Results 221 to 230 of about 83,700 (269)

Opposite Phased Transducer — Novel Type of Transducer

AIP Conference Proceedings, 2004
Defect sizing is an important task giving input to fracture mechanics evaluation. The exact evaluation of sound field is the key factor to analyse precisely defects in materials. Sizing accuracy is affected by the size of the sound field. There are several methods available for sizing: SAFT, Acoustic Holography, Tip diffraction, Amplitude drop. In SAFT
Kniazev, V., Kauppinen, Pentti, Pitkänen, Jorma   +3 more
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An Electrokinetic Transducer

Review of Scientific Instruments, 1948
A description is given of a transducer which utilizes, for the transformation of sonic to electrical energy, the electrokinetic potential developed by the movement of a fluid through a porous solid. The construction and calibration of the transducer are discussed, and results of measurements of the pressure fluctuations in oil pipe lines are presented.
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Reduction of transducer reverberations by transducer movement-determination of the optimal transducer displacement

Proceedings of IEEE Ultrasonics Symposium ULTSYM-94, 1994
Reverberations from reflections at the transducer surface are overlaid on first order echoes from deeper targets and sometimes obscure these heavily. A method to reduce this artifact consists of acquiring two scan lines in the same direction with the transducer displaced slightly.
null Nickel, null Torp, null Angelsen
openaire   +1 more source

Transducers III—Other Transducers

1996
Crystals have always had a fascination for people. Are not diamonds a girl’s best friend? Their perfect shapes, their colours and the way they can be grown from a clear solution have long had a fascination. They have been (and are) involved in magic and sorcery and ‘new age’ religion. But they also have considerable scientific importance.
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From IPMC Transducers to All-Organic Transducers

2013
This paper presents a summary about the research activity performed on characterizations and modeling of new polymeric transducers. More specifically, Ionic Polymer–Metal Composites (IPMCs) have been widely explored and a new class of totally organic transducers: Ionic Polymer-Polymer Composites (IP2Cs) have been introduced. The manufacturing technique,
DI PASQUALE, Giovanna, GRAZIANI, Salvatore, Umana E.   +2 more
openaire   +1 more source

Pseudo-minimal transducers: A transducer with proper elements

1998
The algorithm that we present here is an adaptation of the automata pseudo- minimization algorithm for finite-state transducer. After giving some definitions, we give an algorithm to build a pseudominimal transducer, that has an interesting property: each recognized word has a proper element.
Denis Maurel, Laurent Chauvier
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Weighted Tree Transducers

J. Autom. Lang. Comb., 2004
Journal of Automata, Languages and Combinatorics, Volume 9, Number 1, 2004, 31 ...
Zoltán Fülöp 0001, Heiko Vogler
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Electret transducer backplate, electret transducer, and method of making an electret transducer

The Journal of the Acoustical Society of America, 1982
An electret transducer backplate is made of a thermo-softening plastics material rendered electrically conducting by electrically conducting particles distributed therethrough. An electret foil diaphragm is mounted on the backplate and the relative flexural rigidities of the diaphragm and the backplate are such that, in use, the deflection of the ...
Adrian J. Morgan, John K. Williams, Ronald Else   +2 more
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Transducers are type‐converters

Software: Practice and Experience, 1984
AbstractThe nature of a transducer is shown to be a mapping between representations (internal and external), analogous to the mapping between internal representations provided by typeconversion. Examples of this idea are given through programs in Ada and Modula.
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The Wedged Transducer — A Transducer Design for Broad Band Characteristics

Ultrasonic Imaging, 1979
This paper presents a method of increasing the bandwidth of transducers feeding low acoustic impedance loads such as fluids and of electrically matching them over the full bandwidth. It consists of interposing between the transducer and the actual load, a wedge made out of a material having the desired acoustic impedance. The wedge angle is chosen such
openaire   +2 more sources