Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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Q.Define the slip and show the effect of slip on velocity ratio.
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- 8.15 List four major differences between defor- mation by twinning and deformation by slip relative to mechanism. conditions of occur- rence, and final result. 8.17 Briefly explain why HCP metals are typically more brittle than FCC and BCC metals. 8.5 a) Define a slip system. ) Do all Do all metals have the same slip system? Why or why not? " 8.42 Briefly explain how each of the following influences the tensile modulus of a semicrys- talline polymer and why: (a) molecular weight; (b) degree of crystallinity; (c) deformation by drawing: (d) annealing of an undeformed material; (e) annealing of a drawn material.arrow_forwardcreep is testing under fluctuating cyclic stresses Select one: True Falsearrow_forwardمختبر Q1/a_ Assume a Brinell test uses a 10 mm steel ball and 3000 kg Joad. If the value of Brinell hardness number is 302. A) What is the diameter of the spherical impression on steel test piece? B) What are the sources of errors encountered in hardness test?arrow_forward
- Explain the purpose of the v-notch on the specimen for Charpy Test.arrow_forwardWhy do we need to calibrate temperature measuring devices?arrow_forward6. In a plot of the variation of stress with time in a fatigue test, what does the double arrow line indicate? (a) Fatigue limit.. (b) Range of stress. (c) Mean stress. (d) Stress amplitude. Time I +arrow_forward
- 7-5arrow_forwardProject 2: Table 3 & 4 shows the fatigue data for two different materials to be used for an automobile rotating parts at an average rotational speed of 750 revolutions per minute: Stress in Mpa 170 148 130 114 92 80 74 Table 3: Summary of fatigue data part 1 Number of cycles 37000 100000 300000 1000000 10000000 100000000 1000000000arrow_forwardViscosity (Pa-s) 400 1016 1014 1012 1010 108 105 104 10² 1 200 800 Borosilicate glass Temperature (°F) 1200 1600 2000 96% silica glass Working range Melting point 400 600 Fused silica 2400 2800 3:200 Strain point Annealing point Softening point Working point Soda-lime glass 1018 1016 1014 1012 1010 108 106 104 10² 800 1000 1200 1400 1600 1800 Temperature (°C) Viscosity (P)arrow_forward
- The following data were obtained from the tensile test of Aluminum alloy. The initial diameter of testspecimen was 0.505 inch and gauge length was 2.0 inch. Plot the stress strain diagram and determine(a) Proportional Limit (b) Modulus of Elasticity (c) Yield Stress at 0.2% offset (d) Ultimate Stress and(e) Nominal Rupture Stress.arrow_forwardNeed help on this Qarrow_forward10. Measure the diameter of impression using the profile projector and compute for the hardness number using the formula: Where: 2P P – Applied Load D - Diameter of steel ball (8.0 mm) BHN «D(D- /D² – d² d - Ave. diameter of indentation | Raw data: Diameter Specimen (carbon steel) d1 d2 Air cooled 5.13 5.22 Oil quenched Water quenched 4.12 4.36 3.74 3.81 Note: All dimensions are in mm.arrow_forward
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