E344:Spring2014
ProblemSet5:Diffusion
SOLUTIONS
1) ThediffusioncoefficientforO2inCr2O3is4x1015cm2/sat1150oC,and6x1011cm2/sat
1715oC.Calculate:
a) theactivationenergy;
b) the constant D0.
2) Heliumgasisstoredat20oCunderapressureof5x105Painaglasscylinder50c
PiE344:Spring2014
Problem Set 9: Mechanical Failure
SOLUTIONS
1. Usetheinternettofindtwopictures(ortakeyouownpictures)oneofanengineeringcomponent
whichunderwentductilefractureandonewhichfailedinbrittlemanner.
a. Onthefiguresobtainedlabelmacroscopicfeature
E344:Spring2014
Problem Set 8: Deformation and Strengthening
SOLUTIONS
1) As discussed in Callister dislocation density is the total length of all the dislocation lines in a unit
volume of a given material. For example a highly deformed metal might have a
E344:Fall2013
Atomic Structure and Bonding
SOLUTIONS
*
On submitted solution sets, please remember:
1. staple multiple pages together
2. legibly write (e.g. print) you name and Student ID number
3. include your section (E-344A or E-344B)
4. include signed
E344:Spring2014
Problem Set 10: Phase Diagrams
SOLUTIONS
Thefollowingnickeloxidemagnesiumoxidephasediagramcanbeusedtoassistinanswering
questions13.
1. ANiO40mol%MgOceramicisheatedto2400oC.Determine:
a. Thecompositionofthesolidandliquidphasesinbothmol%andw
E344:Fall2013
Problem Set 3: Structure of Polymers, Microscopy, and Diffraction
SOLUTIONS
1) Givenapolymerblendofpoly(methylmethacrylate)withthefractionalcontentof
molecularweightsinthetablebelow,calculatethefollowing:
a) thenumberaveragemolecularweight
b
E344:Fall2013
Problem Set 7: Elasticity and Mechanical Testing
SOLUTIONS
1) The elastic behavior of materials can be described by atomic-scale bond-energy curves. When a
material is subjected to a force, the materials atomic bonds act like springs to resi
This exam consists of 8 pages. There are 5 problems. Questions 6-12 are multiple choice questions.
There are some constants given on page 7. A periodic table is included on page 8.
E-344 Summer 2011 Name: blgm
Midterm Exam
16 June. 2011 ID#:
Honor Pledge:
Problem Set 12
E-344
Due: Tuesday, 11 December at the beginning of lecture Fall 2012
*
On the solution set you submit, please:
1. staple multiple pages together;
2. legibly (print) write your name and 5-digit ID number; and
3. Include your section (A or B
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E344:Fall2013
Problem Set 10: Phase Diagrams
Due Monday Nov 25th @ 5:00 PM
o
1. ANiO20mol%MgOceramicisheatedto2200 C.Determine:
a. Thecompositionofthesolidandliquidphasesinbothmol%andwt%
b. theamountofeachphaseinbothmol%andandwt%
c. Assumingthedensityofth
E344:Spring2014
Problem Set 4: Point Defects and Diffusion
SOLUTIONS
1) AniobiumalloyisproducedbyintroducingtungstensubstitutionalatomsintheBCC
structure;eventuallyanalloyisproducedthathasalatticeparameterof0.32554nm
andadensityof11.95g/cm3.Calculatethenu
E344:Spring2014
Problem Set 6: Electronic Properties and Devices
SOLUTIONS
1) A1500Whairdryer(runningon120VoltACpower)mustcarry12.5Ampsofcurrenttogenerate
therequiredheatoutput(
120 12.5
1500
.
