Cyclic-fatigue crack growth in polymer composites: data interpretation via the Hartman-Schijve methodology
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Published version
Author(s)
Michel, Silvain
Kinloch, Anthony J
Jones, Rhys
Type
Journal Article
Abstract
The European Structural Integrity Society (ESIS), Technical Committee 4 (TC4), has initiated a
Round-Robin program on the Mode I delamination growth in a continuous carbon-fibre reinforced-plastic (CFRP) composite under fatigue loading, using Mode I double-cantilever (DCB)
tests. The present paper shows that the Hartman-Schijve equation, determined with test data
generated under R = 0.1, can be used to compute the fatigue crack growth (FCG) associated with
tests performed at R = 0.3, 0.5 and 0.7, where R is the load ratio (=Pmin/Pmax). Most importantly,
the Hartman-Schijve methodology may be used to determine a worst-case upper-bound da/dN
versus Δ ̅̅̅
G
√ FCG curve for small naturally-occurring delaminations in the CFRP.
Round-Robin program on the Mode I delamination growth in a continuous carbon-fibre reinforced-plastic (CFRP) composite under fatigue loading, using Mode I double-cantilever (DCB)
tests. The present paper shows that the Hartman-Schijve equation, determined with test data
generated under R = 0.1, can be used to compute the fatigue crack growth (FCG) associated with
tests performed at R = 0.3, 0.5 and 0.7, where R is the load ratio (=Pmin/Pmax). Most importantly,
the Hartman-Schijve methodology may be used to determine a worst-case upper-bound da/dN
versus Δ ̅̅̅
G
√ FCG curve for small naturally-occurring delaminations in the CFRP.
Date Issued
2025-02-07
Date Acceptance
2024-12-13
Citation
Engineering Fracture Mechanics, 2025, 314
ISSN
0013-7944
Publisher
Elsevier BV
Journal / Book Title
Engineering Fracture Mechanics
Volume
314
Copyright Statement
© 2024 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license
(http://creativecommons.org/licenses/by/4.0/).
(http://creativecommons.org/licenses/by/4.0/).
License URL
Identifier
https://doi.org/10.1016/j.engfracmech.2024.110743
Publication Status
Published
Article Number
110743
Date Publish Online
2024-12-15