Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133559897
Author: KALPAKJIAN
Publisher: PEARSON
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Chapter 34, Problem 33SDP
It has been observed in practice that a thin layer of chrome plating, such as that on older model automobile bumpers, is better than a thick layer. Explain why, considering the effect of thickness on the tendency for cracking.
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Chapter 34 Solutions
Manufacturing Engineering & Technology
Ch. 34 - Explain why surface treatments may be necessary...Ch. 34 - What is shot peening? Why is it performed?Ch. 34 - What are the advantages of roller burnishing?Ch. 34 - Explain the difference between case hardening and...Ch. 34 - Describe the principles of physical and chemical...Ch. 34 - Review Fig. 34.2 and describe the principles...Ch. 34 - Prob. 7RQCh. 34 - Prob. 8RQCh. 34 - Prob. 9RQCh. 34 - Prob. 10RQ
Ch. 34 - Prob. 11RQCh. 34 - Prob. 12RQCh. 34 - Prob. 13RQCh. 34 - Prob. 14RQCh. 34 - Prob. 15RQCh. 34 - Prob. 16RQCh. 34 - Describe how roller-burnishing processes induce...Ch. 34 - Explain why some parts may be coated with...Ch. 34 - Prob. 19QLPCh. 34 - Prob. 20QLPCh. 34 - Prob. 21QLPCh. 34 - It is well known that coatings may be removed or...Ch. 34 - Make a list of the coating processes described in...Ch. 34 - Sort the coating processes described in this...Ch. 34 - Why is galvanizing important for automotive-body...Ch. 34 - Explain the principles involved in various...Ch. 34 - Taking a simple example, such as the parts shown...Ch. 34 - Estimate the plating thickness in electroplating a...Ch. 34 - Which surface treatments are functional, and which...Ch. 34 - An artificial implant has a porous surface area...Ch. 34 - If one is interested in obtaining a textured...Ch. 34 - It is known that a mirrorlike surface finish can...Ch. 34 - It has been observed in practice that a thin layer...Ch. 34 - Prob. 34SDPCh. 34 - Prob. 35SDPCh. 34 - Because they evaporate, solvents and similar...Ch. 34 - Prob. 37SDPCh. 34 - The shot-peening process can be demonstrated with...Ch. 34 - Prob. 39SDPCh. 34 - Prob. 40SDP
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- What is a fatigue limit, and what relevance does it have for lifetimes in the gigacycle (109) regime? Explainarrow_forwardWhy is fatigue generally less of a problem with ceramics and glasses than with metals and polymers?arrow_forwardFor the case of a center notched panel that is loaded by concentrated forces acting at the crack surfaces, what would happen to the crack growth rate as the crack size increased?arrow_forward
- -Observe the fracture surface of each heat-treated sample, compare its characteristics and explain.arrow_forwardImagine that you have two cracked components that are identical to one another except that Component A has a preexisting crack that is twice as long as that found in Component B. Does that mean that the fatigue lifetime of Component A will be 50% that of Component B?arrow_forwardWhat is the importance of knowing the Mechanical Properties of a certain kind of Metal?enumeratearrow_forward
- Discuss the advantages and disadvantages of hot and cold working of metals.arrow_forward7. By referring to a sketch showing a stress concentration, describe the phenomenon of crack initiation in high cycle fatigue and comment on the proportion of fatigue life that is used in initiating a crack under these conditions. 8. By considering a notched metal bar as an example, explain (with the aid of diagrams), how you would reduce the probability of fatigue failure by applying self-stresses. 9. Describe, with sketched examples, how the stress-raising effect of circular and elliptical holes can be considered qualitatively as being analogous to liquid flow. 10. By considering a circular hole in a thin elastic sheet, explain (with the aid of any diagrams as appropriate) how a stress concentration can magnify stress. 11. Explain the principles of designing alloys for oxidation resistance.12. Describe and explain (with the aid of a sketch) how crack propagation is enhanced through stress corrosion cracking Answer All partsarrow_forwardGiven that the 106-cycle fatigue limit is often approximately half of the tensile strength of a metal, it would appear to be good design practice to use a material with as high a tensile strength as possible to maximize fatigue resistance. What is the potential shortcoming of this approach?arrow_forward
- Write the names of the destructive (mechanical) tests applied to metal-based materials and explain what you know about the notch-impact test with figures and graphics.arrow_forwardHow can the fatigue be prevented?arrow_forwardSummarize the differences between intrinsic toughening processes and extrinsic toughening processes with regard to (i) the basis for toughening, (ii) the zone of activity with respect to the crack tip, (iii) the effect on crack initiation and extension, and (iv) the influence on R-curve behaviorarrow_forward
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