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National Repository of Grey Literature 191 records found  beginprevious181 - 190next  jump to record: Search took 0.01 seconds. 
Acoustic emission and feature subset selection based on sensitivity analysis
 Chlada, Milan ; Mrázová, I. ; Převorovský, Zdeněk
Technical report describes several methods of feature subset selection based on sensitivity analysis of neural networks.
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Ultrasonic transducer of dynamic friction
 Převorovský, Zdeněk ; Fouant, Y. ; Převorovský, David ; Asserin, J.
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Possibility of damage degree analysis of cyclic loaded ceramics with acoustic emission technique using
 Horský, J. ; Kotoul, M. ; Mazal, P. ; Kotek, Vladimír
A preliminary study of acoustic emission as a way of sensing damage in cemented carbides WC-Co and alumina/zirconia ceramics in low cycle compression-compression conditions was performed. Significant differences in acoustic emission data gathered on cemented carbides samples and alumina/zirconia ceramics samples were observed. The goal of further research is proposed
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Nondestructive evaluation of phase transformations in Cu based shape memory alloys by ultrasonic techniques
 Landa, Michal ; Chlada, Milan ; Převorovský, Zdeněk ; Novák, V.
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Proceedings: Ultrasonics and acoustic emission. 35th international conference
 Lokajíček, Tomáš ; Jiříček, O.
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The effect of grain size and other fabric parameters on the acoustic emission characteristics of stressed granitic rocks
 Přikryl, R. ; Lokajíček, Tomáš
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Hodnocení akustické emise zatěžovaných vzorků jako prognostického parametru totálního porušení
 Rudajev, Vladimír ; Lokajíček, Tomáš ; Vilhelm, Jan ; Číž, Radim
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Interface card for multichannel processing of acoustic emission signals
 Lokajíček, Tomáš ; Vlk, J.
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Measurement and analysis of vibration and acoustic emission of railway wheel set with and without optimized dampers
 Pešek, Luděk ; Veselý, Jan ; Vaněk, František ; Cibulka, Jan
The aim of this work was to propose a method for experimental verification of vibro-acoustic damping elements of the railway wheel-set. There were dealt with 4 solutions of the wheels. For these solutions, the three kinds of dynamic excitation were proposed. The measurement of acousti prressure and acoustic internsity was carried out in selected points of the wheel surounding.
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Korekce parametrů signálu AE pomocí neuronových sítí
 Chlada, Milan ; Převorovský, Zdeněk ; Vodička, Josef
In the contribution, the new approach for conversion of signal parameters, evaluated at various transducers, to one reference location in source vicinity is described. This reduced inverse problem is solved using artificial neural networks.
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