The Impact Degrees of Basic Parameters on Repair Performance in Composite Patch Applications

Year 2019, Volume: 15 Issue: 2, 187 - 191, 30.06.2019

Sefa Burak Yücel Memet Zor Halit Doğan Mustafa Karamolla

https://doi.org/10.18466/cbayarfbe.498884

Abstract

In
this study, for composite patch repairs, the impact degrees of patch
configuration and patch sizes on repair performance were determined and
compared with each other. First, stress intensity factor (SIF) values were
calculated by using the Finite Element Method for tensile loading in an
aluminum plate with center cracks, in unpatched situation. In this model, the
repair was made by forming single and double sided patches and adhesive volumes
too. The SIF values are recalculated for different patch thicknesses, widths,
and crack lengths. The criterion that determines the impact degrees of the
examined parameters was accepted to be the reduction rate in the SIF values.
The results show that even the most disadvantageous patch application
contributes significantly to the repair performance and that the application
itself is the most effective factor. The second most effective parameter is
patch configuration; the patch sizes have much less impact degree

Keywords

Stress intensity factor, composite patch, repair, fracture mechanics, finite element method

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