Mechanical performance of unstitched and silk fiber-stitched woven kenaf fiber reinforced epoxy composites
Fiber composites are known to have poor through-thickness mechanical properties due to the absence of a Z-direction binder. This issue is more critical with the use of natural fibers due to their low strength compared to synthetic fibers. Stitching is a through-thickness toughening method that is us...
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| 格式: | 文件 |
| 语言: | English |
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Multidisciplinary Digital Publishing Institute
2020
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| 在线阅读: | http://psasir.upm.edu.my/id/eprint/86697/1/Mechanical%20performance%20.pdf |
| _version_ | 1825952247840768000 |
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| author | Kirmasha, Yasir Khaleel Sharba, Mohaiman Jaffar Leman, Zulkiflle Hameed Sultan, Mohamed Thariq |
| author_facet | Kirmasha, Yasir Khaleel Sharba, Mohaiman Jaffar Leman, Zulkiflle Hameed Sultan, Mohamed Thariq |
| author_sort | Kirmasha, Yasir Khaleel |
| collection | UPM |
| description | Fiber composites are known to have poor through-thickness mechanical properties due to the absence of a Z-direction binder. This issue is more critical with the use of natural fibers due to their low strength compared to synthetic fibers. Stitching is a through-thickness toughening method that is used to introduce fibers in the Z-direction, which will result in better through-thickness mechanical properties. This research was carried out to determine the mechanical properties of unstitched and silk fiber-stitched woven kenaf-reinforced epoxy composites. The woven kenaf mat was stitched with silk fiber using a commercial sewing machine. The specimens were fabricated using a hand lay-up method. Three specimens were fabricated, one unstitched and two silk-stitched with deferent stitching orientations. The results show that the stitched specimens have comparable in-plane mechanical properties to the unstitched specimens. For the tensile mechanical test, stitched specimens show similar and 17.1% higher tensile strength compared to the unstitched specimens. The flexural mechanical test results show around a 9% decrease in the flexural strength for the stitched specimens. On the other hand, the Izod impact mechanical test results show a significant improvement of 33% for the stitched specimens, which means that stitching has successfully improved the out-of-plane mechanical properties. The outcome of this research indicates that the stitched specimens have better mechanical performance compared to the unstitched specimens and that the decrease in the flexural strength is insignificant in contrast with the remarkable enhancement in the impact strength. |
| first_indexed | 2024-03-06T10:42:05Z |
| format | Article |
| id | upm.eprints-86697 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T10:42:05Z |
| publishDate | 2020 |
| publisher | Multidisciplinary Digital Publishing Institute |
| record_format | dspace |
| spelling | upm.eprints-866972021-11-05T03:13:36Z http://psasir.upm.edu.my/id/eprint/86697/ Mechanical performance of unstitched and silk fiber-stitched woven kenaf fiber reinforced epoxy composites Kirmasha, Yasir Khaleel Sharba, Mohaiman Jaffar Leman, Zulkiflle Hameed Sultan, Mohamed Thariq Fiber composites are known to have poor through-thickness mechanical properties due to the absence of a Z-direction binder. This issue is more critical with the use of natural fibers due to their low strength compared to synthetic fibers. Stitching is a through-thickness toughening method that is used to introduce fibers in the Z-direction, which will result in better through-thickness mechanical properties. This research was carried out to determine the mechanical properties of unstitched and silk fiber-stitched woven kenaf-reinforced epoxy composites. The woven kenaf mat was stitched with silk fiber using a commercial sewing machine. The specimens were fabricated using a hand lay-up method. Three specimens were fabricated, one unstitched and two silk-stitched with deferent stitching orientations. The results show that the stitched specimens have comparable in-plane mechanical properties to the unstitched specimens. For the tensile mechanical test, stitched specimens show similar and 17.1% higher tensile strength compared to the unstitched specimens. The flexural mechanical test results show around a 9% decrease in the flexural strength for the stitched specimens. On the other hand, the Izod impact mechanical test results show a significant improvement of 33% for the stitched specimens, which means that stitching has successfully improved the out-of-plane mechanical properties. The outcome of this research indicates that the stitched specimens have better mechanical performance compared to the unstitched specimens and that the decrease in the flexural strength is insignificant in contrast with the remarkable enhancement in the impact strength. Multidisciplinary Digital Publishing Institute 2020-10-28 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/86697/1/Mechanical%20performance%20.pdf Kirmasha, Yasir Khaleel and Sharba, Mohaiman Jaffar and Leman, Zulkiflle and Hameed Sultan, Mohamed Thariq (2020) Mechanical performance of unstitched and silk fiber-stitched woven kenaf fiber reinforced epoxy composites. Materials, 13 (21). pp. 1-14. ISSN 1996-1944 https://www.mdpi.com/1996-1944/13/21/4801 10.3390/ma13214801 |
| spellingShingle | Kirmasha, Yasir Khaleel Sharba, Mohaiman Jaffar Leman, Zulkiflle Hameed Sultan, Mohamed Thariq Mechanical performance of unstitched and silk fiber-stitched woven kenaf fiber reinforced epoxy composites |
| title | Mechanical performance of unstitched and silk fiber-stitched woven kenaf fiber reinforced epoxy composites |
| title_full | Mechanical performance of unstitched and silk fiber-stitched woven kenaf fiber reinforced epoxy composites |
| title_fullStr | Mechanical performance of unstitched and silk fiber-stitched woven kenaf fiber reinforced epoxy composites |
| title_full_unstemmed | Mechanical performance of unstitched and silk fiber-stitched woven kenaf fiber reinforced epoxy composites |
| title_short | Mechanical performance of unstitched and silk fiber-stitched woven kenaf fiber reinforced epoxy composites |
| title_sort | mechanical performance of unstitched and silk fiber stitched woven kenaf fiber reinforced epoxy composites |
| url | http://psasir.upm.edu.my/id/eprint/86697/1/Mechanical%20performance%20.pdf |
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