发布求助
文献互助 智能选刊 最新文献

Proceedings. IEEE Ultrasonics Symposium最新文献

筛选
英文 中文
Nondestructive evaluation of material properties with EMAT (formability in cold rolled steel sheets and residual stress in railroad wheel) EMAT无损评价材料性能(冷轧钢板成形性和铁路车轮残余应力)
Proceedings. IEEE Ultrasonics Symposium Pub Date : 1989-10-03 DOI: 10.1109/ULTSYM.1989.67171
R. Murayama, K. Fujisawa, H. Fukuoka, M. Hirao, S. Yonehara
{"title":"Nondestructive evaluation of material properties with EMAT (formability in cold rolled steel sheets and residual stress in railroad wheel)","authors":"R. Murayama, K. Fujisawa, H. Fukuoka, M. Hirao, S. Yonehara","doi":"10.1109/ULTSYM.1989.67171","DOIUrl":"https://doi.org/10.1109/ULTSYM.1989.67171","url":null,"abstract":"Ultrasonic techniques using an EMAT (electromagnetic acoustic transducer) for evaluating material properties were developed. Two items are described. One is the evaluation of the formability in cold-rolled steel sheets by using the S/sub 0/-mode plate-wave EMAT. The other is the measurement by the stress in the rim of railroad wheels by using two polarized SH-waves EMATs. The experimental results obtained in these techniques agree with theoretical predictions, and the techniques are useful for monitoring the material properties.<<ETX>>","PeriodicalId":89469,"journal":{"name":"Proceedings. IEEE Ultrasonics Symposium","volume":"4 1","pages":"1159-1162 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1989-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74231403","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: 11
Dynamic approach for finding effective elastic and piezoelectric constants of superlattices 求超晶格有效弹性常数和压电常数的动态方法
Proceedings. IEEE Ultrasonics Symposium Pub Date : 1989-10-03 DOI: 10.1109/ULTSYM.1989.67019
E. Akçakaya, G. Farnell, E. Adler
{"title":"Dynamic approach for finding effective elastic and piezoelectric constants of superlattices","authors":"E. Akçakaya, G. Farnell, E. Adler","doi":"10.1109/ULTSYM.1989.67019","DOIUrl":"https://doi.org/10.1109/ULTSYM.1989.67019","url":null,"abstract":"A dynamic approach is presented for determining a set of equivalent elastic, piezoelectric, and permittivity constants for a superlattice consisting of a periodic multilayer of anisotropic materials. The objective is to predict the acoustic properties of such a periodic structure in the long-wavelength (low-frequency) limit. It is shown that the acoustic-wave properties for propagation in any plane defined by an arbitrary direction and the superlattice axis are contained in a 6*6 system matrix requiring for its construction only 29 (at most) material constants from a total of 46. The computation of an equivalent system matrix for a superlattice is demonstrated, and the manner of obtaining the equivalent density, 6 permittivities, 21 stiffness, and 18 piezoelectric constants is given.<<ETX>>","PeriodicalId":89469,"journal":{"name":"Proceedings. IEEE Ultrasonics Symposium","volume":"7 1","pages":"415-418 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1989-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74277595","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: 15
Non-contact ultrasonic inspection of diffusion bonds in titanium 钛中扩散键的非接触超声检测
Proceedings. IEEE Ultrasonics Symposium Pub Date : 1989-10-03 DOI: 10.1109/ULTSYM.1989.67162
G. S. Taylor, D. Hutchins, S. Palmer, M. Moles
{"title":"Non-contact ultrasonic inspection of diffusion bonds in titanium","authors":"G. S. Taylor, D. Hutchins, S. Palmer, M. Moles","doi":"10.1109/ULTSYM.1989.67162","DOIUrl":"https://doi.org/10.1109/ULTSYM.1989.67162","url":null,"abstract":"A method is presented for the remote ultrasonic inspection of diffusion bonds in titanium. Analysis using cepstral processing has shown that it is possible to obtain information concerning the state of bonding. The method shows promise for the inspection of spent nuclear-fuel containers.<<ETX>>","PeriodicalId":89469,"journal":{"name":"Proceedings. IEEE Ultrasonics Symposium","volume":"4 1","pages":"1113-1115 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1989-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72881343","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: 6
Frequency instabilities in SAW resonators and oscillators SAW谐振器和振荡器的频率不稳定性
Proceedings. IEEE Ultrasonics Symposium Pub Date : 1989-10-03 DOI: 10.1109/ULTSYM.1989.66958
D. Hauden, E. Bigler, A. d'Almeida, S. Ballandras, P. Leblois
