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Title
Japanese: 
English:Estimating work of adhesion using spherical contact between a glass lens and a PDMS block 
Author
Japanese: 白 斗永, 齋藤 滋規, 高橋 邦夫.  
English: Dooyoung Baek, Shigeki Saito, Kunio Takahashi.  
Language English 
Journal/Book name
Japanese: 
English:Journal of Adhesion Science and Technology 
Volume, Number, Page Volume 32    2    Page 158-172
Published date June 28, 2017 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL https://doi.org/10.1080/01694243.2017.1343519
 
DOI https://doi.org/10.1080/01694243.2017.1343519
Abstract This study proposes a method of estimating the thermodynamic work of adhesion using the spherical contact between a glass lens and a polydimethylsiloxane (PDMS) block. An equivalent stiffness of the measurement system is determined prior to the experimental measurements. Parameters such as force, contact radius, and displacement are measured during the contact processes that consist of a loading process and an unloading process. The elastic modulus of the PDMS is determined from the measured parameters. Hysteresis is observed in the contact process, showing that the process is in a non-equilibrium state. However, an equilibrium instant exists when the contact area attained a maximum value. The work of adhesion can be determined from the strain energy release rate using the parameters of the instant. The estimated work of adhesion is in the range estimated by another method. The limitation of the conventional method is also presented. The proposed method is suggested to be applicable to interface characterization in a practical adhesive contact with soft materials.

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