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

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NDE Application of Air-Coupled Transducer for Surface Crack Detection 空气耦合传感器在表面裂纹无损检测中的应用
2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-01-01 DOI: 10.1109/SPAWDA.2019.8681869
Xiaoyu Wang, Cong-cong Li, Haodong Wu, De Zhang, Xiao-dong Zhang, Xun Gong
{"title":"NDE Application of Air-Coupled Transducer for Surface Crack Detection","authors":"Xiaoyu Wang, Cong-cong Li, Haodong Wu, De Zhang, Xiao-dong Zhang, Xun Gong","doi":"10.1109/SPAWDA.2019.8681869","DOIUrl":"https://doi.org/10.1109/SPAWDA.2019.8681869","url":null,"abstract":"According to the technical difficulties of the air-coupled piezoelectric ultrasonic transducer, 1-3 type piezoelectric composites and double matching layers structure are adopted in order to solve the acoustic impedance mismatch at the interface between the piezoelectric materials and air. The optimal design of the matching layer thickness for double matching layers structure air-coupled ultrasonic transducer is also completed through experiments. Based on this, 440 kHz flat-plate and focused air-coupled piezoelectric ultrasonic transducer are designed, fabricated and characterized. Finally, surface cracks are detected using the focused air-coupled piezoelectric ultrasonic transducer.","PeriodicalId":304940,"journal":{"name":"2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128705157","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
Design And Experimental Study On Vibration Isolation System Of Vector Sensor Application Platform 矢量传感器应用平台隔振系统的设计与实验研究
2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-01-01 DOI: 10.1109/SPAWDA.2019.8681817
Tian-ji Zhao, Hong-juan Chen
{"title":"Design And Experimental Study On Vibration Isolation System Of Vector Sensor Application Platform","authors":"Tian-ji Zhao, Hong-juan Chen","doi":"10.1109/SPAWDA.2019.8681817","DOIUrl":"https://doi.org/10.1109/SPAWDA.2019.8681817","url":null,"abstract":"Based on the classical theory of vibration reduction, the single stage and double stage vibration isolation systems is designed for the fixed mounted vector sensor. At the same time, the corresponding models are established in COMSOL finite element software, and the performance of vibration reduction of vector sensor application platform are simulated and analyzed. At last, the output signals of the vector sensor in different connection states are compared and analyzed through the experiment of vibration reduction. The results show that the transmission characteristics of the vibration isolation system of the vector sensor can be predicted by using the finite element software, and propose a reasonable improvement direction.","PeriodicalId":304940,"journal":{"name":"2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116473866","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
Structural Design and Performance Analysis of a Three-Dimensional Acoustic Metamaterial 三维声学超材料的结构设计与性能分析
2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-01-01 DOI: 10.1109/SPAWDA.2019.8681792
G. Lin, Yunjoo Kang, Yu-liang Li, Yongtao Yao, H. Tan
{"title":"Structural Design and Performance Analysis of a Three-Dimensional Acoustic Metamaterial","authors":"G. Lin, Yunjoo Kang, Yu-liang Li, Yongtao Yao, H. Tan","doi":"10.1109/SPAWDA.2019.8681792","DOIUrl":"https://doi.org/10.1109/SPAWDA.2019.8681792","url":null,"abstract":"A three-dimensional acoustic metamaterial consisting of frame, spherical attachment and membrane is designed, which has an extremely wide sound insulation band and a low sound insulation frequency. Finite element method is employed to study the influence of spherical attachment size, frame cross section size and membrane thickness on the forbidden band. Results show that within a certain range, as the radius of the attachment increases, the termination frequency and width of the first forbidden band increase. As the frame cross section size increases, the starting frequency of the first forbidden band increases. As the thickness of the membrane increases, the starting frequency of the first forbidden band does not change too much, and the termination frequency of the first forbidden band decreases sharply, and then tends to be flat.","PeriodicalId":304940,"journal":{"name":"2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125627676","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
High Performance Piezoelectric Crystal Alpha-Bibo for Photoacoustic Gas Detection 用于光声气体检测的高性能压电晶体Alpha-Bibo
2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-01-01 DOI: 10.1109/SPAWDA.2019.8681840
Feifei Chen, F. Yu, W. Bai, Lian Xiong, G. Diebold, Xian Zhao
