Description: (Lecture, 3 credits) Introduction to the basic concepts of the mechanical behavior of composite materials. Analysis and performance of fiber-reinforced composites. Special design considerations and experimental characterization of composites.
Pre-requisite: CVE 220
Learning Objectives: After completing this course, the student will be able to:
- predict composite properties based on micromechanical theories
- perform stress and strain analysis in anisotropic and orthotropic materials having continuous fiber reinforcement
- model thermal/moisture effects on mechanical properties of CFRC composite materials.
- use Classical Lamination Theory to examine the role of individual plies on the global and local axial, bending and twisting deformation of laminates.
- use failure theories for multiaxial loading to determine the composite survivability.
Instructor: Professor H. Ghonem, Office: 101 Wales Hall, Phone: 874-2909, Email: email@example.com
Class Time and Place: TTh 11:00 am – 12:15 pm, Wales Hall 225
Office Hours: M 10:00 am – 12:00 pm, W 1:00 pm – 3:45 pm
Text: No required book
Reference Material: Handouts and lecture notes, suggested texts on composites:
- Stress Analysis of Fiber-Reinforced Composite Materials, Michael Hyer, McGraw Hill, 1997
- Mechanics of Composite Materials with MATLAB, George Voyiadjis and Peter Kattan, Springer-Verlag, 2005
- Homework 10%
- Composite Program 10%
- Quizzes 20%
- Exams 60%
- Attendance requires signing of attendance sheet during class.
- Participation includes class discussions or problem solving.
- No late homework will be accepted.
- Collaboration in the form of discussion of formulation of solutions or results is encouraged; however, each individual must work independently to create the solution, computer programs, and the homework report.
Course Requirements: Only the basic concepts introduced in an undergraduate strength-of-materials course is necessary. The course, however, requires the knowledge of matrix analysis as well as the use of computational programs (examples are: MATLAB, Mathematica, Maple, or macros in Microsoft Excel).
PART 1: INTRODUCTION:
- Composite Applications
- Composite Constituents: Fibers and Matrix
- Manufacturing Techniques:
PART 2: MECHANICS OF FIBER REINFORCED COMPOSITES
- Principles of Elastic-Anisotropy
- Elastic Constants of Unidirectional Composite
- Linear Stress–strain Relations for Fiber Reinforced
- Plane Stress-Strain Relations in Global Coordinates:
PART 3: CLASSICAL LAMINATION THEORIES
- The Kirchhoff Hypothesis
- Laminate Displacements, Strains and Stresses
- Force and Moment Resultant
- Laminate Stiffness: The ABD Matrix:
PART 4: FAILURE THEORIES
- Strength Ratio and Strength of a single layer of CFRC
- Max Stress Criterion
- Max Strain Criterion
- Tsai-Hill Criterion
- Tsai-Wu Criterion
- Fiber-Matrix Failure Criterion
- First Ply Failure
- Fiber Failure:
PART 5: EXPERIMENTAL CHARACTERIZATION
- Interface analysis of fiber reinforced composites
- Experimental characterization of composite materials