Foundations of Materials Science and Engineering
6th Edition
ISBN: 9781259696558
Author: SMITH
Publisher: MCG
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Chapter 7.10, Problem 53SEP
To determine
The design parameter diameter for the cross section.
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Using the tensile test simulation tool,
a. generate the stress-strain curve for aluminum
b. Indicate the following points in the stress-strain curve for aluminum and give the corresponding values:
limit of proportionality
elastic limit
0.2% offset yield stress (include the graph illustrating how this was determined)
ultimate stress
fracture stress
c. Calculate modulus of elasticity.
d. compare aluminum with nylon (include the related graph) and answer the following:
Which has higher tensile strength? Provide the necessary values to support the answer.
Which is stiffer? Support your answer with calculations.
Compute the tensile strength and ductility (%
EL) of a cylindrical copper road if it is cold
worked such that the diameter is reduced from
15.2mm to 12.2mm.
jo 9:38
1. An aluminium rod of circular cross section is to withstand 250kN of tensile load for a structural application. The minimum length of the rod is 4.2m but must deform elastically to no more than 7mm when the tensile force is applied. Take that the engineering yield stress limit and the Young’s modulus of the material are 260 MPa and 70 GPa respectively.If a safety factor of 2 is adequate, design an appropriate rod and state why factor of safety is important in your analysis.
2. Explain the differences in the grain structure between a metal which has been cold worked and another same cold worked piece but has been fully re-crystallised. Why are small angle grain boundaries not as effective in interfering with the motion of dislocation as high angle grain boundaries?
Chapter 7 Solutions
Foundations of Materials Science and Engineering
Ch. 7.10 - What are the characteristics of the surface of a...Ch. 7.10 - Prob. 2KCPCh. 7.10 - Prob. 3KCPCh. 7.10 - Prob. 4KCPCh. 7.10 - Prob. 5KCPCh. 7.10 - Prob. 6KCPCh. 7.10 - Prob. 7KCPCh. 7.10 - Prob. 8KCPCh. 7.10 - Prob. 9KCPCh. 7.10 - How does the carbon content of a plain-carbon...
Ch. 7.10 - Describe a metal fatigue failure.Ch. 7.10 - What two distinct types of surface areas are...Ch. 7.10 - Prob. 13KCPCh. 7.10 - Prob. 14KCPCh. 7.10 - Prob. 15KCPCh. 7.10 - Describe the four basic structural changes that...Ch. 7.10 - Describe the four major factors that affect the...Ch. 7.10 - Prob. 18KCPCh. 7.10 - Prob. 19KCPCh. 7.10 - Prob. 20KCPCh. 7.10 - Prob. 21KCPCh. 7.10 - Determine the critical crack length for a through...Ch. 7.10 - Determine the critical crack length for a through...Ch. 7.10 - The critical stress intensity (KIC) for a material...Ch. 7.10 - What is the largest size (in mm) of internal...Ch. 7.10 - A Ti-6Al-4V alloy plate contains an internal...Ch. 7.10 - Using the equation KIC=fa, plot the fracture...Ch. 7.10 - (a) Determine the critical crack length (mm) for a...Ch. 7.10 - A fatigue test is made with a maximum stress of 25...Ch. 7.10 - A fatigue test is made with a mean stress of...Ch. 7.10 - A large, flat plate is subjected to...Ch. 7.10 - Prob. 32AAPCh. 7.10 - Refer to Problem 7.31: Compute the final critical...Ch. 7.10 - Prob. 34AAPCh. 7.10 - Prob. 35AAPCh. 7.10 - Equiaxed MAR-M 247 alloy (Fig. 7.31) is used to...Ch. 7.10 - Prob. 37AAPCh. 7.10 - If DS CM 247 LC alloy (middle graph of Fig. 7.31)...Ch. 7.10 - Prob. 39AAPCh. 7.10 - Prob. 40AAPCh. 7.10 - Prob. 41SEPCh. 7.10 - Prob. 42SEPCh. 7.10 - A Charpy V-notch specimen is tested by the...Ch. 7.10 - Prob. 44SEPCh. 7.10 - Prob. 45SEPCh. 7.10 - Prob. 46SEPCh. 7.10 - Prob. 47SEPCh. 7.10 - Prob. 48SEPCh. 7.10 - Prob. 49SEPCh. 7.10 - Prob. 50SEPCh. 7.10 - While driving your car, a small pebble hits your...Ch. 7.10 - Prob. 52SEPCh. 7.10 - Prob. 53SEPCh. 7.10 - Prob. 54SEPCh. 7.10 - Prob. 56SEPCh. 7.10 - Prob. 57SEPCh. 7.10 - Prob. 58SEPCh. 7.10 - Prob. 59SEPCh. 7.10 - The components in Figure P7.60 are high-strength...
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- A solid cylindrical metal of 130 cm tall and 30 mm thick is centrally bored for 0.3 m, the bore diameter is 1.5 cm. Under a tensile load of 40 kN, calculate the total change in length if the Young's modulus of metal is 200 GPa.arrow_forwardAt the proportional limit, a 24 mm thick x 69 mm wide bar elongates 6.8 mm under an axial load of 453 kN. The bar is 1.8 m long. If Poisson's ratio is 0.3 for the material, determine the change in width (in mm) of the bar. Hint: Your answer will be in the format: -X.XXXX of Note: Do not include units in your answer. flag Answer: Next page ious page HO L O 15 C ASUS VivoBookarrow_forwardCompare the torsional rigidities of the following sections: (a) a hollow tube 30 mm outside diameter and 1.5 mm thick (b) the same tube split along its length with a 1 mm gap (c) an equal leg angle section having the same perimeter and thickness as (b) (d) a square box section with side length 30 mm and I .5 mm wall thickness (e) a rectangular solid bar, side ratio 2.5 to I. having the same metal cross-sectional area as the hollow tube. Compare also the maximum stresses arising in each case.arrow_forward
- A load of 22 kips is gradually applied to a 2-in round rod, 10 ft long. The total elongation is observed to be 0.03 in. If the stretching is entirely elastic, A. what is the modulus of elasticity, and B. what material would you judge it to be, wrought iron or stainless steel? C. how much energy is absorbed by the rod? D. Suppose that the material is aluminum alloy 3003-H14 (Table AT 3, Faires); compute its elongation for the same load. Is this within elastic action?arrow_forwardDiameter 14 mm, length 100 mm aluminum wire sample, axial When a load of 80 kg is applied in the tensile direction, the change in length and Calculate the change in diameter.(Ealuminum=70 Gpa)arrow_forwardFloor joists are structural members which support flooring in structures, as in the diagram on the right. The floor sits upon the minor length of the joist, and the joists are set at equal spacing to reach the desired floor stiffness. How many 2x6 joists would it take to equal the floor stiffness of the same floor supported by ten (10) 2x12 joists of the same species?arrow_forward
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