Reference: Lecture note
1. Derive the stress field around a screw dislocation.
2. Show that the stress and strain around a screw dislocation obey the equilibrium and
compatibility conditions.
To obey equilibrium conditions, show the above parameters satis
Reference: Lecture note
1. Derive the stress field around an edge dislocation.
2. Derive the force between edge dislocations.
3. Develop all the reactions of perfect dislocations in (111) and (11-1) and identify the
Lomer locks. Repeat for Cottrell-Lomer
1. Briefly introduce 5 methods to observe dislocations, using sketches if necessary.
Surface methods
If a crystal containing dislocations is subjected to an environment which removes atoms from the
surface, the rate of removal of atoms around the point
at
1. (30 pts.) For a 2-dimensional (x-y plane) hexagonal lattice as shown below. We can
define a 2-D unit cell with the lattice vectors a 1, and a 2. One can show that
1 3
1 3
a 1 = 3 a 0 (
a 2 = 3 a 0 (
,
,
)
)
2 2
2 2
(a) (10 pts.) Find the area of the un
2. (1)
The thermodynamic equilibrium in a system of constant mass, at a constant pressure and
temperature, and that does not execute any work in addition to the work against pressure, is
reached when the Gibbs free energy is minimum. The formation of poin
Introduction to the Thermodynamics of Materials
Fourth Edition
Introduction to the Thermodynamics
of Materials
Fourth Edition
David R.Gaskell
School of Materials Engineering
Purdue University
West Lafayette, IN
New York London
Denise T.Schanck, Vice Presi
Homework #2: due Wednesday, Oct 12, 2016
Gaskell
3.1
3.3
3.4
3.5
3.6
Additional Questions:
During the lecture, we have proven, using an argument based on entropy production, that the
thermal conductivity must be positive. Can you consider the followi
Homework #1: due Wednesday, Oct 5, 2016
Gaskell
2.1
2.2
2.5
Additional Questions:
(I) Please judge whether the following statements are T (True) or F (False).
[1] ( T or F ) Temperature (T) is an extensive variable.
[2] ( T or F ) Pressure (P) is an ex
Homework #3:
Reading: Ch. 3-4 plus:
Please review your notes of my lectures, particularly the irreversible thermodynamics and
microcanonical ensemble.
If you have time, please also read Ch. 5 and think about problems 5.1 and 5.2. We will
discuss these n
MATS 201A / NANO 265 / MAE271A / ECE 238A Exam 1 (Sample Questions)
Name: _
UCSD ID: _
Please read the following instructions carefully.
Please answer all questions.
Please write legibly. Illegible answers will be graded as incorrect.
Please make your ans
Homework #1: due Wednesday, Oct 5, 2016
Gaskell
2.1
2.2
2.5
Additional Questions:
(I) Please judge whether the following statements are T (True) or F (False).
[1] ( T or F ) Temperature (T) is an extensive variable.
[2] ( T or F ) Pressure (P) is an ex
Homework #3:
Reading: Ch. 3-4 plus:
Please review your notes of my lectures, particularly the irreversible thermodynamics and
microcanonical ensemble.
If you have time, please also read Ch. 5 and think about problems 5.1 and 5.2. We will
discuss these n
Homework #2: due Wednesday, Oct 12, 2016
Gaskell
3.1
3.3
3.4
3.5
3.6
Additional Questions:
During the lecture, we have proven, using an argument based on entropy production, that the
thermal conductivity must be positive. Can you consider the followi
Homework #5: Due Friday, Nov 4
Reading:
Ch. 6, including all numerical examples
Please review your notes of my lectures
Please do the full mathematical derivations for the Einstein and Debye models
yourselves
Homework
Homework #4: Due Friday, Oct 28 (noting a different due day this week due to Exam #1)
Reading: Ch. 3-4 plus:
Please review your notes of my lectures and read/review Ch. 5
Please also read/preview Ch. 6.
Gaskell
5.1
5.2
5.3
5.4
5.5
5.6
An Additiona
Homework #5:
Reading and Review:
Ch. 6 and 7, including all numerical examples
Please review your notes of my lectures (2/16 and 2/18) and my slides (2/23)
Please do the full mathematical derivations for the Einstein and Debye models
yourselves
Homewor
Homework #1: due Thursday, Jan 14, 2016
Gaskell
2.1
2.2
2.5
Additional Questions:
(I) Please judge whether the following statements are T (True) or F (False).
[1] ( T or F ) Temperature (T) is an extensive variable.
[2] ( T or F ) Pressure (P) is an ex
Homework #2: due Thursday, Jan 21, 2016
Gaskell
3.1
3.3
3.4
3.5
3.6
Additional Questions:
During the lecture (on January 14), we have proven, using an argument based on entropy
production, that the thermal conductivity must be positive. Can you consi
T : 44.5K, at which state the allouoms a,
' Va 1: 01.043
[3 am; Y mama-t 1n cquxhbum W1
cmeole and Va V? = 0.165 ems/mole. Also at the: mph: pom: S B - u = 459 UK and
"- 36K $5 on the. boundary betwean the elds
B! as x
5 fd 4537/15
. . .7/1:
55f 75
51"? 7
ECE 230A Midterm
Ted Robinson A53091824
PROBLEM 1
Part A
The basis for the 1st crystal contains one red atom and one blue atom that are 3
A apart as shown in figure 1.
FIG. 1: Basis for 1st Crystal
1.png
The basis for the 2nd crystal contains one red atom
UCSD New Laboratory Worker Checklist
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New Worker Name: _
Complete this form and store a copy with the labs safety training certificates
Is the new worker not a UCSD student or staff member? An Affiliate Account will be needed. Contact
your DSA to req
Homework #3:
Reading: Ch. 3-4 plus:
Please review your notes of my lectures, particularly the irreversible thermodynamics and
microcanonical ensemble.
If you have time, please also read Ch. 5 and think about problems 5.1 and 5.2. We will
discuss these n
Stabilization Wedges: Solving the Climate Problem for the Next 50
Years with Current Technologies
S. Pacala and R. Socolow
Science 305, 968 (2004);
DOI: 10.1126/science.1100103
If you wish to distribute this article to others, you can order high-quality c
A New Silicon pn Junction Photocell for Converting Solar Radiation into
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View online: http:/dx.doi.org/10.1063/1.1721
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