DeGarmo's Materials and Processes in Manufacturing
12th Edition
ISBN: 9781118987674
Author: J. T. Black, Ronald A. Kohser
Publisher: WILEY
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Textbook Question
Chapter 6, Problem 56RQ
How can an austenitic stainless steel be easily identified?
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Example-1:
l
D
A uniform rotor of length 0.6 m and diameter 0.4 m is made of steel (density 7810 kg/m³)
is supported by identical short bearings of stiffness 1 MN/m in the horizontal and vertical
directions. If the distance between the bearings is 0.7 m, determine the natural frequencies
and plot whirl speed map.
Solution:
B
find the laplace transform for the
flowing function
2(1-e)
Ans. F(s)=-
S
12)
k
0
Ans. F(s)=
k
s(1+e)
0 a
2a 3a 4a
13)
2+
Ans. F(s)=
1
s(1+e")
3
14) f(t)=1, 0
Find the solution of the following Differential Equations
Using Laplace Transforms
1) 4y+2y=0.
y(0)=2.
y'(0)=0.
2) y+w²y=0,
(0)=A,
y'(0)=B.
3) +2y-8y 0.
y(0)=1.
y'(0)-8.
4)-2-3y=0,
y(0)=1.
y'(0)=7.
5) y-ky'=0,
y(0)=2,
y'(0)=k.
6) y+ky'-2k²y=0,
y(0)=2,
y'(0) = 2k.
7) '+4y=0,
y(0)=2.8
8) y+y=17 sin(21),
y(0)=-1.
9) y-y-6y=0,
y(0)=6,
y'(0)=13.
10) y=0.
y(0)=4,
y' (0)=0.
11) -4y+4y-0,
y(0)=2.1.
y'(0)=3.9
12) y+2y'+2y=0,
y(0)=1,
y'(0)=-3.
13) +7y+12y=21e".
y(0)=3.5.
y'(0)=-10.
14) "+9y=10e".
y(0)=0,
y'(0)=0.
15) +3y+2.25y=91' +64.
y(0)=1.
y'(0) = 31.5
16)
-6y+5y-29 cos(2t).
y(0)=3.2,
y'(0)=6.2
17) y+2y+2y=0,
y(0)=0.
y'(0)=1.
18) y+2y+17y=0,
y(0)=0.
y'(0)=12.
19) y"-4y+5y=0,
y(0)=1,
y'(0)=2.
20) 9y-6y+y=0,
(0)-3,
y'(0)=1.
21) -2y+10y=0,
y(0)=3,
y'(0)=3.
22) 4y-4y+37y=0,
y(0)=3.
y'(0)=1.5
23) 4y-8y+5y=0,
y(0)=0,
y'(0)=1.
24)
++1.25y-0,
y(0)=1,
y'(0)=-0.5
25) y 2 cos(r).
y(0)=2.
y'(0) = 0.
26)
-4y+3y-0,
y(0)=3,
y(0) 7.
27) y+2y+y=e
y(0)=0.
y'(0)=0.
28) y+2y-3y=10sinh(27),
y(0)=0.
y'(0)=4.
29)…
Chapter 6 Solutions
DeGarmo's Materials and Processes in Manufacturing
Ch. 6 - Why might it be important to know the prior...Ch. 6 - What is a ferrous material?Ch. 6 - How does the amount of steel that is recycled...Ch. 6 - Why is the recycling of steel so attractive...Ch. 6 - When iron ore is reduced to metallic iron, what...Ch. 6 - What properties or characteristics have made steel...Ch. 6 - What is involved in the conversion of pig iron...Ch. 6 - What are some of the modification processes that...Ch. 6 - What is the advantage of pouring molten metal from...Ch. 6 - What are some of the attractive economic and...
