Below is the stress (o = Ee) vs strain (e = 4) behavior of oxygen-free copper (OFC) wires (W8) at 293 Kand 77 K compared to conventional (Convt) copper wires of the same diameter at 293 K.900800W8, 77 K700W8, 293 K600500400Conv".wire,293 K3002001000 1 234 56 7 89.E [%]Engineering stress [MPa] Calculate the elongation (elastic) that can be achieved when a 560-mm long OFC wire is subjected to a stressof 185 MPa at 293 K.Al =mmFor the same length and stress, what is the elongation at 77 K?Al =mm

Answered: Image /qna-images/answer/35c66158-19d2-46d1-8caf-a91c6b49b567.jpgTo calculate the elongation (elastic) that is achieved when a 560 mm long OFC wire is subjected to a stress of 185 MPa at 293 K. The corresponding strain can be calculated by the help of the graph shown above; ε185Mpa=1.2% hence; ε=∆LL1.2100 =∆L560∆L=560×1.2100 mm∆L=6.72 mm And; The elongation at 77 K is given as; ε77K=0.4 % hence; ε=∆LL0.4100 =∆L560∆L=560×0.4100 mm∆L=2.24 mm

Answered: Below is the stress (o = Ee) vs strain…

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Below is the stress (o = Ee) vs strain (e = 4) behavior of oxygen-free copper (OFC) wires (W8) at 293 K and 77 K compared to conventional (Convtl) copper wires of the same diameter at 293 K.

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Concept explainers

Free undamped vibrations

Whenever an object/system displaces in either side of its equilibrium position with the help of an external/internal means, then the object/system moves regularly or randomly on both sides of its equilibrium position. This motion is called vibration. Generally, there are three types of vibration: longitudinal vibration, transverse vibration, and torsional vibration.

Question

Below is the stress (o = Ee) vs strain (e = 4) behavior of oxygen-free copper (OFC) wires (W8) at 293 K
and 77 K compared to conventional (Convt) copper wires of the same diameter at 293 K.
900
800
W8, 77 K
700
W8, 293 K
600
500
400
Conv".
wire,
293 K
300
200
100
0 1 2
3
4 5
6 7 8
9.
E [%]
Engineering stress [MPa]

Calculate the elongation (elastic) that can be achieved when a 560-mm long OFC wire is subjected to a stress
of 185 MPa at 293 K.
Al =
mm
For the same length and stress, what is the elongation at 77 K?
Al =
mm

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