Durability of fiber composites - the case for mechanism-based models
Durability of fiber composites - the case for mechanism-based models
Long-duration durability (particularly fatigue) testing of composites is time consuming and expensive. There is, therefore, a stronger incentive to reduce reliance on such testing than in other areas of design. Mechanism-based models offer the potential to reduce the reliance on test programs. Such models have been derived for several fatigue damage mechanisms, notably: delamination, fiber-bridged cracking, and off-axis ply cracking. There has been less success at modeling fatigue processes at higher levels, such as at notches. Examples of existing models are presented from the literature, and their capabilities and deficiencies are discussed in the context of improving the processes of materials selection and design for durability. Key principles are advocated, including modeling damage propagation utilizing Paris-type expressions, the importance of length scales in modeling fatigue processes, and the need to improve the capability to model multiple, interacting, damage processes
composite damage, composites, composites fatigue, durability, fatigue crack growth, mechanism-based models, notch tip damage
177-186
Spearing, S.M.
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
2000
Spearing, S.M.
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Spearing, S.M.
(2000)
Durability of fiber composites - the case for mechanism-based models.
Journal of Composites Technology and Research, 22 (4), .
Abstract
Long-duration durability (particularly fatigue) testing of composites is time consuming and expensive. There is, therefore, a stronger incentive to reduce reliance on such testing than in other areas of design. Mechanism-based models offer the potential to reduce the reliance on test programs. Such models have been derived for several fatigue damage mechanisms, notably: delamination, fiber-bridged cracking, and off-axis ply cracking. There has been less success at modeling fatigue processes at higher levels, such as at notches. Examples of existing models are presented from the literature, and their capabilities and deficiencies are discussed in the context of improving the processes of materials selection and design for durability. Key principles are advocated, including modeling damage propagation utilizing Paris-type expressions, the importance of length scales in modeling fatigue processes, and the need to improve the capability to model multiple, interacting, damage processes
This record has no associated files available for download.
More information
Published date: 2000
Additional Information:
Paper ID: CTR2240177
Keywords:
composite damage, composites, composites fatigue, durability, fatigue crack growth, mechanism-based models, notch tip damage
Identifiers
Local EPrints ID: 22768
URI: http://eprints.soton.ac.uk/id/eprint/22768
ISSN: 0884-6804
PURE UUID: ec2c88ba-b4a6-4e9c-97f7-922572bd5272
Catalogue record
Date deposited: 08 Feb 2007
Last modified: 09 Jan 2022 03:15
Export record
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
