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Supriyadi, Yedi R
Mesin
Mechanical Engineering

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PENGARUH ARAH SERAT TERHADAP FAKTOR INTENSITAS TEGANGAN PADA UNIDIRECTIONAL LAMINA YANG MENGANDUNG CENTER CRACK Puja, IGN Wiratmaja; Supriyadi, Yedi R
Mesin Vol 15, No 2 (2000)
Publisher : Mesin

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Abstract

This paper presents the stress intensity factor (SIF) analysis for unidirectional fiber-matrix lamina containing center crack under uniaxial loading. Several variables are considered on the influence to the stress intensification factor i.e. fiber direction,θ, crack dimension parameter, 2a/L, fiber and matrix volume fraction, Vf, Vm, fiber and matrix stiffness ration, Ef/Em, and lamina thickness. The stress-strain equations for the lamina are derived using micromechanic approach. The governing equations are solved numerically using the finite element method with triangular type element. The element stifiness matrix is obtained using the polynomial shape functions. The software to calculate stress-strain in the lamina containing center crack is developed. Case studies jor numerical purposes consider the carbon-epoagz lamina with carbon type P-100. Numerical results for carbon epoxy lamina are presented in graphical form of SIF as a fimction of the fiber direction, fiber matrix stifihess ratio and volume ratio, and crack geometry.
Co-Authors IGN Wiratmaja Puja