1.1
A jet turbine rotates at a velocity or 7,500 rpm. Calculate the stress acting on the
turbine blades if the turbine disc radius is 70 cm and the cross-sectional area is 15
cm2. Take the length to be 10 cm and the alloy density to be 8.5 gcm3.
Mass, m =
MSE 3003: MECHANICAL BEHAVIOR OF MATERIALS
FALL 2012
Homework No. 1 (SOLUTION)
Due: August 30, 2012
QUESTION No. 1
(a) A block of wood of cross-sectional area A = 1200 mm2 was compressed by an axial load P = 90 kN
when it fractured at a 45o angle to the l
MSE 3005 Spring 2016
Exam 3
Instructor: Professor Christopher Muhlstein
Prepared by Wade Lanning and Yoon-Joo Na
Problem 1
See Figure 7.17b on page 432 of Mechanical Behavior of Materials second edition by Meyers and
Chawla.
;
Note that thick specimens ar
MSE 3005 Spring 2016 Final Exam
Key
Instructor: Christopher L. Muhlstein
Prepared by Wade Lanning and Yoon Joo Na
Problem 1
The interactions between dislocations and impurity defects is governed by the stresses surrounding the
dislocations and impurity at
Problem 5
So were given that we will need to use the von Mises criterion:
2
2
(1 - 2 )2 + (2 - 3 )2 + (1 - 3 )2
1/2
y
And we are told that the principal stresses have a certain relationship:
1 = 3 2
2 = 2 3
and that yielding happens when 2 = 125 MPa
Th
Matthew Roth
MSE 3005 Project
Abstract:
Plaster of Paris was used to cast two types of samples. The first, cylindrical
samples, were tested to calculated fracture toughness and strength of the plaster of
Paris. The second type of sample, plaster jackets,
/ MSE 3005 Mechanical Behavior of Materials Spring 2016
Exam 1 Version A (100 points)
Name; Ag V
Only a commercial calculator and a straight edge can be used on this exam. The use of any other type of
electronic device or any reference materials is a viol
MSE 3005 Fall 2014 Exam 3 Key
Instructor: Preet Singh
Key prepared by Wade Lanning
Question 1
(A)
There are several possible reasons for material softening with deformation including:
Damage accumulation (cracks, microcracks, voids, crazing, etcs.) creati
MSE 3005 Fall 2014 Exam 1Key
Instructor: Preet Singh
Key prepared by Wade Lanning
Question 1
a) Given a 2.5 mm diameter rod 200 mm long loaded with a 2000 N weight
which decreases to 2.2 mm in diameter
i) The final length of the rod
The 2.2 mm diameter le
MSE 3005 Fall 2014
Exam 2 Key
prepared by Wade Lanning
Instructor: Preet Singh
Question 1
a) screw vs. edge dislocations
a)
Screw dislocation: Bergers vector b parallel to dislocation line l
Edge dislocation: Bergers vector b perpendicular to dislocaiton
Ch. 7 HW Solution Verification
Problem 8
For a through-thickness crack in an infinite plate, we can take Y = 1.
K=
a
In[2]:=
5.0 MPa
Out[2]=
1.98166
50 * I10-3 M m
m MPa
Problem 10
Ok, so were given a plate 30 cm wide with a centrally-located crack of wi
14.1 Many operations, such as machining, grinding, electroplating, and casehardening,
may induce residual stresses in a material. Discuss, in general terms, the effect of such
residual stresses on the fatigue life of the material.
In general, compressive
3.1 A polycrystalline metal has a plastic stress-strain curve that obeys Hollomons
equation.
K n
Determine n, knowing that the flow stresses of this material at 2% and 10%
plastic deformation (offset) are equal to 175 and 185 MPa, respectively.
= Kn
At
MSE 3005: MECHANICAL BEHAVIOR OF MATERIALS
Fall 2012
Homework No. 5
Due: Oct 4, 2012
QUESTION NO. 1
The following data are observed relating to deformation of Zinc single crystals having normal crosssectional area of 122 x 10-6 m2. In the table, is angle
MSE 3005
Mechanical Behavior of Materials
Group Project
Comparison of Strength and Fracture Toughness
of Two Natural Polymeric Composites
MSE 3005
Mechanical Behavior of Materials
Group Project
Comparison of Strength and Fracture Toughness
of Two Natural
MSE 3003: MECHANICAL BEHAVIOR OF MATERIALS
FALL 2012
TPICAL TEST QUESTIONS
Question 1: Will the elastic modulus of single crystal Ti (HCP) metal be significantly changed if:
(a) It is stressed to beyond its yield strength. Why or why not?
(b) It is cooled
MSE 3005: MECHANICAL BEHAVIOR OF MATERIALS
Fall 2012
Homework No. 5
Due: Oct 4, 2012
QUESTION NO. 1
The following data are observed relating to deformation of Zinc single crystals having normal crosssectional area of 122 x 10-6 m2. In the table, is angle
MSE 3003: MECHANICAL BEHAVIOR OF MATERIALS
FALL 2011
Homework No. 4
Due: Sep 27, 2012
QUESTION No. 1
The figures shown below represent an example, illustrating a dislocation Line AB.
(a) What is the character of the dislocation line
AB?
(b) If shear stres
MSE 3005: MECHANICAL BEHAVIOR OF MATERIALS
Test No.1
FALL 2012
September 18, 2012
ANSWER IN THE SPACE PROVIDED
NAME:-"'S=-~eM _
_
cfw_is points
Question 1:
Will the elastic modulus of single crystal Tungsten (BCC) metal be significantly changed if:
(a) It
MSE 3005 Mechanical Behavior of Materials Spring 2013
Exam 1 Version A (100 points)
Name: 1-
N0 notes, books, or reference materials of any kind are to be used on this exam. Please note that there is a list
of formulas attached to the back of the ex