Filters
Results 1 - 10 of 5344
Results 1 - 10 of 5344.
Search took: 0.029 seconds
Sort by: date | relevance |
AbstractAbstract
[en] In the broad and varied field of sensors this conference reviews thermal sensors for temperature measurements, gas sensors for gas analysis (for example analysis of exhaust gases from vehicles), optical fiber sensors, applications for optics, mechanics, robotics and signal processing. In particular one of the applications concerns acoustical transducers operating in liquid sodium for LMFBR reactors
[fr]
Dans le vaste domaine des capteurs cette conference passe en revue les capteurs thermiques pour la mesure des temperatures, les capteurs pour gaz (analyse des gaz). Les capteurs a fibres optiques et les applications en optique, mecanique, robotique et le traitement du signal. En particulier une des applications concerne les capteurs acoustique fonctionnant dans le sodium liquide pour les reacteurs a neutrons rapidesOriginal Title
Conference capteurs 84. Recueil des communications
Source
1984; 449 p; Documentation Francaise; Paris (France); Transducer 84 conference on technics and applications; Paris (France); 5-7 Jun 1984; ISBN 2-11-001258-7; 

Record Type
Book
Literature Type
Conference
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Charachon, Robert; Goer, Jean de; Oddes, Marcel.
CEA, 75 - Paris (France); Grenoble-1 Univ., 38 (France)
CEA, 75 - Paris (France); Grenoble-1 Univ., 38 (France)
AbstractAbstract
[en] This invention relates to a multiple channel electrode partially implantable in the cochlea for transmitting to the auditory nerve electric signals from an outside electronic device such as an analyzer converting acoustic signals into electric signals
[fr]
La presente invention a pour objet une electrode a canaux multiples implantable en partie dans la cochlee et destinee a transmettre au nerf auditif des signaux electriques provenant d'un dispositif electronique exterieur tel qu'un analyseur convertisseur de signaux acoustiques en signaux electriquesOriginal Title
Electrode a canaux multiples implantable
Source
15 Sep 1977; 10 p; FR PATENT DOCUMENT 2403084/A/; Available from Institut National de la Propriete Industrielle, Paris (France)
Record Type
Patent
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Saglio, Robert.
CEA, 75 - Paris (France)
CEA, 75 - Paris (France)
AbstractAbstract
[en] The ultrasonic centring device described features at least one ultrasonic converter located inside a containment this converter emitting an ultrasonic wave, devices to pick up the various ultrasonic echoes coming from the walls of the containment, instruments for measuring the time interval separating the reception of the various echoes and appliances for moving the converter(s) until the various echoes are received at the same time by the echo receiving units
[fr]
On decrit un dispositif de centrage par ultrasons, caracterise en ce qu'il comprend un traducteur ultrasonore au moins dispose a l'interieur d'une enceinte, ce traducteur emettant une onde ultrasonore, des moyens pour recueillir les differents echos ultrasonores envoyes par les parois de l'enceinte, des moyens pour mesurer l'intervalle de temps separant la reception des differents echos et des moyens pour deplacer le ou les traducteurs jusqu'a ce que les differents echos soient recus en meme temps par les moyens de reception des echosOriginal Title
Dispositif de centrage par ultrasons
Primary Subject
Source
31 May 1977; 8 p; FR PATENT DOCUMENT 2393268/A/; Available from Institut National de la Propriete Industrielle, Paris (France)
Record Type
Patent
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] A sufficient amplification reserve can be reached even for free us-waves for many testing problems. Hereby there is a chance to introduce the advantages of the absence of coupling-media into practice. The results in pipe-waves are assured to a for extent in the laboratory stadium for the detection of cross-cut faults and free waves for perpendicular and angular incoupling of transversal waves. (DG)
[de]
Auch bei freien US-Wellen kann eine fuer viele Pruefprobleme ausreichende Verstaerkungsreserve erreicht werden. Damit besteht die Chance, die Vorteile der Koppelmittelfreiheit in die Praxis einzufuehren. Die Ergebnisse bei Rohrwellen zum Nachweis von Querfehlern und bei den freien Wellen zur Winkel- und Senkrechteinschaltung von Transversalwellen sind im Laborstadium weitgehend abgesichert. (DG)Original Title
Forschung und Entwicklung auf dem Gebiet der elektrodynamischen Ultraschallerzeugung
Primary Subject
Source
Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung e.V., Muenchen (Germany, F.R.); FhG-Berichte; no. 3; 76 p; 1978; p. 66-73; Available from Frauenhofer-Gesellschaft zur Foerderung der Angewandten Forschung e.V., Muenchen, Germany, F.R
