| Autor: |
C. Aimar, L. Orgéas, S. Rolland du Roscoat, L. Bailly, D. Ferré Sentis |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Polymer Testing, Vol 128, Iss , Pp 108194- (2023) |
| Druh dokumentu: |
article |
| ISSN: |
0142-9418 |
| DOI: |
10.1016/j.polymertesting.2023.108194 |
| Popis: |
The degradation of mechanical properties of closed-cell elastomeric foams in fatigue and its link with the cellular structure is still poorly understood. To clarify this, we performed interrupted and continuous cyclic compression tests on EVA closed-cell foams used in running shoes. The 3D cellular structures of tested samples was analyzed before, during and after fatigue tests using X-ray microtomography and digital volume correlation. Interrupting the cycling allows the observation of the cell flattening along the compression axis with both plastic bending and an increase of tears/holes of cell walls. These two fatigue-induced defects are suspected to play a strong contribution on the fatigue properties of the foam at the sample scale and may explain the partial recovery of the initial mechanical property of foams while restarting cycling. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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Full Text from ScienceDirect