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Failure Analysis _ Fractography of Composites


									                      Short Lecture Course

Failure Analysis & Fractography of Composites
             Monday - Tuesday, 1st – 2nd March 2010
              Dr Emile S Greenhalgh FIMMM CEng
     Roderic Hill Building, Prince Consort Road, Imperial College London, UK

                                           Course Aims
                                           Composite failure analysis and fractography is a
                                           growing discipline and has proved to be
                                           invaluable for studying fibre reinforced polymer
                                           composites. By interpreting the fracture surface
                                           morphology, the source and sequence of fracture
                                           can be determined. Failure analysis is a powerful
                                           research tool for solving real engineering
                                           problems and can deliver significant cost savings
                                           to component development.
                                           The aims of the course are:
                                            • Familiarisation of the procedures for failure
                                              analysis of composites
                                            • Identification of the morphology of the
                                              different fracture modes
                                            • Application of the basic methodology to the
                                              investigation of failed components
                                           Course structure
                                           The course will last for 8 hours of lectures,
                                           delivered over 2 days, with the course text
                                           provided to the delegates.
                                           Who should attend?
                                           The course should appeal to delegates with a
                                           basic knowledge of composites, together with a
                                           modest understanding laminate analysis. It will be
                                           suitable for delegates who are interested in
                                           applying fractographic methods, or wishing to
                                           expand their expertise in this field, or for more
                                           senior personnel who have responsibility for such
                                      Outline programme
   Date        Monday                   - Methodology and Tools for Failure Analysis (2 hours)
                   1                    - Fibre Dominated Failures (1 hour)
                                        - Delamination Dominated Failures (1 hour)

            Tuesday                     - Fatigue Failures (30 minutes)
                       nd               - Influence of Fibre Architecture (1 hour)
                   2                    - Defects and Damage (1 hour)
                                        - Case Studies (1½ hours)

Syllabus details - The following lecture topics will be given:
Methodology & Tools for Failure         Overview of health & safety issues. General procedures for failure
Analysis                                analysis. Initial visual examination and NDE. Methods for photographing
                                        fracture surfaces. Dissection. Verification of materials & construction.
                                        Optical & scanning electron microscopy. Sequencing cracks. Reporting.
Fibre Dominated Failures                Morphologies associated with unidirectional laminates under tension,
                                        compression, flexure and in-plane shear. Intralaminar fracture. Tension,
                                        compression and flexure in cross-ply laminates. Tension, compression
                                        and flexure in multidirectional laminates.
Delamination Dominated Failures         Generic fracture morphologies of matrix resins. Pure modes of fracture in
                                        unidirectional laminates; mode I & mode II. Features characteristic of
                                        mixed-mode (I/II) delamination. Delamination at multi-directional ply
                                        interfaces. Delamination under mode III & mixed II/III.
Fatigue Failures                        Basic fatigue morphologies of bulk polymers. Failures associated with
                                        interlaminar and intralaminar fatigue. Fracture morphologies associated
                                        with translaminar fatigue.
Influence of Fibre Architecture         Features particular to short-fibre composites. Fracture morphologies in
                                        filament wound materials. Morphologies of fabrics; woven and NCFs.
                                        Fractography of through-thickness reinforced materials (stitched and z-
                                        pinned laminates). Fractography of 3D composites.
Defects and Damge                       Defects associated with constituents (fibres and matrix) and the
                                        fibre/matrix interface. Lamina scale defects; manufacturing and in-service
                                        environmental degradation. Morphologies associated with in-service
                                        damage, such as that induced by impact.
Case Studies                            Failures due to overloading or design deficiencies. Failures due to
                                        material and manufacturing defects. Failures due to in-service factors.