{"title":"High Performance Piezoelectric Crystal Alpha-Bibo for Photoacoustic Gas Detection","authors":"Feifei Chen, F. Yu, W. Bai, Lian Xiong, G. Diebold, Xian Zhao","doi":"10.1109/SPAWDA.2019.8681840","DOIUrl":"https://doi.org/10.1109/SPAWDA.2019.8681840","url":null,"abstract":"The photoacoustic (PA) effect combing with the piezoelectric effect has been designed for trace gas detection, which has been expected to be operational over a wide temperature range. In this paper, the lead-free piezoelectric crystals LiNbO3 (LN), NdCa4O(BO3)3(NdCOB) and $alpha-$BiB3O6(BIBO) are studied and compared for potential PA trace gas detection. The piezoelectric voltage coefficients of LN $(g21)$, NdCOB $(g12)$ and BIBO $(g21)$ were characterized and found to be on the order of 0.026 Vm/N, 0.047 Vm/N and 0.225 Vm/N at room temperature, respectively. Among the three kinds of piezoelectric crystals, the BIBO crystal possesses the highest longitudinal piezoelectric coefficient $d_{22}$ and the largest piezoelectric voltage coefficient $g_{22}$, being on the order of 40 pC/N and 0.538 Vm$bullet$/N, respectively. The piezoelectric voltage coefficients for NdCOB and BIBO crystal were obtained to show good temperature stability and maintained the similar values over the temperature range, while the value of $g_{21}$ for LN crystal showed a decrease with increasing temperature. Taking advantage of the strong piezoelectric activity and high mechanical quality factor Q of BIBO crystal, piezoelectric transducer with central resonance frequency of $sim$443 kHz was fabricated for PA trace gas detection. The final detection limit for trace sulfur hexafluoride (SF6) gas was extended to the parts-per-quadrillion level.","PeriodicalId":304940,"journal":{"name":"2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA)","volume":"413 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115924428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Flexible Gripper Manufacturing and Simulation Based on 3D Printing 基于3D打印的柔性夹持器制造与仿真
2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-01-01 DOI: 10.1109/SPAWDA.2019.8681858
Angela Tong, Jianying Hu, Minghua Zhang, Yuan Jin, Jianke Du
{"title":"Flexible Gripper Manufacturing and Simulation Based on 3D Printing","authors":"Angela Tong, Jianying Hu, Minghua Zhang, Yuan Jin, Jianke Du","doi":"10.1109/SPAWDA.2019.8681858","DOIUrl":"https://doi.org/10.1109/SPAWDA.2019.8681858","url":null,"abstract":"A flexible gripper combining 3D printing and electromechanical control system is presented. The thermodynamic behavior of shape memory polymer is used to action resetting after motor drive controls grasping. The gripper is fabricated using photopolymerization with high cycle-life shape memory polymers. Experimental results show that shape memory polymers with 10wt% crosslinker and 1wt%$sim$1.5wt% photo-initiators exhibit excellent performance with nearly 100% full recovery, fixity and stability of the shape memory properties within seconds. Besides, a numerical model is established and the simulation results are validated. Using an electromechanical control system, the flexible gripper is easily controlled to grasp objects while maintaining the grasping force, thus proving a future perspective for biomedical and soft robotic applications.","PeriodicalId":304940,"journal":{"name":"2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132446389","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: 3
The Interaction of an Interface Circular Inclusion with Disconnected Curve and Circular Cavity Impacted by Sh-Wave 具有不连通曲线的界面圆包体与受sh波冲击的圆腔的相互作用
2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-01-01 DOI: 10.1109/SPAWDA.2019.8681848
H. Qi, Q. Zheng, Hao Yu, Qin-qin Zou
{"title":"The Interaction of an Interface Circular Inclusion with Disconnected Curve and Circular Cavity Impacted by Sh-Wave","authors":"H. Qi, Q. Zheng, Hao Yu, Qin-qin Zou","doi":"10.1109/SPAWDA.2019.8681848","DOIUrl":"https://doi.org/10.1109/SPAWDA.2019.8681848","url":null,"abstract":"In this paper, the scattering of SH-waves in a full-space bi-material model with interface inclusions and shallow buried circular cavities in the medium is studied. The paper adopts the idea of “split” and “fit”. The specific methods used in the research process include complex function method, Green function method and multi-pole coordinate moving method. Firstly, the whole space structure are divided into two half-space models along the interface to solve the displacement field in the upper and lower half-space structures, and then the two half-space structures are combined. In order to ensure the continuity of the structure interface, a set of unknown force system is applied to the interface of the bi-material. The unknown force system is solved by interface continuity. Finally, the influence of different medium parameters on dynamic stress concentration factor is analyzed by a specific example.","PeriodicalId":304940,"journal":{"name":"2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130918274","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 Active Control Method of Reflected Sound Wave In Underwater Acoustic Tube 水声管反射声波的主动控制方法
2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-01-01 DOI: 10.1109/SPAWDA.2019.8681875
Shu-shu Si, Liang Feng
{"title":"An Active Control Method of Reflected Sound Wave In Underwater Acoustic Tube","authors":"Shu-shu Si, Liang Feng","doi":"10.1109/SPAWDA.2019.8681875","DOIUrl":"https://doi.org/10.1109/SPAWDA.2019.8681875","url":null,"abstract":"Passive sound absorbing materials have limited the properties of sound absorption for low frequency sound waves. Therefore, an active control method proposed to eliminate the low-frequency reflected echo. But the passive sound absorption material, sensor and control source of piezoelectric material are completely separately in the traditional active control method. It is not suitable for engineering application, although it has some control effect. In this paper, an active control method based on integrated hydrophone proposed, which integrates all the devices together and combines with FLMS filter algorithm to control the reflected acoustic wave. Besides, the experimental study on active control of the reflected sound waves in the underwater acoustic tube is finished, the active control experiment of reflected acoustic wave carried out for single frequency signal in underwater acoustic tube, and the effect of active control of reflected acoustic wave is over 6 dB.","PeriodicalId":304940,"journal":{"name":"2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA)","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123415572","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
