发布求助
文献互助 智能选刊 最新文献

2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)最新文献

筛选
英文 中文
Acoustic Levitation Characteristics of Hexagon Ultrasonic Arrays and Their Manipulate Methods 六边形超声阵列的声悬浮特性及其操纵方法
2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-11-01 DOI: 10.1109/SPAWDA48812.2019.9019249
Jiong-jiong Hu, Ying Yang, Jianmin Qiu, Wenxiang Yu
{"title":"Acoustic Levitation Characteristics of Hexagon Ultrasonic Arrays and Their Manipulate Methods","authors":"Jiong-jiong Hu, Ying Yang, Jianmin Qiu, Wenxiang Yu","doi":"10.1109/SPAWDA48812.2019.9019249","DOIUrl":"https://doi.org/10.1109/SPAWDA48812.2019.9019249","url":null,"abstract":"Base on the acoustic levitation technology, concept of contactless transport could be achieved by assembling transducersarray which charged with spatiotemporal modulation of the acoustic field. Our research started with hexagonal-headed ultrasonic transducer design, which was modified by FEM methods to achieve desired amplitude and frequency. A seven sourced hexagonal acoustic array prototype is set to verify the simulation predicted model. Prototype transducers are tested by two-dimensional Doppler vibration system (PSV-300F-B, Polytec co) and precision impedance analyzer (Agilent 9294A), relevant dynamic characteristic parameters are obtained. We verified the suspension and rotation control of the disc by the transducer array through experiments.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134458365","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
An Analysis of in-Plane Free Vibrations of Combinedcurved and Periodic Beams with Rayleigh-Ritzmethod 用瑞利-里兹法分析弯曲与周期组合梁的面内自由振动
2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-11-01 DOI: 10.1109/SPAWDA48812.2019.9019241
Shu-dong Ding, Yangyang Zhang, Longtao Xie, A. Zhang, Jianke Du, Ji Wang
{"title":"An Analysis of in-Plane Free Vibrations of Combinedcurved and Periodic Beams with Rayleigh-Ritzmethod","authors":"Shu-dong Ding, Yangyang Zhang, Longtao Xie, A. Zhang, Jianke Du, Ji Wang","doi":"10.1109/SPAWDA48812.2019.9019241","DOIUrl":"https://doi.org/10.1109/SPAWDA48812.2019.9019241","url":null,"abstract":"The curved and periodic beams are frequently used nowadays as essential structural and functional elements with many processes to produce including the popular 3D printing technology.As part of the effort in the analysis of curved and periodic beams, we have studied some special cases of beams with both Euler-Bernoulli and Timoshenko theories.The Rayleigh-Ritz method is used along with extra constraints at each joint, and the analysis now have the combinations of beams considered. By allowing the constraints to be realistic with the actual joint, the accurate frequencies of the combined beam structures are obtained.By further extension of the analytical procedure of curved and periodic beams, we can use the Rayleigh-Ritz method for the analysis of structures of combined beam elements for the evaluation of dynamic properties to satisfy design and application requirements.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133303689","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
Numrical Simulation of Nonlinear Focused Ultrasound 非线性聚焦超声的数值模拟
2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-11-01 DOI: 10.1109/SPAWDA48812.2019.9019225
De-lin Wu, Lei Yao, Shen-ping Gao, Yudi Pan, Xiao-bo Wang, Lan Gao, Xing-yan Yu
{"title":"Numrical Simulation of Nonlinear Focused Ultrasound","authors":"De-lin Wu, Lei Yao, Shen-ping Gao, Yudi Pan, Xiao-bo Wang, Lan Gao, Xing-yan Yu","doi":"10.1109/SPAWDA48812.2019.9019225","DOIUrl":"https://doi.org/10.1109/SPAWDA48812.2019.9019225","url":null,"abstract":"Numerical simulation is employed to characterize the sound field of high intensity focused ultrasound, whose results agree well with the analytical results. The sound field in nonlinear case seems to be much more complicated compared with that in linear case. The first three harmonics are extracted from the distorted wave by the zero-phase band-pass filter. It is demonstrated that the amplitude distribution of fundamental wave change little while that of the second and third harmonics vary a lot, as the source pressure increases. And the relative phase almost keep the same in the focal region. It can be concluded that numerical simulation is of great importance in predicting the nonlinear focused sound field at high sound pressure levels.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129562202","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
Study on the Variation Law of Sensitivity of Hydrophone Under the Condition of Acoustic Baffle 隔声条件下水听器灵敏度变化规律研究
2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-11-01 DOI: 10.1109/SPAWDA48812.2019.9019294
Tian-ji Zhao
