Open AccessAcoustic emission-based real-time monitoring of fatigue damage evolution of T800 carbon fiber/bismaleimide composites
Author(s) -
Xuanhao Qi,
Yin Yang,
Woo Kang,
Q. Wang,
Guizhe Zhao
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/770/1/012087
Subject(s) - materials science , acoustic emission , fiber bragg grating , composite material , composite number , carbon fiber composite , adhesive , fiber , piezoelectricity , piezoelectric sensor , signal (programming language) , acoustics , computer science , layer (electronics) , optoelectronics , wavelength , physics , programming language
For the damage mode recognition in the fatigue coupon test of T800 carbon fiber/bismaleimide, the acoustic emission is employed. However, the latter application is hindered by noises produced by various environmental factors, which may suppress damage-induced ones. In this study, external noises are effectively reduced by the absorbing adhesive. For damage mode recognition, an integrated strategy is proposed, which features a combination of a characteristic signal extraction and damage mechanism analysis via piezoelectric and fiber Bragg grating sensors. The final verification shows that the different damage modes of the composite specimen can be clearly distinguished based on this method.