Materials Science And Engineering Properties
Materials Science And Engineering Properties
1st Edition
ISBN: 9781111988609
Author: Charles Gilmore
Publisher: Cengage Learning
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Chapter 6, Problem 13ETSQ
To determine

The test not successful for brittle ceramic material.

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The (G-E) diagram obtained in the tensile test performed on a metal sample with a diameter of 16 mm is as follows. The loads at points A, B and C and the elongation measured on l. 16 cm gauge length were determined as follows: B A B C Load (kgf) 4800 8400 7200 Elongation (mm) 0.192 28.8 38.4 c) Calculate the fracture work and the maximum elastic energy the metal rod can store. d) Find the cross-sectional area of a 6 m long rod made of this metal such that it can carry 12 tons of load with 2 times the safety of yield strength. How long does the rod extend under this load?
Question 4. A tensile test is carried out on a bar of mild steel of diameter 2 cm. The bar yields under a load of 80 Kn. It reaches a maximum load of 150 kN, and breaks finally at a load of 70 kN. Estimate: a)the tensile stress at the yield point b)the ultimate tensile stress c)the average stress at the breaking point if the diameter of the fractured neck is 1 cm.
A single crystal of a metal is oriented for a tensile test such that its slip plane normal makes an angle of 64.0° with the tensile axis. Three possible slip directions make angles of 30°, 48°, and 78° with the same tensile axis. (a) Which of these three slip directions is most favored? i (b) If plastic deformation begins at a tensile stress of 1.3 MPa (188.6 psi), determine the critical resolved shear stress for this metal. i MPа

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Materials Science And Engineering Properties

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