CiNii Articles - ultrasonic transducer

1

Parallel Receiving Needle Beam Ultrasonic Testing Technique [in Japanese]

TAKADA Hajime , OZEKI Takahumi

日本金屬學會誌 76(9), 563-571, 2012-09-01

References (16)
2

An ultrasonic motor for cryogenic temperature using bolt-clamped Langevin-type transducer

Yamaguchi Daisuke , Kanda Takefumi , Suzumori Koichi

… In this study, a small ultrasonic motor driven under cryogenic temperature conditions has been fabricated and evaluated. … Since transducer performance generally decreases at cryogenic temperatures, we designed and fabricated a bolt-clamped Langevin-type transducer for operation at cryogenic temperature. … We simulated the influence of thermal stress on the transducer. …

Sensors and Actuators A: Physical 184, 134-140, 2012-09-00

IR CrossRef
3

Ultrasonic 2D Matrix Array Transducer for Volumetric Imaging in Real Time (Ultrasonics)

Roh Yongrae

電子情報通信学会技術研究報告 : 信学技報 112(186), 85-88, 2012-08-27
4

Focal range control of focused ultrasonic field by curvature changing of transducer (Ultrasonics)

KIM Jungsoon , KIM Moojoon , HA Kanglyeol

電子情報通信学会技術研究報告 : 信学技報 112(186), 1-4, 2012-08-27
5

Three-Dimensional Quantitative Optical Measurement of Asymmetrically Focused Ultrasound Pressure Field

Shimazaki Yuta , Harigane Soichiro , Yoshizawa Shin , Umemura Shin-ichiro

… On the other hand, optical ultrasonic field mapping has the advantages of speed and its nature of not by interfering with the acoustic field. … The asymmetric field was generated by a focused transducer with four elements. … Also, the absolute measurement of ultrasonic pressure was checked by measuring the center of the field of the charge-coupled device (CCD) camera. …

Jpn J Appl Phys 51(7), 07GF25-07GF25-4, 2012-07-25

The Japan Society of Applied Physics
6

Development of Multiple-Frequency Ultrasonic Imaging System Using Multiple Resonance Piezoelectric Transducer

Akiyama Iwaki , Yoshizumi Natsuki , Saito Shigemi , Wada Yuji , Koyama Daisuke , Nakamura Kentaro

… The authors have developed a multiple frequency imaging system using a multiple resonance transducer (MRT) consisting of 1--3 composite materials with a low mechanical quality factor Q bonded together. … This makes it possible to obtain B-mode images of satisfactory resolution using ultrasonic pulses owing to their short duration. …

Jpn J Appl Phys 51(7), 07GF02-07GF02-9, 2012-07-25

The Japan Society of Applied Physics
7

Ultrasound Open Channel Flow-Speed Measurement Based on the Lateral Directional Echo Observations

Nishimura Ichiro , Ishigamori Mitsuhide , Yamada Akira

… Conventional ultrasonic flowmeters have a problem in measuring the small open channel fluid flow. … To solve this problem, a lateral observation technique using a single transmitter/receiver transducer attached at the bottom of the pipe was proposed. …

Jpn J Appl Phys 51(7), 07GB13-07GB13-5, 2012-07-25

The Japan Society of Applied Physics
8

Therapeutic Array Transducer Element Using Coresonance between Hemispherical Piezoceramic Shell and Water Sphere: Effect of Load Masses of Support and Electric Contact

Otsu Kenji , Yoshizawa Shin , Umemura Shin-ichiro

… For therapeutic ultrasound array transducers, it is necessary to reduce the electrical impedance of their elements so that the transducer can produce high ultrasonic power at a relatively low drive voltage. … For this purpose, a new concept of a breathing-mode piezoceramic transducer element has been proposed. …

Jpn J Appl Phys 51(7), 07GF24-07GF24-6, 2012-07-25

The Japan Society of Applied Physics
9

An Ultrasonic Motor for Use at Ultralow Temperature Using Lead Magnesium Niobate--Lead Titanate Single Crystal

Yamaguchi Daisuke , Kanda Takefumi , Suzumori Koichi , Kuroda Masataka , Takeda Dai

… In this study, an ultrasonic motor for use at ultralow temperatures has been fabricated and evaluated. … The motor has a bolt-clamped Langevin-type transducer using lead magnesium niobate--lead titanate (PMN--PT) single crystal. … The transducer is proposed as an oscillator for use at ultralow temperatures by simulation of the thermal stress and evaluation of the pre-load. … The thermal effect of the transducer was evaluated when the temperature was changed. …

Jpn J Appl Phys 51(7), 07GE09-07GE09-6, 2012-07-25

The Japan Society of Applied Physics
10

Wideband Multimode Transducer Consisting of c-Axis Tilted ZnO/c-Axis Normal ZnO Multilayer

Takayanagi Shinji , Yanagitani Takahiko , Matsukawa Mami

… Wideband ultrasonic transducers are required for acoustic imaging and nondestructive evaluation. … In this study, we have fabricated transducer consisting of c-axis tilted ZnO/c-axis normal ZnO multilayer on the Au(111)/Ti/silica glass substrate. … We have investigated the crystalline orientations and frequency characteristics of the multilayer transducer. …

