Module overview
This module provides an in depth coverage of the mechanics of fibre-reinforced polymer materials and structures. The core of the course encompass modelling of the 2D orthotropic lamina reduced from 3D continuum mechanics for anisotropic solids, classical laminate theory and the assumption of orthotropic material behaviour, structural analysis of composite laminates, and consideration of damage and prediction of failure. The students will gain an understanding of the deformation and failure behaviour of composite materials and structures through application to specific design problems. The concepts of damage and failure will be introduced along with details of assessing material behaviour through mechanical testing. A laboratory class will introduce some manufacturing processes. The laboratory activity also will facilitate the characterisation of mechanical behaviour of composite materials.
Linked modules
Pre-requisites: FEEG2005 or CENV2031
Aims and Objectives
Learning Outcomes
Subject Specific Intellectual and Research Skills
Having successfully completed this module you will be able to:
- Appreciate properties of modern composite materials and factors which determine their use.
- Demonstrate understanding of the factors involved in selecting manufacturing processes.
- Be able to apply concepts, theories and methods for analysis and design of composite structures to real-life applications.
- Demonstrate understanding of mechanics of composite materials and structures, fracture and failure mechanisms as applied to simple component design.
Full CEng Programme Level Learning Outcomes
Having successfully completed this module you will be able to:
- The design assignment is a group project and it is expected that all members are fully involved in both the formative presentation and the production of the final report. Peer assessment can be used in cases where group dynamic fails.
- The group assignment expects the students to design a discipline specific structure in composite materials, this could be a novel solution. It is expected that the students evaluate their solutions in areas of codes and standards (if applicable), through life issues such as maintenance and end-of-life disposal.
- As part of the individual assignment, the student must demonstrate understanding of classical laminate plate theory and its limitations applied to complex composite laminate lay-ups and sandwich structures.
- The group assignment expects the student to redesign a structure or part of a structure in composite materials and as such treat the solution as part of a complete system. This include joints, compatibility and the impact of the composite solution on the system as a whole.
- As part of the individual assignment students will learn to use experimental test results based on standards to obtain the Young’s modulus of a composite laminate assessing for basic mechanical properties and the variability in the results and comparing with predicted values from classical laminate plate theory.
- As part of the group assignment, design decisions and approaches to find solutions to the design of their chosen composite engineering structure must be justified using relevant technical literature.
- The group assignment expects the student to address the life cycle of the solution, including manufacturing issues, in-service life and end-of-life disposal.
- As part of the group assignment students must select and justify the composite materials to be used for their chosen engineering structure and the appropriate manufacturing process.
- An initial step of the group design is to assess their engineering structure for extreme loading scenarios such that the risk of occurance can be mitigated. In the individual assignment 2 the students are expected to evaluate the uncertainty in the experimental testing and to identify how the CLPT comparison can be used to incorporate the measured uncertainly.
- The group assignment is designed such that the students have to explore the use of composite materials as an alternative material for a structural element of an engineering system within their discipline. It is expected that they find and use available data which may be incomplete or have some uncertainty. It is expected that they use their engineering judgement to assess both the data used and the validity of the final solution.
Transferable and Generic Skills
Having successfully completed this module you will be able to:
- Searching literature.
- To apply theory to solve practical problems.
- Report writing.
- Optimise a problem.
- Apply a selection procedure.
Knowledge and Understanding
Having successfully completed this module, you will be able to demonstrate knowledge and understanding of:
- Applications of composites: past, present and future.
- Fibres and polymer resin materials: types and properties
- Introduction to joining of composite materials.
- Laminae and laminates: micro-mechanical models, modelling of the laminae, classical laminate theory
- Manufacturing methods, their processing characteristics and influence on the mechanical properties of composites
- An in-depth understanding of the overall topical area of composite materials including their properties, manufacturing, analysis and design.
- Fracture and failure.
- Modelling of layered composite beam and plate structures.
Subject Specific Practical Skills
Having successfully completed this module you will be able to:
- Understand testing procedures to obtain material properties for analysis.
- Apply understanding of composite theory to simple component design.
- Select an appropriate manufacturing method for a composite component.
- Understand the steps involved to manufacture a simple laminate.
Syllabus
Modern composite materials: Revision of fibres, matrix, thermosetting and thermoplastic resins.
Mechanics and design: material symmetry and anisotropy.
Elastic behaviour and strength of a single lamina.
Determining material properties by mechanical testing and micromechanical approaches.
Classical Laminate Theory (CLT).
Stress and failure analysis and damage mechanics of composite laminates.
Introduction to joining methods for composite materials and structures.
Manufacturing: Introduction to manufacturing processes, including contact moulding, resin infusion, resin transfer moulding, filament winding, vacuum bag/autoclave. The process variables are identified and their effect upon the quality, properties and economics discussed.
Applications: Case studies from various engineering sectors e.g. aerospace, automotive, energy, infrastructure and marine.
Learning and Teaching
Teaching and learning methods
Teaching methods include:
• lecture and tutorial sessions
• Group activity sessions (unsupervised)
• laboratory demonstration workshop
• Drop-in sessions for one-one
Learning activities include:
• Quizzes and tests on Blackboard.
• Project work for coursework assignment from Aerospace, Mechanical and Marine sectors.
• Individual laboratory based assignment and analysis.
| Type | Hours |
|---|---|
| Completion of assessment task | 50 |
| Follow-up work | 30 |
| Project supervision | 2 |
| Wider reading or practice | 20 |
| Practical classes and workshops | 2 |
| Seminar | 1 |
| Online Course | 5 |
| Lecture | 30 |
| Preparation for scheduled sessions | 10 |
| Total study time | 150 |
Assessment
Assessment strategy
Referral method - Normally the referral for this module consists of resubmission of the coursework/s on laboratory work and individual assignments, with the mark on Coursework Group project unchanged from the first attempt. In case the mark for the Coursework Group project is below the qualifying mark and alternative referralassignment will be provided. External repeat of this module is only possible if the Coursework Group project has been passed at the qualifying mark.Formative
This is how we’ll give you feedback as you are learning. It is not a formal test or exam.
Coursework
- Assessment Type: Formative
- Feedback: • Class discussions based on notes and examples • Discussion in laboratory sessions • Written feedback on marked laboratory report, group project and individual assignment • Computer based quizzes on course material • Feedback on project through class presentation • Group surgeries
- Final Assessment: No
- Group Work: No
Summative
This is how we’ll formally assess what you have learned in this module.
| Method | Percentage contribution |
|---|---|
| Continuous Assessment | 60% |
| Final Assessment | 40% |
Referral
This is how we’ll assess you if you don’t meet the criteria to pass this module.
| Method | Percentage contribution |
|---|---|
| Set Task | 100% |
Repeat Information
Repeat type: Internal & External