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2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)最新文献

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A Simulation Design of Band1 Saw Duplexer Band1锯双工器的仿真设计
2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2022-10-11 DOI: 10.1109/SPAWDA56268.2022.10045939
Qiu-Qun Tong, Ya-li Zou, Yuan-Dong Gu
{"title":"A Simulation Design of Band1 Saw Duplexer","authors":"Qiu-Qun Tong, Ya-li Zou, Yuan-Dong Gu","doi":"10.1109/SPAWDA56268.2022.10045939","DOIUrl":"https://doi.org/10.1109/SPAWDA56268.2022.10045939","url":null,"abstract":"This paper describes the design and simulation of a small volume, low insertion loss, and high isolation Band1 SAW duplexer. Compared to mainstream Band1 SAW Duplexer, for example Murata SAYEY1G95HA0F0A, our simulation results show that the design enables a package size reduction of ~25%, with the length and width shortened by 200 microns respectively. The design has a similar 1.8dB insertion loss and a superior 60dB isolation. Exacerbation of internal electromagnetic coupling on the performance caused by the reduction of package size is successfully resolved with iterative optimization of the PCB layer and main circuit structure. This compact Band1 SAW duplexer design has the potential to meet the more and more stringent size requirement of radio frequency communication in future mobile devices.","PeriodicalId":387693,"journal":{"name":"2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126377339","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
A Modified Boundary Element Solution for Ultrasonic Guided Wave Mode-Conversion and Scattering in Curved Plates 曲面板中超声导波模式转换与散射的修正边界元解
2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2022-10-11 DOI: 10.1109/SPAWDA56268.2022.10045862
Yuheng Wei, Bin Wang, Z. Qian
{"title":"A Modified Boundary Element Solution for Ultrasonic Guided Wave Mode-Conversion and Scattering in Curved Plates","authors":"Yuheng Wei, Bin Wang, Z. Qian","doi":"10.1109/SPAWDA56268.2022.10045862","DOIUrl":"https://doi.org/10.1109/SPAWDA56268.2022.10045862","url":null,"abstract":"The ultrasonic guided wave is a very promising and effective tool in non-destructive evaluation (NDE) and structural health monitoring (SHM), especially for large-scale plate structures. The reflection and transmission coefficients as the incident wave propagates through the inspected region can help us locate and reconstruct the flaws. However, compared with straight plates, the guided wave propagation phenomenon becomes more complicated in curved plates due to mode conversion. Previously, the finite element, spectral element and semi-analytical finite element (SAFE) methods have been applied to solve the forward problem. However, they are generally time-consuming. This paper proposes a modified boundary element method (m-BEM) to simulate guided wave mode-conversion and scattering at curved parts of plate structures, which can reduce the mesh and computation cost while keeping accuracy. The method can work as theoretical basis and provide numerical data for studying the following inverse problems.","PeriodicalId":387693,"journal":{"name":"2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126442035","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
Optimization of the Air-Flow Induced Acoustic Excitation Parameters in Jet-Resonant Cavity of Piezoelectric Generator 压电发生器射流谐振腔中气流诱导声激励参数的优化
2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2022-10-11 DOI: 10.1109/SPAWDA56268.2022.10045993
Jianming Zhang, Shumin Xu, Hejuan Chen
{"title":"Optimization of the Air-Flow Induced Acoustic Excitation Parameters in Jet-Resonant Cavity of Piezoelectric Generator","authors":"Jianming Zhang, Shumin Xu, Hejuan Chen","doi":"10.1109/SPAWDA56268.2022.10045993","DOIUrl":"https://doi.org/10.1109/SPAWDA56268.2022.10045993","url":null,"abstract":"In order to improve the power generation performance of air-flow induced acoustic piezoelectric generator, the influence of structural parameters of air-flow induced acoustic excitation mechanism on acoustic vibration amplitude is analyzed by orthogonal experiment. The results show that the distance from the nozzle to the wedge has the greatest influence on the amplitude, followed by the length of the cavity and the annulus. The output power of the air-flow acoustic piezoelectric generator with optimized parameters is significantly improved and has a large power density.","PeriodicalId":387693,"journal":{"name":"2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127598649","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
Driver Power Design of Piezoelectric Vibrator Based on Single Phase Bridge Monopole SPWM Technology 基于单相桥式单极SPWM技术的压电激振器驱动电源设计
2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2022-10-11 DOI: 10.1109/SPAWDA56268.2022.10045874
Xiaoling Hu, Chao Chen, Cai Hu, Jing Ji
