MULTIAXIAL INVESTIGATION OF PVC FOAMS AND ANALYSIS OF THE DEFORMATION MECHANISM BY 3D-DIC
Closed-cell polyvinylchloride (PVC) foams are widely used as core for sandwich composites for applications, in which multiaxial loads are involved. In the present work a wide range of uniaxial (tension, compression and torsion) and multiaxial experiments (both simultaneous tension-torsion and compre...
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| Format: | Article |
| Language: | English |
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Czech Technical University in Prague
2019-12-01
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| Series: | Acta Polytechnica CTU Proceedings |
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| Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/6011 |
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| author | Francesca Concas Stefan Diebels Anne Jung |
| author_facet | Francesca Concas Stefan Diebels Anne Jung |
| author_sort | Francesca Concas |
| collection | DOAJ |
| description | Closed-cell polyvinylchloride (PVC) foams are widely used as core for sandwich composites for applications, in which multiaxial loads are involved. In the present work a wide range of uniaxial (tension, compression and torsion) and multiaxial experiments (both simultaneous tension-torsion and compression-torsion) were conducted on a high performance PVC foam. Failure data for each experiment were collected and depicted in the invariants plane. The whole cylindrical surface of the specimen was monitored by means of an 8-camera-system, strain fields were obtained by 3D-DIC. Hence, the occurrence and the evolution of deformation bands were inspected. The usage of an 8-camera system was essential for the observation of the deformation mechanism, especially for pure compression, pure torsion and combined axial load-torsion, in which the arising of deformation bands is affected by the occurrence of buckling and the orthotropy of the foam. |
| format | Article |
| id | doaj-art-7a37e905ad124bfb9c59e109f4992086 |
| institution | Kabale University |
| issn | 2336-5382 |
| language | English |
| publishDate | 2019-12-01 |
| publisher | Czech Technical University in Prague |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj-art-7a37e905ad124bfb9c59e109f49920862025-08-20T03:33:49ZengCzech Technical University in PragueActa Polytechnica CTU Proceedings2336-53822019-12-0125061110.14311/APP.2019.25.00064761MULTIAXIAL INVESTIGATION OF PVC FOAMS AND ANALYSIS OF THE DEFORMATION MECHANISM BY 3D-DICFrancesca Concas0Stefan Diebels1Anne Jung2Saarland University, Institute of Applied Mechanics, Campus A4.2, 66123 Saarbrücken, GermanySaarland University, Institute of Applied Mechanics, Campus A4.2, 66123 Saarbrücken, GermanySaarland University, Institute of Applied Mechanics, Campus A4.2, 66123 Saarbrücken, GermanyClosed-cell polyvinylchloride (PVC) foams are widely used as core for sandwich composites for applications, in which multiaxial loads are involved. In the present work a wide range of uniaxial (tension, compression and torsion) and multiaxial experiments (both simultaneous tension-torsion and compression-torsion) were conducted on a high performance PVC foam. Failure data for each experiment were collected and depicted in the invariants plane. The whole cylindrical surface of the specimen was monitored by means of an 8-camera-system, strain fields were obtained by 3D-DIC. Hence, the occurrence and the evolution of deformation bands were inspected. The usage of an 8-camera system was essential for the observation of the deformation mechanism, especially for pure compression, pure torsion and combined axial load-torsion, in which the arising of deformation bands is affected by the occurrence of buckling and the orthotropy of the foam.https://ojs.cvut.cz/ojs/index.php/APP/article/view/6011polymeric foam, multiaxial testing, three-dimensional digital image correlation |
| spellingShingle | Francesca Concas Stefan Diebels Anne Jung MULTIAXIAL INVESTIGATION OF PVC FOAMS AND ANALYSIS OF THE DEFORMATION MECHANISM BY 3D-DIC Acta Polytechnica CTU Proceedings polymeric foam, multiaxial testing, three-dimensional digital image correlation |
| title | MULTIAXIAL INVESTIGATION OF PVC FOAMS AND ANALYSIS OF THE DEFORMATION MECHANISM BY 3D-DIC |
| title_full | MULTIAXIAL INVESTIGATION OF PVC FOAMS AND ANALYSIS OF THE DEFORMATION MECHANISM BY 3D-DIC |
| title_fullStr | MULTIAXIAL INVESTIGATION OF PVC FOAMS AND ANALYSIS OF THE DEFORMATION MECHANISM BY 3D-DIC |
| title_full_unstemmed | MULTIAXIAL INVESTIGATION OF PVC FOAMS AND ANALYSIS OF THE DEFORMATION MECHANISM BY 3D-DIC |
| title_short | MULTIAXIAL INVESTIGATION OF PVC FOAMS AND ANALYSIS OF THE DEFORMATION MECHANISM BY 3D-DIC |
| title_sort | multiaxial investigation of pvc foams and analysis of the deformation mechanism by 3d dic |
| topic | polymeric foam, multiaxial testing, three-dimensional digital image correlation |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/6011 |
| work_keys_str_mv | AT francescaconcas multiaxialinvestigationofpvcfoamsandanalysisofthedeformationmechanismby3ddic AT stefandiebels multiaxialinvestigationofpvcfoamsandanalysisofthedeformationmechanismby3ddic AT annejung multiaxialinvestigationofpvcfoamsandanalysisofthedeformationmechanismby3ddic |