Researching the Processes Leading to the Failure of Composite Sandwich Structures

  • Alexander Fergusson
  • Amit Puri
  • John Dear
  • Andrew Morris
Conference paper

Abstract

There is much interest in reducing the propensity for onset of failure processes in composite sandwich materials. Already, composite sandwich materials are increasingly finding new applications and this will be more so if their propensity to failure can be reduced. Initial onset of a failure can sometimes be attributed to inherent shortcomings in the design and manufacture of the composite sandwich panels. Mostly, other failures can be attributed to the way the sandwich panels are used in the structure. The interest in this study is to simulate loading conditions that can be generated in composite sandwich panels when employed in different engineering structures and to investigate causes for failure processes to be initiated in these materials. The aims of the research reported on in this paper were:
  • To study the development and distribution of strain in composite sandwich panels when subjected to four-point flexure and the failure processes as they occur.

  • To relate the onset of failure processes in producing delamination and other types of failure.

  • To develop the use of DIC and other methods to assist in evaluating the integrity of different types of composite sandwich structure and also for in-service monitoring of these panels.

Keywords

Fatigue Foam 

References

  1. 1.
    ASTM Standard Test Method for flexural properties of sandwich constructions. C393, 1994.Google Scholar
  2. 2.
    http://www.gom.com Deformation measurement system developed by GOM mbH in Germany.
  3. 3.
    Fergusson, A. Resin infusion of composite sandwich structures for skis and snowboards. MSc Dissertation, Imperial College London, 2005.Google Scholar
  4. 4.
    Puri, A. Digital image correlation applied to wind turbine structures. MEng Final Year Project, Imperial College London, 2006.Google Scholar
  5. 5.
    Robinson, R. Flexural behaviour of composite sandwich panels. MSc Dissertation, Imperial College London, 2006.Google Scholar

Copyright information

© Springer 2007

Authors and Affiliations

  • Alexander Fergusson
    • 1
  • Amit Puri
    • 1
  • John Dear
    • 1
  • Andrew Morris
    • 1
    • 2
  1. 1.Department of Mechanical EngineeringImperial College LondonUK
  2. 2.Group Head Boiler Integrity, E.ON UKPower Technology Ratcliffe-on-SoarNottinghamUK

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