Structure, Mechanical Behavior and Puncture Resistance of Grass Carp Scales

This work is conducted to investigate the hierarchical structure, mechanical behavior and fracture resistance of grass carp scales with different water contents （hydrated and dehydrated） and load conditions （uniaxial, biaxial and punch tests）. The whole cross-section of scales is investigated, and i...

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Bibliographic Details
Published inJournal of bionics engineering Vol. 14; no. 2; pp. 356 - 368
Main Authors Liu, Peng, Zhu, Deju, Wang, Junwen, Bui, Tinh Quoc
Format Journal Article
LanguageEnglish
Published Singapore Elsevier Ltd 01.06.2017
Springer Singapore
Subjects
Artificial Intelligence
biaxial test
Biochemical Engineering
Bioinformatics
Biomaterials
Biomedical Engineering and Bioengineering
Biomedical Engineering/Biotechnology
Engineering
grass carp scale
mechanical behavior
penetration resistance
力学行为
单轴拉伸试验
层次结构
抗断裂性能
穿刺
胶原纤维
草鱼
鳞片
grass carp scale
penetration resistance
mechanical behavior
biaxial test
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Summary:This work is conducted to investigate the hierarchical structure, mechanical behavior and fracture resistance of grass carp scales with different water contents （hydrated and dehydrated） and load conditions （uniaxial, biaxial and punch tests）. The whole cross-section of scales is investigated, and it is found that the bony layer displays discontinuity and partly embeds in collagen layer. Four different locations are considered under both tensile and punch tests. The results of the uniaxial tensile test show a correlation between the failure mode and the distribution of surface morphology on scales. The biaxial test results show that there are minor differences in the tensile strength and the Young＇ modulus compared with those of the uniaxial tests, but the ultimate strain is about 20% - 50%. Puncture tests are also conducted with different size of needles and different hardness silicon rubbers as substrate. The results show that the puncture force and deformation are dependent on the size of needle and the hardness of substrate. The failure pattern of scales is related to the water content. Radial cracks occur in the bony layer of hydrated scale, and the collagen fibers twist around the puncture site. However, the shear failure occurs in the bony layer of dehydrated scale.
Bibliography:22-1355/TB
This work is conducted to investigate the hierarchical structure, mechanical behavior and fracture resistance of grass carp scales with different water contents （hydrated and dehydrated） and load conditions （uniaxial, biaxial and punch tests）. The whole cross-section of scales is investigated, and it is found that the bony layer displays discontinuity and partly embeds in collagen layer. Four different locations are considered under both tensile and punch tests. The results of the uniaxial tensile test show a correlation between the failure mode and the distribution of surface morphology on scales. The biaxial test results show that there are minor differences in the tensile strength and the Young＇ modulus compared with those of the uniaxial tests, but the ultimate strain is about 20% - 50%. Puncture tests are also conducted with different size of needles and different hardness silicon rubbers as substrate. The results show that the puncture force and deformation are dependent on the size of needle and the hardness of substrate. The failure pattern of scales is related to the water content. Radial cracks occur in the bony layer of hydrated scale, and the collagen fibers twist around the puncture site. However, the shear failure occurs in the bony layer of dehydrated scale.
grass carp scale, mechanical behavior, biaxial test, penetration resistance
ISSN:1672-6529
2543-2141
DOI:10.1016/S1672-6529(16)60404-3