Evaluation of energy dissipation involving adhesion hysteresis in spherical contact between a glass lens and a PDMS block

详细信息    查看全文

• 作者：Dooyoung Baek ; Pasomphone Hemthavy ; Shigeki Saito…
• 关键词：Adhesion by physical adsorption ; Adhesion hysteresis ; Energy dissipation
• 刊名：Applied Adhesion Science
• 出版年：2017
• 出版时间：December 2017
• 年：2017
• 卷：5
• 期：1
• 全文大小：1651KB
• 刊物类别：Surfaces and Interfaces, Thin Films; Mechanical Engineering; Biomaterials;
• 刊物主题：Surfaces and Interfaces, Thin Films; Mechanical Engineering; Biomaterials;
• 出版者：Springer International Publishing
• ISSN：2196-4351
• 卷排序：5

文摘

Adhesion hysteresis was investigated with the energy dissipation in the contact experiments between a spherical glass lens and a polydimethylsiloxane (PDMS) block. The experiments were conducted under step-by-step loading–unloading for the spontaneous energy dissipation. The force, contact radius, and displacement were measured simultaneously and the elasticity of the PDMS was confirmed. The work of adhesion was estimated in the loading process of the strain energy release rate. The total energy dissipation has been observed to be linearly proportional to the contact radius in the unloading process. The approximately constant gradient of the energy dissipation for each unloading process has been found. The result would provide how the dissipation is induced during the unloading as some interfacial phenomena. The fact has been discussed with some interfacial phenomena, e.g., the adsorbates on the surface, for the mechanism of adhesion hysteresis.