ME311
MATERIALS ENGINEERING
SPRING 2012
HOMEWORK #4
DUE DATE: February 16, before class
PROBLEM 1:
The measured density of a sample of bcc iron is 7.87 g/cm 3. If the lattice parameter of
this sample is 0.2866 nm, calculate the percentage of vacancies in
ME311
MATERIALS ENGINEERING
SPRING 2012
HOMEWORK #4
PROBLEM 1:
The measured density of a sample of Iron is 7.87 g/cm 3. If the lattice parameter of this
sample is 0.2866 nm, calculate the percentage of vacancies in this sample.
Hint: In the absence of vac
ME311
MATERIALS ENGINEERING
SPRING 2011
HOMEWORK #9
DUE DATE: April 8, before class
PROBLEM 1:
The microstructure of an iron-carbon alloy consists of pro-eutectoid ferrite and pearlite
where the mass fractions of these two phases are 0.286 and 0.714, resp
ME311
MATERIALS ENGINEERING
SPRING 2011
HOMEWORK #5
DUE DATE: March 4, before class
PROBLEM 1:
You are given the task of purchasing a Microscope with the highest resolution possible.
Among the instruments shown in the Table below, which microscope would y
ME311
MATERIALS ENGINEERING
SPRING 2012
HOMEWORK #6
DUE DATE: March 27, before class
PROBLEM 1:
As a mechanical analogue of thermodynamic phase metastability, consider the potential
energy of a block of mass m resting on a horizontal plane (figure below).
[010]
ME311
MATERIALS ENGINEERING
[110] 2011
SPRING
HOMEWORK #7
DUE DATE: March 25, before class
PROBLEM 1:
Estimate the number of spherical clusters in 1mm3 of copper at its melting point that
contain a) 10 atoms and b) 60 atoms. The atomic volume of li
ME311
MATERIALS ENGINEERING
HOMEWORK #1
PROBLEM 1:
In a collection of carbon atoms, 80% of the atoms contain 6 neutrons and 20% of the
atoms contain 8 neutrons. The atomic number for C is 6. Calculate the approximate
average atomic mass for this collectio
ME311
MATERIALS ENGINEERING
SPRING 2012
HOMEWORK #5
PROBLEM 1:
You are given the task of purchasing a Microscope with the highest resolution possible.
Among the instruments shown in the Table below, which microscope would you select?
What is the best reso
ME311
MATERIALS ENGINEERING
HOMEWORK #6
PROBLEM 1:
As a mechanical analogue of thermodynamic phase metastability, consider the potential
energy of a block of mass m resting on a horizontal plane (figure below). Based on the
information given in figure 2,
ME 311 (17825) MATERIALS ENGINEERING
Homework Assignment #8
Due at the beginning of the class on Wednesday, December 5 2012
EACH PROBLEM IS WORTH 10 POINTS
1. Rhodium has an atomic radius of 0.1345 nm and a density of 12.41 g/cm3. Determine
whether it has
MATERIALS ENGINEERING ME 311 (17825)
Homework #7
Due at the beginning of class on Friday, November 16, 2012
1. Imagine that we deform two specimens of original length l0. One sample is deformed in a tension test to
double its length, 2l0, whereas the othe
E M 3 11T est1
Show a ll w ork. E ach p roblem h as e qualv alue
a
1. A p article m ovesi n a s traight p ath w ith a n a cceleration : - 4s m /sec2
where s i s d istance. \ Vhen s - 0 t he p article h as a v elocity o f 6 m /sec.
Determinet he v elocity
ME 311 (17825) MATERIALS ENGINEERING
Homework Assignment #8
Due at the beginning of the class on Wednesday, December 5 2012
EACH PROBLEM IS WORTH 10 POINTS
1. Rhodium has an atomic radius of 0.1345 nm and a density of 12.41 g/cm3. Determine
whether it has
u*
ME 324 EXAM # 2
Name:
-i
N ovember 2 2 nd , 2011
UT E ID:
Equation sheet is attached at the end of t his exam.
Maximum t ime: I hr and 15 m in
<
Problem 1 (35 points):
The mechanism shown in the adjacent
figure includes a rotating slider at C and
three
ME 324 EXAM # 1
Name:
October 20 th , 2011
LJTEID:
Equation sheet is attached at the end of this exam.
Maximum time: 1 hr and 15 min
Problem 1 (35 points):
A particle (P) of mass m = 1 kg is sliding along the path Y(X) shown in the figure below.
Assume th
1
Atomic packing factor (APF):
4
n( 3 R3 )
VS
=
VC
a3
APF =
(1)
Density:
=
nA
a3 NA
(2)
A in the numerator is the atomic weight.
Critical radius:
r =
2Tm
Hf
1
T
(3)
a
+ k 2 + l2
(4)
Interplanar spacing:
dhkl =
h2
Braggs Law:
n = 2dhkl sin
(5)
The angle
MATERIALS ENGINEERING ME 311 (17825)
Homework Assignment #7
EACH PROBLEM IS WORTH 10 POINTS
Due at the beginning of class on Friday, November 16, 2012
1. Imagine that we deform two specimens of original length l0. One sample is deformed in a tension test