A methodology to study cyclic debond growth at constant mode-mixity and energy release rate

Amilcar Quispitupa (Invited author), Christian Berggreen (Invited author), Leif A. Carlsson (Invited author)

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

It is well known that face/core debond crack propagation is governed by the critical energy release rate (fracture toughness) and mode-mixity at the crack tip. Thus, the current study focuses on the developing of a methodology to perform fatigue crack growth experiments of debonded sandwich structures under well controlled cyclic energy release rate and mode-mixity. The proposed methodology uses the mixed mode bending (MMB) sandwich specimen and MMB test rig. Crack length measurements are based on an analytically available compliance expression. Accurate fatigue crack growth measurements and better control of loading conditions at the crack tip will be the most relevant outcomes of using the proposed fatigue test method.
Original languageEnglish
Title of host publicationICSS 9
EditorsG. Ravichandran
Publication date2010
Publication statusPublished - 2010
Event9th International Conference on Sandwich Structures - Pasadena, CA, United States
Duration: 14 Jun 201016 Jun 2010
Conference number: 9

Conference

Conference9th International Conference on Sandwich Structures
Number9
CountryUnited States
CityPasadena, CA
Period14/06/201016/06/2010

Keywords

  • Fatigue and fracture
  • Interface toughness
  • Sandwich composites
  • Crack growth in composites
  • Mixed mode fracture

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