a) Whatistherequiredresistanceoftheheatingelementto
will mica/Wis:
SID: 4693.926 BjL
PART A: TRUE/FALSE: Cumulative Up to 20 Points
1) CIRCLE either TRUE or FALSE. If false CORRECT THE STATEMENT by crossing out and/or replacing the
LlNDERLlNED word or phrase: (2 pts each)
n -\
Xs
; a.QRUE/ FALSE: The p
Problem Set 2
E-344
Due: Tuesday, 11 September, 2012 at the beginning of lecture
Fall 2012
*
On the solution set you submit, please:
1. staple multiple pages together; 2. legibly (print) write your name and 5-digit ID number; and
3. Include your section (
Problem Set 4
E-344
Due: Tuesday, 25 September, 2012 at the beginning of lecture Fall 2012
*
On the solution set you submit, please:
1. staple multiple pages together; 2. legibly (print) write your name and 5-digit ID
number; and 3. Include your section (
Problem Set 11
E-344
Due: Thursday, 6 December at the beginning of lecture Fall 2012
*
On the solution set you submit, please:
1. staple multiple pages together;
2. legibly (print) write your name and 5-digit ID number; and
3. Include your section (A or B
E344:Fall2013
Problem Set 8: Deformation and Strengthening
SOLUTIONS
1) As discussed in Callister dislocation density is the total length of all the dislocation lines in a unit
volume of a given material. For example a highly deformed metal might have a d
HW 2: Polymeric Materials
1. Determine the degree of polymerization of polyethylene with a
number-average molecular weight of 150,000 g/mol and PI=1.09.
2. Classify the following polymers as (1) linear, branched, or crosslinked
(2) homopolymers or copolym
Homework 1: Atomic Packing
1. Iron has a BCC structure at room temperature and transforms to FCC
upon heating to 912C, it also has atomic radius of 0.126nm.
a. Draw a unit cell on a Cartesian coordinate system and highlight
the (1 0 0) face and the [1 1 1
SECTION I: Module IV: Phase Stability and Materials Processing
PART A: HAPPY HOLIDAYS YOU'VE BEEN GIVEN A TEN POINT HEAD START!
PART B: TRUE/FALSE:
1)
+10 POINTS
Cumulative Up to 20 Points
CIRCLE either TRUE or FALSE. If false CORRECT THE STATEMENT by cro
Problem Set 5
E-344
Due: Tuesday, 2 October at the beginning of lecture
Fall 2012
*
On the solution set you submit, please:
1. staple multiple pages together; 2. legibly (print) write your name and 5-digit ID
number; and 3. Include your section (A or B).
Problem Set 6
E-344
Due: Tuesday, 16 October at the beginning of lecture
Fall 2012
*
On the solution set you submit, please:
1. staple multiple pages together; 2. legibly (print) write your name and 5-digit ID
number; and 3. Include your section (A or B).
Problem Set 9
E-344
Due: Tuesday, 13 November at the beginning of lecture Fall 2012
*
On the solution set you submit, please:
1. staple multiple pages together;
2. legibly (print) write your name and 5-digit ID number; and
3. Include your section (A or B)
Problem Set 3
E-344
Due: Tuesday, 18 September, 2012 at the beginning of lecture
Fall 2012
*
On the solution set you submit, please:
1. staple multiple pages together; 2. legibly (print) write your name and 5-digit ID number; and
3. Include your section (
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Problem Set 8
E-344
Due: Tuesday, 30 October at the beginning of lecture
Fall 2012
*
On the solution set you submit, please:
1. staple multiple pages together; 2. legibly (print) write your name and 5-digit ID
number; and 3. Include your section (A or B).
Problem Set 10
E-344
Due: Thursday, 29 November at the beginning of lecture Fall 2012
*
On the solution set you submit, please:
1. staple multiple pages together;
2. legibly (print) write your name and 5-digit ID number; and
3. Include your section (A or
Problem Set 7
E-344
Due: Tuesday, 23 October at the beginning of lecture
Fall 2012
*
On the solution set you submit, please:
1. staple multiple pages together; 2. legibly (print) write your name and 5-digit ID
number; and 3. Include your section (A or B).