Fatigue mechanisms of a closed cell elastomeric foam: A mechanical and microstructural study using ex situ X-ray microtomography
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...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-11-01
|
| Series: | Polymer Testing |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S014294182300274X |
| _version_ | 1827816154541850624 |
|---|---|
| author | C. Aimar L. Orgéas S. Rolland du Roscoat L. Bailly D. Ferré Sentis |
| author_facet | C. Aimar L. Orgéas S. Rolland du Roscoat L. Bailly D. Ferré Sentis |
| author_sort | C. Aimar |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-12T00:11:45Z |
| format | Article |
| id | doaj.art-0db97c594bca459da0d22622ba7b2cf4 |
| institution | Directory Open Access Journal |
| issn | 0142-9418 |
| language | English |
| last_indexed | 2024-03-12T00:11:45Z |
| publishDate | 2023-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Polymer Testing |
| spelling | doaj.art-0db97c594bca459da0d22622ba7b2cf42023-09-16T05:28:08ZengElsevierPolymer Testing0142-94182023-11-01128108194Fatigue mechanisms of a closed cell elastomeric foam: A mechanical and microstructural study using ex situ X-ray microtomographyC. Aimar0L. Orgéas1S. Rolland du Roscoat2L. Bailly3D. Ferré Sentis4Univ. Grenoble Alpes, CNRS, Grenoble INP, 3SR Lab, Grenoble, 38000, France; Decathlon SA - Footwear International Division, Wattrelos, 59150, FranceUniv. Grenoble Alpes, CNRS, Grenoble INP, 3SR Lab, Grenoble, 38000, France; Corresponding author.Univ. Grenoble Alpes, CNRS, Grenoble INP, 3SR Lab, Grenoble, 38000, FranceUniv. Grenoble Alpes, CNRS, Grenoble INP, 3SR Lab, Grenoble, 38000, FranceDecathlon SA - Footwear International Division, Wattrelos, 59150, FranceThe 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.http://www.sciencedirect.com/science/article/pii/S014294182300274XClosed cell elastomeric foamsFatigueCompression testDamage mechanismsX-ray microtomographyMemory effects |
| spellingShingle | C. Aimar L. Orgéas S. Rolland du Roscoat L. Bailly D. Ferré Sentis Fatigue mechanisms of a closed cell elastomeric foam: A mechanical and microstructural study using ex situ X-ray microtomography Polymer Testing Closed cell elastomeric foams Fatigue Compression test Damage mechanisms X-ray microtomography Memory effects |
| title | Fatigue mechanisms of a closed cell elastomeric foam: A mechanical and microstructural study using ex situ X-ray microtomography |
| title_full | Fatigue mechanisms of a closed cell elastomeric foam: A mechanical and microstructural study using ex situ X-ray microtomography |
| title_fullStr | Fatigue mechanisms of a closed cell elastomeric foam: A mechanical and microstructural study using ex situ X-ray microtomography |
| title_full_unstemmed | Fatigue mechanisms of a closed cell elastomeric foam: A mechanical and microstructural study using ex situ X-ray microtomography |
| title_short | Fatigue mechanisms of a closed cell elastomeric foam: A mechanical and microstructural study using ex situ X-ray microtomography |
| title_sort | fatigue mechanisms of a closed cell elastomeric foam a mechanical and microstructural study using ex situ x ray microtomography |
| topic | Closed cell elastomeric foams Fatigue Compression test Damage mechanisms X-ray microtomography Memory effects |
| url | http://www.sciencedirect.com/science/article/pii/S014294182300274X |
| work_keys_str_mv | AT caimar fatiguemechanismsofaclosedcellelastomericfoamamechanicalandmicrostructuralstudyusingexsituxraymicrotomography AT lorgeas fatiguemechanismsofaclosedcellelastomericfoamamechanicalandmicrostructuralstudyusingexsituxraymicrotomography AT srollandduroscoat fatiguemechanismsofaclosedcellelastomericfoamamechanicalandmicrostructuralstudyusingexsituxraymicrotomography AT lbailly fatiguemechanismsofaclosedcellelastomericfoamamechanicalandmicrostructuralstudyusingexsituxraymicrotomography AT dferresentis fatiguemechanismsofaclosedcellelastomericfoamamechanicalandmicrostructuralstudyusingexsituxraymicrotomography |