Title :
Noise diagnostics of composite materials by using spectral characteristics of electromagnetic emission
Author :
Koktavy, Pavel ; Trcka, Tomas ; Koktavy, Bohumil
Author_Institution :
Fac. of Electr. Eng. & Commun., Brno Univ. of Technol., Brno, Czech Republic
Abstract :
Our study is focused on the use of spectral characteristics of electromagnetic emission signals for damage assessment of mechanical loaded composite materials. We have developed a methodology for evaluation of the power spectral density of the crack electric dipole moment waveform based on the measured voltage at the capacitance sensor measurement circuit output. The obtained characteristics were studied in dependence on the applied force for the various loading conditions.
Keywords :
capacitance measurement; capacitive sensors; composite materials; cracks; electric moments; noise; reliability; voltage measurement; capacitance sensor measurement circuit output; crack electric dipole moment waveform; damage assessment; electromagnetic emission signal; mechanical loaded composite material; noise diagnostics; power spectral density evaluation; voltage measurement; Capacitance; Current measurement; Density measurement; Power measurement; Transfer functions; Voltage measurement; acoustic emission; composite material; crack; diagnostics; electric charge; electromagnetic emission;
Conference_Titel :
Noise and Fluctuations (ICNF), 2013 22nd International Conference on
Conference_Location :
Montpellier
Print_ISBN :
978-1-4799-0668-0
DOI :
10.1109/ICNF.2013.6578939
