Development of Soft and wet Indentation Concept

2015 Fiscal Year Final Research Report

• Project/Area Number: 26630011
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Materials/Mechanics of materials
• Research Institution: Osaka University
• Principal Investigator: Shibutani Yoji 大阪大学, 工学(系)研究科(研究院), 教授 (70206150)
• Co-Investigator(Kenkyū-buntansha): MATSUNAKA Daisuke 信州大学, 工学部, 准教授 (60403151)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: ナノインデンテーション / 表面吸着 / 接触力学 / ソフトマター

Outline of Final Research Achievements

This research is concerning to the adsorption behavior observed in the physical contact with the soft and wet matters. There are two major theories on this mechanics proposed by Johnson, Kendall and Roberts in 1971 and by Dejaguin, Muller and Toporov in 1975. The present results give the findings about the similarity of both theories and also about the problems for the practical applications. These conclusions contribute to develop the revised model to the contact with adsorption. We have also done the indentation to the human wet teeth with the heterogeneous harder and softer regions. The new technique for solidification of such a wet sample was proposed and the local mechanical properties of the teeth can be successfully obtained by indentation with the much smaller unevenness.

Free Research Field

固体力学