{"title":"Frequency instabilities in SAW resonators and oscillators","authors":"D. Hauden, E. Bigler, A. d'Almeida, S. Ballandras, P. Leblois","doi":"10.1109/ULTSYM.1989.66958","DOIUrl":"https://doi.org/10.1109/ULTSYM.1989.66958","url":null,"abstract":"SAW (surface acoustic wave) oscillator stability is limited by intrinsic instabilities of the oscillating loop and by instabilities due to external causes translated into phase noise. Thus, frequency and phase fluctuations are due to noise in the SAW resonator and its electronics and to temperature effects and mechanical stresses acting on the SAW device. Results concerning both aspects of the problem are described. An analytic method is used to choose a quartz cut which minimizes simultaneously the sensitivities to static thermal effects and to mechanical stresses which induce frequency shifts through the support deformations of the propagation substrate. Experimental curves on an STC cut and a new low-sensitivity cut are presented. Stability measurements are reported for several SAW oscillators built from SAW resonators fabricated according to different processes. Short-term stability and aging are compared, and their relation to the details of fabrication is discussed.<<ETX>>","PeriodicalId":89469,"journal":{"name":"Proceedings. IEEE Ultrasonics Symposium","volume":"133 1","pages":"53-57 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1989-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77515605","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
An analysis of the normal acceleration sensitivity of contoured quartz resonators with simple rectangular supports 矩形支撑异形石英谐振器法向加速度灵敏度分析
Proceedings. IEEE Ultrasonics Symposium Pub Date : 1989-10-03 DOI: 10.1109/ULTSYM.1989.67015
Y.S. Zhou, D. Shick, H. Tiersten
{"title":"An analysis of the normal acceleration sensitivity of contoured quartz resonators with simple rectangular supports","authors":"Y.S. Zhou, D. Shick, H. Tiersten","doi":"10.1109/ULTSYM.1989.67015","DOIUrl":"https://doi.org/10.1109/ULTSYM.1989.67015","url":null,"abstract":"The normal acceleration sensitivity of contoured quartz resonators with the plate extending slightly beyond simple rectangular supports is analyzed. The biasing deformation fields are calculated by means of a novel variational approximation procedure that employs the variational principle with all natural conditions for anisotropic static flexure. The accompanying strains varying quadratically through the thickness are then determined recursively from the plate shearing stress resultants. The calculated biasing deformation fields are employed in an existing perturbation equation along with the equivalent trapped-energy mode shapes for the contoured resonator to calculate the normal acceleration sensitivities. Results are presented for a range of orientations and aspect ratios of the rectangular support configuration for both the AT and SC cuts.<<ETX>>","PeriodicalId":89469,"journal":{"name":"Proceedings. IEEE Ultrasonics Symposium","volume":"26 1","pages":"393-400 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1989-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76355221","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: 10
Cavitation-controlled ultrasonic agitator 空化控制超声搅拌器
Proceedings. IEEE Ultrasonics Symposium Pub Date : 1989-10-03 DOI: 10.1109/ULTSYM.1989.67065
S. Sheen, W. Lawrence, A. C. Raptis
{"title":"Cavitation-controlled ultrasonic agitator","authors":"S. Sheen, W. Lawrence, A. C. Raptis","doi":"10.1109/ULTSYM.1989.67065","DOIUrl":"https://doi.org/10.1109/ULTSYM.1989.67065","url":null,"abstract":"An ultrasonic agitator has been designed for application in a confined area with a high-temperature, high-pressure, and corrosive environment. Control of this agitator is based on the detection of noise levels and subharmonics produced during cavitation and streaming. Noise signatures of agitation in different liquids and in liquids with particles are determined and discussed. The potential applications of this agitator are in a fluid-mixing device, a homogenizer during crystallization, a cavitation sensor, an acoustic streaming indicator, a fluid-characterization device, and a local liquid-solid heat-transfer enhancer.<<ETX>>","PeriodicalId":89469,"journal":{"name":"Proceedings. IEEE Ultrasonics Symposium","volume":"21 1","pages":"653-656 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1989-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80360281","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: 10
Ultrasonic scanning, imaging and recognition of bottles 超声波扫描，成像和识别瓶子
Proceedings. IEEE Ultrasonics Symposium Pub Date : 1989-10-03 DOI: 10.1109/ULTSYM.1989.67061
R. Breeuwer
{"title":"Ultrasonic scanning, imaging and recognition of bottles","authors":"R. Breeuwer","doi":"10.1109/ULTSYM.1989.67061","DOIUrl":"https://doi.org/10.1109/ULTSYM.1989.67061","url":null,"abstract":"A compact machine has been developed to take in returnable bottles. Using ultrasonics, it recognizes up to 150 different bottles. A teaching facility allows store personnel to add new types of bottles to the reference set. The ultrasonic system operates in air and employs a strongly focussing parabolic acoustical mirror in combination with a linear array of three transducers to image the bottle. To reduce artifact, phase-insensitive detection is incorporated. Automatic calibration helps to achieve the relatively high accuracy required. Dedicated recognition software attempts to match the present bottle to one in the reference set. The ultrasonic system and recognition software are discussed.<<ETX>>","PeriodicalId":89469,"journal":{"name":"Proceedings. IEEE Ultrasonics Symposium","volume":"42 1","pages":"635-638 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1989-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86548860","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
