A shear-torsion-bending test for mixed-mode I-II-III delamination toughness determination

Barry D Davidson, F. O. Sediles, K. D. Humphreys

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

7 Scopus citations

Abstract

A recently introduced shear-torsion-bending (STB) test is described. This test allows for delamination toughness testing under any ratio of mode I, II and III loading. STB test specimens are similar to those that are used for existing mode I, II and mixed-mode I-II test methods. For pure mode III loading, three-dimensional finite element analyses are used to show that the distributions of energy release rates across the delamination front are highly uniform and significantly better than those obtained with other mode III test methods. A closed-form data reduction method is also presented that is verified by comparison with finite element results for a wide range of material and geometric properties. Use of the STB is illustrated by mode III delamination toughness testing on two different graphite/epoxy materials.

Original languageEnglish (US)
Title of host publication25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010
Pages1001-1020
Number of pages20
Volume2
StatePublished - 2010
Event25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010 - Dayton, OH, United States
Duration: Sep 20 2010Sep 22 2010

Other

Other25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010
CountryUnited States
CityDayton, OH
Period9/20/109/22/10

    Fingerprint

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Davidson, B. D., Sediles, F. O., & Humphreys, K. D. (2010). A shear-torsion-bending test for mixed-mode I-II-III delamination toughness determination. In 25th Technical Conference of the American Society for Composites and 14th US-Japan Conference on Composite Materials 2010 (Vol. 2, pp. 1001-1020)