Data Driven Decision Making.indd 1
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Data Driven Decision Making.indd 2
24-02-2014 PM 05:42:30
Table of Conte
CEMM 260
Test#2 solutions
1. A. For an Al-20%Mg alloy
i.
First solid forms at about 540oC
ii.
It is phase, about 7% Mg
iii.
Calculate pro-eutectic from lever rule, just above eutectic
temperature X proeutectic = (35.6 20)/(35.6 17.1) = 0.843
iv.
At 300oC,
CEMM 260 Final Examination
No books or notes may be consulted during this examination
1. Ceramic structures
a. (10 points) The CsCl structure is a simple cubic structure with a = 2(R+r)/1.732, and
the NaCl structure is a fcc structure with a = 2R +2r. Dec
CEMM 260
1. A. For CaO, r/R = 0.714. Less than 0.732 and greater than 0.414, so CaO has CN
= 6, ie. The NaCl structure.
Then = 4 x (40+16)/a3 a = 2r +2R = 2x0.140 + 2x 0.100 = 0.48 nm
= 224/(0.48)3 = 2025 amu/nm3 = 3364.6 kg/m3 = 3.36 g/cm3
B. In the CsC
CEMM 260/261
Hourly Examination #1
No books or notes may be consulted during this examination.
1. Gold (Au) has the fcc crystal structure, an atomic weight of 197 amu, and an atomic
radius of 0.144 nm. Niobium (Nb) has the bcc crystal structure, an atomic
CEMM 260/261
Review for Test #2
From Chapter 8 Mostly, just know the definitions of the major phenomena described in
this chapter. Section 8.1 Impact Energy, (Fig 1 for Charpy test), Ductile to Brittle
Transition Temperature (Figure 8.3)
Section 8.3, Fati
CEMM 260/261
Midterm Exam #2
No books or notes may be consulted during this examination.
1. Phase diagram question. Refer to the attached phase diagram for the Sn-Au system
(Figure 9.34 from 2004 textbook. Ill try to get an electronic version of this.). T
CEMM 260/261
1.
2.
3.
4.
Do problem 2.2 from Shackelford
Do problem 2.6 from Shackelford
Do problem 2.49 from Shackelford
Using the electronegativity data from Table 2.21 (page 52), estimate whether the bonding
between the following atoms will be ionic, c
CEMM 260/261 Midterm Examination #1
1. A. For Au, a = 2*21/2 *0.144 nm = 0.407 nm; = 4 * 197 /a3 = 11663 amu/nm 3
For Nb, a = 4 *0.143/(3 1/2 )nm = 0.330 nm; = 2 * 93 /a3 = 5164 amu/nm 3
density ratio of Nb/Au = 0.443
B. Plane is rectangle a 21/2 a contai
Solutions Midterm #1 CEMM 260/261
1 A. Al = 4 x 27 amu/a3 A = 2 x 21/2 x 0.143 nm = 0.404 nm
Al = 1632 amu/nm3
1632 amu/nm3 /(6.02 x 1023 amu/g x (10-9 m/nm)3) = 2.71x 106 g/m3 = 2.71 g/cm3
B. Planar density in (100) = 2 atoms/a2 = 12.22 atoms/nm2
C. Line
CEMM 205
Quiz 8, Spring 2001
041301
NAME:_SSN:_
DUE: Friday, 20 April 2001.
(1) Problem 2 of Section 11.13.
(2) Problem 21 of Section 11.13.
cwuUIC
041301
CEMM 205
Quiz 7, Spring 2001
040601
NAME:_SSN:_
DUE: Wednesday, 11 April 2001.
(1) Problem 1 of Section 10.13.
(2) Problem 14 of Section 10.13.
