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Damage based model to study the effect of notch introduction technique on the J-integral value of PolyOxyMethylene

Lucien Laiarinandrasana 1 Jonathan Ricard 1 Fabrice Guigné 2 Yin Cheng 3, 1 Thilo F. Morgeneyer 1 Lukas Helfen 4, 3
1 MAT - Centre des Matériaux
2 PSA Peugeot Citroën
3 ANKA - Institute for Photon Science and Synchrotron Radiation
4 ESRF - European Synchrotron Radiation Facility
Abstract : Experimental data on a CT specimen made of PolyOxyMethylene were enriched by in situ laminographic observations in 3D. The observed micro-mechanisms of crack initiation and growth have been simulated by using a damage based model. A critical value of J -integral was determined. The same model was utilized to simulate an initially heterogeneous porosity in the CT specimen to mimic the state of the material after a cutting process. A notch tip touching tool led to a less compliant specimen and a higher value of critical JcrJcr whereas non touching conditions, induced a damaged layer around the notch tip leading to a decrease in JcrJcr.
Keywords : Semi-crystalline polymers Tomography Laminography Finite element J-integral Local approach to fracture
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https://hal-mines-paristech.archives-ouvertes.fr/hal-01272301
Contributor : Bibliothèque Umr7633 <>
Submitted on : Wednesday, February 10, 2016 - 3:25:28 PM
Last modification on : Thursday, September 24, 2020 - 6:30:07 PM

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Lucien Laiarinandrasana, Jonathan Ricard, Fabrice Guigné, Yin Cheng, Thilo F. Morgeneyer, et al.. Damage based model to study the effect of notch introduction technique on the J-integral value of PolyOxyMethylene. Engineering Fracture Mechanics, Elsevier, 2015, 149, pp.214-229. ⟨10.1016/j.engfracmech.2015.08.031⟩. ⟨hal-01272301⟩

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