                                            About the Lecturer
Emile S. Greenhalgh is a Reader at the Composites Centre at Imperial College London. Between 1987 and
2003, Dr Greenhalgh worked at RAE (now QinetiQ) in Farnborough in the Composite Structures Section,
conducting research on a broad range of aspects of polymer composites and has published over one hundred
reports and papers in this field. Upon joining RAE he was trained by David Purslow, one of the founders of
fractographic analysis of composites. Since then he has further developed the field of fractography, focusing
on delamination and damage tolerance issues. He has developed new methods for identifying crack growth
directions and failure modes in compression and delamination failure. Throughout his career he has used
fractographic analysis to underpin his research findings. He has initiated a European working group on
composites fractography, conducted numerous failure investigations and his expertise has led involvement in
high profile component failures (e.g. Formula One crashes) and as an expert witness in litigation cases.
Through this work, he is now one of the leading European experts on failure analysis of composites, and one
of a handful in the world. In September 2009 he published a book on Failure Analysis and Fractography of
Polymer Composites.

How to register?

To register for this course please complete and return the registration form (next page), by Email or fax: Places on the course are limited - EARLY BOOKING IS ADVISED.

Registration fee

Industrial Affiliate Members: £300     Research students: £300           Other: £550

The registration fee includes a copy of the course text book: ‘Failure Analysis and Fractography of Polymer
Composites”, Woodhead Publishing, (2009). Registration before 31st January 2010 will ensure this text will be
available for the delegates in time for the course. The fee does not cover accommodation.


The College provides a free hotel booking service and can help you to book a room either at the College or at a
local hotel. Please contact Conference Link on 020 7594 9507/9511, web:


The course will take place in the Aeronautics Department, Roderic Hill Building, Prince Consort Road, South
Kensington Campus, Imperial College London, SW7 2AZ. The nearest tube station is South Kensington (Circle,
District and Piccadilly lines). Car parking is not available on the College campus.

Cancellations and refunds

Refund requests must be made by Sunday 31st January. An administration fee of 25% will be charged on refunds.
We regret that no refunds can be made for cancellations received after that time and bookings made after that time
are non-refundable. Delegate substitutions can be made at any time without charge.

All cancellations must be made in writing and sent by email, fax or post.

Joining instructions

Information, including a map, will be sent to all delegates 10 - 14 days prior to the commencement of the course.
While every attempt will be made to ensure the material arrives in time, it is the participants’ responsibility to contact
the Composites Centre if no information has been received.


Information on the technical content of the course can be obtained from: Dr Emile Greenhalgh, The Composites
Centre, Tel: +44 (0)20 7594 5070, Email:

Queries about registration should be directed to: Ms Jie Du, Tel: +44 (0)20 7594 5102,

The Composites Centre reserves the right to amend the sequence of the lecture topics and to cancel lectures if necessary
due to circumstances beyond the Centre’s control. It will endeavour to provide delegates with as much notice as possible,
but will not accept liability for costs incurred by participants or their organisations for the cancellation of travel
arrangements and/or accommodation reservations as a result of the course being cancelled or postponed. If the course is
cancelled, fees will be refunded in full.
The Composites Centre                                                                                       Office Use Only
Failure Analysis & Fractography of Composites                                                               Ref:
Monday - Tuesday, 1st – 2nd March 2010                                                                      Received:
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                                      REGISTRATION INFORMATION (one per delegate)
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PAYMENT DETAILS (Payment must be received prior to attending the course)

     Industrial Affiliate Member - £300                                Research students - £300                             Other - £550

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ACCOMMODATION: Please note that the registration fee does not cover accommodation.
               The College provides a free hotel booking service and can help you to book a room either at the College
               or at a local hotel. Please contact Conference Link on 020 7594 9507/9511
Please Email, fax or post your form no later than 31st January 2010 to: Ms Jie Du, Room 263 Roderic Hill Building, South
Kensington Campus, Imperial College London, SW7 2AZ , Fax: +44 (0)20 7594 5078, email:
Registrations will not be accepted over the telephone. Reservations and refunds will only be accepted up to twelve working
days before the short course. Cancellations should be confirmed in writing. An administration fee of 25% will be charged on all
cancellations received up to seven days before the event. Substitutions may be made at any time without charge.

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