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An investigation on the influence of loading rate on the fracture toughness of UHMW-PE composites

Paper presented at the 17th European Conference on Composite Materials, ECCM 2016, 26-30th June 2016, Munich, Germany
: May, Michael; Lässig, Torsten; Hiermaier, Stefan

Volltext urn:nbn:de:0011-n-4353863 (437 KByte PDF)
MD5 Fingerprint: dd93e3b743082b9d74d426857fdc3f49
Erstellt am: 22.2.2017

2016, 8 S.
European Conference on Composite Materials (ECCM) <17, 2016, Munich>
Vortrag, Elektronische Publikation
Fraunhofer EMI ()
fracture toughness; mechanical testing; computational modeling; strain rate

Ultra-high molecular weight polyethylene composites are frequently used in ballistic impact applications. For predictive modeling of impact scenarios it is important to consider potential effects of loading rate on the mechanical properties of the composite – especially the fracture toughness. In this article, the influence of loading rate on the mode I fracture toughness of Dyneema® HB26 is studied. It was found that the fracture toughness increases with increasing loading rate. A material model for cohesive interface elements is proposed which includes both, the rate dependency of the mode I fracture toughness and the rate dependency of the out-of-plane tensile strength. The model is implemented into ABAQUS/Explicit and verified against the experimental evidence.