151-0324-00L  Engineering Design with Polymers and Polymer Composites

SemesterSpring Semester 2017
LecturersG. P. Terrasi
Periodicityyearly recurring course
Language of instructionGerman


AbstractScope of neat and fibre reinforced polymers (FRP) for load bearing applications. State-of-the-art and trends. Design procedures for neat polymers under sustained, combined, and fatigue loading conditions. Stability and brittle fracture issues. Composition of FRP. Properties of fibre and matrix materials. Processing and design of FRP: laminate and net theory, stability, creep and fatigue behaviour.
ObjectiveImpart the basics to future mechanical, civil, and materials engineers for the engineering design with neat polymers and fibre reinforced polymers (FRP) for load bearing applications. In parallel to the presentation of the basics many practical applications will be treated in detail.
Content1. Introduction

1.1 Retrospective view
1.2 State-of-the-art
1.3 Prospects for the future
1.4 References


2. Engineering design with neat polymers and with random-oriented fibre
reinforced polymers

2.1 Scope of applications
2.2 Static loading
2.21 Tensile- and compressive loading
2.22 Flexural loading
2.23 Combined loading
2.24 Buckling
2.3 Fatigue
2.4 Brittle failure
2.5 Variable loading
2.6 Thermal stresses
2.7 To be subjected to aggressive chemicals
2.8 Processing of neat polymers
2.9 References


3. Composition and manufacturing techniques for fibre reinforced
polymers

3.1 Introduction
3.2 Materials
3.21 Matrices
3.22 Fibres
3.3 Manufacturing techniques
3.31 Hand lay-up moulding
3.32 Directed fibre spray-up moulding
3.33 Low pressure compression moulding
3.34 High pressure compression moulding
3.35 Pultrusion
3.36 Centrifugal casting
3.37 Filament winding
3.38 Robots
3.39 Remarks about the design of moulds
3.4 References


4. Engineering design with high performance fibre reinforced polymers

4.1 Introduction
4.2 The unidirectional ply (or lamina)
4.21 Stiffness of the unidirectional ply
4.22 Thermal properties of the unidirectional ply
4.23 Failure criteria for the unidirectional ply
4.3 rules fort he design of components made out of high performance fibre
reinforced polymers
4.4 Basics of the net theory
4.41 Assumptions and definitions
4.42 Estimation of the fibre forces in a plies
4.5 Basics of the classical laminate theory (CLT)
4.51 Assumptions and definitions
4.52 Elastic constants of multilayer laminate
4.53 Strains and curvatures in a multilayer laminate due to mechanical
loading
4.54 Calculation of the stresses in the unidirectional plies due to mechanical loading
4.55 Strains and curvatures in a multilayer laminate due to mechanical and thermal loading
4.56 Calculation of the stresses in the unidirectional plies due to mechanical and thermal loading
4.57 Procedure of stress analysis
4.58 Taking account of the non-linear behaviour of the matrix
4.59 Admissible stresses, evaluation of existing stresses
4.6 Puck’s action plane fracture criteria
4.7 Selected problems of buckling
4.8 Selected problems of fatigue
4.9 References
Lecture notesThe script will be distributed at the beginning of the course
LiteratureThe script is including a comprehensive list of references