2. A 10 mm diameter cylindrical specimen of an aluminium alloy is loaded in uniaxial tension in a testing machine. a) If the specimen begins to yield at a load of 30 kN, what is the yield stress of the material? b) At the point where yielding begins, the measured increase in length between two points initially 50 mm apart is 0.27 mm. At what strain does yielding occur? c) If the load-deflection curve is linear up to the yield point, what is the elastic modulus of the material? d) If the diameter of the specimen was reduced by 18 um at the yield point, what is the Poisson's ratio of the material? [ans.: (a) 382 MPa; (b) 5.4E-3; (c) 70.7 GPa; (d) 0.333]
2. A 10 mm diameter cylindrical specimen of an aluminium alloy is loaded in uniaxial tension in a testing machine. a) If the specimen begins to yield at a load of 30 kN, what is the yield stress of the material? b) At the point where yielding begins, the measured increase in length between two points initially 50 mm apart is 0.27 mm. At what strain does yielding occur? c) If the load-deflection curve is linear up to the yield point, what is the elastic modulus of the material? d) If the diameter of the specimen was reduced by 18 um at the yield point, what is the Poisson's ratio of the material? [ans.: (a) 382 MPa; (b) 5.4E-3; (c) 70.7 GPa; (d) 0.333]
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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![2. A 10 mm diameter cylindrical specimen of an aluminium alloy is loaded in uniaxial tension
in a testing machine.
a) If the specimen begins to yield at a load of 30 kN, what is the yield stress of the material?
b) At the point where yielding begins, the measured increase in length between two points
initially 50 mm apart is 0.27 mm. At what strain does yielding occur?
c) If the load-deflection curve is linear up to the yield point, what is the elastic modulus of
the material?
d) If the diameter of the specimen was reduced by 18 um at the yield point, what is the
Poisson's ratio of the material?
[ans.: (a) 382 MPa; (b) 5.4E-3; (c) 70.7 GPa; (d) 0.333]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9fd29648-c7f6-4a04-b131-11a631701a0d%2Fb8a978db-4535-4842-8090-20540e85524e%2F0uavbj2_processed.jpeg&w=3840&q=75)
Transcribed Image Text:2. A 10 mm diameter cylindrical specimen of an aluminium alloy is loaded in uniaxial tension
in a testing machine.
a) If the specimen begins to yield at a load of 30 kN, what is the yield stress of the material?
b) At the point where yielding begins, the measured increase in length between two points
initially 50 mm apart is 0.27 mm. At what strain does yielding occur?
c) If the load-deflection curve is linear up to the yield point, what is the elastic modulus of
the material?
d) If the diameter of the specimen was reduced by 18 um at the yield point, what is the
Poisson's ratio of the material?
[ans.: (a) 382 MPa; (b) 5.4E-3; (c) 70.7 GPa; (d) 0.333]
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