Study of surface and sub-surface damage initiation and propagation in carbon/epoxy composites

Masoud Yekani Fard, Brian Raji, Seid Mohamadali Sadat, Aditi Chattopadhyay

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

Abstract

The objective of this study is to create a link between defects detected through nondestructive testing (NDT) and the mechanical performance of the composite structures using strain mapping technique. Flash Thermography, a conventional NDT technique, is used to predict detectable pre-existing surface and sub-surface irregularities and defects on stitch-bonded biaxial composite laminates. Attention is drawn to the homogenized mechanical behavior at the macro-scale and to damage initiation and propagation at the unit cell level. Damage onset and propagation are studied using time-dependent nonlinear regression of the strain field. Effects of the manufacturing and installation irregularities on damage initiation, propagation, and failure are monitored at the end of the loading process.

Original languageEnglish (US)
Title of host publication54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
DOIs
StatePublished - Aug 2 2013
Event54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Boston, MA, United States
Duration: Apr 8 2013Apr 11 2013

Publication series

Name54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

Other

Other54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
CountryUnited States
CityBoston, MA
Period4/8/134/11/13

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanics of Materials
  • Building and Construction
  • Architecture

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  • Cite this

    Yekani Fard, M., Raji, B., Sadat, S. M., & Chattopadhyay, A. (2013). Study of surface and sub-surface damage initiation and propagation in carbon/epoxy composites. In 54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference (54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference). https://doi.org/10.2514/6.2013-1764