Chapter 6:
Mechanical Properties of Metals
Chapter 6 - 1
Key Objectives
Stress and strain: What are they and why are they
used instead of load and deformation?
Elastic behavior: When loads are small, how much
deformation occurs? What materials deform le
MSE 302
Review Guide
2016/3/4
Focus
Note that the following slides will cover
the contents in our mid-term.
Things that are worthy of paying
attention to:
Calculation problems in HW 1.
Several important concepts: Mechanisms,
meaning of the terms appear in
5/9/2016
MSE 302 Final Exam
Please PRINT your answers.
1. Name and define K, KC, and KIC. Explain the differences and the conditions
under which each parameter applies. State the units for each parameter. (10%)
K is the stress intensity factor. It include
3/10/2016
MSE 302 Mid-term Exam
Please PRINT your answers.
1. What are the S and N axes on an S-N diagram, and what does the region to
the left and below the plotted line indicate for engineering designing
purpose? (10%)
S is the stress change, usually th
Fatigue Behavior of HighEntropy Alloys (HEAs)
M. A. Hemphill1, T. Yuan2, G. Y. Wang1, P. K. Liaw1, J. W. Yeh3, C. W.
Tsai3, L. J. Santodonato1,4, A. Chuang1, and Z. Tang1
1.
Department of Materials Science and Engineering, University of
Tennessee, Knoxvil
MSE 302
Homework #1
Due date: 2/25/2016
From Textbook Hertzberg Fifth Edition
9.2
What are ratchet lines, and how are they arranged with respect to the fatigue crack
front and any clamshell marks that may also be present?
9.4
What role can a notch or a fl
MSE 302
Homework #3
Due date: 4/14/2016
From Textbook Hertzberg Fifth Edition
6.2
Write Griffiths expression for the fracture stress of a material under plane
stress conditions. Identify which parameters are applied and which are
material constants.
6.6
S
5/9/2016
MSE 302 Final Exam
Please PRINT your answers.
1. Name and define K, KC, and KIC. Explain the differences and the conditions
under which each parameter applies. State the units for each parameter. (10%)
K
24 MPa m
2. A thin-walled cylinder of a h
MSE 302
Homework #2
Due date: 4/7/2016
From Textbook Hertzberg Fifth Edition
10.14 Is the Paris Power Law (Eq. 10-3) relevant for all conditions of fatigue
crack growth?
da
m
=A K
dN
10.15. When does the mean stress level affect fatigue crack propagation
MSE 302
Review Guide
2016/4/29
Focus
Note that the following slides will cover most
of the concepts in our final exam.
Things that are worthy of paying attention to:
Calculation problems in HW 1,2,3.
The following slide
Important Concepts
They were not me
3. Mechanics of Fracture
Griffith Theory
Stress Analysis of Cracks
1
The fracture behavior of a given structure will be
dependent upon the stress level, the presence of a
flaw, material properties, and the mechanisms by
which the fracture proceeds to comp
Introduction To Materials Science and Engineering, Ch. 1
Chapter 1 Materials for Engineering
A fly-by during deployment of the aircraft carrier USS
Stennis. The pilot was grounded for 30 days, but he
likes the picture and thinks it was worth it.
Universit
Introduction To Materials Science, Chapter 3, The structure of crystalline solids
Chapter Outline
How do atoms arrange themselves to form solids?
Fundamental concepts and language
Unit cells
Crystal structures
Simple cubic
Face-centered cubic
Body-cen
Introduction To Materials Science, Chapter 6, Mechanical Properties of Metals
Chapter Outline
Mechanical Properties of Metals
How do metals respond to external loads?
Stress and Strain
Tension
Compression
Shear
Torsion
Elastic deformation
Plastic D
Chapter 6 Homework Solutions
6.3 A specimen of aluminum having a rectangular cross section 10 mm 12.7 mm (0.4 in. 0.5 in.) is pulled in
tension with 35,500 N (8000 lbf) force, producing only elastic deformation. Calculate the resulting strain.
