Fatigue Crack Propagation under Mixed Mode I and III in\nPolyoxymethelene Homopolymer

0518218 - ÚFM 2024 RIV CH eng C - Conference Paper (international conference)
Slávik, Ondrej - Hutař, Pavel - Gosch, A. - Berer, M. - Vojtek, Tomáš - Arbeiter, F. - Pinter, G. - Náhlík, Luboš
Fatigue Crack Propagation under Mixed Mode I and III in
Polyoxymethelene Homopolymer.
Advances in Fracture and Damage Mechanics XVIII. Zurrich: Trans Tech Publications, 2020 - (Paipetis, S.; Aliabadi, F.), s. 404-409. Key Engineering Materials, 827. ISBN 978-3-0357-1586-6. ISSN 1013-9826.
[FDM 2019 International Conference on Fracture and Damage Mechanics /18./. Rhodos (GR), 16.09.2019-18.09.2019]
R&D Projects: GA MŠMT(CZ) EF16_013/0001823
Institutional support: RVO:68081723
Keywords : Mixed-mode fatigue crack * Polyoxymethelene, * CRB test * Lifetime prediction
OECD category: Mechanical engineering

While mixed-mode loading conditions became hot topic recently, it is still quite
unexplored area, even in case of metals. In case of polymers, this is even more complex problem,
thanks to their higher sensitivity on higher temperatures connected with friction. Since polymer
materials are very popular, this topic is of high interest. One of the best experimental specimens for
achieving mixed mode loading conditions is the CRB specimen, as it provides clear mixed-mode I +
III conditions under tension + torsion. Furthermore, for lifetime predictions it is necessary to calculate
some material constants based on measured crack growth rates. However, these crack growth rates
are not as easily and accurately measured on CRB specimens, as on CT specimens. Therefore, the
main focus of this study is to observe difference between lifetime predictions based on CT and CRB
data and possible application of CT data for CRB specimens.
Permanent Link: http://hdl.handle.net/11104/0311436