Foundations of Materials Science and Engineering
6th Edition
ISBN: 9781259696558
Author: SMITH
Publisher: MCG
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Chapter 6.13, Problem 68SEP
To determine
The material for Robotic arm using the figure 6.23.
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Both yield strength and ultimate tensile strength exhibit the ability of a material to
withstand a certain level of load. Which parameter do you prefer to use as a design parameter
for a proper selection of materials for structural applications? Explain
From list of the materials in the table above, please explain :
1. Which material has the greatest elongation? Explain your reason.
2. Which material has the highest strength? Explain your reason.
3. Which the most brittle material? Explain your reason.
4. Which the most rigid material? Explain your reason.
5. Which materials are most easily deforms plastically? Explain your reason.
6. If the material with cylinder form has a diameter of 10 mm and loaded with a mass of 2600 kg as shown in the picture above.
7. Which material you choose for cylinder to be able to withstand the load and will not have the permanent extension?
8. Which material is used, if the cylinder diameter will have a permanent reduction?
9. Which material is used, if the cylinder will fail?
CASE STUDY
A material is to be selected for the main landing-gear support for a carrier-based navy airplane. Both weight and size of the support are important considerations, as well as minimal deflection under normal landing conditions. The support must also be able to handle impact loading, both under normal landing conditions and under extreme emergency controlled-crash-landing conditions. Under crash-landing conditions permanent deformations are acceptable, but separation into pieces is not acceptable. What candidate materials would you suggest for this application?
Chapter 6 Solutions
Foundations of Materials Science and Engineering
Ch. 6.13 - (a) How are metal alloys made by the casting...Ch. 6.13 - Why are cast metal sheet ingots hot-rolled first...Ch. 6.13 - What type of heat treatment is given to the rolled...Ch. 6.13 - Describe and illustrate the following types of...Ch. 6.13 - Describe the forging process. What is the...Ch. 6.13 - What is the difference between open-die and...Ch. 6.13 - Describe the wire-drawing process. Why is it...Ch. 6.13 - Distinguish between elastic and plastic...Ch. 6.13 - Define (a) engineering stress and strain and (b)...Ch. 6.13 - Define (a) modulus of elasticity, (b) yield...
Ch. 6.13 - (a) Define the hardness of a metal. (b) How is the...Ch. 6.13 - What types of indenters are used in (a) the...Ch. 6.13 - What are slipbands and slip lines? What causes the...Ch. 6.13 - Describe the slip mechanism that enables a metal...Ch. 6.13 - (a) Why does slip in metals usually take place on...Ch. 6.13 - Prob. 16KCPCh. 6.13 - What other types of slip planes are important...Ch. 6.13 - Define the critical resolved shear stress for a...Ch. 6.13 - Describe the deformation twinning process that...Ch. 6.13 - What is the difference between the slip and...Ch. 6.13 - Prob. 21KCPCh. 6.13 - Prob. 22KCPCh. 6.13 - What experimental evidence shows that grain...Ch. 6.13 - (a) Describe the grain shape changes that occur...Ch. 6.13 - How is the ductility of a metal normally affected...Ch. 6.13 - (a) What is solid-solution strengthening? Describe...Ch. 6.13 - What are the three main metallurgical stages that...Ch. 6.13 - Describe the microstructure of a heavily...Ch. 6.13 - Describe what occurs microscopically when a...Ch. 6.13 - When a cold-worked metal is heated into the...Ch. 6.13 - Describe what occurs microscopically when a...Ch. 6.13 - When a cold-worked metal is heated into the...Ch. 6.13 - Prob. 33KCPCh. 6.13 - Prob. 34KCPCh. 6.13 - Prob. 35KCPCh. 6.13 - Prob. 36KCPCh. 6.13 - Prob. 37KCPCh. 6.13 - Why are nanocrystalline materials stronger? Answer...Ch. 6.13 - A 70% Cu30% Zn brass sheet is 0.0955 cm thick and...Ch. 6.13 - A sheet of aluminum alloy is cold-rolled 30% to a...Ch. 6.13 - Calculate the percent cold reduction when an...Ch. 6.13 - Prob. 42AAPCh. 6.13 - What is the relationship between engineering...Ch. 6.13 - A tensile specimen of cartridge brass sheet has a...Ch. 6.13 - A 0.505-in.-diameter rod of an aluminum alloy is...Ch. 6.13 - In Figure 6.23, estimate the toughness of SAE 1340...Ch. 6.13 - The following engineering stress-strain data were...Ch. 6.13 - Prob. 49AAPCh. 6.13 - A 0.505-in.-diameter aluminum alloy test bar is...Ch. 6.13 - A 20-cm-long rod with a diameter of 0.250 cm is...Ch. 6.13 - Prob. 52AAPCh. 6.13 - Prob. 53AAPCh. 6.13 - Prob. 54AAPCh. 6.13 - Prob. 55AAPCh. 6.13 - Prob. 56AAPCh. 6.13 - A specimen of commercially pure titanium has a...Ch. 6.13 - Prob. 58AAPCh. 6.13 - Prob. 59AAPCh. 6.13 - Prob. 60AAPCh. 6.13 - Prob. 61AAPCh. 6.13 - Prob. 62AAPCh. 6.13 - Prob. 63AAPCh. 6.13 - Prob. 64AAPCh. 6.13 - Prob. 65SEPCh. 6.13 - Prob. 66SEPCh. 6.13 - A 20-mm-diameter, 350-mm-long rod made of an...Ch. 6.13 - Prob. 68SEPCh. 6.13 - Prob. 69SEPCh. 6.13 - Consider casting a cube and a sphere on the same...Ch. 6.13 - When manufacturing complex shapes using cold...Ch. 6.13 - Prob. 74SEPCh. 6.13 - Draw a generic engineering stress-strain diagram...Ch. 6.13 - (a) Draw a generic engineering stress-strain...Ch. 6.13 - Prob. 77SEPCh. 6.13 - Prob. 78SEPCh. 6.13 - Prob. 79SEPCh. 6.13 - The material for a rod of cross-sectional area...Ch. 6.13 - What do E, G, v, Ur, and toughness tell you about...Ch. 6.13 - A cylindrical component is loaded in tension until...Ch. 6.13 - Referring to Figures 6.20 and 6.21 (read the...Ch. 6.13 - (a) Show, using the definition of the Poissons...Ch. 6.13 - A one-inch cube of tempered stainless steel (alloy...Ch. 6.13 - Prob. 87SEPCh. 6.13 - Prob. 88SEPCh. 6.13 - Prob. 89SEPCh. 6.13 - Prob. 90SEPCh. 6.13 - Prob. 91SEPCh. 6.13 - Prob. 92SEPCh. 6.13 - Prob. 93SEPCh. 6.13 - Prob. 94SEPCh. 6.13 - Starting with a 2-in.-diameter rod of brass, we...Ch. 6.13 - Prob. 96SEPCh. 6.13 - Prob. 97SEPCh. 6.13 - Prob. 98SEPCh. 6.13 - The cupro-nickel substitutional solid solution...Ch. 6.13 - Prob. 100SEP
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- A cylindrical rod having a diameter of 10.0 mm is to be deformed using a tensile load of 20,500 N. It must not experience either plastic deformation or a diameter reduction of more than 4 x 10-³mm. Referring to the materials listed below, which are/is possible candidates? Justify your choice(s). Material Magnesium alloy Brass alloy Steel alloy Modulus of Elasticity (GPa) Yield Strength (MPa) Poisson's Ration 200 0.35 0.34 0.30 45 101 207 300 400arrow_forwardQuestion 2. (a) A cylindrical rod of length 120 mm and 15.0 mm diameter, is to be deformed using a tensile load of 35 kN. It must not experience either plastic deformation or a diameter reduction of more than 1.2 x 102 mm. Of the materials given in Table 2a, which are possible candidates? Justify your answers. Material Modulus of Elasticity Yield Strength Poisson's (MPa x10³) (MPa) Ratio Aluminium alloy 70 250 0.33 Titanium alloy 105 850 0.36 Steel alloy 205 550 0.27 Magnesium alloy 45 170 0.29 [50%]arrow_forwardAn application requires the support of an axial load of 100 kips with a round rod without exceeding the yield strength of the material. Assume the current cost per pound for round stock is given in the table below for several materials that are being considered. Material properties are available in Tables A-5, A-20, A-21, and A-24. Select one of the materials for each of the following additional design goals. (a) Minimize diameter. (b) Minimize weight. (c) Minimize cost. (d) Minimize axial deflection. Material 1020 HR 1020 CD 1040 Q&T @800°F 4140 Q&T @800°F Wrought Al 2024 T3 Titanium alloy (Ti-6Al-4V) Cost/lbf $0.27 $0.30 $0.35 $0.80 $1.10 $7.00 Page 90arrow_forward
