Effects of layering sequence and gamma radiation on mechanical properties and morphology of Kevlar/oil palm EFB/epoxy hybrid composites
The present study evaluates the tensile and flexural properties, including the morphological features of gamma radiated Kevlar/oil palm empty fruit bunch (EFB)/epoxy hybrid composites fabricated using hand lay-up method with different layering sequences. The fabricated hybrid composites were exposed...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019
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| Online Access: | http://psasir.upm.edu.my/id/eprint/79601/ http://psasir.upm.edu.my/id/eprint/79601/1/Effects%20of%20layering%20sequence%20and%20gamma%20radiation%20on%20mechanical%20properties%20and%20morphology%20of%20Kevlar.pdf |
| _version_ | 1848858717323264000 |
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| author | Muhammad Amir, Siti Madiha Hameed Sultan, Mohamed Thariq Jawaid, Mohammad Safri, Syafiqah Nur Azrie Md Shah, Ain Umaira Yusof, Mohd Ridzuan Arockiam, Naveen Jesu Mohd, Shukri Salleh, Khairul A. M. Saba, Naheed |
| author_facet | Muhammad Amir, Siti Madiha Hameed Sultan, Mohamed Thariq Jawaid, Mohammad Safri, Syafiqah Nur Azrie Md Shah, Ain Umaira Yusof, Mohd Ridzuan Arockiam, Naveen Jesu Mohd, Shukri Salleh, Khairul A. M. Saba, Naheed |
| author_sort | Muhammad Amir, Siti Madiha |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The present study evaluates the tensile and flexural properties, including the morphological features of gamma radiated Kevlar/oil palm empty fruit bunch (EFB)/epoxy hybrid composites fabricated using hand lay-up method with different layering sequences. The fabricated hybrid composites were exposed to different gamma radiation doses: 25 kGy, 50 kGy and 150 kGy. Mechanical (tensile and flexural) and morphological properties were evaluated by using universal testing machine and scanning electron microscopy, respectively. Results obtained indicated that tensile strength of hybrid composites were effected by layering sequence. The layering sequence involving the use of EFB as core material yielded better mechanical performance compared to the layering pattern when Kevlar served as the core material. The tensile and flexural properties of hybrid composites showed an improvement for irradiated samples at a low radiation level. Hybrid composites displayed decrease in tensile strength at 50 kGy whereas flexural strength still showed an improvement. However, at 150 kGy, the tensile and flexural properties exhibited significant degradation. FESEM of tensile fracture composites showed the exist of fibre pull out and voids. However, at 150 kV bigger and ruptured voids were observed. It can be concluded from this finding that mechanical performance of Kevlar/EFB/Kevlar hybrid composites after Gamma radiation, has made it as promising material for automotive, aerospace and construction applications. |
| first_indexed | 2025-11-15T12:17:53Z |
| format | Article |
| id | upm-79601 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T12:17:53Z |
| publishDate | 2019 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-796012021-07-29T00:51:12Z http://psasir.upm.edu.my/id/eprint/79601/ Effects of layering sequence and gamma radiation on mechanical properties and morphology of Kevlar/oil palm EFB/epoxy hybrid composites Muhammad Amir, Siti Madiha Hameed Sultan, Mohamed Thariq Jawaid, Mohammad Safri, Syafiqah Nur Azrie Md Shah, Ain Umaira Yusof, Mohd Ridzuan Arockiam, Naveen Jesu Mohd, Shukri Salleh, Khairul A. M. Saba, Naheed The present study evaluates the tensile and flexural properties, including the morphological features of gamma radiated Kevlar/oil palm empty fruit bunch (EFB)/epoxy hybrid composites fabricated using hand lay-up method with different layering sequences. The fabricated hybrid composites were exposed to different gamma radiation doses: 25 kGy, 50 kGy and 150 kGy. Mechanical (tensile and flexural) and morphological properties were evaluated by using universal testing machine and scanning electron microscopy, respectively. Results obtained indicated that tensile strength of hybrid composites were effected by layering sequence. The layering sequence involving the use of EFB as core material yielded better mechanical performance compared to the layering pattern when Kevlar served as the core material. The tensile and flexural properties of hybrid composites showed an improvement for irradiated samples at a low radiation level. Hybrid composites displayed decrease in tensile strength at 50 kGy whereas flexural strength still showed an improvement. However, at 150 kGy, the tensile and flexural properties exhibited significant degradation. FESEM of tensile fracture composites showed the exist of fibre pull out and voids. However, at 150 kV bigger and ruptured voids were observed. It can be concluded from this finding that mechanical performance of Kevlar/EFB/Kevlar hybrid composites after Gamma radiation, has made it as promising material for automotive, aerospace and construction applications. Elsevier 2019 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/79601/1/Effects%20of%20layering%20sequence%20and%20gamma%20radiation%20on%20mechanical%20properties%20and%20morphology%20of%20Kevlar.pdf Muhammad Amir, Siti Madiha and Hameed Sultan, Mohamed Thariq and Jawaid, Mohammad and Safri, Syafiqah Nur Azrie and Md Shah, Ain Umaira and Yusof, Mohd Ridzuan and Arockiam, Naveen Jesu and Mohd, Shukri and Salleh, Khairul A. M. and Saba, Naheed (2019) Effects of layering sequence and gamma radiation on mechanical properties and morphology of Kevlar/oil palm EFB/epoxy hybrid composites. Journal of Materials Research and Technology, 8 (6). pp. 5362-5373. ISSN 2238-7854 https://www.sciencedirect.com/science/article/pii/S2238785419306246 10.1016/j.jmrt.2019.09.003 |
| spellingShingle | Muhammad Amir, Siti Madiha Hameed Sultan, Mohamed Thariq Jawaid, Mohammad Safri, Syafiqah Nur Azrie Md Shah, Ain Umaira Yusof, Mohd Ridzuan Arockiam, Naveen Jesu Mohd, Shukri Salleh, Khairul A. M. Saba, Naheed Effects of layering sequence and gamma radiation on mechanical properties and morphology of Kevlar/oil palm EFB/epoxy hybrid composites |
| title | Effects of layering sequence and gamma radiation on mechanical properties and morphology of Kevlar/oil palm EFB/epoxy hybrid composites |
| title_full | Effects of layering sequence and gamma radiation on mechanical properties and morphology of Kevlar/oil palm EFB/epoxy hybrid composites |
| title_fullStr | Effects of layering sequence and gamma radiation on mechanical properties and morphology of Kevlar/oil palm EFB/epoxy hybrid composites |
| title_full_unstemmed | Effects of layering sequence and gamma radiation on mechanical properties and morphology of Kevlar/oil palm EFB/epoxy hybrid composites |
| title_short | Effects of layering sequence and gamma radiation on mechanical properties and morphology of Kevlar/oil palm EFB/epoxy hybrid composites |
| title_sort | effects of layering sequence and gamma radiation on mechanical properties and morphology of kevlar/oil palm efb/epoxy hybrid composites |
| url | http://psasir.upm.edu.my/id/eprint/79601/ http://psasir.upm.edu.my/id/eprint/79601/ http://psasir.upm.edu.my/id/eprint/79601/ http://psasir.upm.edu.my/id/eprint/79601/1/Effects%20of%20layering%20sequence%20and%20gamma%20radiation%20on%20mechanical%20properties%20and%20morphology%20of%20Kevlar.pdf |