The Science and Engineering of Materials (MindTap Course List)
7th Edition
ISBN: 9781305076761
Author: Donald R. Askeland, Wendelin J. Wright
Publisher: Cengage Learning
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Chapter 6, Problem 6.21P
To determine
The initial necking point in the tensile test.
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motor supplies 200 kW at 6 Hz to flange A of the shaft shown in Figure. Gear B transfers 125 W of power to operating machinery in the factory, and the remaining power in the shaft is mansferred by gear D. Shafts (1) and (2) are solid aluminum (G = 28 GPa) shafts that have the same diameter and an allowable shear stress of t= 40 MPa. Shaft (3) is a solid steel (G = 80 GPa) shaft with an allowable shear stress of t = 55 MPa. Determine:
a) the minimum permissible diameter for aluminum shafts (1) and (2)
b) the minimum permissible diameter for steel shaft (3).
c) the rotation angle of gear D with respect to flange A if the shafts have the minimum permissible diameters as determined in (a) and (b).
First monthly exam
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300 m length. Determine the flow rate in pipe. Use moody chart.
Q2/ Assume a car's exhaust system can be approximated as 14 ft long and 0.125 ft-diameter cast-iron pipe (
= 0.00085 ft) with the equivalent of (6) regular 90° flanged elbows (KL = 0.3) and a muffler. The
muffler acts as a resistor with a loss coefficient of KL= 8.5. Determine the pressure at the beginning of the
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Q3/Liquid ammonia at -20°C is flowing through a 30 m long section of a 5 mm diameter copper tube(e =
1.5 × 10-6 m) at a rate of 0.15 kg/s. Determine the pressure drop and the head losses.
.μ= 2.36 × 10-4 kg/m.s)p = 665.1 kg/m³
2/Y
Y+1
2Cp
Q1/ Show that
Cda
Az x
P1
mactual
Cdf
Af
R/T₁
2pf(P1-P2-zxgxpf)
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and a temperature of 27 °C. Calculate the throat diameter of the choke for air flow velocity of 90 m/sec.
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The air pressure decreases with altitude as per relation h = 19200 log10 (1.013), where P is in bar. State
any assumptions made.
t = ts
P
0.0065h
Chapter 6 Solutions
The Science and Engineering of Materials (MindTap Course List)
Ch. 6 - Explain the role of mechanical properties in...Ch. 6 - Prob. 6.2PCh. 6 - Explain the importance of understanding mechanical...Ch. 6 - Prob. 6.4PCh. 6 - Prob. 6.5PCh. 6 - Prob. 6.6PCh. 6 - Prob. 6.7PCh. 6 - Prob. 6.8PCh. 6 - Prob. 6.9PCh. 6 - Prob. 6.10P
Ch. 6 - Prob. 6.11PCh. 6 - Draw a schematic diagram showing the development...Ch. 6 - Draw qualitative engineering stress-engineering...Ch. 6 - Prob. 6.14PCh. 6 - A cylindrical specimen of a titanium alloy having...Ch. 6 - A material with a diameter of 8 mm is pulled with...Ch. 6 - Prob. 6.17PCh. 6 - An 850-lb force is applied to a 0.15-in.diameter...Ch. 6 - A force of 100,000 N is applied to an iron bar...Ch. 6 - Prob. 6.20PCh. 6 - Prob. 6.21PCh. 6 - Prob. 6.22PCh. 6 - Prob. 6.23PCh. 6 - Prob. 6.24PCh. 6 - Prob. 6.25PCh. 6 - Prob. 6.26PCh. 6 - Prob. 6.27PCh. 6 - Prob. 6.28PCh. 6 - Prob. 6.29PCh. 6 - Prob. 6.30PCh. 6 - Prob. 6.31PCh. 6 - A force of 4000 lbs is applied to a cylindrical...Ch. 6 - A cylindrical bar of steel, 10 mm in diameter, is...Ch. 6 - Prob. 6.34PCh. 6 - A standard 0.505-in.-diameter tensile bar was...Ch. 6 - A specimen of an AISI-SAE type 416 stainless steel...Ch. 6 - The following data were collected from a test...Ch. 6 - The following data were collected from a standard...Ch. 6 - Prob. 6.39PCh. 6 - The following data were collected from a...Ch. 6 - The following data were collected from a...Ch. 6 - Consider the tensile stress strain diagrams in...Ch. 6 - Prob. 6.43PCh. 6 - Why is it that we often conduct a bend test on...Ch. 6 - Prob. 6.45PCh. 6 - A bar of Al2O3 that is 0.25 in. thick, 0.5 in....Ch. 6 - A three-point bend test is performed on a block of...Ch. 6 - Prob. 6.48PCh. 6 - Prob. 6.49PCh. 6 - Prob. 6.50PCh. 6 - Dislocations have a major effect on the plastic...Ch. 6 - Prob. 6.52PCh. 6 - Prob. 6.53PCh. 6 - Prob. 6.54PCh. 6 - Prob. 6.55PCh. 6 - Explain the terms “macrohardness” and...Ch. 6 - Prob. 6.57PCh. 6 - Prob. 6.58PCh. 6 - Prob. 6.59PCh. 6 - Prob. 6.60PCh. 6 - Prob. 6.61PCh. 6 - Prob. 6.62PCh. 6 - Prob. 6.63PCh. 6 - The following data were obtained from a series of...Ch. 6 - Plot the transition temperature versus manganese...Ch. 6 - Prob. 6.66PCh. 6 - Prob. 6.67PCh. 6 - Prob. 6.68PCh. 6 - Prob. 6.69PCh. 6 - Prob. 6.70PCh. 6 - Prob. 6.71PCh. 6 - Prob. 6.72PCh. 6 - Prob. 6.73PCh. 6 - Prob. 6.74PCh. 6 - Prob. 6.75PCh. 6 - Prob. 6.76PCh. 6 - Prob. 6.77PCh. 6 - Prob. 6.78PCh. 6 - What two equations are used to describe Bingham...Ch. 6 - Prob. 6.80PCh. 6 - Prob. 6.81PCh. 6 - Prob. 6.82PCh. 6 - Prob. 6.1KP
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