{"title":"Driver Power Design of Piezoelectric Vibrator Based on Single Phase Bridge Monopole SPWM Technology","authors":"Xiaoling Hu, Chao Chen, Cai Hu, Jing Ji","doi":"10.1109/SPAWDA56268.2022.10045874","DOIUrl":"https://doi.org/10.1109/SPAWDA56268.2022.10045874","url":null,"abstract":"The stability, carrying load ability and output bandwidth of the driving power have an important impact on the dynamic performance of the piezoelectric vibrator. Based on the unipolar SPWM control mode, a single-phase bridge switching power supply is proposed. The system is composed of a power drive circuit and digital control circuit. To achieve precise and controllable voltage output, the key setting strategy, frequency control strategy, voltage control strategy, and unipolar SPWM drive strategy are designed. The test results show that the measurement and LCD modules can accurately display the main parameters of the power supply. The analog output of the voltage waveform and the current waveform of the DAC module can truly reflect the actual state. It has the advantage of simplicity and convenience, and avoids the trouble of needing a special probe when measuring the actual voltage waveform.","PeriodicalId":387693,"journal":{"name":"2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117198812","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
Flexible Ultrasonic Sensor for Monitoring Blood Flow Velocity 用于监测血流速度的柔性超声传感器
2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2022-10-11 DOI: 10.1109/SPAWDA56268.2022.10045840
Xinyue Zhang, Fang Yang
{"title":"Flexible Ultrasonic Sensor for Monitoring Blood Flow Velocity","authors":"Xinyue Zhang, Fang Yang","doi":"10.1109/SPAWDA56268.2022.10045840","DOIUrl":"https://doi.org/10.1109/SPAWDA56268.2022.10045840","url":null,"abstract":"This short paper proposes a small wearable flexible ultrasonic sensor based on polyvinylidene fluoride (PVDF) to detect the blood flow velocity. Such system includes the structure of the sensor for transmitting ultrasound, signal receiving and digital signal processing. Through the processing and analysis of the received signal, the velocity of the simulated blood flow can be initially obtained. Therefore, the fabricated sensor could be used to realize real-time and continuous monitoring of the blood flow velocity.","PeriodicalId":387693,"journal":{"name":"2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"356 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122447340","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
Energy Conversion Technology of Gallium Nitride Rectifier Bridge for Air-Induced Acoustic Piezoelectric Generator 气致声压电发生器用氮化镓整流桥能量转换技术
2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2022-10-11 DOI: 10.1109/SPAWDA56268.2022.10045924
Yanqiu Shen, Zhipeng Li, Jinghao Li, Hejuan Chen
{"title":"Energy Conversion Technology of Gallium Nitride Rectifier Bridge for Air-Induced Acoustic Piezoelectric Generator","authors":"Yanqiu Shen, Zhipeng Li, Jinghao Li, Hejuan Chen","doi":"10.1109/SPAWDA56268.2022.10045924","DOIUrl":"https://doi.org/10.1109/SPAWDA56268.2022.10045924","url":null,"abstract":"In order to meet the power generation performance requirements of low-power power supplies and improve the energy collection efficiency of the new power supply airflow-induced acoustic piezoelectric generators, domestic GaN rectifier diodes are applied to low-power circuits, and the low dropout voltage of the airflow-induced acoustic piezoelectric generator power supply circuit has been developed. Gallium nitride (GaN) rectifier bridge, designed a low-dropout gallium nitride (GaN) rectifier bridge energy harvesting circuit. The static and dynamic experimental tests show that the domestic GaN rectification scheme can realize the dynamic rectification of the air-induced acoustic piezoelectric generator, with lower circuit loss, and can meet the domestic demand for low-power power supplies.","PeriodicalId":387693,"journal":{"name":"2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"213 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131618577","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 and Thermal Flux Distribution Around the Strip Flake Crack Under Heat Conduction 热传导作用下片状裂纹周围的温度和热流密度分布
2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2022-10-11 DOI: 10.1109/SPAWDA56268.2022.10045941
Qianqian Zhang, Hao Song, Cunfa Gao
{"title":"Temperature and Thermal Flux Distribution Around the Strip Flake Crack Under Heat Conduction","authors":"Qianqian Zhang, Hao Song, Cunfa Gao","doi":"10.1109/SPAWDA56268.2022.10045941","DOIUrl":"https://doi.org/10.1109/SPAWDA56268.2022.10045941","url":null,"abstract":"The temperature and thermal flux fields are one of the important problems in solid mechanics, especially when the material properties change with temperature, such as in the process of heat conduction. Using the generalized complex variable method, the problem with circular boundary obtained by conformal transformation have been discussed. However, it is not suitable for the model whose cross-sectional shape is invariable. In this paper, using semi-inverse method we solve the three-dimensional temperature-dependent heat conduction problem of strip flake crack whose cross-sectional shape is invariable. The temperature-thermal flux fields have been obtained. The results show that the thermal flux field of three-dimensional temperature dependent problem is the same as the classical result, while the temperature field is different from the classical result.","PeriodicalId":387693,"journal":{"name":"2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"37 13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123657650","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
