Strain distribution and rearrangement in a cracked and uncracked composite laminate

James G. Collins, Gregory P. Dillon, Christopher L. Muhlstein

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

Abstract

Forces that are applied to structures made from advanced composites generate complex strain distributions at the micro and mesolength scales. Furthermore, these strain fields evolve as damage accumulates static and dynamic conditions. Many studies have attempted to model or approximate deformation in advanced composites by accounting for the geometry and material properties of the components of the composite material system. However, such models have rarely been experimentally verified and are often unable to reliably predict failure because the details of the strain distributions at appropriate length scales are not known. This paper presents an application of digital image correlation to make real time, in-situ, strain measurements of distributions in a structural composite. These measurements show the evolution of deformation in composite architectures up to the point of matrix cracking, and capture the redistribution of strain following these initial failures. This technique can be utilized to identify architectural features associated with crack formation and their relationship to statistical measures of the microstructures.

Original languageEnglish (US)
Title of host publicationSAMPE '09 Spring Symposium Conference Proceedings: Changing Times. New Opportunities. Are You Prepared?
Volume54
Publication statusPublished - 2009
EventSAMPE '09 Spring Symposium Conference Proceedings - Baltimore, MD, United States
Duration: May 18 2009May 21 2009

Other

OtherSAMPE '09 Spring Symposium Conference Proceedings
CountryUnited States
CityBaltimore, MD
Period5/18/095/21/09

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All Science Journal Classification (ASJC) codes

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

Cite this

Collins, J. G., Dillon, G. P., & Muhlstein, C. L. (2009). Strain distribution and rearrangement in a cracked and uncracked composite laminate. In SAMPE '09 Spring Symposium Conference Proceedings: Changing Times. New Opportunities. Are You Prepared? (Vol. 54)