Local domain inversion in ferroelectric crystals and its application to piezoelectric devices 铁电晶体的局部畴反转及其在压电器件中的应用
Proceedings. IEEE Ultrasonics Symposium Pub Date : 1989-10-03 DOI: 10.1109/ULTSYM.1989.67000
K. Nakamura, H. Shimizu
{"title":"Local domain inversion in ferroelectric crystals and its application to piezoelectric devices","authors":"K. Nakamura, H. Shimizu","doi":"10.1109/ULTSYM.1989.67000","DOIUrl":"https://doi.org/10.1109/ULTSYM.1989.67000","url":null,"abstract":"The authors report local domain-inversion phenomena in LiNbO/sub 3/ and LiTaO/sub 3/ plates and discuss applications of antipolarity domains to various piezoelectric devices. Ferroelectric local domain inversion takes place in LiNbO/sub 3/ during the Ti diffusion process at around 1000 degrees C, depending on the conditions. Similar domain inversion is caused by proton exchange followed by heat treatment, or even by heat treatment alone at higher temperatures. These domain-inversion phenomena can be caused in local region of plates without applying electric fields. The resulting domains have a reversed polar crystal axis and therefore have various constants opposite in sign to those in the original crystal. Applications described include bending vibrators and hysteresis-tree actuators, VHF and UHF ultrasonic transducers, and surface acoustic wave (SAW) devices.<<ETX>>","PeriodicalId":89469,"journal":{"name":"Proceedings. IEEE Ultrasonics Symposium","volume":"1 1","pages":"309-318 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1989-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88161152","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: 22
A design of ultrasonic transducers with curved back-electrodes 弯曲背电极超声换能器的设计
Proceedings. IEEE Ultrasonics Symposium Pub Date : 1989-10-03 DOI: 10.1109/ULTSYM.1989.67078
G. Du, J. Wu
{"title":"A design of ultrasonic transducers with curved back-electrodes","authors":"G. Du, J. Wu","doi":"10.1109/ULTSYM.1989.67078","DOIUrl":"https://doi.org/10.1109/ULTSYM.1989.67078","url":null,"abstract":"A design of ultrasonic transducers with curved back-electrodes is discussed. The theoretical principle of the design, which is based on electromagnetic theory, is quite general. A sufficient condition for producing a Gaussian beam is that the axial velocity distribution on the transducer surface is a Gaussian one. The transducer material is piezoelectric; the axial compressional oscillation is caused by the axial component of an applied electric field. The problem is that the required distribution of the electric field along the axial direction should be Gaussian. This can be achieved by using a curved dielectric back-electrode, whose shape can be determined by electromagnetic theory. The experimental results show that the sound fields generated by the Gaussian transducers fabricated based on the design agree well with the theoretical predictions.<<ETX>>","PeriodicalId":89469,"journal":{"name":"Proceedings. IEEE Ultrasonics Symposium","volume":"9 1","pages":"709-711 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1989-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83646769","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
Differential phase contrast acoustic microscopy 差相对比声学显微镜
Proceedings. IEEE Ultrasonics Symposium Pub Date : 1989-10-03 DOI: 10.1109/ULTSYM.1989.67101
H. Routh, T. Pusateri, M. Nikoonahad
{"title":"Differential phase contrast acoustic microscopy","authors":"H. Routh, T. Pusateri, M. Nikoonahad","doi":"10.1109/ULTSYM.1989.67101","DOIUrl":"https://doi.org/10.1109/ULTSYM.1989.67101","url":null,"abstract":"The acoustic counterpart of the Nomarski differential-phase optical microscope is described and demonstrated at 50 MHz. A phase sensitivity of 190 mV/degree with a noise floor at 10 mV in a 1 kHz bandwidth was measured for this instrument. This suggests that the minimum measurable height with this system is 22 AA. A variety of images obtained from metal surfaces and composite materials is presented.<<ETX>>","PeriodicalId":89469,"journal":{"name":"Proceedings. IEEE Ultrasonics Symposium","volume":"112 1","pages":"817-820 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1989-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86761644","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
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
小红书