MEEM 6130 – Engineering Fracture
Mechanics
Department of Mechanical Engineering -
Engineering Mechanics
Michigan Technological University
Spring 2017
Instructor:
Prof.
Gregory M. Odegard
Office: MEEM 810
Phone:
(906)487-2329
Email:
gmodegar@mtu.edu
Classroom: MEEM 402
Time: M,W,F 10:05-10:55 am
Office hours: M,W 11:00 am -12:30 pm, or you can contact me by email to schedule an appointment.
Course description:
Development of the stress and
deformation fields present near the tips of cracks. Uses elasticity
solutions, plasticity corrections, and numerical methods in modeling
these fields. Introduces fracture criteria and explains the various
parameters used to develop these criteria.
Prerequisite
courses:
MEEM 5110 - Continuum
Mechanics/Elasticity
Required text:
Lectures:
Lectures will consist of material taken
from the required textbook as
well as from other sources.
All lectures will be recorded and available to students on Canvas.
Homework assignments:
The assignments are due by 4:00 pm of
the posted due date. No late assignments will be accepted, however, the
score of the lowest set will be discarded. Students are encouraged to
work with others to complete the assignments, however, all work turned
in must be original, not a simple copy of someone else’s work.
Students are encouraged to submit assignments directly to
Canvas.
However, if students want to submit paper copies and want to recieve
full credit, multiple pages must be stapled together (no paper clips or
fold-overs). The assignments will not be rigorously graded. Students
are responsible for making sure that they understand all of the
solution steps for each problem.
Project assignments:
Because finite element analysis (FEA)
and anlysis of fracture test data are critical components of modern fracture mechanics, students will be
assigned a series of projects that gradually build skills for using FEA
and experimental data anlysis techniques to analyze cracks. FEA is not a pre-requisite for this course, and
students with no background in FEA are still encouraged to take this
class. All necessary FEA skills will be developed within this course.
We will use ANSYS on these projects, which
is one of the major FEA commercial codes. A
written report will be required for each project assignment and will be
turning in via
Canvas.
The two exams
will cover material from the
homework problems and from the lectures.
Exam dates:
- Midterm exam: Friday, February 24, 2017 in class
- Final exam: Monday, April 24, 2017, 10:15 am - 12:15 pm, MEEM 402
Grading distribution:
Homework assignments: 10%
Project assignments: 30%
Midterm exam: 30%
Final exam: 30%
Final grades will be based on the the students' scores relative to the
average scores of the top members of the class. Therefore, class
performance plays a role in determining the final grade and the number
of students who can earn each grade is not limited. Letter
grades: A (100% to 92%), AB (<92% to 88%), B (<88% to 80%), BC (<80% to 78%), C (<78% to 70%),
CD (<70% to 68%), D (<68% to 60%)
Tentative Course Topics:
1. Linear-elastic fracture mechanics
2. Elastic-Plastic fracture mechanics
3. Fracture of metals, ceramics, polymers, composites
4. Environmentally-assisted cracking
5. Fatigue crack growth
6. Experimental fracture mechanics
7. Computational fracture mechanics
University policies: