Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 1, Problem 32QLP
To determine
Explain the difference that it was mentioned that twinning usually occurs in HCP materials, but Fig. 1.6b shows twinning in a rectangular array of atoms.
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Briefly explain why the properties of polycrystalline materials are most often isotropic.
Based on bond energy and bond type, briefly explain why metals are typically more ductile than ceramics.
An 80μm diameter glass fiber is confirmed to have no surface cracks longer than 5μm. If the theoretical strength of the fiber is 5GPa, what can you predict the expected minimum breaking strength of the fiber to be? Your answer should be in units of MPa.
Hint: The crack tip size will be no smaller than the ionic diameter (twice the radius) of O^2− and the crack length will be no longer than 5μm.
Chapter 1 Solutions
Manufacturing Engineering & Technology
Ch. 1 - What is the difference between an atom and a...Ch. 1 - Prob. 2RQCh. 1 - Prob. 3RQCh. 1 - Prob. 4RQCh. 1 - Define anisotropy. What is its significance?Ch. 1 - What effects does recrystallization have on the...Ch. 1 - What is strain hardening, and what effects does it...Ch. 1 - Explain what is meant by structure-sensitive and...Ch. 1 - Prob. 9RQCh. 1 - What influence does grain size have on the...
Ch. 1 - What is the relationship between the nucleation...Ch. 1 - What is a slip system, and what is its...Ch. 1 - Explain the difference between recovery and...Ch. 1 - What is hot shortness, and what is its...Ch. 1 - Explain the advantages and limitations of cold,...Ch. 1 - Describe what the orange peel effect is. Explain...Ch. 1 - Some metals, such as lead, do not become stronger...Ch. 1 - Describe the difference between preferred...Ch. 1 - Differentiate between stress relaxation and stress...Ch. 1 - What is twinning? How does it differ from slip?Ch. 1 - Prob. 21QLPCh. 1 - What is the significance of the fact that some...Ch. 1 - Is it possible for two pieces of the same metal to...Ch. 1 - Prob. 24QLPCh. 1 - A cold-worked piece of metal has been...Ch. 1 - What materials and structures can you think of...Ch. 1 - Two parts have been made of the same material, but...Ch. 1 - Do you think it might be important to know whether...Ch. 1 - Explain why the strength of a polycrystalline...Ch. 1 - Describe the technique you would use to reduce the...Ch. 1 - What is the significance of the fact that such...Ch. 1 - Prob. 32QLPCh. 1 - It has been noted that the more a metal has been...Ch. 1 - Is it possible to cold work a metal at...Ch. 1 - Comment on your observations regarding Fig. 1.14.Ch. 1 - Is it possible for a metal to be completely...Ch. 1 - Prob. 37QTPCh. 1 - Prob. 38QTPCh. 1 - Plot the data given in Table 1.1 in terms of...Ch. 1 - A strip of metal is reduced from 30 mm in...Ch. 1 - Prob. 41QTPCh. 1 - How many grains are there on the surface of the...Ch. 1 - Prob. 43QTPCh. 1 - Prob. 44QTPCh. 1 - Prob. 45QTPCh. 1 - A technician determines that the grain size of a...Ch. 1 - If the diameter of the aluminum atom is 0.28 nm,...Ch. 1 - The following data are obtained in tension tests...Ch. 1 - Prob. 50QTPCh. 1 - Prob. 51QTPCh. 1 - Prob. 52QTPCh. 1 - Same as Prob. 1.39, but ASTM no. versus...Ch. 1 - By stretching a thin strip of polished metal, as...Ch. 1 - Draw some analogies to mechanical fiberingfor...Ch. 1 - Draw some analogies to the phenomenon of hot...Ch. 1 - Take a deck of playing cards, place a rubber band...Ch. 1 - Give examples in which anisotropy is scale...Ch. 1 - The movement of an edge dislocation was described...
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- An 80μm diameter glass fiber is confirmed to have no surface cracks longer than 5μm. If the theoretical strength of the fiber is 5GPa, what can you predict the expected minimum breaking strength of the fiber to be? Your answer should be in units of MPa. Hint: The crack tip size will be no smaller than the ionic diameter (twice the radius) of O^2−(see appendix 2) and the crack length will be no longer than 5μm.arrow_forwardGive one example of a nanomaterial excluding Nano-Titanium Dioxide, Silver Nanoparticles and Graphene and identify its properties and applications.arrow_forward1. In engineering, why is the density of a particular engineering substance so crucial? Clearly explain. 2. What do the terms "single crystal" and "polycrystalline substance" mean? Briefly compare and contrast them. 3. Describe how x-ray diffraction is used to quantify elastic strain. Please answer all with full detail, Thank youarrow_forward
- If we strain an FCC and an HCP single crystal, which of the two will have a larger amount of easy glide, and why?arrow_forwardExplain , why you would/would not use XRD for the characterization of glassarrow_forwardWill the stress required to INTRODUCE plastic deformation in a single crystal will be same as the polycrystalline material? Justify your answer.arrow_forward
- What is Gorilla Glass from Corning? Why does it outperform regular window glass in terms of mechanical properties? Briefly explain utilizing basic mechanical principles. When necessary, provide diagrams to further explain your response.arrow_forwardCompare the dependencies of Elastic Modulus andTensile Strengthon chemical composition, atomic bonding and microstructure in solids.arrow_forwardWhat is section property? Give its formula?arrow_forward
- Assume the temperature of your skin is 32oC. If you touch a thick piece of aluminum at 75oC, what is the skin surface temperature? How about a block of concrete at 90oC? Look up the properties for the two materials yourself. Discuss your results by comparing the two cases.arrow_forwardGiven the disruption introduced by the pure edge-dislocation on the regular arrangement of atoms, to which other defect can it be related to? and why?arrow_forwardExplain effect of defects on the properties of materials? briefy explain with diagrammatical?arrow_forward
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