Effects of surface morphology on tribological properties of Arapaima gigas scales

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外文摘要：The remarkable mechanical adaptability of arapaima(Arapaima gigas)scales has made them an important subject of study.However,no research has been conducted into their tribological properties,which are crucial for the protectability and flexibility of arapaimas.In this study,by combining morphological characterizations,friction experiments,and theoretical analyses,the relationship between the surface morphology and tribological properties of arapaima scales is determined.These results indicate that arapaima scales exhibit varying surface morphologies in different regions.More specifically,the exposed regions of scales feature grooves and a circulus,whereas the covered regions exhibit bumps.The specific surface morphology of arapaima scales produces varying tribological properties across different regions and sliding directions.The unique tribological properties of arapaima scales influence the forces received from predator attacks and neighboring scales,directly influencing the arapaima's protective capabilities.This study provides new insights into the mechanisms of natural flexible dermal armors,and it has potential applications in personal protective systems.

外文关键词：

arapaimascalessurface morphologytribological propertiesprotectability

作者：

Shuaijun ZHANG、Pengpeng BAI、Xiangli WEN、Chengwei WEN、Hui CAO、Wanyou YANG、Yu TIAN

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作者单位：

State Key Laboratory of Tribology in Advanced Equipment,Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China

Key Laboratory of Bionic Engineering(Ministry of Education,China),Jilin University,Changchun 130022,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaOpening Project of the Key Laboratory of Bionic Engineering(Ministry of Education)Jilin University

项目编号：

5227519852205206K202201

出版年：

2024

DOI：

10.1007/s40544-023-0806-y

摩擦(英文)

CSTPCDEI

ISSN：2223-7690

年,卷(期)：2024.12(7)

参考文献量43