1 Please note that this is an author-produced PDF of an article accepted for publication following peer review. The definitive publisher-authenticated version is available on the publisher Web site. Engineering Fracture Mechanics July 2021, Volume 252 Pages 107825 (14p.) https://doi.org/10.1016/j.engfracmech.2021.107825 https://archimer.ifremer.fr/doc/00700/81173/ Archimer https://archimer.ifremer.fr Fatigue crack growth properties of carbon-polyamide 6 thermoplastic composites using a multi-ΔG control method Arhant Mael 1, * , Lolive Eric 2 , Bonnemains Thomas 2 , Davies Peter 1 1 IFREMER, Marine Structures Laboratory, Centre de Bretagne, Plouzané, France 2 Institut de Recherche Dupuy de Lôme (IRDL - UMR CNRS 6027), Université de Bretagne Occidentale [UBO], France * Corresponding author : Mael Arhant, email address : [email protected] Abstract : The present paper presents a new multi-ΔG control approach to perform mode I fatigue crack growth tests using several constant cyclic energy release rate ranges (ΔG) on only one specimen. It was successfully applied on carbon/polyamide 6 unidirectional composite specimens. After validation checks on the approach, results show that the crack propagation behaviour exhibits three different crack propagation regimes that can be accurately described using the Hartman-Shijves equation. This work has shown that the multi-ΔG control method can provide reliable crack growth propagation results and a complete ΔG versus cycles description. Highlights ► A new multi-ΔG control approach to perform mode I fatigue crack growth under constant ΔG is presented. ► The crack propagation behaviour can be accurately described using the Hartman-Shijves equation. ► First results concerning the fatigue crack growth behaviour of C/PA6 composites are presented. Keywords : Thermoplastic composites, Mode I, Fatigue crack growth
Fatigue crack growth properties of carbon-polyamide 6 thermoplastic composites using a multi-ΔG control method
May 20, 2023
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