"961-90610-5-5" . . . . . "In ultrasonic defectoscopy it is very difficult to detect flaw in materials with coarse-grain structure. The ultrasonic signals measured on these materials contain echoes which are very similar to fault echo. These echoes arise from grains which are contained in material. For detection of flaw various methods for suppressing of echoes from grains have to be used. In this work we used the method for filtering of ultrasonic signal based on discrete wavelet transform. For classification of ultrasonic signals in A-scan we used pattern recognition method called support vector machines. In this study we classify signals with fault echo, echo from weld and back-wall echo. Ultrasonic signals were measured on material used for constructing airplane engines. The experimental results indicate the performance of the proposed approach."@en . "Kreidl, Marcel" . "515487" . "RIV/68407700:21230/05:03110370" . "Discrete wavelet transform; Support vector machines; Ultrasonic testing"@en . "3"^^ . . "In ultrasonic defectoscopy it is very difficult to detect flaw in materials with coarse-grain structure. The ultrasonic signals measured on these materials contain echoes which are very similar to fault echo. These echoes arise from grains which are contained in material. For detection of flaw various methods for suppressing of echoes from grains have to be used. In this work we used the method for filtering of ultrasonic signal based on discrete wavelet transform. For classification of ultrasonic signals in A-scan we used pattern recognition method called support vector machines. In this study we classify signals with fault echo, echo from weld and back-wall echo. Ultrasonic signals were measured on material used for constructing airplane engines. The experimental results indicate the performance of the proposed approach." . "Application of Contemporary Non-Destructive Testing in Engineering - Conference Proceedings" . . . "Pr\u00E1ce popisuje metody pro klasifikaci ultrazvukov\u00FDch sign\u00E1lu. Pro klasifikaci jsou pou3ity toi typy mioen\u00FDch sign\u00E1lu: sign\u00E1l v m\u00EDsti s vadou, sign\u00E1l bez vady a sign\u00E1l v m\u00EDsti sv\u00E1ru. Sign\u00E1ly jsou klasifikov\u00E1ny metodou support vector machines, kter\u00E9 poedch\u00E1z\u00ED filtrace sign\u00E1lu pomoc\u00ED vlnkov\u00FDch paketu."@cs . . . . "The Slovenian Society for Non-Destructive Testing" . "Classification of Ultrasonic Signals" . "Classification of Ultrasonic Signals" . . "3"^^ . . . "[C028FCBB938D]" . . "27 ; 33" . . . "Portoro3" . "7"^^ . . . . "\u0160m\u00EDd, Radislav" . "Ljubljana" . "P(GD102/05/H032), Z(MSM6840770015)" . "2005-09-01+02:00"^^ . "Classification of Ultrasonic Signals"@en . "Klasifikace ultrazvukov\u00FDch sign\u00E1lu"@cs . "Matz, V\u00E1clav" . "21230" . "Klasifikace ultrazvukov\u00FDch sign\u00E1lu"@cs . "RIV/68407700:21230/05:03110370!RIV07-GA0-21230___" . "Classification of Ultrasonic Signals"@en . .