Jpn J Appl Phys 51(7), 07GC08-07GC08-4, 2012-07-25

The Japan Society of Applied Physics
11

Development of a Long-Focal-Range Annular Array Ultrasonic Transducer

Korai Yusuke , Baba Atsushi

… Conventional annular array transducers designed with Fresnel divided elements have a limited maximum size of the aperture of the transducer. … In this study, we designed and fabricated a prototype of a large-aperture annular array transducer to inspect next-generation semiconductors. …

Jpn J Appl Phys 51(7), 07GC03-07GC03-3, 2012-07-25

The Japan Society of Applied Physics
12

Focal Length Controllable Ultrasonic Array Transducer with Adjustable Curvature

Kim Jungsoon , Kim Moojoon , Ha Kanglyel

… In the underwater imaging field, the control of the focal length of a transducer is very useful. … As one of the control methods, we suggested an ultrasonic array transducer with adjustable curvature by using air pressure. … The curvature of the transducer was investigated according to the air pressure level in the back space of the transducer. …

Jpn J Appl Phys 51(7), 07GC02-07GC02-2, 2012-07-25

The Japan Society of Applied Physics
13

Imaging of Acoustic Waves in Piezoelectric Ceramics by Coulomb Coupling

Habib Anowarul , Shelke Amit , Pluta Mieczyslaw , Kundu Tribikram , Pietsch Ullrich , Grill Wolfgang

… The transport properties of bulk and guided acoustic waves travelling in a lead zirconate titanate (PZT) disc, originally manufactured to serve as ultrasonic transducer, have been monitored by scanned Coulomb coupling. …

Jpn J Appl Phys 51(7), 07GB05-07GB05-2, 2012-07-25

The Japan Society of Applied Physics
14

Evaluation of Hydrophone Spatial Averaging Effect in Near Field Measurement for Determining Mechanical Index

Yoshioka Masahiro , Kikuchi Tsuneo

… An evaluation method of the hydrophone spatial averaging effect in near field measurement using numerically calculated ultrasonic fields for determining the mechanical index related to diagnostic ultrasound is proposed. …

Jpn J Appl Phys 51(7), 07GB03-07GB03-2, 2012-07-25

The Japan Society of Applied Physics
15

Ultrasonic Imaging of Internal Flaw with Flexible Array Transducer Located on Irregular Surface [in Japanese]

中畑和之 , 徳増純男

電子情報通信学会技術研究報告 : 信学技報 112(84), 1-5, 2012-06-21
16

Remote Sensing Sensor Using Giant Magnetostrictive Materials(<Special Issue>The 20th MAGDA Conference in Pacific Asia (MAGDA2011))

MURAYAMA Riichi , YAMAJI Zyunji , SRIRATANA Witsarut , KOBAYASHI Makiko , JEN Cheng-Kuei

Journal of the Japan Society of Applied Electromagnetics 20(2), 508-513, 2012-06-10

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17

Fabrication and transmit-receive characteristics of ultrasonic transducers array using epitaxial PZT thin films on γ-AlO/Si substrates [in Japanese]

尾？勝弥 , 西村将人 , 鈴木啓佑 [他]

電子情報通信学会技術研究報告 : 信学技報 112(32), 29-33, 2012-05-17
18

Fabrication and transmit-receive characteristics of ultrasonic transducers array using epitaxial PZT thin films on γ-AlO/Si substrates [in Japanese]

尾？勝弥 , 西村将人 , 鈴木啓佑 [他]

電子情報通信学会技術研究報告 : 信学技報 112(33), 29-33, 2012-05-17
19

Fabrication and transmit-receive characteristics of ultrasonic transducers array using epitaxial PZT thin films on γ-AlO/Si substrates [in Japanese]

尾？勝弥 , 西村将人 , 鈴木啓佑 [他]

電子情報通信学会技術研究報告 : 信学技報 112(34), 29-33, 2012-05-17
20

Fabrication and transmit-receive characteristics of ultrasonic transducers array using epitaxial PZT thin films on γ-Al_2O_3/Si substrates [in Japanese]

OZAKI Katsuya , NISHIMURA Masato , SUZUKI Keisuke , NUMATA Yasuyuki , OKADA Nagaya , AKAI Daisuke , ISHIDA Makoto

本研究では、エピタキシャルPZT/SrRuO_3/Pt/γ-Al_2O_3/Si構造を用いた8×8chの2DpMUTsアレイを作製し、超音波の受信実験および送信実験を行った。受信信号のばらつきの平均化と送信音圧の向上のため1chは42個の振動子とし、医療診断装置で一般的に用いられるMHz帯を念頭に1素子の直径は100μmで作製した。作製したデバイスにおいて超音波の伝搬速度の違いを使用した文字のイメ …

IEICE technical report. Electron devices 112(32), 29-33, 2012-05-10

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