{"title":"Study on the Variation Law of Sensitivity of Hydrophone Under the Condition of Acoustic Baffle","authors":"Tian-ji Zhao","doi":"10.1109/SPAWDA48812.2019.9019294","DOIUrl":"https://doi.org/10.1109/SPAWDA48812.2019.9019294","url":null,"abstract":"Aiming at the influence of anti-acoustic baffle on the acoustic characteristics of hydrophone, the sound field model of hydrophone under the influence of anti-acoustic baffle is established by using finite element software, and the sensitivity variation law is analyzed. The simulation results show that the anti-acoustic baffle and the hydrophone can be placed at 45°, and the former can increase the sensitivity of the latter by 6dB in a certain frequency range. This frequency range varies with the change in the anti-sound coefficient of the baffle and the distance between the hydrophone and the baffle. The research results have guiding significance for designing high-sensitivity hydrophones in the future.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115409569","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
Temperature Controlled Self-Folding Design Using Thermo-Sensitive Hydrogel Pnipam 利用热敏水凝胶设计温控自折叠
2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-11-01 DOI: 10.1109/SPAWDA48812.2019.9019269
Qian Wu, C. Gao, Yan Shi
{"title":"Temperature Controlled Self-Folding Design Using Thermo-Sensitive Hydrogel Pnipam","authors":"Qian Wu, C. Gao, Yan Shi","doi":"10.1109/SPAWDA48812.2019.9019269","DOIUrl":"https://doi.org/10.1109/SPAWDA48812.2019.9019269","url":null,"abstract":"PNIPAM, a typical thermo-sensitive hydrogel, possesses the ability to swell significantly under its lower critical solution temperature (LCST), offering a novel way to assembly 3D film structures. To clarify the mechanism of the assembly process, we apply PNIPAM to thin rectangular bilayers with another hydrophobic polymer polycaprolactone (PCL), which can turn into self-bending curved bridges in 25 °C aqueous environment. This simple bilayer geometry makes it possible from 2D to 3D automatically and can be applied to thermally responsive actuation of micro-devices. Then we proposed a self-folding table-like structure which is thermally responsive. Moreover, the finite element analysis (FEA) and experiments are employed to validate the assembly process. The design concepts and simulation techniques may serve as the guidelines for the thermal driven assembly design.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126100413","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
Effect of Dynamic Compressive Load on Piezoelectric Properties of Lead Zirconate Titanate Ceramics 动态压缩载荷对锆钛酸铅陶瓷压电性能的影响
2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-11-01 DOI: 10.1109/SPAWDA48812.2019.9019220
Teng Wang, Wen-jie Cheng, W. Xue, Fan Jiang, Yi-Han Hu, Jiang-ying Chen
{"title":"Effect of Dynamic Compressive Load on Piezoelectric Properties of Lead Zirconate Titanate Ceramics","authors":"Teng Wang, Wen-jie Cheng, W. Xue, Fan Jiang, Yi-Han Hu, Jiang-ying Chen","doi":"10.1109/SPAWDA48812.2019.9019220","DOIUrl":"https://doi.org/10.1109/SPAWDA48812.2019.9019220","url":null,"abstract":"The piezoelectric properties and domain switching phenomena of piezoelectric ceramics under different strain rate impact loading were experimentally studied by using the Split Hopkins Pressure Bar measuring device. The variation of piezoelectric parameters were analyzed, such as piezoelectric strain constant, resonant frequency, electromechanical coupling coefficient, dielectric loss, dielectric constant and quality factor. The research shows that piezoelectric ceramics have obvious strain rate effect; with the increase of strain rate, the piezoelectric strain constant, resonant frequency, electromechanical coupling coefficient, dielectric loss and quality factor have a linear change in the normalized range, but there is a threshold value. That is, when the strain rate exceeds this value, the corresponding parameters will be abruptly changed, and the internal domain inversion of the sample is obviously intensified.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128566251","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
Study on Mechanical-Electrical Response Characteristics of 2-2 Cement-Based Piezoelectric Composites 2-2水泥基压电复合材料的机电响应特性研究
2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-11-01 DOI: 10.1109/SPAWDA48812.2019.9019250
Pengju Feng, Wen-jie Cheng, Teng Wang, Jiang-ying Chen
{"title":"Study on Mechanical-Electrical Response Characteristics of 2-2 Cement-Based Piezoelectric Composites","authors":"Pengju Feng, Wen-jie Cheng, Teng Wang, Jiang-ying Chen","doi":"10.1109/SPAWDA48812.2019.9019250","DOIUrl":"https://doi.org/10.1109/SPAWDA48812.2019.9019250","url":null,"abstract":"2-2 cement-based piezoelectric composites were prepared by cutting-casting method. The effects of different loading amplitudes and frequencies on the mechanical-electrical response characteristics of 2-2 cement-based piezoelectric composites were studied by a material testing machine (MTS810). The research shows that the samples have better frequency response under quasi-static loading; the output electrical signal has a good linear relationship with the loading amplitude. The effect of different loading strain rates on the mechanical-electrical response characteristics of 2-2 cement-based piezoelectric composites was studied by a split Hopkinson pressure bar (SHPB) test device. The present work shows that under single impact loading, with loading strain rate increasing, the output electric displacement increases accordingly. When the strain rate reaches 258s-1, the output electric displacement does not increase substantially and remains unchanged. Within a certain range, 2-2 cement-based piezoelectric composites have linear characteristics and frequency response characteristics, which provide an important reference for sensor fabrication.