Influence of GFRP laminate‘s scarf repair parameters on its tensile properties

Abstract

Abstract:

Scarf repair approach is usually adopted to deal with a typical damage in GFRP （glass fiber reinforce polymer）laminate on a civil aviation aircraft. A systematic research is conducted on the influence of scarf repair key parameters such as step ratio, surface roughness and curing temperature upon its tensile properties. Experimental results reveal that scarf repair approach has a significant changing effect on the mechanical properties of GFRP laminated plate structure. Along with the increase of step ratio （from 1：10 to 1：60）, the tensile strength appears a trend of decrease following an initial increase. When step ratio is 1：40, the tensile strength reaches its peak, with a tensile strength retention rate of 51%. In the case of 1：40 step ratio, the tensile strength of repair specimen increases with an intensity of roughness on the surface of junction. Meanwhile, with the increase of curing temperature, tensile strength also presents a trend of increase after a decrease and the tensile strength of repair specimen reaches its maximum when the temperature is 250 ℉.

Key words: composite, scarf repair, mechanical property, curing temperature

CLC Number:

TQ327.3

LU Pengcheng, WANG Hongyang, LI Na, Su Jingxin. Influence of GFRP laminate‘s scarf repair parameters on its tensile properties[J]. .

References 9

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