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Modeling of facesheet crack growth in titanium-graphite hybrid laminates. Part II: experimental results

Burianek, D.A. and Spearing, S.M. (2003) Modeling of facesheet crack growth in titanium-graphite hybrid laminates. Part II: experimental results Engineering Fracture Mechanics, 70, (6), pp. 799-812. (doi:10.1016/S0013-7944(02)00087-5).

Record type: Article


Titanium–graphite hybrid composite laminates exhibit a coupled damage growth mode of facesheet cracking and delamination. Part I of this work modeled the growth of the coupled damage mode. Fatigue experiments were conducted on single edge notch tension specimens to measure the crack growth rate. This paper compares the model predictions with experimental data. The three-dimensional finite element model successfully captured the damage growth behavior for two of the lay-ups ([Ti/0/90/02]s and [Ti/90/0/902]s) in the experimental program. However, in a third lay-up, [Ti/0/90/±30]s, the underlying damage modes were found to be sufficiently different than the other two lay-ups and the model did not capture the steady-state growth behavior. The effects of temperature and specimen size were also investigated for TiGr laminates. Except for the effects of the load ratio, elevated temperatures did not affect the crack growth rate significantly. For wider specimens, the steady-state fatigue crack growth behavior was similar to the narrow specimens, indicating that the steady-state facesheet crack growth behavior is independent of specimen size.

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Published date: 2003
Keywords: hybrid laminates, fatigue crack growth, crack bridging, virtual crack closure, TiGr


Local EPrints ID: 22829
ISSN: 0013-7944
PURE UUID: 737a0e7a-6db6-4c00-98ce-5ddcc8044996

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Date deposited: 10 Mar 2006
Last modified: 17 Jul 2017 16:20

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Author: D.A. Burianek
Author: S.M. Spearing

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