Mode II and Mode III Delamination of Carbon Fiber/Epoxy Composite Laminates Subjected to a Four-Point Bending Mechanism
Accurate determination of mode III interlaminar fracture toughness is paramount in composite materials due to its critical role in edge delamination, which nonetheless remains a significant challenge encountered. As such, this study focused on the investigation of mode II and III interlaminar fractu...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | English |
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Elsevier BV
2024
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/93890 |
| _version_ | 1848765807316697088 |
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| author | Syed Abdullah, S.I.B. Bokti, S.K. Wong, K.J. Johar, M. Chong, W.W.F. Dong, Roger |
| author_facet | Syed Abdullah, S.I.B. Bokti, S.K. Wong, K.J. Johar, M. Chong, W.W.F. Dong, Roger |
| author_sort | Syed Abdullah, S.I.B. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Accurate determination of mode III interlaminar fracture toughness is paramount in composite materials due to its critical role in edge delamination, which nonetheless remains a significant challenge encountered. As such, this study focused on the investigation of mode II and III interlaminar fracture behavior of carbon fiber (CF)/epoxy composite laminates using four-end notched flexure (4ENF) tests and four-point bending plate (4PBP) tests, respectively. In particular, a cohesive zone model was employed for the simulation of the delamination process via finite element analysis (FEA). The mode II fracture toughness of CF/epoxy composites was determined to be 1.41 N/mm in experimental work. Additionally, experimental data in relation to force-displacement curves were in good agreement with numerical simulation results, which validated this simulation approach to successfully capture the mechanical response of composite laminates. In a similar manner, mode III delamination fracture toughness for CF/epoxy composites was numerically estimated to be 2.1 N/mm. Microscopic analysis indicated shear cusps were observed in both mode II and III specimens, as opposed to existing flakes discovered in mode III specimens only. Overall, this research enlightens a simple and effective way to estimate pure mode III fracture toughness and corresponding delamination behavior with respect to crack initiation and propagation. |
| first_indexed | 2025-11-14T11:41:07Z |
| format | Journal Article |
| id | curtin-20.500.11937-93890 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:41:07Z |
| publishDate | 2024 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-938902025-02-19T05:46:21Z Mode II and Mode III Delamination of Carbon Fiber/Epoxy Composite Laminates Subjected to a Four-Point Bending Mechanism Syed Abdullah, S.I.B. Bokti, S.K. Wong, K.J. Johar, M. Chong, W.W.F. Dong, Roger Delamination Finite element analysis (FEA) Fracture toughness Laminate structures Polymer-matrix composites (PMCs) Accurate determination of mode III interlaminar fracture toughness is paramount in composite materials due to its critical role in edge delamination, which nonetheless remains a significant challenge encountered. As such, this study focused on the investigation of mode II and III interlaminar fracture behavior of carbon fiber (CF)/epoxy composite laminates using four-end notched flexure (4ENF) tests and four-point bending plate (4PBP) tests, respectively. In particular, a cohesive zone model was employed for the simulation of the delamination process via finite element analysis (FEA). The mode II fracture toughness of CF/epoxy composites was determined to be 1.41 N/mm in experimental work. Additionally, experimental data in relation to force-displacement curves were in good agreement with numerical simulation results, which validated this simulation approach to successfully capture the mechanical response of composite laminates. In a similar manner, mode III delamination fracture toughness for CF/epoxy composites was numerically estimated to be 2.1 N/mm. Microscopic analysis indicated shear cusps were observed in both mode II and III specimens, as opposed to existing flakes discovered in mode III specimens only. Overall, this research enlightens a simple and effective way to estimate pure mode III fracture toughness and corresponding delamination behavior with respect to crack initiation and propagation. 2024 Journal Article http://hdl.handle.net/20.500.11937/93890 English http://creativecommons.org/licenses/by/4.0/ Elsevier BV fulltext |
| spellingShingle | Delamination Finite element analysis (FEA) Fracture toughness Laminate structures Polymer-matrix composites (PMCs) Syed Abdullah, S.I.B. Bokti, S.K. Wong, K.J. Johar, M. Chong, W.W.F. Dong, Roger Mode II and Mode III Delamination of Carbon Fiber/Epoxy Composite Laminates Subjected to a Four-Point Bending Mechanism |
| title | Mode II and Mode III Delamination of Carbon Fiber/Epoxy Composite Laminates Subjected to a Four-Point Bending Mechanism |
| title_full | Mode II and Mode III Delamination of Carbon Fiber/Epoxy Composite Laminates Subjected to a Four-Point Bending Mechanism |
| title_fullStr | Mode II and Mode III Delamination of Carbon Fiber/Epoxy Composite Laminates Subjected to a Four-Point Bending Mechanism |
| title_full_unstemmed | Mode II and Mode III Delamination of Carbon Fiber/Epoxy Composite Laminates Subjected to a Four-Point Bending Mechanism |
| title_short | Mode II and Mode III Delamination of Carbon Fiber/Epoxy Composite Laminates Subjected to a Four-Point Bending Mechanism |
| title_sort | mode ii and mode iii delamination of carbon fiber/epoxy composite laminates subjected to a four-point bending mechanism |
| topic | Delamination Finite element analysis (FEA) Fracture toughness Laminate structures Polymer-matrix composites (PMCs) |
| url | http://hdl.handle.net/20.500.11937/93890 |