EBK MANUFACTURING PROCESSES FOR ENGINEE
6th Edition
ISBN: 9780134425115
Author: Schmid
Publisher: YUZU
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Chapter 2, Problem 2.59P
To determine
The shear stress and the normal stress acting on fracture surface.
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A 200mm long rod with a diameter of 50mm is loaded with a 4kN weight. The rod final length 201.314mm and final diameter 42mm the load at fracture is 2.5kN and the maximum load is 3.5KN.
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2. Calculate the strain
3. Calculate limit of proportionality
A specimen of steel 20 mm diameter with a gauge length of 200 mm is tested to destruction. It has an extension of 0.25 mm under a load of 80 kN and the load at elastic limit is 102 kN. The maximum load is 130 kN. The total extension at fracture is 56 mm and diameter at neck is 15 mm. Find
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(v)Ultimate tensile stress.
An 820 MPa (145,000 psi) stress is applied to a specimen of 4341 steel alloy, which has a plane strain fracture toughness of 45MPa squareroot (m). If the greatest surface crack is 0.95 mm (0.03 in) long, will this specimen fracture as a result? Assume that the parameter Y is 1.22.
Chapter 2 Solutions
EBK MANUFACTURING PROCESSES FOR ENGINEE
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