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Simple model on debonding of soft adhesives
Tetsuo Yamaguchi1, Costantino Creton, Masao Doi
1Department of Mechanical Engineering and International Institute for Carbon-Neutral Energy Research, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan. yamaguchi@mech.kyushu-u.ac.jp.
Soft Matter
|June 19, 2018
Summary
A new theoretical model explains soft adhesive debonding during probe-tack tests. It predicts key mechanical properties like peak stress and adhesion energy, validated by experimental comparisons.
Area of Science:
- Materials Science
- Adhesion Science
- Mechanics of Materials
Background:
- The probe-tack test is crucial for characterizing soft adhesive behavior.
- Understanding adhesive debonding mechanisms is essential for material design.
- Existing models may not fully capture rate-dependent fracture energies.
Purpose of the Study:
- To develop a simple theoretical model for soft adhesive debonding.
- To analyze the dynamics of interfacial cavity expansion.
- To derive analytical solutions for key mechanical properties.
Main Methods:
- Formulating a theoretical model based on energy balance.
- Considering the interplay of strain energy release rate and fracture energy.
- Deriving analytical solutions for various mechanical parameters.
Main Results:
- Analytical solutions for cavity size and stress-strain curves.
- Predictions for peak stress, strain at peak stress, and maximum strain.
- Quantification of adhesion energy based on the model.
Conclusions:
- The proposed model offers a simplified yet effective description of adhesive debonding.
- Theoretical predictions show good agreement with experimental data.
- The model provides valuable insights into the mechanics of soft adhesives.
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