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DeGarmo's Materials and Processes in Manufacturing
12th Edition
ISBN: 9781118987674
Author: J. T. Black, Ronald A. Kohser
Publisher: WILEY
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Question
Chapter 8, Problem 98RQ
To determine
The significance property variation between directions along the fiber and across the fiber.
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Consider a piece of steel undergoing a decarburization process at 925 degrees C. the mass diffusivity of carbon in steel at 925 degrees C is 1*10^-7 cm^2/s. Determine the depth below the surface of the steel at which the concentration of carbon is reduced to 40 percent from its initial value as a result of the decarburization process for (a) an hour and (b) 10 hours. Assume the concnetration of carbon at the surface is zero throughout the decarburization process.
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Chapter 8 Solutions
DeGarmo's Materials and Processes in Manufacturing
Ch. 8 - Discuss the terms plastics and polymers. In...Ch. 8 - What are some naturally occurring nonmetallic...Ch. 8 - What are some material families that would be...Ch. 8 - How might plastics be defined from the viewpoints...Ch. 8 - What is the primary type of atomic bonding within...Ch. 8 - What is the difference between a saturated and an...Ch. 8 - What is an isomer?Ch. 8 - Describe and differentiate the two means of...Ch. 8 - What is a mer?Ch. 8 - What is degree of polymerization?
Ch. 8 - How does increasing the chain length tend to...Ch. 8 - In what way are copolymers similar to alloys in...Ch. 8 - Describe and differentiate thermoplastic and...Ch. 8 - Describe the mechanism by which thermoplastic...Ch. 8 - What does it mean when a polymer crystallizes? How...Ch. 8 - What are some of the ways that a thermoplastic...Ch. 8 - What are the four most common thermoplastic...Ch. 8 - Why are thermosetting polymers characteristically...Ch. 8 - How do thermosetting polymers respond to...Ch. 8 - Describe how thermoplastic or thermosetting...Ch. 8 - What are some attractive engineering properties of...Ch. 8 - What are some limiting properties of plastics, and...Ch. 8 - What are some environmental conditions that might...Ch. 8 - What is the most common polymer (accounting for...Ch. 8 - What are some reasons that additive agents are...Ch. 8 - What are some functions of a filler material in a...Ch. 8 - What are some of the more common filler materials...Ch. 8 - What is the function of a plasticizer?Ch. 8 - What is the difference between a dye and a...Ch. 8 - What is the role of a stabilizer or antioxidant?Ch. 8 - How might electrical conductivity be imparted to a...Ch. 8 - What is an oriented plastic, and what is the...Ch. 8 - What are some properties and characteristics of...Ch. 8 - Describe the use of plastic materials as...Ch. 8 - What are some potential benefits of using plastics...Ch. 8 - Describe some of the applications for foamed...Ch. 8 - Provide some examples where plastics have competed...Ch. 8 - What are some features of plastics that make them...Ch. 8 - In a cost comparison, why might cost per unit...Ch. 8 - How has the use of plastics grown in the...Ch. 8 - What kinds of plastics are most easily recycled?Ch. 8 - Why is the recycling of mixed plastics more...Ch. 8 - What are some recycling alternatives for...Ch. 8 - What are some of the natural materials used to...Ch. 8 - What are some of the approaches to producing a...Ch. 8 - What is the unique mechanical property of...Ch. 8 - How can cross�linking be used to control the...Ch. 8 - What is the cause of stress relaxation in...Ch. 8 - What are some of the materials that can be added...Ch. 8 - What are some of the limitations of natural...Ch. 8 - What are some of the common artificial elastomers?Ch. 8 - Prob. 52RQCh. 8 - Prob. 53RQCh. 8 - Prob. 54RQCh. 8 - Prob. 55RQCh. 8 - Prob. 56RQCh. 8 - Prob. 57RQCh. 8 - Prob. 58RQCh. 8 - Prob. 59RQCh. 8 - What kinds of ceramic products are classified as...Ch. 8 - Prob. 61RQCh. 8 - Prob. 62RQCh. 8 - Prob. 