On the mechanical properties and damage mechanisms of short fibers reinforced composite submitted to hydrothermal aging: Application to sheet molding compound composite
| Autor: | Hachmi Ben Daly, Sahbi Tamboura, Abbas Tcharkhtchi, Abir Abdessalem, Joseph Fitoussi |
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| Přispěvatelé: | Ecole Nationale d'Ingénieurs de Sousse (ENISo), Laboratoire d'Ingénierie des Fluides et des Systèmes Énergétiques (LIFSE), Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM) |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Materials science
Moisture Three point flexural test SMC composite Composite number General Engineering 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Sciences de l'ingénieur 01 natural sciences Durability 0104 chemical sciences Distilled water Hydrothermal aging Ultimate tensile strength Damage mechanisms [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] Sheet moulding compound General Materials Science Fiber Composite material 0210 nano-technology Mechnical properties In-situ microscopic tests |
| Zdroj: | Engineering Failure Analysis Engineering Failure Analysis, Elsevier, 2022, 131, pp.105806. ⟨10.1016/j.engfailanal.2021.105806⟩ |
| ISSN: | 1350-6307 |
| DOI: | 10.1016/j.engfailanal.2021.105806⟩ |
| Popis: | International audience; Sheet Molding compound (SMC) composites were subjected to water immersion tests in order to study their durability since such composites are of interest in automotive applications. Water sorption tests were conducted by immersing specimens in distilled water at 25-90°C for different time durations. In order to investigate the combined action of water and temperature over time on composite mechanical behavior, tensile tests and quasi-static loading were conducted. The mechanical properties of water immersed specimens were evaluated and compared alongside to dry composite behaviour. The tensile tests and quasi-static properties of the studied composite were found to decrease with the increase in moisture uptake. This decrease was attributed toinner structure dégradations by means of osmosis phenomenon. It was shown that hydrothermal aging affects mainly the fiber/matrix interfacial zone while a good adhesion between the reinforcement and the matrix was observed for the virgin samples. In order to well understand the damage mechanisms, scanning electron microspy (in-situ three point bending) tests were performed on aged and non aged specimens. Damage mechanisms were identified for different material states. Results display clearly that damage evolution always begins at the interface regions. Furthermore, a quantitave analysis was performed at a local scale in a representative zone of the tensile area. |
| Databáze: | OpenAIRE |
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