FUND MAT SCI+ENG ACCESS+EPUB
FUND MAT SCI+ENG ACCESS+EPUB
5th Edition
ISBN: 9781119662815
Author: Callister
Publisher: WILEY
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Chapter 11.17, Problem 42QP
To determine

The values of constants n and k for the crystallization of polypropylene at 150°C .

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1.4 (A). Two forkend pieces are to be joined together by a single steel pin of 25mm diameter and they are required to transmit 50 kN. Determine the minimum cross-sectional area of material required in one branch of either fork if the stress in the fork material is not to exceed 180 MN/m2. What will be the maximum shear stress in the pin? C1.39 x 10e4mZ; 50.9MN/mZ.] 10:41
1.2 (A). A steel tube, 25 mm outside diameter and 12mm inside diameter, cames an axial tensile load of 40 kN. What will be the stress in the bar? What further increase in load is possible if the stress in the bar is limited to 225 MN/mZ? [lo6 MN/m3; 45 kN.1
1.11 (a) A test piece is cut from a brass bar and subjected to a tensile test. With a load of 6.4 kN the test piece, of diameter 11.28 mm, extends by 0.04 mm over a gauge length of 50 mm. Determine: (i) the stress, (ii) the strain, (hi) the modulus of elasticity. (b) A spacer is turned from the same bar. The spacer has a diameter of 28 mm and a length of 250mm. both measurements being made at 20°C. The temperature of the spacer is then increased to 100°C, the natural expansion being entirely prevented. Taking the coefficient of linear expansion to be 18 x 10-6/"C determine: (i) the stress in the spacer, (ii) the compressive load on the spacer. [C.G.] [64MN/m2, 0.0008, 80GN/m2, 115.2 MN/m2, 71 KN.] 10:41
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