Research on damage location of GFRP composites based on Morlet wavelet analysis

Author

Ni, Junfang ; Yu, Yu

Author_Institution

Sch. of Mechatron., Soochow Univ., Suzhou

fYear

2008

fDate

25-27 June 2008

Firstpage

1907

Lastpage

1911

Abstract

The passive structural health monitoring system is built based on the theory of acoustic emission in this paper. According to dispersion properties of the Lamb wave propagated in the thin materials, Morlet wavelet transform and energy wave crest are used to calculate the time delay among different sensors. Structural damage locations of glass fiber reinforced composites (GFRP) H60 and P60 are researched comparison to aluminum thin board.

Keywords

acoustic emission testing; condition monitoring; glass fibre reinforced composites; structural engineering; surface acoustic waves; wavelet transforms; GFRP composites; H60; Lamb wave propagation; Morlet wavelet analysis; Morlet wavelet transform; P60; aluminum thin board; damage location; glass fiber reinforced composites; passive structural health monitoring system; structural damage locations; Acoustic emission; Acoustic propagation; Acoustic sensors; Delay effects; Glass; Monitoring; Optical fiber sensors; Optical fiber theory; Wavelet analysis; Wavelet transforms; Lamb wave; Morlet wavelet transform; Passive monitoring; Time delay;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Control and Automation, 2008. WCICA 2008. 7th World Congress on

Conference_Location

Chongqing

Print_ISBN

978-1-4244-2113-8

Electronic_ISBN

978-1-4244-2114-5

Type

conf

DOI

10.1109/WCICA.2008.4593215

Filename

4593215