Course website http://www.eng.usf.edu/~kaw/class/composites Course Resources http://www.eng.usf.edu/~kaw/class/composites/resources.html Learning Management System (LMS) website https://usflearn.instructure.com
(Grades will be posted here) Piazza – an online discussion board http://piazza.com/usf/fall2013/eml4230
(This is where everything will be posted and discussed). Postings can be done
anonymously. Email: Send personal issues of concern to kaw@usf.edu
Define a composite,
enumerate advantages and drawbacks of composites over monolithic materials,
and discuss factors which influence mechanical properties of a composite Classify composites,
introduce common types of fibers and matrices, and manufacturing, mechanical
properties and applications of composites Recycling of
composites Introduce terminology
used for studying mechanics of composites
Review definitions of
stress, strain, elastic moduli and strain energy Derive stress-strain
relationships for different types of materials Derive stress-strain
relationships for a unidirectional/bidirectional lamina Find the engineering
constants of a unidirectional/bidirectional lamina in terms of the stiffness
and compliance parameters of the lamina Derive stress-strain
relationships, elastic moduli, strengths, thermal and moisture expansion
coefficients of an angle ply based on those of a unidirectional/bidirectional
lamina and the angle of the ply
Develop concepts of
volume and weight fraction of fiber and matrix, density and void fraction in
composites Find the nine
mechanical and four hygrothermal constants: four elastic moduli, five
strength parameters, two coefficients of thermal expansion and two
coefficients of moisture expansion of a unidirectional lamina from the
individual properties of the fiber and the matrix, fiber volume fraction, and
fiber packing Discuss the
experimental characterization of the above nine mechanical and four
hygrothermal constants
Write the code for
laminate stacking sequence Develop relationships
of mechanical and hygrothermal loads applied to a laminate to strains and
stresses in each lamina Find the elastic moduli
of laminate based on the elastic moduli of individual laminas and the
stacking sequence Find the coefficients
of thermal and moisture expansion of a laminate based on elastic moduli,
coefficients of thermal and moisture expansion of individual laminas, and
stacking sequence
Analyze the
significance of stiffness, and hygrothermal and mechanical response of
special cases of laminates Establish the failure
criteria for laminates based on failure of individual lamina in a laminate Design laminated
structures such as plates, drive shafts and thin pressure vessels subjected
to in-plane and hygrothermal loads Introduce other
mechanical design issues in laminated composites
The measurable outcomes expected of all
graduates of the program are stated below: a. An ability to apply
knowledge of mathematics, science and engineering; b. An ability to
design and conduct experiments, as well as to analyze and interpret data; c. An ability to
design a system, component or process to meet desired needs; d. An ability to
function on multi-disciplinary teams; e. An ability to
identify, formulate, and solve engineering problems; f. An understanding of
professional and ethical responsibility; g. An ability to
communicate effectively; h. The broad
educational necessary to understand the impact of engineering solutions in a
global/societal context; i. A recognition of
the need for and an ability to engage in life long learning; j. A knowledge of
contemporary issues; and, k. An ability; to use
the techniques, skills, and modem engineering tools necessary for engineering
practice; 1. A
knowledge
of chemistry and physics with depth in both. m.
An ability to apply advanced mathematics through multivariate calculus and
differential equations. n. A familiarity with
statistics and linear algebra; o.
The ability to work professionally in both thermal and mechanical systems
areas including the design and realization of such systems.
Students would have fundamental knowledge in
mechanical analysis and design of structures made of composite materials
Mechanics of
Materials, EML 3500 or equivalent. Computational Methods,
EML3041 or equivalent. You should have a C- or higher in both
courses.
We will also discuss the course via Piazza https://piazza.com/class#spring2013/eml4230
Test 1: 15%
Monday Test 2: 20% Friday Portfolio Submission at Test 2: 10% Test 3: 20%
Friday Portfolio Submission at Test 3: 10% Comprehensive Test (Chapters 2-5 only): 25%
Grade A+
is 95-100 (4.00) Grade
A is 90-94 (4.00) Grade A- is 86-89 (3.67) Grade B+ is 83-85 (3.33)
Grade B is 80-82 (3.00) Grade
B- is 76-79 (2.67) Grade C+ is 73-75 (2.33) Grade C is 70-72 (2.00) Grade C– is 66-69 (1.67) Grade D+ is 63-65 (1.33)
Grade D is 60-62 (1.00) Grade
D is 56-59 (0.67) Grade F is 0-55 (0.00). Your final grade will be
rounded off as follows at the end of the course. The integer part of your course after
adding 0.999999 will be recorded as your final
grade. For example, 84.000001 will be
rounded off as 85, and 84.0000009 will be rounded off as 84. Course grades will be
evaluated on the above percentages and a letter grade will be assigned
to you as outlined in the University catalog for undergraduate students (2013-2014). Course grades will be
evaluated on percentage score and a letter grade will be assigned to
you as outlined in the University catalog for undergraduate/graduate students
(2013-2014).