(3) Analyze the statically indeterminate structure of Problem 6 of Section 10.13. Use the
method of consistent
CEMM 205
Quiz 6, Spring 2001
033001
NAME:_SSN:_
DUE: Monday, 2 April 2001
Use the conjugate beam method to construct the complete slope and deflection diagrams for the
prescribed simple beam and loading ( E = 200 GPa; I = 200 x 10 6 mm 4 ). Determine the
CEMM 205
Quiz 4, Spring 2001
030201
NAME:_SSN:_
Construct the influence lines for the vertical reaction at D, horizontal reaction at D,
reaction at B, moment at B and shear at C. You may use any method.
cwuUIC
030201
CEMM 205
Quiz 2, Spring 2001
020201
NAME:_SSN:_
(a) Determine the support reactions for the truss shown in the figure. (b) Determine the
force in member ab by the method of section. (c) What is the force in member ch?
cwuUIC
020201
CEMM 205
Quiz 1, Spring 2001
012601
NAME:_SSN:_
(a) Determine the support reactions for the structure shown in the figure. (b) Introduce an
appropriate virtual displacement and calculate the vertical reaction at A by the method of
virtual work.
cwuUIC
012
CEMM 205
Final Exam, Spring 2001
Monday, 04/30/01
NAME:_SSN: _
(1) Draw the bending-moment diagram for the L-frame shown in Figure 1. Determine the
vertical and horizontal displacements of joint C by any method. The members are made of Oak
(E = 12 GPa) an
CEMM 205
EXAM II, Spring 2001
040401
NAME:_SSN:_
(1) The member length changes shown in the truss
are induced by an uneven temperature variation.
Compute the vertical deflection of point D by the
virtual work method. The truss is formed by
3x4x5 triangles
CEMM 205
EXAM I, Spring 2001
021601
NAME:_SSN:_
(1) Construct the shear and moment diagrams of the 2-member structure. Express the
shear and moment of the vertical member in terms of the indicated x-coordinate.
x
(2) Show that the vertical reactions at a
CEMM 203
Quiz 9, Spring 2001
040601
NAME:_SSN:_
DUE: Monday, 9 April 2001.
(1) The three-segment cantilever assembly ABCD is made of three straight members of lengths
a, b, and c. All three members have constant flexure rigidity EI. A vertical load P is a
CEMM 203
Quiz 8, Spring 2001
033001
NAME:_SSN:_
A cantilever beam AB supporting a single couple M* at C is fixed at end B. Determine the
deflection A and slope A at the free end. Draw the bending moment diagram and then
integrate the second-order differen
CEMM 203
Quiz 7, Spring 2001
030901
NAME:_SSN:_
A simple beam of wide-flange cross section supports a uniform load of intensity q=3.0
k/ft on a span of length L=10 ft. The dimensions of the cross section are h=10.5 in., b=7
in., and t w = t f = 0.4 in. (a
CEMM 203
Quiz 6, Spring 2001
030201
NAME:_SSN:_
A laminated wood beam on simple supports is built up by gluing together three 2 in. x 4
in. boards to form a solid beam 4 in. x 6 in. in cross section. The allowable shear stress in
the glued joints is 50 ps
CEMM 203
Quiz 5, Spring 2001
022301
NAME:_SSN:_
A cantilever beam AB, loaded by a uniform load and a concentrated load, is constructed
of a channel section. Find the maximum tensile stress t and maximum compressive
stress c if the cross section has the di
CEMM 203
Quiz 4, Spring 2001
021601
NAME:_SSN:_
Draw the shear and moment diagrams for the two problems.
P = 1.6 kN
P = 1.6 kN
A
B
1m
1m
1m
M* = 1.6 kN-m
M* = 1.6 kN-m
A
B
1m
cwuUIC
1m
1m
021601
CEMM 203
Quiz 3, Spring 2001
020201
NAME:_SSN:_
A circular tube of outer diameter d 3 = 70 mm and inner diameter d 2 = 60 mm is welded
at the right-hand end to a fixed plate and at the left-hand end to a rigid end plate. A solid
circular bar of diameter d
CEMM 203
Quiz 2, Spring 2001
012601
NAME:_SSN:_
A prismatic bar AD is subjected to three loads acting at points B, C, and D, respectively,
as shown in the figure. Each segment of the bar is 20 in. long. The bar has crosssectional area A = 1.4 in.2 and is