Question

Subject: Composite Materials

Determine the longitudinal modulus E₁ and longitudinal tensile strength F_1t of a unidirectional carbon/glass composite with the properties:

V_f = 0.45 , E_1f = 235 GPa , E_m = 70 Gpa , F_ft = 3500 MPa , F_mt = 140 MPa

(*Note: Strength is defined as the composite stress at failure initiation in one of the phases.)

Determine the longitudinal modulus Ej and longi- tudinal tensile strength F, of a unidirectional carbon/ 5.3 glass composite with the properties V 0.45 Ey 235 GPa (34 Msi) Em-70 GPa (10 Msi) F 3500 MPa (510 ksi) F140 MPa (20 ksi) (Note: Strength is defined as the composite stress at failure initiation in one of the phases.)

Answer 1