Application of fuzzy pattern recognition in felting quality ultrasonic detection of composite material

Base on the signal of composite material felting quality in ultrasonic detection, the detection principle of ultrasonic pulse reflection echo method and the transmitting process of ultrasonic in two types of medium that is made by different material are analyzed in detail. Echo signal of detection u...

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Vydané v:2009 9th International Conference on Electronic Measurement and Instruments s. 3-848 - 3-851
Hlavní autori: Pengfei Zhang, Runjing Zhou
Médium: Konferenčný príspevok..
Jazyk:English
Vydavateľské údaje: IEEE 01.08.2009
Predmet:
Algorithm design and analysis
Attenuation
Composite materials
felting defect
Frequency domain analysis
fuzzy pattern recognition
Pattern analysis
Pattern recognition
Reflection
Signal analysis
Signal detection
Signal processing
ultrasonic detection
ISBN:1424438632, 9781424438631
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Popis
Shrnutí:Base on the signal of composite material felting quality in ultrasonic detection, the detection principle of ultrasonic pulse reflection echo method and the transmitting process of ultrasonic in two types of medium that is made by different material are analyzed in detail. Echo signal of detection ultrasonic carries the information of interface felting quality. The fuzzy pattern recognition method is used for felting quality recognition in this paper. By analyzing the characteristic of time and frequency domain of echo signal, attenuation coefficient, signal energy and amplitudes are calculated as characteristic values, and a fuzzy pattern recognition algorithm is designed to judge felting quality by the principle of choosing the nearest. Experimental results show that the algorithm is precise for recognition of felting quality.
ISBN:1424438632
9781424438631
DOI:10.1109/ICEMI.2009.5274190