Kocaeli University / European Credit Transfer System (ECTS)

Name of Lecturer(s)

Assistant Prof. Dr. Sedat SÜSLER

Learning Outcomes of the Course Unit
Program Competencies-Learning Outcomes Relation

Learning Outcomes of the Course Unit

1) Introduce composite materials and the basic ideas about composite materials.
2) Develops the related necessary relations for the macromechanical analysis of a single lamina.
3) Develops equations for micromechanical analysis of a single lamina using individual mechanical properties of the composite components, fiber and matrix.
4) The macromechanics of a single lamina are expanded to improve the macromechanics of the laminate.
5) Methods for layered composite design and damage analysis are developed and other mechanical design issues are presented.

Program Competencies-Learning Outcomes Relation

		Program Competencies
		1	2	3	4	5	6	7	8	9
Learning Outcomes
	1	Middle	Low	Middle	No relation	Middle	High	No relation	Low	No relation
	2	Middle	Low	Middle	No relation	Middle	Middle	No relation	Low	No relation
	3	Middle	Low	Middle	No relation	Middle	High	No relation	Low	No relation
	4	Middle	Low	Middle	No relation	Middle	High	No relation	Low	No relation
	5	High	Middle	Middle	No relation	Middle	High	No relation	Middle	No relation

Mode of Delivery

e-course

Prerequisites and Co-Requisites

None

Recommended Optional Programme Components

Statics, Materials Science, Strength of Materials

Course Contents

This lecture introduces basic ideas about composites including why composites are becoming important in today’s market. It also includes types of fibers and matrices, manufacturing, applications, recycling, and basic definitions used in the mechanics of composites. Second, the lecture contains a review of basic topics of stress, strain, elastic moduli, and strain energy. Then, the mechanical behavior of a single lamina, including concepts about stress–strain relationship for a lamina, stiffness and strength of a lamina, and the stress strain response due to temperature and moisture change are introduced. The appendix on matrix algebra is also included in the lecture. Third, equations for mechanical properties of a lamina such as stiffness, strength, and coefficients of thermal and moisture expansion from individual properties of the constituents (long continuous fibers and matrix) of composites are developed. Experimental characterization of the mechanical properties of a lamina is introduced. Fourth, macromechanics of a single lamina are extended to the macromechanics of a laminate. Stress-strain equations for a laminate based on individual properties of the laminae that make it are developed. Stiffness and strength of a laminate and effects of temperature and moisture on residual stresses in a laminate are discussed. Special cases of laminates used in the market are introduced. Procedures for analyzing the failure and design of laminated composites are developed. Other mechanical design issues, such as fatigue, environmental effects, and impact, are introduced.

Weekly Schedule

1) Introduction to Composite Materials; Introduction, Classification, Recycling Fiber-Reinforced Composites, Mechanics Terminology
2) Macromechanical Analysis of a Lamina; Introduction, Review of Mechanical Definitions, Hooke’s Law for Different Types of Materials
3) Macromechanical Analysis of a Lamina; Hooke’s Law for Different Types of Materials, Hooke’s Law for a Two-Dimensional Unidirectional Lamina, Hooke’s Law for a Two-Dimensional Angle Lamina
4) Macromechanical Analysis of a Lamina; Engineering Constants of an Angle Lamina, Invariant Form of Stiffness and Compliance Matrices for an Angle Lamina
5) Macromechanical Analysis of a Lamina; Strength Failure Theories of an Angle Lamina, Hygrothermal Stresses and Strains in a Lamina
6) Micromechanical Analysis of a Lamina; Introduction, Volume and Mass Fractions, Density, and Void Content
7) Micromechanical Analysis of a Lamina; Evaluation of the Four Elastic Moduli
8) Midterm Exam
9) Micromechanical Analysis of a Lamina; Evaluation of the Four Elastic Moduli, Ultimate Strengths of a Unidirectional Lamina
10) Micromechanical Analysis of a Lamina; Ultimate Strengths of a Unidirectional Lamina, Coefficients of Thermal Expansion, Coefficients of Moisture Expansion
11) Macromechanical Analysis of Laminates; Introduction, Laminate Code, Stress–Strain Relations for a Laminate
12) Macromechanical Analysis of Laminates; Stress–Strain Relations for a Laminate, In-Plane and Flexural Modulus of a Laminate
13) Macromechanical Analysis of Laminates; In-Plane and Flexural Modulus of a Laminate, Hygrothermal Effects in a Laminate
14) Failure, Analysis, and Design of Laminates; Introduction, Special Cases of Laminates, Failure Criterion for a Laminate
15) Failure, Analysis, and Design of Laminates; Design of a Laminated Composite, Other Mechanical Design Issues
16) Final Exam

Planned Learning Activities and Teaching Methods

1) Lecture
2) Question-Answer
3) Discussion
4) Drill and Practice
5) Self Study
6) Problem Solving

Assessment Methods and Criteria

Contribution of Midterm Examination to Course Grade	40%
Contribution of Final Examination to Course Grade	60%
Total	100%

Language of Instruction

Turkish

Work Placement(s)

Not Required

Course Unit Title	Course Unit Code	Type of Course Unit	Level of Course Unit	Year of Study	Semester	ECTS Credits
Composite Materials Mechanics	HVA503	Elective	Master's degree	1	Spring	8