Tuning interlaminar fracture toughness of fine z-pin reinforced polymer composite
This paper aims to improve the interlaminar fracture toughness of carbon fiber reinforced polymer (CFRP) composites by implanting fine z-pins with the minimum damage on in-plane fibers. Z-pins with diameters as small as 0.1 mm and 0.2 mm were prepared by using carbon fiber tows with different mechan...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127521008480 |
| _version_ | 1819175851611127808 |
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| author | Min Li Zhe Che Shaokai Wang Yubo Zhou Hao Fu Yizhuo Gu Wei Zhang |
| author_facet | Min Li Zhe Che Shaokai Wang Yubo Zhou Hao Fu Yizhuo Gu Wei Zhang |
| author_sort | Min Li |
| collection | DOAJ |
| description | This paper aims to improve the interlaminar fracture toughness of carbon fiber reinforced polymer (CFRP) composites by implanting fine z-pins with the minimum damage on in-plane fibers. Z-pins with diameters as small as 0.1 mm and 0.2 mm were prepared by using carbon fiber tows with different mechanical properties. The effect of the mechanical property of carbon fiber pin on the interlaminar fracture toughness of composite laminate was investigated to reveal the enhancement mechanism. The results show that fine z-pins significantly improve the interlaminar fracture toughness and simultaneously are favorable for maintaining high retentions of in-plane mechanical properties of composite laminate. Compared with control sample, the propagation GIC values of CFRPs implanted with 0.2 mm and 0.1 mm CCF800 z-pins increase by 276 % and 541 % respectively at a low pin volume fraction of 0.16 vol%. Both z-pin pull-out and z-pin fracture failure behaviors can be observed for these fine z-pin reinforced composites. The higher tensile properties of z-pins and better transverse shear resistance tend to result in the failure of z-pin pull-out. With the decrease of z-pin diameter, the probability of z-pin fracture failure becomes greater, and correspondingly stronger pinning effect and larger failure load are achieved. |
| first_indexed | 2024-12-22T21:01:26Z |
| format | Article |
| id | doaj.art-064b13f8c6b546bc86059666e6b01987 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-22T21:01:26Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-064b13f8c6b546bc86059666e6b019872022-12-21T18:12:49ZengElsevierMaterials & Design0264-12752021-12-01212110293Tuning interlaminar fracture toughness of fine z-pin reinforced polymer compositeMin Li0Zhe Che1Shaokai Wang2Yubo Zhou3Hao Fu4Yizhuo Gu5Wei Zhang6School of Materials Science and Engineering, Beihang University, No. 37 Xueyuan Road, Haidian District, Beijing 100191, China; Ningbo Institute of Technology, Beihang University, Ningbo 315800, ChinaSchool of Materials Science and Engineering, Beihang University, No. 37 Xueyuan Road, Haidian District, Beijing 100191, ChinaSchool of Materials Science and Engineering, Beihang University, No. 37 Xueyuan Road, Haidian District, Beijing 100191, China; Ningbo Institute of Technology, Beihang University, Ningbo 315800, China; Corresponding author at: School of Materials Science and Engineering, Beihang University, No. 37 Xueyuan Road, Haidian District, Beijing 100191, China.School of Materials Science and Engineering, Beihang University, No. 37 Xueyuan Road, Haidian District, Beijing 100191, ChinaSchool of Materials Science and Engineering, Beihang University, No. 37 Xueyuan Road, Haidian District, Beijing 100191, ChinaResearch Institute of Frontier Science, Beihang University, No. 37 Xueyuan Road, Haidian District, Beijing 100191, ChinaResearch Institute of Frontier Science, Beihang University, No. 37 Xueyuan Road, Haidian District, Beijing 100191, ChinaThis paper aims to improve the interlaminar fracture toughness of carbon fiber reinforced polymer (CFRP) composites by implanting fine z-pins with the minimum damage on in-plane fibers. Z-pins with diameters as small as 0.1 mm and 0.2 mm were prepared by using carbon fiber tows with different mechanical properties. The effect of the mechanical property of carbon fiber pin on the interlaminar fracture toughness of composite laminate was investigated to reveal the enhancement mechanism. The results show that fine z-pins significantly improve the interlaminar fracture toughness and simultaneously are favorable for maintaining high retentions of in-plane mechanical properties of composite laminate. Compared with control sample, the propagation GIC values of CFRPs implanted with 0.2 mm and 0.1 mm CCF800 z-pins increase by 276 % and 541 % respectively at a low pin volume fraction of 0.16 vol%. Both z-pin pull-out and z-pin fracture failure behaviors can be observed for these fine z-pin reinforced composites. The higher tensile properties of z-pins and better transverse shear resistance tend to result in the failure of z-pin pull-out. With the decrease of z-pin diameter, the probability of z-pin fracture failure becomes greater, and correspondingly stronger pinning effect and larger failure load are achieved.http://www.sciencedirect.com/science/article/pii/S0264127521008480Polymer-matrix compositesFracture toughnessZ-pinDelamination |
| spellingShingle | Min Li Zhe Che Shaokai Wang Yubo Zhou Hao Fu Yizhuo Gu Wei Zhang Tuning interlaminar fracture toughness of fine z-pin reinforced polymer composite Materials & Design Polymer-matrix composites Fracture toughness Z-pin Delamination |
| title | Tuning interlaminar fracture toughness of fine z-pin reinforced polymer composite |
| title_full | Tuning interlaminar fracture toughness of fine z-pin reinforced polymer composite |
| title_fullStr | Tuning interlaminar fracture toughness of fine z-pin reinforced polymer composite |
| title_full_unstemmed | Tuning interlaminar fracture toughness of fine z-pin reinforced polymer composite |
| title_short | Tuning interlaminar fracture toughness of fine z-pin reinforced polymer composite |
| title_sort | tuning interlaminar fracture toughness of fine z pin reinforced polymer composite |
| topic | Polymer-matrix composites Fracture toughness Z-pin Delamination |
| url | http://www.sciencedirect.com/science/article/pii/S0264127521008480 |
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