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A steel alloy specimen having a rectangular cross section

A steel alloy specimen having a rectangular cross section

A steel alloy specimen having a rectangular cross section of dimensions 12.7 mm A? 6.4 mm (0.5 in. A? 0.25 in.) has the stress–strain behavior shown in figure. If this specimen is subjected to a tensile force of 38,000 N (8540lbf) then
(a) Determine the elastic and plastic strain values.
(b) If its original length is 460 mm (18.0 in.), what will be its final length after the load in part (a) is applied and thenreleased?

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