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HW4s - HW 4 solutions Q1(a E= 8 4.6 3.4 = = 340MPa 0.025...

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1 HW# 4- solutions Q1) (a) MPa E 340 01 . 0 4 . 3 015 . 0 025 . 0 6 . 4 8 = = - - = (b) They are shown on the graph (c) 3 / 1925 . 0 2 1 ) 0 035 . 0 ( ) 0 11 ( m MJ resilience of Modulus = × - × - = (d) mm L L L L mm mm y y y y y y x y x y 145 . 0 00725 . 0 20 / 00725 . 0 025 . 0 29 . 0 - = - × = × = = - = × - = × - = - = e e e n e e e n Width of specimen at 8MPa = 20mm – 0.145mm=19.855 mm
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