Title :
AE Signal Processing Study Based on HHT for GFRP
Author :
Li, Wei ; Wang, Yanru ; Jiang, Peng ; Dai, Guang
Author_Institution :
Coll. of Mech. Sci. & Eng., Daqing Pet. Inst. Daqing City, Daqing, China
Abstract :
In this paper, basic principles of Hilbert-Huang transformation and the theoretical basis, based on which Hilbert-Huang transformation can be applied to analysis acoustic emission signal of fiber reinforced plastics acquired during tensile tests, are expatiated simply. Moreover, through several practical signal processing examples, it is observed that time-frequency characteristics of AE signals are distinguished well at different stages of damage process. The results show that HHT can effectively retain inherent characteristics of signal sources, and it also has greater advantages in self-adaptive and segregation of time-frequency than other time-frequency analysis methods with good location and results visually.
Keywords :
Hilbert transforms; acoustic emission testing; acoustic signal processing; glass fibre reinforced plastics; resins; tensile testing; AE signal processing; GFRP; HHT; Hilbert-Huang transformation; acoustic emission signal; fiber reinforced plastics; glass fiber self-reinforcement polymeric resin; tensile testing; time-frequency analysis method; Acoustic emission; Acoustic materials; Acoustic signal detection; Acoustic signal processing; Acoustical engineering; Composite materials; Educational institutions; Signal analysis; Signal processing; Time frequency analysis;
Conference_Titel :
Image and Signal Processing, 2009. CISP '09. 2nd International Congress on
Conference_Location :
Tianjin
Print_ISBN :
978-1-4244-4129-7
Electronic_ISBN :
978-1-4244-4131-0
DOI :
10.1109/CISP.2009.5300988
