2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)最新文献_第5页

Design of a tri-axial micro piezoelectric accelerometer 三轴微型压电加速度计的设计

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829958

Rui-hua Han, Jian-yan Wang, Mahui Xu, Hang Guo

引用次数: 8

A study of interfacial property of composite based on the shear stress criterion with cyclic loading process 基于循环加载过程剪切应力准则的复合材料界面特性研究

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829973

Pengyu Pei, Wen-xue Chang, H. Qing, C. Gao

引用次数: 0

High-frequency analysis of longitudinal wave bands in tunable rod-type piezoelectric phononic crystals 可调谐棒型压电声子晶体纵波频带的高频分析

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829981

Yong-qiang Guo, Long-fei Li

引用次数: 0

Air-coupled transducer with a hollow glass microspheres filled epoxy resin matching layer 空气耦合换能器采用中空玻璃微球填充环氧树脂匹配层

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7830011

Qiao Wu, Qiu-ying Chen, Guoxuan Lian, Xiao-min Wang

引用次数: 0

Prediction of the skull's acoustic parameters in transcranial focused ultrasound based on neural network 基于神经网络的经颅聚焦超声颅骨声学参数预测

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829970

Xiang-da Wang, Nan-xing Li, Wei-jun Lin, C. Su

{"title":"Prediction of the skull's acoustic parameters in transcranial focused ultrasound based on neural network","authors":"Xiang-da Wang, Nan-xing Li, Wei-jun Lin, C. Su","doi":"10.1109/SPAWDA.2016.7829970","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7829970","url":null,"abstract":"In this paper, multilayer perceptron neural networks (MLP neural networks) were used to predict the monkey skull's acoustic parameters (density and sound velocity) for transcranial focused ultrasound (tcFUS) therapy based on the computed tomography (CT) of the monkey skull. Levenberg-Marquardt algorithm was applied for the training of the neural networks with 168 input learning materials. The predicted results of eight samples demonstrated the effectiveness of the proposed method for accurately predicting the monkey skull's acoustic parameters with the maximum absolute error and the maximum relative error for density of 0.0541 kg/m3 and 0.00355% respectively and for sound velocity of 0.167 m/s and 0.00542% respectively. Further comparisons of the two dimensional (2D) transcranial focused ultrasound simulations with the predicted and the hypothetically real acoustic parameters of the monkey skull showed that the maximum absolute error and the maximum relative error of the acoustic field were 2.3 × 10−4 and 0.00161% respectively. Additionally, at the main distribution area of the acoustic field, the relative error was smaller. All of the numerical analyses of the density error, sound velocity error and acoustic field error were responsible for supporting the proposed method suitable for precisely predicting the monkey skull's acoustic parameters.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"13 2 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":"128952750","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

Analytical and finite element analysis of a new tri-axial piezoelectric accelerometer 一种新型三轴压电加速度计的解析与有限元分析

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829959

Mahui Xu, Jian-yan Wang, Rui-hua Han, Hui Zhou, Hang Guo

引用次数: 5

Research on the decoupling method of structure strain measurement based on PVDF sensors array 基于PVDF传感器阵列的结构应变测量解耦方法研究

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7830041

Ling-jie Li, Dong Li, Wen-hao Wang, Jing Han

引用次数: 4

Numerical study of 3-D anisotropic piezoelectric materials by boundary element method based on a new green function 基于新格林函数的三维各向异性压电材料边界元数值研究

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829987

J. Lei, Sheng-wei Liu, Pengbo Sun, Longtao Xie

引用次数: 1

Experimental evaluation of blocking effect on emboli in the aorta ascendens by using phased array ultrasound 相控阵超声对主动脉上升段栓塞阻断作用的实验评价

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829969

Zhen Zhang, K. An, M. Tang, Yazhu Chen, Jing-feng Bai

{"title":"Experimental evaluation of blocking effect on emboli in the aorta ascendens by using phased array ultrasound","authors":"Zhen Zhang, K. An, M. Tang, Yazhu Chen, Jing-feng Bai","doi":"10.1109/SPAWDA.2016.7829969","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7829969","url":null,"abstract":"Emboli generated in cardiac surgery can result in many postoperative neurological complications. There are many methods to reduce the amount of emboli or to block them. Nevertheless, many of methods have limitation. In this study, ultrasonic radiation force generated by phased array ultrasound is used to block emboli and the blocking effect is evaluated. We do vivo experiment on eight pigs (40kg). After opening thorax, we put ultrasound transducer between ascending aorta and brachiocephalic artery. The man-made emboli are injected in the left auricle 8 times on each pig, 4 times with ultrasound transducers off and 4 times with ultrasound transducers on. When emboli flow to ascending aorta, ultrasonic radiation force will act on emboli and block some of them from flowing into brachiocephalic artery. And emboli flowing into the right common carotid artery would be detected by PHILIPS CX50. At the end of the experiment, the sonicated tissue is cut for histopathology test. The results of vivo experiment demonstrate the feasibility and effect of blocking in the evaluation.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"12 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":"128366031","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

SH wave propagation along a periodic grating surface with grooves in a magneto-electro-elastic substrate 在磁-电弹性衬底中，SH波沿带凹槽的周期光栅表面传播

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI: 10.1109/SPAWDA.2016.7829992

T. Ge, Y. Pang, W. Feng, Chuanzeng Zhang

{"title":"SH wave propagation along a periodic grating surface with grooves in a magneto-electro-elastic substrate","authors":"T. Ge, Y. Pang, W. Feng, Chuanzeng Zhang","doi":"10.1109/SPAWDA.2016.7829992","DOIUrl":"https://doi.org/10.1109/SPAWDA.2016.7829992","url":null,"abstract":"This paper investigates the shear horizontal wave (SH wave) propagation along the periodic grating surface with grooves in a magneto-electro-elastic (MEE) substrate. The theoretical derivation is given for an arbitrary surface profile. Based on the Bloch-Floquet theorem and by using the Taylor-Mclaurin's series as well as the orthogonality condition of the wave modes, the mechanical, electric and magnetic boundary conditions at the profile surface are first transformed into the equivalent boundary conditions at the reference surface, and then further converted into an infinite set of linear homogeneous equations, whose determinant determines the dispersion relation. In the numerical examples, rectangular grooves are considered and the coupled-mode approximation is applied for truncating the infinite series. Numerical examples are presented for a magneto-electro-elastic (80% PZT4 and 20% CoFe2O4) composite. The results show that a band-gap occurs at the resonance frequency. With the increase of the wave-number, both the frequency and the wave velocity are reduced.","PeriodicalId":243839,"journal":{"name":"2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"115 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":"116913660","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