Materials for Civil and Construction Engineers (4th Edition)
4th Edition
ISBN: 9780134320533
Author: Michael S. Mamlouk, John P. Zaniewski
Publisher: PEARSON
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Chapter 1, Problem 1.34QP
A metal rod having a diameter of 10 mm is subjected to a repeated tensile load. The material of the rod has a tensile strength of 290 MPa and a fatigue failure behavior as shown in Figure 1.16. How many load repetitions can be applied to this rod before it fails if the magnitude of the load is (a) 5 kN and (b) 11 kN?
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2. A steel bar, whose cross section is 0.55
inch by 4.05 inches, was tested in tension. An
axial load of P = 30,500 lb. produced a
deformation of 0.105 inch over a gauge
length of 2.05 inches and a decrease of
0.0075 inch in the 0.55-inch thickness of the
bar.
*
Determine the lateral strain.
Your answer
Determine the axial strain.
Your answer
Determine the Poisson's rati v.
Your answer
Determine the decrease in the 4.05-in.
cross-sectional dimension (in inches). *
Your answer
Consider a metal bar 12.5 mm in diameter and 50 mm in length that is tested under uniaxial tension. The test results data are as follows:
Force (kN)
Final length (mm)
Final diameter (mm)
122
56,14
12,19
120
62,05
11,60
114
68,57
11,03
(a) Complete the following table:
Force (kN)
Final length (mm)
Final diameter (mm)
True stress (MPa)
True deformation (mm/mm)
122
56,14
12,19
120
62,05
11,60
114
68,57
11,03
(b) Determine the metal's work hardening coefficient.
(c) The most likely crystal structure for this metal is?
A round steel alloy bar with a diameter of 19 mm and a gauge length of 76 mm
was subjected to tension, with the results shown in Table P3.26. Using a
computer spreadsheet program, plot the stress-strain relationship. From the
graph, determine the Young's modulus of the steel alloy and the deformation
corresponding to a 37 kN load.
TABLE P3.26
Deformation,
Load, kN
mm
9
0.0286
18
0.0572
27
0.0859
36
0.1145
45
0.1431
54
0.1718
Chapter 1 Solutions
Materials for Civil and Construction Engineers (4th Edition)
Ch. 1 - State three examples of a static load application...Ch. 1 - A material has the stressstrain behavior shown in...Ch. 1 - A tensile load of 50.000 lb is applied to a metal...Ch. 1 - A tensile load of 190 kN is applied to a round...Ch. 1 - A cylinder with a 6.0 in. diameter and 12.0 in....Ch. 1 - A metal rod with 0.5 inch diameter is subjected to...Ch. 1 - A rectangular block of aluminum 30 mm 60 mm 90...Ch. 1 - A plastic cube with a 4 in. 4 in. 4 in. is...Ch. 1 - A material has a stressstrain relationship that...Ch. 1 - On a graph, show the stressstrain relationship...
Ch. 1 - The rectangular block shown in Figure P1.11 is...Ch. 1 - The rectangular metal block shown in Figure P1.11...Ch. 1 - A cylindrical rod with a length of 380 mm and a...Ch. 1 - A cylindrical rod with a radius of 0.3 in. and a...Ch. 1 - A cylindrical rod with a diameter of 15.24 mm and...Ch. 1 - The stressstrain relationship shown in Figure...Ch. 1 - A tension test performed on a metal specimen to...Ch. 1 - An alloy has a yield strength of 41 ksi, a tensile...Ch. 1 - Prob. 1.21QPCh. 1 - Figure P1.22 shows (i) elasticperfectly plastic...Ch. 1 - An elastoplastic material with strain hardening...Ch. 1 - A brace alloy rod having a cross sectional area of...Ch. 1 - A brass alloy rod having a cross sectional area of...Ch. 1 - A copper rod with a diameter of 19 mm, modulus of...Ch. 1 - A copper rod with a diameter of 0.5 in., modulus...Ch. 1 - Define the following material behavior and provide...Ch. 1 - An asphalt concrete cylindrical specimen with a...Ch. 1 - What are the differences between modulus of...Ch. 1 - Prob. 1.33QPCh. 1 - A metal rod having a diameter of 10 mm is...Ch. 1 - What is the factor of safety? On what basis is its...Ch. 1 - Prob. 1.36QPCh. 1 - Prob. 1.37QPCh. 1 - A steel rod, which is free to move, has a length...Ch. 1 - In Problem 1.38, if the rod is snugly fitted...Ch. 1 - A 4-m-long steel plate with a rectangular cross...Ch. 1 - Estimate the tensile strength required to prevent...Ch. 1 - Prob. 1.42QPCh. 1 - Briefly discuss the variability of construction...Ch. 1 - In order to evaluate the properties of a material,...Ch. 1 - A contractor claims that the mean compressive...Ch. 1 - A contractor claims that the mean compressive...Ch. 1 - Prob. 1.47QPCh. 1 - Prob. 1.48QPCh. 1 - Prob. 1.49QPCh. 1 - Briefly discuss the concept behind each of the...Ch. 1 - Referring to the dial gauge shown in Figure P1.51,...Ch. 1 - Repeat Problem 1.51 using the dial gauge shown in...Ch. 1 - Measurements should be reported to the nearest...Ch. 1 - During calibration of an LVDT, the data shown in...Ch. 1 - During calibration of an LVDT, the data shown in...
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