Heat source and voiding signatures of Mullins damage in filled EPDM
| Autor: | Jean-Luc Bouvard, Guillaume Corvec, Noëlle Billon, Oguzhan Oguz, Christophe Pradille, Edith Peuvrel-Disdier, Nicolas Candau, Maria Lluisa Maspoch |
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| Přispěvatelé: | Centre Català del Plàstic (CCP), Universitat Politècnica de Catalunya Barcelona Tech (EEBE-UPC), Ecole Polytech Fed Lausanne, EPFL STI IMX LMOM, Inst Mat, Lab Macromol & Organ Mat,Stn 12, CH-1015 Lausanne, Switzerland, Centre de Mise en Forme des Matériaux (CEMEF), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Mat Xper, Universitat Politècnica de Catalunya. Departament de Ciència i Enginyeria de Materials, Universitat Politècnica de Catalunya. e-PLASCOM - Plàstics i Compòsits Ecològics |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Digital image correlation
mechanical-behavior Materials science Polymers and Plastics Polymers Nucleation strain-induced crystallization 02 engineering and technology 010402 general chemistry Enginyeria dels materials [Àrees temàtiques de la UPC] 01 natural sciences composites Natural rubber [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] Rubber damage Composite material rubber damage Softening ComputingMilieux_MISCELLANEOUS density natural rubbers Strain (chemistry) Organic Chemistry self-heating deformation temperature dependence 021001 nanoscience & nanotechnology 0104 chemical sciences Polímers Filled EPDM Self-heating kinetics visual_art Cavitation Tangent modulus filled epdm visual_art.visual_art_medium fatigue Deformation (engineering) 0210 nano-technology |
| Zdroj: | Polymer Testing Polymer Testing, Elsevier, 2020, 91, pp.106838. ⟨10.1016/j.polymertesting.2020.106838⟩ UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| ISSN: | 0142-9418 |
| DOI: | 10.1016/j.polymertesting.2020.106838⟩ |
| Popis: | The thermomechanical coupling of Mullins damage in filled EPDM has been investigated by analysing the self-heating via Infrared thermography (IR) and the voiding fraction by Digital Image Correlation (DIC). The volumetric strain measured during the rubber deformation is found to be predominantly associated with damage, while thermal dilatation caused by self-heating has a negligible contribution. On this basis, the thermomechanical coupling of Mullins phenomena has been identified by evaluating the strain and time dependence of the following criteria: the tangent modulus, the voiding rate and the heat sources. The tangent modulus that reaches a maximum at the strain transition from a series of cycle to another is found to be an appropriate mechanical signature of Mullin softening. At the same strain transition, both voiding rate upturn and heat source upturn are observed. These signatures suggest the Mullins damage to be mainly associated at high strain rate with the (re)-activation of dissipative cavitation mechanisms, by nucleation of new cavities and/or acceleration of cavities growth. |
| Databáze: | OpenAIRE |
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