63RQCh. 8 - What is the unique feature of piezoelectric...Ch. 8 - Prob. 65RQCh. 8 - Prob. 66RQCh. 8 - Prob. 67RQCh. 8 - What are cermets, and what properties or...Ch. 8 - What are some of the attractive features of a...Ch. 8 - Prob. 70RQCh. 8 - Prob. 71RQCh. 8 - Prob. 72RQCh. 8 - Prob. 73RQCh. 8 - Prob. 74RQCh. 8 - Prob. 75RQCh. 8 - Prob. 76RQCh. 8 - Prob. 77RQCh. 8 - What is a composite material?Ch. 8 - What are the basic features of a composite...Ch. 8 - Prob. 80RQCh. 8 - Prob. 81RQCh. 8 - Prob. 82RQCh. 8 - What are some reasons for creating clad...Ch. 8 - Prob. 84RQCh. 8 - Prob. 85RQCh. 8 - Prob. 86RQCh. 8 - Prob. 87RQCh. 8 - Prob. 88RQCh. 8 - Prob. 89RQCh. 8 - Prob. 90RQCh. 8 - Prob. 91RQCh. 8 - What is the most common matrix material used in...Ch. 8 - Prob. 93RQCh. 8 - What are the attractive features of a...Ch. 8 - Prob. 95RQCh. 8 - Prob. 96RQCh. 8 - Prob. 97RQCh. 8 - Prob. 98RQCh. 8 - Prob. 99RQCh. 8 - Prob. 100RQCh. 8 - Prob. 101RQCh. 8 - Prob. 102RQCh. 8 - What are some of the limitations that might...Ch. 8 - Prob. 104RQCh. 8 - Prob. 105RQCh. 8 - Prob. 1PCh. 8 - Many of the materials presented in this chapter...Ch. 8 - Prob. 4PCh. 8 - Prob. 5PCh. 8 - Prob. 6PCh. 8 - Prob. 7PCh. 8 - Locate a current or recent article describing an...Ch. 8 - Use the Internet and other sources to research...Ch. 8 - Prob. 2CSCh. 8 - The US Army helmet has evolved from sheet steel,...Ch. 8 - Prob. 4CS
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- Multiple Choice Circle the best answer to each statement. 1. Which geometry attribute deviation(s) can be limited with a profile of a surface tolerance? A. Location B. Orientation C. Form D. All of the above 2. A true profile may be defined with: A. Basic radii B. Basic angles C. Formulas D. All of the above 3. Which modifier may be applied to the profile tolerance value? A B C. D. All of the above 4. The default tolerance zone for a profile tolerance is: A. Non-uniform B. Unilateral C. Bilateral equal distribution D. Bilateral-unequal distribution 5. An advantage of using a profile tolerance in place of a coordinate tolerance is: A. A bonus tolerance is permitted. B. A datum feature sequence may be specified C. A profile tolerance always controls size D. All of the above 6. The shape of the tolerance zone for a profile tolerance is: A. Two parallel planes B. The same as the true profile of the toleranced surface C. Equal bilateral D. Cylindrical when the diameter symbol is speci- fied…arrow_forwardOne thousand kg/h of a (50-50 wt%) acetone-in-water solution is to be extracted at 25C in a continuous, countercurrent system with pure 1,1,2-trichloroethane to obtain a raffinate containing 10 wt% acetone. Using the following equilibrium data, determine with an equilateral-triangle diagram: a- the minimum flow rate of solvent; b- the number of stages required for a solvent rate equal to 1.5 times minimum, and composition of each streamleaving each stage. c- Repeat the calculation of (a) and (b) if the solvent used has purity 93wt% (4wr% acetone, 3wt% water impurities) acetone water 1,1,2-trichloroethane Raffinate. Weight Extract. Weight 0.6 0.13 0.27 Fraction Acetone Fraction Acetone 0.5 0.04 0.46 0.44 0.56 0.4 0.03 0.57 0.29 0.40 0.3 0.02 0.68 0.12 0.18 0.2 0.015 0.785 0.0 0.0 0.1 0.01 0.89 0.55 0.35 0.1 0.5 0.43 0.07 0.4 0.57 0.03 0.3 0.68 0.02 0.2 0.79 0.01 0.1 0.895 0.005arrow_forward2500 kg/hr of (20-80) nicotine water solution is to be extracted with benzene containing 0.5% nicotine in the 1st and 2ed stages while the 3rd stage is free of nicotine. Cross- current operation is used with different amounts of solvent for each stages 2000kg/hr in the 1st stage, 2300 kg/hr in the 2nd stage, 2600 kg/hr in the 3rd, determine: - a- The final raffinate concentration and % extraction. b- b- The minimum amount of solvent required for counter-current operation if the minimum concentration will be reduced to 5% in the outlet raffinate. Equilibrium data Wt % Nicotine in water Wt % Nicotine in benzene 0 4 16 25 0 4 21 30arrow_forward
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