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Question 2.

A cylindrical bar is ½in diameter and 7 inches long. does not neck) until it has a diameter of 16 It is stretched under tension and 1 a. How long (inches) is it after stretching b, what is the elongation (%)? c. Which of th e aluminum alloys listed in Mechanical Properties table in the textbook front cover will be able to accommodate that stretching? d. Which aluminum alloys will not? e. Neglect ting any strain-hardening or strain-rate effects (and assuming all the alloys can be stretched), how much force (both Ibs. and tons) is necessary to perform the stretching for all the aluminum alloys and for all the carbon steel alloys listed in the Mechanical Properties table in the textbook front cover for stretching a V diameter bar? Make a table of this form Force (T) lloy 1100-0 1100-H14 Force (lbs.) (Hint: Force to deform is yield strength multiplied by area.) A sheet of 1020 Q&T steel (also see front cover of textbook) has a length of four feet. How long (inches) must it be stretched past four feet length in order to yield it to remove the residual stresses? (Hint: What strain is mecss to 21

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