192 Failure Theories of a Lamina Vf=0.45 oT 1062 MPa E1=38.6GPa of =610MPa E2=8.27GPa o =31MPa 12=0.26 =118MPa G12=4.14GPa 72 MPa Problem 10.7 Repeat Problem 10.6 using the maximum strain failure theory instead of the maximum stress failure theory. Problem 10.8 Repeat Problem 10.6 using the Tsai-Hill failure theory instead of the maxi- mum stress failure theory. Problem 10.9 Repeat Problem 10.6 using the Tsai-Wu failure theory instead of the maxi- mum stress failure theory. MATLAB Problem 10.10 Use MATLAB to plot the four failure envelopes using the strengths given in Problem 10.6.192 Failure Theories of a Lamina V f = 0.45 σT 1 = 1062 MPa E1 = 38.6 GPa σC 1 = 610 MPa E2 = 8.27 GPa σT 2 = 31 MPa ν12 = 0.26 σC 2 = 118 MPa G12 = 4.14 GPa τ F 12 = 72 MPa Problem 10.7 Repeat Problem 10.6 using the maximum strain failure theory instead of the maximum stress failure theory. Problem 10.8 Repeat Problem 10.6 using the Tsai-Hill failure theory instead of the maximum stress failure theory. Problem 10.9 Repeat Problem 10.6 using the Tsai-Wu failure theory instead of the maximum stress failure theory. MATLAB Problem 10.10 Use MATLAB to plot the four failure envelopes using the strengths given in Problem 10.6