On the fatigue response of a bonded repaired aerospace composite using thermography

GRAMMATIKOS, Sotirios A., KORDATOS, Evangelos, MATIKAS, Theodore E. and PAIPETIS, Alkiviadis S. (2018). On the fatigue response of a bonded repaired aerospace composite using thermography. Composite Structures, 188, 461-469.

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Abstract

Lock-in thermography was employed to investigate the repair efficiency of a bonded repaired aerospace composite subjected to step-wise cycling mechanical loading. The studied component (substrate) was artificially damaged with a 5 mm circular notch and subsequently repaired with a tapered bonded patch. Critical and sub-critical damage of the repaired component was monitored via thermography during 5 Hz tension–tension fatigue. The examination of the acquired thermographs enabled the identification of the patch debonding propagation as well as the quantification of the stress magnification at the patch ends and the locus of the circular notch. It was found that fatigue mechanical loading yields both thermoelastic and hysterestic phenomena with the latter being more prominent prior to the failure of the studied repaired component.

Item Type:	Article
Research Institute, Centre or Group - Does NOT include content added after October 2018:	Materials and Engineering Research Institute > Modelling Research Centre > Microsystems and Machine Vision Laboratory
Identification Number:	https://doi.org/10.1016/j.compstruct.2018.01.035
Page Range:	461-469
Depositing User:	Jill Hazard
Date Deposited:	13 Feb 2018 15:41
Last Modified:	18 Mar 2021 15:31
URI:	https://shura.shu.ac.uk/id/eprint/18662

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