Title :
Epoxy cure monitoring using ultrasonic spread spectrum binary signals
Author :
Liaukonis, Dobilas ; Aleksandrovas, Arturas ; Svilainis, Linas
Author_Institution :
Dept. of Electron. Eng., Kaunas Univ. of Technol., Kaunas, Lithuania
Abstract :
Procedure for dual component epoxy cure monitoring is presented. Accurate time of flight estimation was used employing the correlation processing. Several spread spectrum signals have been put in comparison with conventional pulse and toneburst signals. Experimental results presented indicate that reliable separation of curing phases can be established using both ultrasound velocity and attenuation measurements. Lowest velocity variation was produced by 4 MHz toneburst signal.
Keywords :
condition monitoring; correlation methods; curing; plastics; ultrasonic materials testing; attenuation measurements; correlation processing; curing; epoxy cure monitoring; time of flight estimation; ultrasonic spread spectrum binary signals; Acoustics; Attenuation; Curing; Estimation; Monitoring; Ultrasonic imaging; Ultrasonic variables measurement; curing process minitoring; spread spectrum signals; time of flight estimatiion; ultrasonic measurements;
Conference_Titel :
Information, Electronic and Electrical Engineering (AIEEE), 2014 IEEE 2nd Workshop on Advances in
Conference_Location :
Vilnius
DOI :
10.1109/AIEEE.2014.7020332
