Abstract
Reversed bending fatigue studies have been performed on boron-aluminium and carbon-aluminium fibre composites. The superior fatigue resistance of the boron composites arises partly from the use of an alloy matrix, but mainly from the more advanced development stage attained in the manufacture of the boron composite. (The carbon-aluminium composites contained many broken fibres and relatively weakly-bonded interfaces which provided easy paths for the propagation of fatigue cracks.)
Although matrix fatigue is the primary type of fatigue damage sustained by these composites, some evidence was found for induced fibre failure in boron-aluminium composites under high stress/low cycle conditions.
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Baker, A.A., Braddick, D.M. & Jackson, P.W. Fatigue of boron-aluminium and carbon-aluminium fibre composites. J Mater Sci 7, 747–762 (1972). https://doi.org/10.1007/BF00549903
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DOI: https://doi.org/10.1007/BF00549903