Solution
Th
Chapter 5 Homework Solutions
5.1 Briefly explain the difference between self-diffusion and interdiffusion.
Solution
Self-diffusion is atomic migration in pure metals-i.e., when all atoms exchanging positions are of the same
type. Interdiffusion is diffusi
Introduction To Materials Science FOR ENGINEERS, Ch. 5
Diffusion
MSE 201
Callister Chapter 5
1
University of Tennessee, Dept. of Materials Science and Engineering
Introduction To Materials Science FOR ENGINEERS, Ch. 5
Goals: Diffusion - how do atoms move
Chapter 4 HW Solutions
Assignment: Chapter 4 problems: 2, 5, 11, 12, 20, 25, 26, 27
4.2 Calculate the number of vacancies per cubic meter in iron at 850 C. The energy for vacancy formation is 1.08
eV/atom. Furthermore, the density and atomic weight for Fe
Chapter 2 Homework Solutions
2.2 Chromium has four naturally-occurring isotopes: 4.34% of 50Cr, with an atomic weight of 49.9460 amu, 83.79%
of 52Cr, with an atomic weight of 51.9405 amu, 9.50% of 53Cr, with an atomic weight of 52.9407 amu, and 2.37% of
5
Chapter 3 HW Solutions
Assignment: Chapter 3 problems 2, 5, 10, 14, 30, 41, 52
3.2 If the atomic radius of aluminum is 0.143 nm, calculate the volume of its unit cell in cubic meters.
Solution
For this problem, we are asked to calculate the volume of a un
BME 271
Homework 4
Trenton Jake Hinson
%Homework 4
%Question 1
%Part A
format long
intergal1 = (2/sqrt(pi)*integral(@f1,0,Inf,'AbsTol',1e-12)
T = 0.01; %Sets the initial value
er = 1; %Sets the allowed error
while er > 0.001; %Beings the while loop
Int1Va
Homework #4
The due date is Feb 19, 2016, 10:00am. Electronic copy of homework must be submitted to the
Blackboard website AND a hardcopy is due in class.
1.
(25points) Given the function f (x) = e-x
2
1.1 (15points) Determine with MATLAB an integration i
BME 271
Homework 4
Trenton Jake Hinson
%Homework 4
%Question 1
%Part A
format long
intergal1 = (2/sqrt(pi)*integral(@f1,0,Inf,'AbsTol',1e-12)
T = 0.01; %Sets the initial value
er = 1; %Sets the allowed error
while er > 0.001; %Beings the while loop
Int1Te
%Homework 4
%Question 1
%Part A
format long
intergal1 = (2/sqrt(pi)*integral(@f1,0,Inf,'AbsTol',1e-12)
T = 0.01; %Sets the initial value
er = 1; %Sets the allowed error
while er > 0.001; %Beings the while loop
Int1Temp = (2/sqrt(pi)*integral(@f1,0,T);
e
Department of Mechanical, Aerospace and Biomedical Engineering
BME271
Homework 3
There are 4 exercises in this assignment. For each exercise you will have to write a single or series of
MATLAB commands. Make sure you place a comment before the code solvin
%Homework 3
%Exc 1
xvec= [-pi:.1:pi];
yvec=[-pi:.1:pi];
[xvec,yvec]=meshgrid(xvec,yvec);
z=(xvec).^2).*(yvec).^2);
subplot (3,1,1)
surf(xvec,yvec,z)
title ('Z by xvec by yvec')
MinValue=min(min(z) %There was a typo in the HMW Guide, so I assumed z
subplot
Department of Mechanical, Aerospace and Biomedical Engineering
BME271
Homework 2
There are 3 exercises in this assignment, first one worth 25 points, and the rest two worth 40 points for
each, for a total of 100 points. For each exercise you will have to