Q1) A ductile solid rod, of initial area (25mm²) and initial gauge length (8cm), show thistabular data during simple tension processTensile load in (N)Elongation (mm)4220.031017.71224317.334033.52544225.64783957.952845.46567.6031Determine the hardening parameters (n, k) of this rod numerically.(50M)

Step 1: Step 2: Step 3: Step 4:

Answered: Q1) A ductile solid rod, of initial…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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6. The following engineering stress-strain data were obtained for 0.2% C plain carbon steel. (a) Plot the engineering stress-strain curve (b) Determine the ultimate tensile strength for the alloy (c) Determine the percent elongation at fracture (d) Plot the true stress-strain curve Engineering strain, in./in. Engineering stress, ksi 30 0.001 55 0.002 60 0.005 68 0.01 72 0.02 74 0.04 75 0.06 76 0.08 75 0.1 73 0.12 69 0.14 65 0.16 56 0.18 51 0.19(fracture)
For a piece of copper alloy, a standard stress test was applied to it, the following data was collected, from which a stress-strain diagram must be generated, where as data it is known that the initial diameter of the element is 0.505in. The analysis must include the following: 1.Modulus of Elasticity and modulus of resilience. 2.Percentage of elongation. 3.Percentage of area reduction. 4.Real and engineering stress at fracture. It is known that after the specimen fractures, its dimensions in terms of length and diameter are 3.014 and 0.374in, respectively.
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.
Q1- Answer only one a or b a- Listed with the drawing (only) the types of phase diagrams and pointed all phases. b - Listed the types of nondestructive test method and explains one of methods which suitable for internal defects and give the advantage and dis advantage of these methods. Q2- The following data was obtained from a tensile test on Load (kN ) Extension (mm) 0.2 16 32 0.4 56 72 95 110 132 142 140 135 10.0 12.0 0.7 0.9 1.5 2.5 5.0 8.5 A specimen of 10mm diameter and gauge length 60mm. Determine the following:- 1-Draw the stress-strain curve. 2- Pointed on the curve only proof stress, ultimate tensile strength. Q3- Only Answer two branches. a- calculate the atomic backing factor for Bec. b- 10 mm diameter of Brinall hardness ball when the load 500 kgr and HB= 300 determined the diameter of indenter. C- The diminutions of the low alloy steel impact test sample as shown in fig below and the notched depth is 1.5 mm determine the impact toughness if the impact energy absorption at…
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ne following data were collected from a standard 0.505-in. diameter test specimen of a copper alloy (initial length (lo) 2.0 in.): Load (b)) 0.0 3000 Al (in) 0.0 0.00167 (a) the 0.2% offset yield strength; (b) the tensile strength; (c) the modulus of elasticity: 6000 0.00333 (d) the % elongation; (e) the % reduction in area; After fracture, the total length was 3.014 in. and the diameter was 0.374 in. Plot the engineering stress-strain curve and calculate. 10500 12000 9000 7500 0.26 0.040 0.00417 0.009 (1) the engineering stress at fracture; and (g) the modulus of resilience.. 12400 11400 1.02 0.50 ite. led sel.
Match the items in columns I and II. Column-I Column-II 1. Fluidity P. Charpy Q. Knoop 2. Microhardness R. Spiral test S. Cupping test 3. Formability 4. Toughness 5. Permeability (a) P-4, Q-5, R-3, S-2 (b) P-3, Q-5, R-1, S-4 (c) P-2, Q-4, R-3, S-5 (d) P-4, Q-2, R-1, S-3
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Cyclic Stresses (Fatigue); The S-N Curve 4. The fatigue data for a ductile cast iron are given as follows: Cycles to Failure Stress Amplitude [MPa (ksi)] 248 (36.0) 236 (34.2) 224 (32.5) 213 (30.9) 201 (29.1) 193 (28.0) 193 (28.0) 193 (28.0) 1 × 105 3 x 105 1 x 10⁰ 3 x 106 1 x 107 3 x 107 1 108 3 × 108 (a) Make an S-N plot (stress amplitude versus logarithm cycles to failure) using these data. (b) What is the fatigue limit for this alloy? (c) Determine fatigue lifetimes at stress amplitudes of 230 MPa (33,500 psi) and 175 MPa (25,000 psi). (d) Estimate fatigue strengths at 2 × 105 and 6 × 106 cycles.
Question 5: Following is tabulated data that were gathered from a series of Charpy impact tests on a tempered 4140 steel alloy. Temperature (°C) 100 75 50 25 0 -25 -50 -65 -75 -85 -100 -125 -150 -175 Impact Energy (J) 89.3 88.6 87.6 85.4 82.9 78.9 73.1 66.0 59.3 47.9 34.3 29.3 27.1 25.0 (a) Plot the data as impact energy versus temperature. (you can use Excel or other software). (b) Determine a ductile-to-brittle transition temperature as that temperature corresponding to the average of the maximum and minimum impact energies. (c) Determine a ductile-to-brittle transition temperature as that temperature at which the impact energy is 70 J.
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