequency of transducer and cylinder were gained with modal analysis. The bending resonance frequency of transducers and cylinder were degenerated, and the motion trajectories of nodes on the teeth were analyzed. The result of transient analysis shows that the trajectory of node on the tooth is nearly an ellipse. The results of this paper could be useful in the development of this new type of motor.","PeriodicalId":190941,"journal":{"name":"2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications","volume":"127 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":"114660027","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

Development of quartz tuning fork temperature sensors 石英音叉温度传感器的研制

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775829

Jun Xu, B. You, Xueqiong Zhao, Xin Li

引用次数: 2

A simple pre-stress estimating method of langevin transducers 一种简单的朗格万传感器预应力估计方法

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775801

B. Fu, Tinglong Li, T. Hemsel

引用次数: 2

Study of Love-mode immunosensors based on ZnO/36°YX-LiTaO3 structures 基于ZnO/36°YX-LiTaO3结构的Love-mode免疫传感器研究

2008 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2008-12-01 DOI: 10.1109/SPAWDA.2008.4775789

Feng-mei Zhou, Zhe Li, L. Fan, Xun Gong, Shu-Yi Zhang

引用次数: 0