Experimental evaluation of the degradation of bio-based composites under extreme conditions: Impact on mechanical performance and durability
This paper characterizes the impact of long-term cyclic hygrothermal aging behavior on mechanical properties of bio-based balsa core sandwich structures through experimental investigation of moisture diffusion cycles, moisture-induced swelling effects, degradation of bending strength and stiffness,...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2025-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2025/11/epjconf_cofmer2025_03003.pdf |
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| author | Wu Yuan Fajoui Jamal Casari Pascal Fréour Sylvain Bouziane Mouna |
| author_facet | Wu Yuan Fajoui Jamal Casari Pascal Fréour Sylvain Bouziane Mouna |
| author_sort | Wu Yuan |
| collection | DOAJ |
| description | This paper characterizes the impact of long-term cyclic hygrothermal aging behavior on mechanical properties of bio-based balsa core sandwich structures through experimental investigation of moisture diffusion cycles, moisture-induced swelling effects, degradation of bending strength and stiffness, as well as the damage modes initiated in skins, skin/core interfaces and the balsa core. The structural strength and stiffness were found to be retained at 90% of the initial state after two complete moisture absorption-desorption cycles, indicating that the elastic properties of the balsa core sandwich structure can be rapidly recovered within a 7-day desorption process. Moreover, it was demonstrated that damage mechanisms including balsa wood core shear cracks and glass fiber breakage in skins would propagate more easily due to the long-term hygroscopic aging. These findings are crucial for the development of bio-based plant fiber reinforced composite structures applied in offshore wind turbines and maritime industry to reduce their carbon footprint and contribute to a circular economy. |
| format | Article |
| id | doaj-art-10161c01291f44cc9e893ca8c548dd40 |
| institution | OA Journals |
| issn | 2100-014X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj-art-10161c01291f44cc9e893ca8c548dd402025-08-20T01:53:06ZengEDP SciencesEPJ Web of Conferences2100-014X2025-01-013260300310.1051/epjconf/202532603003epjconf_cofmer2025_03003Experimental evaluation of the degradation of bio-based composites under extreme conditions: Impact on mechanical performance and durabilityWu Yuan0Fajoui Jamal1Casari Pascal2Fréour Sylvain3Bouziane Mouna4Nantes Université, Ecole Centrale Nantes, CNRS, GeMNantes Université, Ecole Centrale Nantes, CNRS, GeMNantes Université, Ecole Centrale Nantes, CNRS, GeMNantes Université, Ecole Centrale Nantes, CNRS, GeMNantes Université, Ecole Centrale Nantes, CNRS, GeMThis paper characterizes the impact of long-term cyclic hygrothermal aging behavior on mechanical properties of bio-based balsa core sandwich structures through experimental investigation of moisture diffusion cycles, moisture-induced swelling effects, degradation of bending strength and stiffness, as well as the damage modes initiated in skins, skin/core interfaces and the balsa core. The structural strength and stiffness were found to be retained at 90% of the initial state after two complete moisture absorption-desorption cycles, indicating that the elastic properties of the balsa core sandwich structure can be rapidly recovered within a 7-day desorption process. Moreover, it was demonstrated that damage mechanisms including balsa wood core shear cracks and glass fiber breakage in skins would propagate more easily due to the long-term hygroscopic aging. These findings are crucial for the development of bio-based plant fiber reinforced composite structures applied in offshore wind turbines and maritime industry to reduce their carbon footprint and contribute to a circular economy.https://www.epj-conferences.org/articles/epjconf/pdf/2025/11/epjconf_cofmer2025_03003.pdf |
| spellingShingle | Wu Yuan Fajoui Jamal Casari Pascal Fréour Sylvain Bouziane Mouna Experimental evaluation of the degradation of bio-based composites under extreme conditions: Impact on mechanical performance and durability EPJ Web of Conferences |
| title | Experimental evaluation of the degradation of bio-based composites under extreme conditions: Impact on mechanical performance and durability |
| title_full | Experimental evaluation of the degradation of bio-based composites under extreme conditions: Impact on mechanical performance and durability |
| title_fullStr | Experimental evaluation of the degradation of bio-based composites under extreme conditions: Impact on mechanical performance and durability |
| title_full_unstemmed | Experimental evaluation of the degradation of bio-based composites under extreme conditions: Impact on mechanical performance and durability |
| title_short | Experimental evaluation of the degradation of bio-based composites under extreme conditions: Impact on mechanical performance and durability |
| title_sort | experimental evaluation of the degradation of bio based composites under extreme conditions impact on mechanical performance and durability |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2025/11/epjconf_cofmer2025_03003.pdf |
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