ISSN: 0884-6804
Page Count: 7

The Split Cantilever Beam Test for Characterizing Mode III Interlaminar Fracture Toughness
Lingg, C
Professor and graduate student, Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson Air Force Base, OH

Donaldson, SL
Materials research engineer, Materials Laboratory, Wright Research and Development Center, Wright-Patterson Air Force Base, OH

Mall, S
Professor and graduate student, Department of Aeronautics and Astronautics, Air Force Institute of Technology, Wright-Patterson Air Force Base, OH

Abstract

The paper extends the development of the split cantilever beam test specimen. The specimen is intended to measure the Mode III out-of-plane tearing interlaminar fracture toughness of composite materials. To help identify the effects of Mode I and Mode II in the specimen, the specimen end rotation, end opening, and adherend thickness are quantified experimentally. In addition, the crack-tip profile is determined using X-ray techniques, and the fracture morphology is identified as a function of location on the fracture surface.

Keywords:
composites, interlaminar fracture, delamination, Mode III, fractography, toughness

Paper ID: CTR10073J
DOI: 10.1520/CTR10073J
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