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"63 CN_suppl_1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128164742","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
Fem Simulation of 1-3 Piezoelectric Composites Based on Relaxor Ferroelectric Single Crystals and Their Properties as Underwater Transducers 基于弛豫铁电单晶的1-3压电复合材料及其水下换能器性能的有限元模拟
2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-11-01 DOI: 10.1109/SPAWDA48812.2019.9019329
Wei Bai, Jia-rong Wang, Xin-ran Xu, Zhen-yu Zheng
{"title":"Fem Simulation of 1-3 Piezoelectric Composites Based on Relaxor Ferroelectric Single Crystals and Their Properties as Underwater Transducers","authors":"Wei Bai, Jia-rong Wang, Xin-ran Xu, Zhen-yu Zheng","doi":"10.1109/SPAWDA48812.2019.9019329","DOIUrl":"https://doi.org/10.1109/SPAWDA48812.2019.9019329","url":null,"abstract":"In this paper, the performances of 1-3 piezoelectric composites based on a single crystal ferroelectric PIN-PMN-PT as underwater projectors are simulated by finite element method. The harmonic vibration modes and transmitting voltage responses are investigated. The potential advantages and values of single crystal ferroelectrics based composite transducers are presented compared with PZT based composites. The basic principle of designing 1-3 piezoelectric composites for projectors is discussed.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127948750","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
Ultrasonic Phased Array Imaging Method Based On Multi - Scattering Model 基于多散射模型的超声相控阵成像方法
2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-11-01 DOI: 10.1109/SPAWDA48812.2019.9019323
Jianzu Gu, Bin Zhang, Rui-Xiang Su, Lei Qian, Rong Chen
{"title":"Ultrasonic Phased Array Imaging Method Based On Multi - Scattering Model","authors":"Jianzu Gu, Bin Zhang, Rui-Xiang Su, Lei Qian, Rong Chen","doi":"10.1109/SPAWDA48812.2019.9019323","DOIUrl":"https://doi.org/10.1109/SPAWDA48812.2019.9019323","url":null,"abstract":"With the development of ultrasonic technology, ultrasonic wave plays an increasingly important role in the field of nondestructive testing. Among all kinds of ultrasonic nondestructive testing technologie, ultrasonic phased array is widely used because of its high accuracy and flexibility. However, due to the existence of rayleigh limit, ordinary ultrasonic phased array technology cannot recover the space frequency greater than 2K, so it is impossible to achieve the resolution less than half of the wavelengthof the super-resolution. In this paper, we introduce a method to realize super resolution imaging in multi-band phased array.In this method, the damage is detected by multiple phased arrays, and the received signals are processed by specific algorithms to obtain super-resolution imaging. The signal is excited by M exciter and then received by N receiver. The total signal can form an M*N matrix. After singular valuedecomposition of the collected signal matrix,T significant eigenvalues can be obtained. The T significant eigenvalues represent the number of injuries. The singular vector after singular value decomposition contains the information of noise space. The number of eigenvalues in the signal space is the number of damage. Using the randomness of noise subspace, special algorithm can be used to restore the spatial frequency greater than 2K to achieve super-resolution imaging.The more elements in this method, the more accurate and complicated it is. As long as the smallest value of M and N is greater than the number of injuries, each injury can be successfully distinguished under super resolution. Therefore, the appropriate number of matrix elements should be selected for different damages.","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132152787","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
SPAWDA 2019 TOC 亚太经济合作组织 2019 年贸易与合作会议
2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-11-01 DOI: 10.1109/spawda48812.2019.9019257
{"title":"SPAWDA 2019 TOC","authors":"","doi":"10.1109/spawda48812.2019.9019257","DOIUrl":"https://doi.org/10.1109/spawda48812.2019.9019257","url":null,"abstract":"","PeriodicalId":208819,"journal":{"name":"2019 14th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133969035","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信