Iterative Approach for Predicting Free Edge Stresses in Piezoelectric Laminates Upon Polynomial Assumption 基于多项式假设的压电层合板自由边缘应力迭代预测方法
2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-01-01 DOI: 10.1109/SPAWDA.2019.8681885
Yan Guo, Z. Qian, Bin Huang
{"title":"Iterative Approach for Predicting Free Edge Stresses in Piezoelectric Laminates Upon Polynomial Assumption","authors":"Yan Guo, Z. Qian, Bin Huang","doi":"10.1109/SPAWDA.2019.8681885","DOIUrl":"https://doi.org/10.1109/SPAWDA.2019.8681885","url":null,"abstract":"This paper presents a stress function based iterative approach for predicting the free edge stresses in piezoelectric laminates upon polynomial assumption. The polynomial stress function based iterative approach is quite different from the traditional plate and shell theories, where the polynomial stress fields are adopted instead of displacement field functions. The stress boundary conditions are prescribed at the surfaces and applied at the free edges so that the stress components satisfy the boundary conditions automatically. The complementary virtual work is adopted to derive the governing equations resulting in a set of fourth order coupled differential equations. Some results are given to study the efficiency and accuracy of the proposed methodology. The proposed approach can be used as an efficient tool for analysis of free edge stresses in piezoelectric composite structures.","PeriodicalId":304940,"journal":{"name":"2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114063361","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
The Method of Eliminating the Receiving Response Fluctuation of Planar PVDF Hydrophone at Low Frequency 消除平面PVDF水听器低频接收响应波动的方法
2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-01-01 DOI: 10.1109/SPAWDA.2019.8681785
Yan Guo, Xin-ran Xu, Zhen-yu Zheng
{"title":"The Method of Eliminating the Receiving Response Fluctuation of Planar PVDF Hydrophone at Low Frequency","authors":"Yan Guo, Xin-ran Xu, Zhen-yu Zheng","doi":"10.1109/SPAWDA.2019.8681785","DOIUrl":"https://doi.org/10.1109/SPAWDA.2019.8681785","url":null,"abstract":"Due to its high piezoelectric constant, strong noise and impact resistance, good hydrostatic resistance, good flexibility, low acoustic impedance, planar PVDF hydrophone is widely used in submarine side array. However, due to the existence of low frequency bending mode of hydrophone, the sensitivity response of hydrophone fluctuates at low frequency. In this paper, COMSOL finite element software is used to analyze the bending mode and sensitivity response of plane PVDF hydrophone. By researching the principle of sensitivity fluctuation, four methods are proposed to eliminate low frequency sensitivity fluctuation. The four cases have their own different effects and disadvantages. According to the actual operating frequency band and the requirements of hydrophone area, weight and cost, these four methods can be considered synthetically to eliminate the sensitivity fluctuation.","PeriodicalId":304940,"journal":{"name":"2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA)","volume":"516 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116225851","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
The Accelerometer Utilizing the Transverse Vibration Mode of LGT Piezoelectric Crystal 利用LGT压电晶体横向振动模式的加速度计
2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA) Pub Date : 2019-01-01 DOI: 10.1109/SPAWDA.2019.8681812
Guangda Wu, Xue-liang Liu, F. Yu, Fang-lin Li, Shi-wei Tian, Xiu-feng Cheng, Xian Zhao
{"title":"The Accelerometer Utilizing the Transverse Vibration Mode of LGT Piezoelectric Crystal","authors":"Guangda Wu, Xue-liang Liu, F. Yu, Fang-lin Li, Shi-wei Tian, Xiu-feng Cheng, Xian Zhao","doi":"10.1109/SPAWDA.2019.8681812","DOIUrl":"https://doi.org/10.1109/SPAWDA.2019.8681812","url":null,"abstract":"A transverse-vibration-mode piezoelectric accelerometer using La3Ga5.5Ta0.5O14 (LGT) single crystal was designed and fabricated for potential high temperature sensing applications. Dynamic modeling of the accelerometer based on the transverse-vibration-mode of LGT crystal was presented first, followed by crystal cut preparation, sensor design and assembly, experimental setup establishment and sensing test. The prototype of transverse-vibration-mode piezoelectric accelerometer was tested in the temperature range of $20^{circ}mathrm{C}sim 350^{circ}mathrm{C}$ under 160Hz. The average sensitivity of the prototype was evaluated to be 3.3 pC/g over the tested temperature range and the linearity reached 1.2%. This work might supply an approach for design and fabrication of new piezoelectric accelerometers using the transverse-vibration-mode of piezoelectric crystal materials.","PeriodicalId":304940,"journal":{"name":"2019 Symposium on Piezoelectrcity,Acoustic Waves and Device Applications (SPAWDA)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115376444","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
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