,(5 pts.] Match these basic materials structures with their definitions em long,
ID: 1766719 • Letter: #
Question
,(5 pts.] Match these basic materials structures with their definitions em long, entangled molecules of chained carbon a. biomaterial b. composites c. polymers typically a mixture of proteins, organic molecules, and inorganic additives atomic building blocks that are disorganized glasses stacked symmetrical atomic building blocks e. crystals combination of 2 or more materials types Problem #4. 15 pts.] A metal specimen with a rectangular cross (cold worked) until its final thickness is 5.0 mm. If the %CV-25% and the width does not change during deformation, what was the initial thickness? section 2.5 cm wide is deformed Cal Poy Pomona MTE 207Explanation / Answer
The cross section is rectangular and the width remains constant before and after working.
Old width Wo = 2.5 cm
New width Wn = 2.5 cm
Old thickness To = t
New thickness Tn= 0.5 cm
Old cross section area Ao = Wo * To
New cross section area An = Wn * Tn
%CW = ((Ao - Ai)/Ao) * 100
25 = ((2.5*t - 2.5*0.5)/ 2.5*t) * 100
Old thickness t = 0.666 cm
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