Title :
Signal detection circuit of acoustic emission sensor using Pb-free (Na, K)NbO3 system ceramics
Author :
Park, Jichul ; Hwang, Lakhoon ; Byeon, Sunmin ; Yoo, Juhyun ; Jeong, Yeongho
Author_Institution :
Dept. of Electr. Eng., Semyung Univ., Jecheon, South Korea
Abstract :
In this study, the signal detection circuit of acoustic emission (AE) sensors was presented using Pb-free (Na, K)NbO3 system ceramics with excellent g33(=40.10× 10-3 Vm/N) piezoelectric voltage constant. Signal detection circuit was consisted of the impedance converter, high-pass filter, the signal amplification circuit, and rectifying circuit. The signal converted by impedance converter was amplified by amplifier. Also, the amplified signal was converted and displayed from AC to DC through rectifying circuit.
Keywords :
AC-DC power convertors; acoustic devices; acoustic emission; acoustic wave amplification; high-pass filters; impedance convertors; piezoceramics; piezoelectric devices; potassium compounds; rectifying circuits; signal detection; sodium compounds; (NaK)NbO3; AC-DC converter; Pb-free system ceramics; acoustic emission sensors; amplified signal; high-pass filter; impedance converter; piezoelectric voltage constant; rectifying circuit; signal amplification circuit; signal detection circuit; Acoustic emission; Ceramics; Gas insulation; Impedance; Partial discharges; Rectifying circuits; Signal detection; Acoustic Emission Sensor; Impedance; OPAMP;
Conference_Titel :
Applications of Ferroelectrics held jointly with 2012 European Conference on the Applications of Polar Dielectrics and 2012 International Symp Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials (ISAF/ECAPD/PFM), 2012 Intl Symp
Conference_Location :
Aveiro
Print_ISBN :
978-1-4673-2668-1
DOI :
10.1109/ISAF.2012.6297804
