60 50 10.79 Calculate the percentage increase in the mechanical properties of reinforced nylon from the data given in Fig 10.19. Flexural modulus (psi x 106) 40 Tensile strength (psi x 103) 400 Carbon fibers 300 200 30 32 20 10 0 0 Long glass fibers Short glass fibers 10 T T T 0 20 30 40 Reinforcement (%) 40 40 Carbon fibers Long and short glass fibers 30 30 20 20 10 GPa 100 Flexural strength (psi 103) MPa Impact energy (ft-lb/in.) 5 + 0 10 6 Long glass fibers Short glass fibers Carbon fibers 300 200 100 J/m 0 20 30 40 Reinforcement (%) 30 60 50 Carbon fibers Long glass fibers 400 300 Short glass fibers 200 20 10 100 0 10 0 20 30 40 Reinforcement (%) T 0 0 10 20 30 40 Reinforcement (%) FIGURE 10.19 Effect of the percentage of reinforcing fibers and fiber length on the mechanical properties of reinforced nylon. Note the significant improvement with increasing percentage of fiber reinforcement. Source: Courtesy of Wilson Fiberfill International. MPa