Abstract
The aim of the tests was to determine the relations between the fibre system orientation and fracture behaviour of brittle matrix composites reinforced with steel fibres.
An optimization problem was previously solved analytically in which the orientation angle of a parallel fibres system was determined from the condition of maximum fracture energy for a given cracking limit state. In the solution a system of approximate relations was proposed.
To verify the theoretical results a few series of tests have been executed on Portland cement concrete specimens with fibres (chopped and continuous) oriented at various angles. The results of measurements and observations confirmed theoretically determined relations between the angle of fibres orientation and the fracture energy.
The tests presented here have been executed to determine the influence of the fibre orientation on the crack propagation. Notched concrete specimens were subjected to bending and the crack propagation from the notch was closely observed and recorded. The results of the tests are presented in the form of fracture characteristics as functions of the fibre orientation and volume content.
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© 1991 Elsevier Science Publishers Ltd
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Brandt, A.M. (1991). Influence of Fibre Orientation on the Cracking and Fracture Energy in Brittle Matrix Composites. In: Vautrin, A., Sol, H. (eds) Mechanical Identification of Composites. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3658-7_37
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DOI: https://doi.org/10.1007/978-94-011-3658-7_37
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-85166-694-2
Online ISBN: 978-94-011-3658-7
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