Strain-Rate-Dependent Failure Criteria for Composite Laminates: Application of the Northwestern Failure Theory to Multiple Material Systems

Joseph D. Schaefer*, Brian T. Werner, Isaac M. Daniel

*Corresponding author for this work

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

1 Scopus citations

Abstract

The strain-rate-dependent matrix-dominated failure of multiple fiber-reinforced polymer matrix composite systems was evaluated over the range of quasi-static (10−4) to dynamic (103 s−1) strain rates using available experimental data from literature. The strain rate dependent parameter, m, was found to relate strain-rate dependent lamina behavior linearly to the logarithm of strain rate. The parameter was characterized for a class of laminates comprised of epoxy-based matrices and either carbon or glass fibers, and determined to be approximately 0.055 regardless of fiber type. The strain-rate-dependent Northwestern Failure Criteria were found to fit all data in superior agreement to classical approaches across all strain rates evaluated based on solely lamina-level properties. It was determined that using the determined m value with the Northwestern Failure Criteria provided an accurate prediction of material behavior regardless of fiber type for the identified material class, which significantly reduces the material characterization testing required for the typical building block approach used by industry for computational analysis validation.

Original languageEnglish (US)
Title of host publicationMechanics of Composite and Multi-functional Materials- Proceedings of the 2017 Annual Conference on Experimental and Applied Mechanics
EditorsRaman Singh, Raman Singh, Piyush R. Thakre, Geoff Slipher
PublisherSpringer New York LLC
Pages187-196
Number of pages10
ISBN (Print)9783319634074
DOIs
StatePublished - 2018
EventAnnual Conference and Exposition on Experimental and Applied Mechanics, 2017 - Indianapolis, United States
Duration: Jun 12 2017Jun 15 2017

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
Volume6
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Other

OtherAnnual Conference and Exposition on Experimental and Applied Mechanics, 2017
CountryUnited States
CityIndianapolis
Period6/12/176/15/17

Keywords

  • Composites
  • Failure
  • Northwestern Failure Theory
  • Strain Rate
  • Verification and Validation

ASJC Scopus subject areas

  • Engineering(all)
  • Computational Mechanics
  • Mechanical Engineering

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