9) A (T) mm diameter, (U) cm long bar of 2014 T6 aluminium is loaded on...

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9) A (T) mm diameter, (U) cm long bar of 2014 T6 aluminium is loaded on one end and is expected to survive (V) cycles of loading. Maximum tensile force is F Newton and minimum tensile force is -F Newton. What is the maximum permissible load (F) that can be applied? (Safety factor is (Y), surface coefficient is 0.7, tensile strength is 700 MPa). 500 400 300 Stress amplitude (MN/m) 200 100 T T 1045 steel 2014-T6 aluminium 10 10 10 10 10 10% 10 Number of cycles, N 9) A (T) mm diameter, (U) cm long bar of 2014 T6 aluminium is loaded on one end and is expected to survive (V) cycles of loading. Maximum tensile force is F Newton and minimum tensile force is -F Newton. What is the maximum permissible load (F) that can be applied? (Safety factor is (Y), surface coefficient is 0.7, tensile strength is 700 MPa). 500 400 300 Stress amplitude (MN/m) 200 100 T T 1045 steel 2014-T6 aluminium 10 10 10 10 10 10% 10 Number of cycles, N