Fatigue crack growth properties of carbon-polyamide 6 thermoplastic composites using a multi-ΔG control method
|Author(s)||Arhant Mael1, Lolive Eric2, Bonnemains Thomas2, Davies Peter1|
|Affiliation(s)||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
|Source||Engineering Fracture Mechanics (0013-7944) (Elsevier BV), 2021-07 , Vol. 252 , P. 107825 (14p.)|
|WOS© Times Cited||2|
|Keyword(s)||Thermoplastic composites, Mode I, Fatigue crack growth|
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.