Analysis and verification of a biomimetic design model based on fish skin
Many biological architectures are Bouligand structures, which comprise uniaxial fiber layers stacked in a periodic helical arrangement and are characterized by high damage resistance. As an effective flexible protective structure, fish skin is a Bouligand structure that protects the body while ensur...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/abeeca |
| _version_ | 1797746772015054848 |
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| author | Yu Zheng Ce Guo Xin Li |
| author_facet | Yu Zheng Ce Guo Xin Li |
| author_sort | Yu Zheng |
| collection | DOAJ |
| description | Many biological architectures are Bouligand structures, which comprise uniaxial fiber layers stacked in a periodic helical arrangement and are characterized by high damage resistance. As an effective flexible protective structure, fish skin is a Bouligand structure that protects the body while ensure flexibility during swimming and predation. In this paper, an analytical model inspired by fish skin is established based on previous studies, and the parameters for describing crack growth are determined. Then, mathematical expressions for the local stress intensity factors and plastic zone are used to predict how the helical stacking angle α influences the crack propagation. The results show that crack deflection and twisting improve the fracture toughness of the composite structure greatly, with the optimal fracture toughness being that for α = 60° – 70°. Moreover, biomimetic flexible composite structures inspired by fish skin are produced using silicone and Kevlar fibers. Scanning electron microscopy is used to observe the cross-sectional morphology of the composite structures, showing that the interfaces between the silicone and Kevlar fibers are highly compact. Results from experimental impact tests agree well with the predicted results. |
| first_indexed | 2024-03-12T15:41:38Z |
| format | Article |
| id | doaj.art-e126b75240df49748688461d09323736 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:41:38Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-e126b75240df49748688461d093237362023-08-09T15:57:54ZengIOP PublishingMaterials Research Express2053-15912021-01-018303501410.1088/2053-1591/abeecaAnalysis and verification of a biomimetic design model based on fish skinYu Zheng0https://orcid.org/0000-0003-2140-7582Ce Guo1Xin Li2https://orcid.org/0000-0002-4986-5035Institute of Bio-inspired Structure and Surface Engineering, College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics , Nanjing 210016, People’s Republic of ChinaInstitute of Bio-inspired Structure and Surface Engineering, College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics , Nanjing 210016, People’s Republic of ChinaInstitute of Bio-inspired Structure and Surface Engineering, College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics , Nanjing 210016, People’s Republic of ChinaMany biological architectures are Bouligand structures, which comprise uniaxial fiber layers stacked in a periodic helical arrangement and are characterized by high damage resistance. As an effective flexible protective structure, fish skin is a Bouligand structure that protects the body while ensure flexibility during swimming and predation. In this paper, an analytical model inspired by fish skin is established based on previous studies, and the parameters for describing crack growth are determined. Then, mathematical expressions for the local stress intensity factors and plastic zone are used to predict how the helical stacking angle α influences the crack propagation. The results show that crack deflection and twisting improve the fracture toughness of the composite structure greatly, with the optimal fracture toughness being that for α = 60° – 70°. Moreover, biomimetic flexible composite structures inspired by fish skin are produced using silicone and Kevlar fibers. Scanning electron microscopy is used to observe the cross-sectional morphology of the composite structures, showing that the interfaces between the silicone and Kevlar fibers are highly compact. Results from experimental impact tests agree well with the predicted results.https://doi.org/10.1088/2053-1591/abeecaBouligand structureanalytical modelmicrostructureimpact testsbiomimetic |
| spellingShingle | Yu Zheng Ce Guo Xin Li Analysis and verification of a biomimetic design model based on fish skin Materials Research Express Bouligand structure analytical model microstructure impact tests biomimetic |
| title | Analysis and verification of a biomimetic design model based on fish skin |
| title_full | Analysis and verification of a biomimetic design model based on fish skin |
| title_fullStr | Analysis and verification of a biomimetic design model based on fish skin |
| title_full_unstemmed | Analysis and verification of a biomimetic design model based on fish skin |
| title_short | Analysis and verification of a biomimetic design model based on fish skin |
| title_sort | analysis and verification of a biomimetic design model based on fish skin |
| topic | Bouligand structure analytical model microstructure impact tests biomimetic |
| url | https://doi.org/10.1088/2053-1591/abeeca |
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