ANALYSIS ON DAMAGE EVOLVEMENT OF FIBER REINFORCED POLYMER BY WEIBULL PROBABILITY DISTRIBUTION

Abstract

Abstract: The two-parameter Weibull distribution is first recommended for modeling both strength and stiffness properties by using statistical analysis and the goodness-of-fit in this paper. Based on the relationship between damage and tensile strength, a model of damage evolvement for fiber reinforced polymer(FRP) was founded. Combining existing experimental data and linear regression method, damage evolvement equation of FRP for different layers were given out, and it is indicated that the tensile strength was reduced with the increase of FRP layers, according to the same damage. And, the tensile strength of FRP with one layer is 10%, 20% and 25% higher than that with two,three and four layers respectively. Whereas, the infulence of additional layers on modulus can be neglected. Finally, a modified coefficient is suggested to take the effect of additional layers into consideration, and the value can be served as reference for strengthening design.

Key words: fiber reinforced polymer, damage evolvement, Weibull probability distribution, tensile strength, modulus

CLC Number:

TB332
TJ021

WI Yi-bin. ANALYSIS ON DAMAGE EVOLVEMENT OF FIBER REINFORCED POLYMER BY WEIBULL PROBABILITY DISTRIBUTION[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(8): 49-53.

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