Record Type
Miscellaneous
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Primary Subject
Record Type
Journal Article
Journal
Hitachi Hyoron; v. 55(8); p. 844-848
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Propagation of ultrasound through a complex composite sample may exhibit phase interference between two or more sonic-rays if differences in transit time are less than the pulse length. The transit time spectrum of a test sample, equivalent to its impulse response, was derived through active-set deconvolution of ultrasound signals with, and without, the test sample. The aim of this study was to test the hypothesis that in cases where only the transmit ultrasound transducer’s digitally-coded excitation signal is available, hence not the input ultrasound signal without the test sample, incorporation of the transducer impulse response may increase both accuracy and precision of ultrasound transit time spectroscopy. A digital 1 MHz sinusoid signal was used to create an ultrasound pulse that was propagated through a 5 step-wedge acrylic sample immersed in water. Transit time spectra were obtained through deconvolution utilising an ultrasound input signal, along with a digital input signal, with and without incorporation of the transducer impulse response. Incorporation of the transducer impulse response reduced a quantitative measure of noise-to-signal ratio by a factor of 12. The paper has demonstrated the potential for increased accuracy and precision of transit time spectroscopy when the transducer impulse response is incorporated within active-set deconvolution analysis. (paper)
Primary Subject
Secondary Subject
Source
Available from http://dx.doi.org/10.1088/1361-6560/aad8fb; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Original Title
Evolution recente des methodes non destructives. Perspectives des possibilites du controle ultrasonore par l'utilisation des automatismes et des palpeurs focalises
Primary Subject
Record Type
Journal Article
Journal
Revue Pratique de Controle Industriel; v. 14(67); p. 31-33
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] This work describes an ultrasonic inspection procedure designed for verifying coarse-grained structure materials, which are commonly used on nuclear reactors. In this case, conventional phased array techniques cannot be used due to attenuating characteristics and backscattered noise from microstructures inside the material. Thus, synthetic aperture ultrasonic imaging (SAFT) is used for this approach in contact conditions. In order to increase energy transferred to the medium, synthetic transmit aperture is formed by several elements which generate a diverging wavefront equivalent to a virtual ultrasound source behind the transducer. On the other hand, the phase coherence technique has been applied to reduce more structural noise and improve the image quality. The beamforming process has been implemented over a GPU platform to reduce computing time
Primary Subject
Secondary Subject
Source
40. annual review of progress in quantitative nondestructive evaluation; Baltimore, MD (United States); 21-26 Jul 2013; 10. international conference on Barkhausen noise and micromagnetic testing; Baltimore, MD (United States); 21-26 Jul 2013; (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Literature Type
Conference
Journal
Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
External URLExternal URL
AbstractAbstract
[en] For the purpose of domestic production of ultrasonic transducer, experiments on material selection for backing and matching layer, and electrical impedance matching between transducer and equipment were performed. The characteristics of manufactured transducers with experimental results were analyzed and compared with foreign products. Through the evaluation of the transducers manufactured and the comparison with foreign products, it is confirmed that the transducers manufactured show the good performance characteristics and efficiency
Primary Subject
Source
12 refs, 17 figs, 8 tabs
Record Type
Journal Article
Journal
Journal of the Korean Society for Nondestructive Testing; ISSN 1225-7842;
; v. 7(1); p. 18-31

Country of publication
Publication YearPublication Year
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Published in summary form only
Original Title
Ultrassonografia: aplicacoes e desenvolvimento de transdutores
Primary Subject
Record Type
Journal Article
Journal
Integracao; v. 1(4); p. 7-8
Country of publication
Publication YearPublication Year
LanguageLanguage
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
1 | 2 | 3 | Next |