Noise diagnostics of advanced composite materials for structural applications

Author

Koktavy, Pavel ; Trcka, Tomas ; Koktavy, Bohumil

Author_Institution

Fac. of Electr. Eng. & Commun., Brno Univ. of Technol., Brno, Czech Republic

fYear

2011

fDate

12-16 June 2011

Firstpage

84

Lastpage

87

Abstract

Our study is focused on noise diagnostics of an advanced composite material for structural applications called extren, which consists of a combination of a fibre glass reinforcement and a resin binder. Electromagnetic and acoustic emission signals appear during mechanical loading of the material under investigation. They carry information about micro-cracks generated in tested materials. We made long-time simultaneous multi-channel measurements of both signals for various loading conditions, carried out time development of noise spectrum, evaluated parameters of EME and AE events, studied their time development, correlations between them and made statistical analyses of signals and their parameters.

Keywords

acoustic emission; glass fibre reinforced plastics; microcracks; noise; resins; statistical analysis; SiO₂; acoustic emission signals; advanced composite material; electromagnetic emission signals; extren; fibre glass reinforcement; mechanical loading; microcracks; noise diagnostics; noise spectrum; resin binder; statistical analysis; Acoustic emission; Composite materials; Electromagnetics; Noise; Spectrogram; Time measurement; acoustic emission; composite material; crack; diagnostics; electric charge; electromagnetic emission;

fLanguage

English

Publisher

ieee

Conference_Titel

Noise and Fluctuations (ICNF), 2011 21st International Conference on

Conference_Location

Toronto, ON

Print_ISBN

978-1-4577-0189-4

Type

conf

DOI

10.1109/ICNF.2011.5994391

Filename

5994391