EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 9780100793439
Author: KALPAKJIAN
Publisher: YUZU
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Chapter 8, Problem 29QLP
To determine
What is the difference between the structure of graphiteand that of diamond? Is it important? Explain.
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4. Calculate the theoretical yield strength of aluminum. The Young's modulus of aluminum is
70 GPa, and Poisson's ratio is 0.3. You may assume a simple cubic lattice for aluminum
crystals. Compare your result with the measured yield strength of pure aluminum (~40 MPa),
and explain the main cause of the difference.
Explain why martensite is hard? What is the crystal structure of martensite? Show the positions of carbon atoms in unit cell of martensite.
Describe how you would determine the indices of given crystallographic directions.
Chapter 8 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
Ch. 8 - What is a ceramic?Ch. 8 - List the major differences between the properties...Ch. 8 - List the major types of ceramics that are useful...Ch. 8 - What do the following materials typically consist...Ch. 8 - Prob. 5RQCh. 8 - Prob. 6RQCh. 8 - Prob. 7RQCh. 8 - Prob. 8RQCh. 8 - Prob. 9RQCh. 8 - Prob. 10RQ
Ch. 8 - Prob. 11RQCh. 8 - Prob. 12RQCh. 8 - Prob. 13RQCh. 8 - Prob. 14RQCh. 8 - Prob. 15RQCh. 8 - Prob. 16RQCh. 8 - Prob. 17RQCh. 8 - Prob. 18RQCh. 8 - Explain why ceramics are weaker in tension than in...Ch. 8 - What are the advantages of cermets? Suggest...Ch. 8 - Explain why the electrical and thermal...Ch. 8 - Prob. 22QLPCh. 8 - Prob. 23QLPCh. 8 - Explain why the mechanical properties of ceramics...Ch. 8 - Explain how ceramics can be made tougher.Ch. 8 - List and describe situations in which static...Ch. 8 - What properties are important in making...Ch. 8 - A large variety of glasses is now available. Why...Ch. 8 - Prob. 29QLPCh. 8 - Prob. 30QLPCh. 8 - Aluminum oxide and PSZ are described as white in...Ch. 8 - Why does the strength of a ceramic part depend on...Ch. 8 - In old castles and churches in Europe, the glass...Ch. 8 - Prob. 34QLPCh. 8 - Prob. 35QLPCh. 8 - Perform an Internet search and determine the...Ch. 8 - Prob. 37QLPCh. 8 - Prob. 38QLPCh. 8 - In a fully dense ceramic, UTSO = 200 MPa and EO =...Ch. 8 - Plot the UTS, E, and k values for ceramics as a...Ch. 8 - What would be the tensile strength and the modulus...Ch. 8 - Prob. 42QTPCh. 8 - Prob. 43QTPCh. 8 - Prob. 44QTPCh. 8 - Prob. 45SDPCh. 8 - Prob. 46SDPCh. 8 - Prob. 47SDPCh. 8 - Prob. 48SDPCh. 8 - Prob. 49SDPCh. 8 - Prob. 50SDPCh. 8 - Conduct a literature search and write a brief...Ch. 8 - Prob. 52SDPCh. 8 - Prob. 53SDPCh. 8 - It has been noted that the strength of brittle...Ch. 8 - Prob. 55SDP
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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
- Is there any relationship between a crystal and a grain? justify your answer.arrow_forwardA form of boron nitride (BN) known as hexagonal boron nitride is used as a solid lubricant. Explain how this may be possible by comparing this situation with that encountered in two forms of carbon, namely diamond and graphite.arrow_forward(a) At the atomic level, how deformation process occurs/proceeds? (b) If we have the same materials in two different forms as a single crystal and as a polycrystalline sample, which one would have higher internal energy? Why? (c) Determine miller indices for the plane shown in red. Show your work to clarify how you came up with your answer.arrow_forward
- Only 4arrow_forwardThe mechanical properties of cobalt may be improved by incorporating fine particles of tungsten carbide (WC). Given that the modulus of elasticity of these materials is 200 GPa and 700 GP, respectively. Plot modulus of elasticity versus the volume percent of WC in Co from 0 to 100 vol%, using both upper- and lower-bound expressions. And explain what you have plotted.arrow_forwardDiscuss under what circumstances martensite is formed and highlight its effect on mechanical properties.arrow_forward
- The yield point for a brass alloy that has an average grain diameter of 50 micrometers is 120 MPa.arrow_forwardExplain how a form of boron nitride known as hexagonal boron nitride is used as a solid lubricant. Compare this form to two forms of carbon: diamond and graphite.arrow_forward(c) Explain the reason of FCC metals are often recommended for use at low temperatures, particularly when any sudden loading of the part is expected.arrow_forward
- (a). Graphite and diamond are both made from carbon atoms. Kedua-dua grafit dan intan adalah diperbuat dari atom-atom karbon. (). List TWO physical characteristic of each material. Senaraikan DUA sifat-sifat fizikal bagi kedua-dua bahan tersebut (ii) Give ONE application for graphite and ONE for diamond Berikan SATU penggunaan bagi grafit dan SATU penggunaan bagi intan (ii). If both materials are made of carbon, why does such a difference in properties exist? Jika kedua-dua bahan tersebut diperbuat daripada karbon. jelaskan kenapa perbezaan ke atas sifat-sifat ini wujud?arrow_forwardQuestion Seven (a) For refractory ceramic materials, cite two characteristics that improve with and two characteristics that are adversely affected by increasing porosity. (b) Show that the minimum cation-to-anion radius ratio for a coordination number of 4 is 0.225. (Hint: Use the AX crystal structure, assuming the anion spheres touch in plane). (c) The unit cell for Al>Os has hexagonal symmetry with lattice parameters a = 0.4759 nm and c 1.2 nm. If the density of this material is equal to 3.99 g/cm' and is calculated according to the formula n'(E Ac+ EAA) V.NA Calculate the atomic packing factor for Al>O, given that the ionic radius for AI is 0.053 nm and i 0' is 0.140 nm. Take N, = 6.023 x 1023 atoms/mole. (d) Mention any three industrial ceramics and indicate their 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
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