_______________________________________________________________ TOPIC LECTURE HOURS __________________________________________________________________ CHAPTER 1 6 Introduction to Composite Materials CHAPTER 2 12 Macromechanical Behavior of a Lamina CHAPTER 3 6 Micromechanical Behavior of a Lamina CHAPTER 4 6 Macromechanical Behavior of a Laminate CHAPTER 5 8 Design and Failure of a Laminate __________________________________________________________________ All the examinations and tests stated above
will be closed book and closed notes.
A formula sheet made by the instructor may be allowed to be used in
Tests 2, 3 and final examination.
Course grades will be evaluated on the above
percentages and a letter grade will be assigned to you as outlined in the
University catalog for undergraduates and graduates (2013-2014).
In the event of an emergency, it may be
necessary for USF to suspend normal operations. During this time, USF may opt to continue
delivery of instruction through methods that include but are not limited to: Blackboard, Elluminate, Skype, and email messaging
and/or an alternate schedule. It is
the responsibility of the student to monitor Blackboard site for each class
for course specific communication, and the main USF, College, and department
websites, emails, and MoBull messages for important general information.
Regrading of a test, homework, or computer
project should be requested within five working days
of it being returned to you. Regrading
after the final grade has been assigned for the
course will be allowed only in extreme circumstances. Mistakes in the grade book entries should be rectified as soon as possible to avoid any
change of grade issues. You will need
a copy of all your graded tests for verification. KEEP ALL YOUR GRADED PAPERS TILL THE END OF THE COURSE.
Grades will be updated
on the web (https://learn.usf.edu) after grading of each est.
NO make up tests will be
given. However, in the event of
a serious illness (physician's statement documenting severity of illness
required), death in the family or other legitimate, documented, verifiable
emergency resulting in the absence from a schedule test, each case will be evaluated separately. The decision of the instructor is
final. An example of a make-up score
is that if you miss a test, you may be given the
same grade as another exam, and so on.
Curving of make-up exam grades is at the discretion of the instructor.
Notification of absence must
be given before the commencement of the scheduled examination or test
to me. You need to type a professional
memo (no e-mails will be accepted) about your absence addressed to me as soon
as possible. Attach any documentation
with it. Do not presume that your reasons for missing
an examination or test are acceptable unless authorization is
given to you.
Students who need to be absent under this rule
must provide written notice of date(s) to me by the second-class meeting.
“Students
in need of academic accommodations for a disability may consult with the
office of Students with Disabilities Services to arrange appropriate
accommodations. Students are required to give reasonable notice prior to
requesting an accommodation.” The website is http://www.sds.usf.edu/index.htm.
If you are found
cheating on any of the homework, quizzes or tests, you will get a ‘FF’ for
the whole course, and referred to the Dean’s office for further process or
appeal. Academic disruption includes excessive side
talking and lack of respect for your fellow classmates and the instructor,
and will be handled as per the undergraduate/graduate
catalog of 2013-2014.
All
All
You
can use any resource to do the following matrix algebra procedures: a)
Get a solution to a set of equations b)
find the inverse of a matrix 2.1
2.2-2.3
(see errata sheet
for revised numbers) 2.6-2.19 2.20.
Can use Sbar and Qbar from PROMAL 2.21.
Can use MATLAB 2.22.
Can use Sbar and Qbar from PROMAL 2.23.
Can use MATLAB 2.24. Can use Qbar and Sbar from PROMAL. 2.25-2.26 2.27-2.28. Use the answers
given in the solutions
document. It is enough to show an
example. No need to
prove the inequalities. Can use MATLAB to plot graphs. 2.29-2.30. Can use MATLAB. 2.31-2.37 2.38.
Can Use MATLAB 2.41. Can use MATLAB.
Pages
203-239 Pages
271-295 (skip derivations of the analytical strength models but understand
the inputs in the resulting formulas on pages 277-293) Pages
296-307
You can use any resource to do the following
matrix algebra procedures: a)
Get a solution to a set of equations b)
find the inverse of a matrix 3.1-3.11 3.14-3.15 3.17-3.18 3.19-3.20.
You can use computational systems such as MATLAB. Clearly show the inputs and outputs of the
problem in the program. 3.22-3.23.
You can use computational systems such as MATLAB. Clearly show the inputs and outputs of the
problem in the program. 3.24-3.25
All
You
can use any resource to do the following matrix algebra procedures: a)
Get a solution to a set of equations b)
find the inverse of a matrix 4.1-4.6 4.7.
Calculate Nx and Mx by hand, rest you can use MATLAB 4.8 Qbar from PROMAL 4.9-4.12 4.13. [A], [B], [D] from PROMAL. Just find Mx shared by the top ply. 4.14.
You can use MATLAB 4.15.
[A], [B], [D] from PROMAL 4.16-4.19.
You can use PROMAL
All
You
can use any resource to do the following matrix algebra procedures: a)
Get a solution to a set of equations b)
find the inverse of a matrix 5.1-5.5 5.6. [A], [B], [D]
from PROMAL. 5.7-5.11. 5.12-5.24.
You can use PROMAL |