General fracture criterion for mixed-mode delamination in composite materials

Chao Zhang, Jifeng Xu, Zizi Lu, Yongming Liu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Interlaminar delamination is one of the most hostile threats to the structural integrity of composite materials. Many failure criteria have been proposed for mixed-mode delamination. Most of existing criteria are not based on underlying failure mechanisms and are obtained through fitting the experimental data from various fracture toughness tests. In this study, a new mixed-mode delamination failure criterion is developed based on a characteristic plane approach and the Tsai-Wu strength theory for composite materials. The proposed failure criterion is based on the different failure mechanisms under pure mode I and mixed-mode loadings. One advantage of the proposed failure criterion is that it only requires two experimental measurements under pure mode I and pure mode II loading and all other mixed-mode failure can be predicted without additional fitting. Verification with extensive experimental data available in the literature is performed to demonstrate the validity of the proposed criterion. A general good agreement is observed between the model predictions and experimental observations. Following this, the proposed new criterion is compared with several existing failure criteria.

Original languageEnglish (US)
Title of host publication53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
StatePublished - Dec 1 2012
Externally publishedYes
Event53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Honolulu, HI, United States
Duration: Apr 23 2012Apr 26 2012

Publication series

NameCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
ISSN (Print)0273-4508

Other

Other53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
CountryUnited States
CityHonolulu, HI
Period4/23/124/26/12

ASJC Scopus subject areas

  • Architecture
  • Materials Science(all)
  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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