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RISS 인기검색어
- 검색키워드
- 저자 : 아르빈드 싱(R. Arvind Singh) (검색결과 2 건)
- 무료
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김홍준(Hongjoon Kim),아르빈드 싱(R. Arvind Singh),김진석(Jinseok Kim),윤의성(Eui-Sung Yoon) 한국트라이볼로지학회 2006 한국윤활학회지(윤활학회지) Vol.22 No.5
Surfaces found in nature, including biological surfaces have been providing inspiration to modify/fabricate artificial surfaces as solutions for tribological applications. As an example, the concept of ‘lotus-effect’ has motivated tribologists world wide to modify/fabricate surfaces for enhanced tribological performance. These was done by creating nano/micro-scale asperities on various surfaces using ion beam milling and ion-beam assisted roughening. In order to understand the attributes of natural surfaces, which are inspirational to tribologists, we characterized the surface of two natural surfaces-Nelumbo nucifera (lotus) and Colocasia esculenta leaves. Further, we evaluated their micro-scale friction property, both in their fresh and dried conditions. The characterization of surfaces was conducted using a confocal microscope and SEM, which involved the evaluation of size and distribution of protuberances. The micro-scale friction property was evaluated using a ball-on-flat type micro-tribo tester, under reciprocating motion. A soda lime glass ball (2㎜ diameter) was used in these tests. Tests were conducted at the applied normal load of 3000 цN, at a sliding speed of 1 ㎜/sec for a scan length of 3㎜. All experiments were conducted at ambient temperature (24±1℃) and relative humidity (45±5%). It was observed that the friction behaviour of the natural surfaces was influenced by their surface characteristics (morphology and distribution of protuberances) and also by the condition (fresh or dried) in which they were tested.
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김홍준(Hongjoon Kim),아르빈드 싱(R. Arvind Singh),윤의성(Eui-Sung Yoon),공호성(Hosung Kong) 한국트라이볼로지학회 2005 한국트라이볼로지학회 학술대회 Vol.2005 No.11
Surfaces found in nature, including biological surfaces have been providing inspiration to modify/fabricate artificial surfaces as solutions for tribological applications. As an example, the concept of 'lotus-effect' has motivated tribologists world wide to modify/fabricate surfaces for enhanced tribological performance. These was done by creating nano/micro-scaIe asperities on various surfaces using ion beam milling and ion-beam assisted roughening. In order to understand the attributes of natural surfaces, which are inspirational to tribologists, we characterized the surface of two natural surfaces - Nelumbo nucifera (lotus) and Colocasia esculenta leaves. Further, we evaluated their micro-scale friction property, both in their fresh and dried conditions. The characterization of surfaces was conducted using a confocal microscope and SEM, which involved the evaluation of size and distribution of protuberances. The micro-scale friction property was evaluated using a ball-on-flat type micro-tribo tester, under reciprocating motion. A soda lime glass ball (2 ㎜ diameter) was used in these tests. Tests were conducted at the applied normal load of 3000μN, at a sliding speed of \ mm/sec for a scan length of 3 ㎜. All experiments were conducted at ambient temperature (24±1℃) and relative humidity (45±5%). It was observed that the friction behaviour of the natural surfaces was influenced by their surface characteristics (morphology and distribution of protuberances) and also by the condition (fresh or dried) in which they were tested.
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