Research on Signal Excitation Optimization in Lamb Wave Imaging Method Lamb波成像方法中信号激励优化研究
2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2022-10-11 DOI: 10.1109/SPAWDA56268.2022.10045898
Bingqian Li, Z. Wang, Xingyi Liu, Z. Xie, Huiru Jia, Yue Fei
{"title":"Research on Signal Excitation Optimization in Lamb Wave Imaging Method","authors":"Bingqian Li, Z. Wang, Xingyi Liu, Z. Xie, Huiru Jia, Yue Fei","doi":"10.1109/SPAWDA56268.2022.10045898","DOIUrl":"https://doi.org/10.1109/SPAWDA56268.2022.10045898","url":null,"abstract":"The plate structure is susceptible to damages such as cracks, spalling, and fatigue caused by external load impact, chemical corrosion and other effects. Aiming at the problem that ultrasonic Lamb waves have multi-modality and frequency dispersion effects during the propagation of plate structures, and the damage information is difficult to identify. The frequency-wavenumber(f-k) domain filtering method was adopted. By studying the numerical simulation model of the isotropic material plate in the f-k domain sub-modal imaging method, the comparison of driving performance based on 400kHz sine modulated five-peak wave signal and 250-550kHz bandwidth linear Chirp signal is studied. The results show that the damage reflection energy of the two modes in the Chirp signal band is stronger than the sinusoidal modulated five-peak wave signal, and the feasibility of the proposed signal for multi-damage detection is verified by comparing the wave field and time domain signals.","PeriodicalId":387693,"journal":{"name":"2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123487000","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
Influence of the Delamination Variation on the Diffuse Ultrasound in CFRPS 脱层变化对CFRPS弥散超声的影响
2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2022-10-11 DOI: 10.1109/SPAWDA56268.2022.10045958
Yuanjun Zhang, Qi Zhu, Duo Xu, Hanqiao Li, Haiyan Zhang
{"title":"Influence of the Delamination Variation on the Diffuse Ultrasound in CFRPS","authors":"Yuanjun Zhang, Qi Zhu, Duo Xu, Hanqiao Li, Haiyan Zhang","doi":"10.1109/SPAWDA56268.2022.10045958","DOIUrl":"https://doi.org/10.1109/SPAWDA56268.2022.10045958","url":null,"abstract":"In aerospace industry, Carbon Fiber Reinforced Plates (CFRPs) play an important role for their excellent properties. Delamination is the most common defect in CFRPs, which greatly affects the mechanical properties. The hidden position of the delamination results in the detection barrier, especially at the early stage. The diffusion law is used to describe the wave intensity after being scattered multiple times. The purpose of this paper is to identify the influence of delamination on diffusion parameters. 45% diffusivity variation can be obtained for a progressive change delamination with a diameter of 15 mm. For smaller size delamination, the diffusivity variation is also sensitive to the delamination change at 2.2MHz inspection here. The ability of this method to early detect delamination is confirmed by simulation.","PeriodicalId":387693,"journal":{"name":"2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124928718","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
Study on CFRP Sheet Strengthening Technique to Reinforced Beam 碳纤维布加固加固梁的技术研究
2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2022-10-11 DOI: 10.1109/SPAWDA56268.2022.10046014
H. Li
{"title":"Study on CFRP Sheet Strengthening Technique to Reinforced Beam","authors":"H. Li","doi":"10.1109/SPAWDA56268.2022.10046014","DOIUrl":"https://doi.org/10.1109/SPAWDA56268.2022.10046014","url":null,"abstract":"The application of carbon fiber reinforced polymer (CFRP) / resin composite materials to strengthen the reinforced beam is introduced. The CFRP material has many advantages such as high strength, good fire resistance and conductivity. It can not only be used as a structural material for reinforcing the strength of structures, but also can be applied to the safety diagnosis and life prediction of large structure as an intelligent material. The objective is to investigate the natural frequency reinforcing performance of CFRP sheets by combining the finite element simulation analysis and experimental research. The results show that CFRP sheets can reinforce the strength of structure and enhance its natural frequency, which provides a fundamental study for the application of CFRP materials in civil engineering.","PeriodicalId":387693,"journal":{"name":"2022 16th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124953869","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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