EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 9780100793439
Author: KALPAKJIAN
Publisher: YUZU
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Chapter 34, Problem 7RQ
To determine
What is electroplating? Why can it be hazardous?
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1.1 m
1.3 m
B
60-mm diameter
Brass
40-mm diameter
Aluminum
PROBLEM 2.52
-
A rod consisting of two cylindrical portions AB and BC is restrained at both
ends. Portion AB is made of brass (E₁ = 105 GPa, α = 20.9×10°/°C) and
portion BC is made of aluminum (Ę₁ =72 GPa, α = 23.9×10/°C).
Knowing that the rod is initially unstressed, determine (a) the normal
stresses induced in portions AB and BC by a temperature rise of 42°C, (b)
the corresponding deflection of point B.
30 mm
D
=
40 MPa
-30 mm
B
C
80 MPa
PROBLEM 2.69
A 30-mm square was scribed on the side of a large steel pressure
vessel. After pressurization, the biaxial stress condition at the square
is as shown. For E = 200 GPa and v=0.30, determine the change in
length of (a) side AB, (b) side BC, (c) diagnonal AC.
Please solve in detail this problem
thank you
Chapter 34 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
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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- PROBLEM 2.50 1.8 m The concrete post (E-25 GPa and a = 9.9 x 10°/°C) is reinforced with six steel bars, each of 22-mm diameter (E, = 200 GPa and a, = 11.7 x 10°/°C). Determine the normal stresses induced in the steel and in the concrete by a temperature rise of 35°C. 6c " 0.391 MPa 240 mm 240 mm 6₁ = -9.47 MPaarrow_forwardFor some viscoelastic polymers that are subjected to stress relaxation tests, the stress decays with time according to a(t) = a(0) exp(-4) (15.10) where σ(t) and o(0) represent the time-dependent and initial (i.e., time = 0) stresses, respectively, and t and T denote elapsed time and the relaxation time, respectively; T is a time-independent constant characteristic of the material. A specimen of a viscoelastic polymer whose stress relaxation obeys Equation 15.10 was suddenly pulled in tension to a measured strain of 0.5; the stress necessary to maintain this constant strain was measured as a function of time. Determine E (10) for this material if the initial stress level was 3.5 MPa (500 psi), which dropped to 0.5 MPa (70 psi) after 30 s.arrow_forwardFor the flows in Examples 11.1 and 11.2, calculate the magnitudes of the Δ V2 / 2 terms omitted in B.E., and compare these with the magnitude of the ℱ terms.arrow_forward
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