Ch. 6 - Prob. 11RQCh. 6 - What are some of the techniques used to reduce the...Ch. 6 - How might other gases, such as nitrogen and...Ch. 6 - What are some of the attractive features of...Ch. 6 - What is plain�carbon steel?Ch. 6 - What is considered a low�carbon steel?...Ch. 6 - What properties account for the high�volume use...Ch. 6 - Why should plain�carbon steels be given first...Ch. 6 - What are some of the common alloy elements added...Ch. 6 - For what different reasons might alloying elements...Ch. 6 - What are some of the alloy elements that tend to...Ch. 6 - While strength and hardness are dependent on the...Ch. 6 - What alloys are particularly effective in...Ch. 6 - What is the basis of the AISI–SAE classification...Ch. 6 - What is the significance of the last two digits in...Ch. 6 - How are letters incorporated into the AISI–SAE...Ch. 6 - What is an H�grade steel, and when should it be...Ch. 6 - Why should the proposed fabrication processes...Ch. 6 - How are the final properties usually obtained in...Ch. 6 - Prob. 30RQCh. 6 - Prob. 31RQCh. 6 - Prob. 32RQCh. 6 - What is the primary attraction of the...Ch. 6 - Prob. 34RQCh. 6 - What are the two phases that are present in...Ch. 6 - What is the transformation that occurs during the...Ch. 6 - Prob. 37RQCh. 6 - Prob. 38RQCh. 6 - Prob. 39RQCh. 6 - Describe the role of steel in the automotive...Ch. 6 - Prob. 41RQCh. 6 - Prob. 42RQCh. 6 - What are some of the compromises associated with...Ch. 6 - What factors might be used to justify the added...Ch. 6 - What are some of the coating materials that have...Ch. 6 - What are soft magnetic materials?Ch. 6 - Prob. 47RQCh. 6 - What are maraging steels, and for what conditions...Ch. 6 - Prob. 49RQCh. 6 - Prob. 50RQCh. 6 - Prob. 51RQCh. 6 - Why should ferritic stainless steels be given...Ch. 6 - Which of the major types of stainless steel is...Ch. 6 - Under what conditions might a martensitic...Ch. 6 - Prob. 55RQCh. 6 - How can an austenitic stainless steel be easily...Ch. 6 - Prob. 57RQCh. 6 - Prob. 58RQCh. 6 - Prob. 59RQCh. 6 - Prob. 60RQCh. 6 - What is a tool steel?Ch. 6 - How does the AISI–SAE designation system for...Ch. 6 - What is the least expensive variety of tool steel?Ch. 6 - Prob. 64RQCh. 6 - What alloying elements are used to produce the...Ch. 6 - What assets can be provided by the...Ch. 6 - Prob. 67RQCh. 6 - Prob. 68RQCh. 6 - Describe the microstructure of gray cast iron.Ch. 6 - Which of the structural units is generally altered...Ch. 6 - What are some of the attractive engineering...Ch. 6 - What are some of the key limitations to the...Ch. 6 - Prob. 73RQCh. 6 - How is malleable cast iron produced?Ch. 6 - What structural feature is responsible for the...Ch. 6 - Prob. 76RQCh. 6 - What is the purpose of inoculation when making...Ch. 6 - What is fading? Why should ductile iron be...Ch. 6 - What requirements of ductile iron manufacture are...Ch. 6 - What are some of the attractive features of...Ch. 6 - Compacted graphite iron has a structure and...Ch. 6 - What are some of the reasons that alloy additions...Ch. 6 - What properties are enhanced in the high�alloy...Ch. 6 - When should cast steel be used instead of a cast...Ch. 6 - In what ways might a cast steel be more difficult...Ch. 6 - Why are standard geometry test bars often cast...Ch. 6 - Prob. 1PCh. 6 - Select from among the common hand tools in the...Ch. 6 - Prob. 3PCh. 6 - Identify a particular product that has been...Ch. 6 - Prob. 5PCh. 6 - Select among the components in the following list,...Ch. 6 - Prob. 7PCh. 6 - Prob. 8PCh. 6 - Prob. 1CSCh. 6 - Prob. 2CSCh. 6 - Surface Treatment—Depending on the material...
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