- A cylindrical rod 500 mm long, having a diameter of 12.7 mm, is to be subjected to a tensile load. If the rod is to experience neither plastic deformation nor an elongation of more than 1.3 mm when the applied load is 29,000 N, which of the four metals or alloys listed below are possible candidates? Justify your choice(s).Material Modulus of Elasticity (GPa ) Yield Strength (MPa) Tensile Strength (MPa)Aluminum alloy 70 225 420Brass alloy 100 325 420Copper 110 210 275Steel alloy 207 450 550arrow_forward1)On a stress strain curve for structural steel, show various points like proportional limit, elastic limit, ultimate strength and rupture point. Give a brief description of these points. 2)How to determine the yield point for materials that do not exhibit a well defined yield point? Name some of such materials. 3)What is allowable load/stress. Give two different equations that determine the allowable load/stressarrow_forwardA cylindrical rod 500 mm long, having a diameter of 12.7 mm, is subjected to a tensile load of 30,000 N. The rod is to experience an elongation not more than 1.3 mm and FOS ≥ 1.5 setting yield strength as a criteria. Additional constraints to be met are max specific stiffness and %EL not more than 0.15. Which of the below listed materials are possible candidates? Justify your choice(s) by making a table of constraints.arrow_forward
- A cylindrical rod 500 mm long, having a diameter of 12.7 mm, is subjected to a tensile load of 30,000 N. The rod is to experience an elongation not more than 1.3 mm and FOS ≥ 1.5 setting yield strength as a criteria. Additional constraints to be met are max specific stiffness and %EL not more than 0.15. Which of the below listed materials are possible candidates? Justify your choice(s) by making a table of constraints. Materials Modulus of Elasticity, (GPa) Yield Strength, (MPa) Tensile Strength, (MPa) Aluminum alloy 70 300 450 Titanium alloy 107 400 550 Steel alloy 207 500 750arrow_forwardImagine you are a Mechanical Materials Engineer working at Mazoon Electricals Company. You are assigned to select suitable material for the body of a three-pin electrical plug. Select a suitable material based on the design specification and selection criteria.arrow_forwardgive an example proving that most materials exhibit both ductile andbrittle behavior?arrow_forward
- A cylindrical rod 100 mm long and having a diameter of 10.0 mm is to be deformed using a tensile load of 27,500 N. It must not experience either plastic deformation or a diameter reduction of more than 7.5 x 10-³ mm. Of the materials listed as follows, which are possible candidates? Justify your choice(s). Material Aluminum alloy Brass alloy Steel alloy Titanium alloy Modulus of Elasticity (GPa) Yield Strength (MPa) Poisson's Ratio 70 101 207 107 200 300 400 650 0.33 0.34 0.30 0.34arrow_forwardDefine strength and toughness. What is the typical trend between these two material properties when the microstructure of a given material is modified?arrow_forwardSeveral applications are listed below. Determine the relative importance of resilience and toughness of the materials chosen for each application. Sort the items based on whethere resilience is most important, toughness is most important, or both are equally importantarrow_forward
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Material Properties 101; Author: Real Engineering;https://www.youtube.com/watch?v=BHZALtqAjeM;License: Standard YouTube License, CC-BY