EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 8220100793431
Author: KALPAKJIAN
Publisher: PEARSON
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Chapter 32, Problem 12RQ
What are the principles of (a) wave soldering and (b) reflow soldering?
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motor supplies 200 kW at 6 Hz to flange A of the shaft shown in Figure. Gear B transfers 125 W of power to operating machinery in the factory, and the remaining power in the shaft is mansferred by gear D. Shafts (1) and (2) are solid aluminum (G = 28 GPa) shafts that have the same diameter and an allowable shear stress of t= 40 MPa. Shaft (3) is a solid steel (G = 80 GPa) shaft with an allowable shear stress of t = 55 MPa. Determine:
a) the minimum permissible diameter for aluminum shafts (1) and (2)
b) the minimum permissible diameter for steel shaft (3).
c) the rotation angle of gear D with respect to flange A if the shafts have the minimum permissible diameters as determined in (a) and (b).
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Q2/ Assume a car's exhaust system can be approximated as 14 ft long and 0.125 ft-diameter cast-iron pipe (
= 0.00085 ft) with the equivalent of (6) regular 90° flanged elbows (KL = 0.3) and a muffler. The
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Q3/Liquid ammonia at -20°C is flowing through a 30 m long section of a 5 mm diameter copper tube(e =
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.μ= 2.36 × 10-4 kg/m.s)p = 665.1 kg/m³
2/Y
Y+1
2Cp
Q1/ Show that
Cda
Az x
P1
mactual
Cdf
Af
R/T₁
2pf(P1-P2-zxgxpf)
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The air pressure decreases with altitude as per relation h = 19200 log10 (1.013), where P is in bar. State
any assumptions made.
t = ts
P
0.0065h
Chapter 32 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
Ch. 32 - What is the difference between brazing and...Ch. 32 - Are fluxes necessary in brazing? If so, why?Ch. 32 - Why is surface preparation important in...Ch. 32 - What materials are typically used in solder?Ch. 32 - Soldering is generally applied to thinner...Ch. 32 - Explain the reasons why a variety of mechanical...Ch. 32 - List three brazing and three soldering techniques.Ch. 32 - Describe the similarities and differences between...Ch. 32 - What precautions should be taken in the...Ch. 32 - What difficulties are involved in joining...
Ch. 32 - Prob. 11RQCh. 32 - What are the principles of (a) wave soldering...Ch. 32 - What is a peel test? Why is it useful?Ch. 32 - What is a combination joint?Ch. 32 - Prob. 15RQCh. 32 - Prob. 16QLPCh. 32 - Prob. 17QLPCh. 32 - Comment on your observations concerning the...Ch. 32 - Give examples of combination joints other than...Ch. 32 - Discuss the need for fixtures for holding...Ch. 32 - Explain why adhesively bonded joints tend to be...Ch. 32 - It is common practice to tin-plate electrical...Ch. 32 - Give three applications where adhesive-bonding is...Ch. 32 - Prob. 24QLPCh. 32 - If you are designing a joint that must be strong...Ch. 32 - Prob. 26QLPCh. 32 - Rate lap, butt, and scarf joints in terms of...Ch. 32 - Prob. 28QLPCh. 32 - Prob. 29QTPCh. 32 - Prob. 30QTPCh. 32 - Prob. 31QTPCh. 32 - Figure 32.4 shows qualitatively the tensile and...Ch. 32 - When manufacturing the fuselage of a commuter...Ch. 32 - Prob. 34SDPCh. 32 - Name several products that have been assembled...Ch. 32 - Suggest methods of attaching a round bar (made of...Ch. 32 - Prob. 38SDPCh. 32 - Prob. 39SDPCh. 32 - Prob. 40SDPCh. 32 - Prob. 41SDPCh. 32 - Describe part shapes that cannot be joined by...Ch. 32 - Prob. 43SDPCh. 32 - Prob. 44SDPCh. 32 - Prob. 45SDPCh. 32 - Prob. 46SDPCh. 32 - Review Fig. 32.9a and explain the shortcoming...
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