Determine the longitudinal Young’s modulus E1 and longitudinal tensile strength F1t of a unidirectional E-glass/epoxy composite with the constituent properties Fiber volume concentration: 0.65 f c = Fiber modulus: 69 GPa Ef = Matrix modulus: 3.45 GPa E m = Fiber tensile strength: 3,450 MPa Fft = Matrix tensile strength: 104 MPa

Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.