ENGRMAE 155 Composite Materials and Structures (2014-2015)

ENGRMAE 155 Composite Materials and Structures

(Not required for any major. Selected Elective for CE, ChE, ME and MSE.)
Catalog Data:

ENGRMAE 155 Composite Materials and Structures (Credit Units: 4) Motivation for composite materials. Different classifications according to the nature of the matrix (PMC, MMC, CMC) and the reinforcement topology (fibers, whiskers, particulates). Mechanical properties. Failure mechanisms. Designing with composite materials. Advantages and limitations of homogenization techniques for numerical modeling. Prerequisite: ENGR 54; ENGRMAE 150 or ENGRCEE 150 or ENGR 150 . Chemical Engineering, Civil Engineering, Materials Science Engineering, and Mechanical Engineering majors have first consideration for enrollment. Concurrent with ENGRMAE 255. (Design units: 0)

Required Textbook:
. Edition, , 1969, ISBN-13 978-0195150971.

Recommended Textbook:
  • Chawla, K.K., Composite Materials: Science and Engineering, Springer-Verlag, 2001
  • Christensen, R.M., Mechanics of Composite Materials, Dover Publications, 2005
Lorenzo Valdevit
Relationship to Student Outcomes
This course relates to Student Outcomes: EAC a, EAC c, EAC e, EAC f, EAC i.
Course Learning Outcomes. Students will:

1. Understand how the need for man-made composite materials arises from empty regions in materials selection charts (EAC c)

2. Appreciate the rich variety of composite materials (EAC c, EAC i)

3. Learn the basic mechanical principles that describe the stiffness and strength of materials reinforced by long and short fibers, whiskers and particulates (EAC a)

4. Be exposed to the most common failure mechanisms of all classes of composites (EAC a, EAC c)

5. Assess advantages and limitations of the most commonly available homogenization techniques for the finite elements modeling of composite materials and structures (EAC a, EAC e)

6. Design composite materials and structures to meet realistic load-bearing capabilities under stringent constraints (EAC c, EAC e, EAC f)

Prerequisites by Topic

Basic materials science. Mechanics of materials. Familiarity with a commercial Finite Elements program (e.g. ABAQUS, COMSOL Multiphysics, MSC.Nastran).

Lecture Topics:
  • Introduction to and motivation for composite materials. Classifications of composite materials. Applications. Common reinforcements and matrices. Interfaces. (1 week)
  • Review of solid mechanics: stress and strain tensors. Review of elasticity: isotropic and orthotropic. (1 week)
  • Stiffness of a fiber-reinforced lamina: micro and macro mechanics (1 week)
  • Short fibers composites and the shear lag model (1 week)
  • Strength of a fiber-reinforced lamina: micro and macro mechanics (1 weeks)
  • Elastic behavior of multidirectional laminates (1 week)
  • The effect of temperature and humidity (1 week)
  • Finite Elements modeling of composite materials (1 week)
  • Strength of multidirectional laminates (1 week)
  • High-temperature composites for aerospace applications: CMCs and MMCs (1 week)
Class Schedule:

Meets for 3 hours of lecture and 1 hour of discussion each week for 10 weeks.

Computer Usage:

A commercial finite-element code (e.g. ABAQUS, MSC.Nastran, COMSOL Multiphysics) will be used to test the reliability of homogenization techniques available for the modeling of composite materials and structures.

Laboratory Projects:
Professional Component
Design Content Description
Laboratory Portion:
Grading Criteria:
  • Homework: 20%
  • Midterm: 30%
  • Final: 45%
  • Class participation: 5%
  • Total: 100%
Estimated ABET Category Content:

Mathematics and Basic Science: 0.0 credit units

Computing: 0.0 credit units

Engineering Topics: 4.0 credit units

Engineering Science: 4.0 credit units

Engineering Design: 0.0 credit units

April 15, 2014
Senate Approved:
April 29, 2013
Approved Effective:
2013 Fall Qtr