Abstract
The effects of loading rate on interlaminar fracture toughness were investigated for two graphite/epoxy materials, one with a brittle matrix and the other with a toughened one. Mode I delamination fracture toughness was studied by means of uniform-width, width-tapered, and height-tapered double cantilever beam specimens. The specimens were loaded at various cross head rates corresponding to crack extension rates up to 26 m/s. It was found that for the brittle-matrix composite the energy release rate increases up to a certain crack velocity and thereafter it decreases. In the case of the toughened-matrix composite the energy release rate decreases monotonically with increasing crack velocity.
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References
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© 1987 Elsevier Applied Science Publishers Ltd
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Daniel, I.M., Yaniv, G., Auser, J.W. (1987). Rate Effects on Delamination Fracture Toughness of Graphite/Epoxy Composites. In: Marshall, I.H. (eds) Composite Structures 4. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3457-3_20
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DOI: https://doi.org/10.1007/978-94-009-3457-3_20
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-8048-4
Online ISBN: 978-94-009-3457-3
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