On the fatigue response of bridging ductile fibers in an MoSi2 intermetallic composite
On the fatigue response of bridging ductile fibers in an MoSi2 intermetallic composite
The fatigue response of bridging molybdenum fibers in an MoSi2 matrix has been investigated. The composite consists of a MoSi2-40% SiC matrix reinforced with alumina coated Mo fibers. Previous work demonstrated that the ductility and interfacial debonding of coated Mo fibers promoted high monotonic fracture resistance based on a bridging mechanism. The current study shows that debonding ductile fibers have also the potential to give adequate fatigue crack growth resistance. A tensile test was devised to measure the opening of a bridged crack as a function of number of cycles. The results suggest that if the applied stress is below a threshold stress governed by the flow stress of the ductile fibers, then the crack opening remains constant after a large number of cycles. This information can be used, in principle, to predict the crack growth rate in composites.
209-214
Dève, H.E.
68c6a827-9d17-4c91-860b-6504763b4871
Spearing, S.M.
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Maloney, M.J.
fe214b57-26df-4e7a-981f-da1059bc72a3
1993
Dève, H.E.
68c6a827-9d17-4c91-860b-6504763b4871
Spearing, S.M.
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Maloney, M.J.
fe214b57-26df-4e7a-981f-da1059bc72a3
Dève, H.E., Spearing, S.M. and Maloney, M.J.
(1993)
On the fatigue response of bridging ductile fibers in an MoSi2 intermetallic composite.
Materials Science and Engineering: A, 160 (2), .
(doi:10.1016/0921-5093(93)90449-O).
Abstract
The fatigue response of bridging molybdenum fibers in an MoSi2 matrix has been investigated. The composite consists of a MoSi2-40% SiC matrix reinforced with alumina coated Mo fibers. Previous work demonstrated that the ductility and interfacial debonding of coated Mo fibers promoted high monotonic fracture resistance based on a bridging mechanism. The current study shows that debonding ductile fibers have also the potential to give adequate fatigue crack growth resistance. A tensile test was devised to measure the opening of a bridged crack as a function of number of cycles. The results suggest that if the applied stress is below a threshold stress governed by the flow stress of the ductile fibers, then the crack opening remains constant after a large number of cycles. This information can be used, in principle, to predict the crack growth rate in composites.
This record has no associated files available for download.
More information
Published date: 1993
Organisations:
Engineering Sciences
Identifiers
Local EPrints ID: 22771
URI: http://eprints.soton.ac.uk/id/eprint/22771
ISSN: 0921-5093
PURE UUID: b0c07bfd-bc45-4e8e-81e2-e45bd12cc27f
Catalogue record
Date deposited: 30 Jan 2007
Last modified: 16 Mar 2024 03:37
Export record
Altmetrics
Contributors
Author:
H.E. Dève
Author:
M.J. Maloney
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
