Degarmo's Materials And Processes In Manufacturing
13th Edition
ISBN: 9781119492825
Author: Black, J. Temple, Kohser, Ronald A., Author.
Publisher: Wiley,
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Chapter 9, Problem 41RQ
Give an example where an unexpected problem might occur in a materials substitution.
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you would like to be able to be physicallyseparate different materials in a scrap recycling plant. describe some possible methods that might be used to separate materials such as polymers, alluminium alloys and steel from one another
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Which of the following conditions/factors will reduce a materials fatigue resistance:
Select one or more:
a.
Roughening or etching the surface
b.
Experiencing a permanent residual compressive stress
c.
Increasing the stress amplitude
d.
Experiencing a mean tensile stress
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Chapter 9 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 9 - What is the objective of a manufacturing...Ch. 9 - What are some undesirable features of...Ch. 9 - What problems are created by the availability of...Ch. 9 - In a manufacturing environment, why should the...Ch. 9 - How has the material balance shifted in the...Ch. 9 - How have different materials enabled advances and...Ch. 9 - Discuss the interrelation between engineering...Ch. 9 - What is design?Ch. 9 - What are the three primary stages of product...Ch. 9 - What are some of the features to be considered in...
Ch. 9 - What is the benefit of requiring prototype...Ch. 9 - What sequence of activities is common to nearly...Ch. 9 - Prob. 13RQCh. 9 - What is the most frequent pitfall when seeking to...Ch. 9 - What should be the first step in any materials...Ch. 9 - In what ways does the concept of shape or geometry...Ch. 9 - Prob. 17RQCh. 9 - Describe some of the possible mechanical...Ch. 9 - How might temperature enter into the specification...Ch. 9 - What are some physical properties of materials?Ch. 9 - What are some of the important aspects of the...Ch. 9 - What are some of the possible manufacturing...Ch. 9 - Why is it important to resist jumping to the...Ch. 9 - Prob. 24RQCh. 9 - What is the difference between an absolute and...Ch. 9 - Prob. 26RQCh. 9 - Prob. 27RQCh. 9 - Prob. 28RQCh. 9 - Give an example of a product or component where...Ch. 9 - What are some possible considerations relating to...Ch. 9 - Prob. 31RQCh. 9 - Prob. 32RQCh. 9 - Prob. 33RQCh. 9 - Prob. 34RQCh. 9 - Prob. 35RQCh. 9 - Why might material selection and process selection...Ch. 9 - Give an example of where selection of a material...Ch. 9 - Why is it likely that compromise, opinion, and...Ch. 9 - Why is it likely that multiple individuals will be...Ch. 9 - Why should the design and manufacture of a...Ch. 9 - Give an example where an unexpected problem might...Ch. 9 - Prob. 42RQCh. 9 - What are some of the different types of useful...Ch. 9 - How have high�speed, high�capacity computers...Ch. 9 - Prob. 1PCh. 9 - The chalk tray on a classroom chalkboard has very...Ch. 9 - Prob. 3PCh. 9 - Examine the properties of wood, aluminum, and...Ch. 9 - Automobile body panels have been made from carbon...Ch. 9 - Prob. 6PCh. 9 - Go to the local hardware or building supply store...Ch. 9 - Prob. 8PCh. 9 - Decorative fence posts for a residential home have...Ch. 9 - The individual turbine blades used in the exhaust...Ch. 9 - Prob. 11PCh. 9 - Hockey sticks are currently available in wood,...Ch. 9 - The 2019 Corvette C8 has moved to a mid�engine,...Ch. 9 - What is the normal use or uses of this product or...Ch. 9 - Prob. 2CSCh. 9 - Prob. 3CSCh. 9 - Prob. 4CSCh. 9 - Prob. 5CSCh. 9 - Prob. 6CSCh. 9 - Would there be any concerns relating to...
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- provide complete answerarrow_forwardShow the typical Stress versus Strain curve for the following materials, and define the materials properties "The stress-strain curve can be used to read off the structural load ability of materials. For many materials, including metals, their loading bearing capability is one of the most important material properties". by reference to the diagram: a) Hammer head is made from hardened tool steel b) Smelter is made from refractory ceramic c) Cable is made from pure copper d) Box is made from polypropylenearrow_forwardWhich of the following conditions/factors will reduce a materials fatigue resistance: Select one or more: a.Experiencing a permanent residual compressive stress b.Increasing the stress amplitude c.Experiencing a mean tensile stress d.Roughening or etching the surface e.Mechanically hardening the surfacearrow_forward
- Find five examples of mature designs. Also, find one mature design that has been recently redesigned. What pressures or new developments led to the change?arrow_forwardWhat do you mean by fixed cost and variable cost? Provide at least three examples of each item. (Write within 4-5 lines).arrow_forwardanswer quicklyarrow_forward
- Different types of material categories, Example of an engineering product from each cateory, Applications for each product identified. Specific characteristics related to the behaviour of the four categorles of engineering materialsarrow_forwardIdentify the second step in the materials selection procedure. Use the data sources to determine the possible materials Criteria for selection Selection of most suitable material Identification of design specification for the productarrow_forwardThe properties of materials can be classified into the following categories: Mechanical Physical Thermal Electrical Magnetic Describe each category, include two specific properties in the description and say why those properties are of interest to a design engineer.arrow_forward
- a) Answer the following true/ false questions. Each question is ) When one dimension of structure is much longer than the others, the strain in that direction can be negligible. ) Buckling is the critical failure mode when Euler beams are subjected to very larger compressive stress than the yield strength. ) Fatigue failure of the structure occurs due to the sudden impact load. ) The reliability of products always decreases with respect to time or cycles with constant failure rate. () For thin-walled pressure vessels, the stresses in the thickness direction can be negligible. ) The stress concentration occurs due to the geometric discontinuity but does not depend on the type of loads. ) Based on the fracture mechanics theory, the structural failure always occurs due to the presence of cracks or defects. () In general, failure of ductile materials occurs in the principle plane due to the principle stresses. () Ultimate strengths of brittle materials are always smaller than those of…arrow_forwardUsing the figure from Question 2, imagine the lamp gets heavier and heavier until one of the cables breaks. If all of the cables have the same tensile strength, a) which one will break first, and b) why will that one specifically break first? You do not need to provide Given, Assume, and Problem Type/Features for this question. You just need to provide Find, Analyses and a Conclusion. Provide an explanation for b) that isclear, concise, correct and well organized. Use at least one diagram (2D or 3D) to make your case as to why one of them will break before the others. You can use equations/math to support your explanation as well, if you want, but expressing your answer in words and using logic will be all that is necessary. Youranswer to a) i.e. which one will break first, can be your “Conclusion” to Question 3arrow_forwardCritical Thinking: Name and explain the instances that the following materials should be used and not any other materials because of its certain features not available to the others: 1.1 ferrous 1.2 non-ferrousarrow_forward
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