Applying Permanent, Robust Stenciled Patterns of Fine Particles to Elastomeric Surfaces

作者： Paul M. Mitalski1, Jacob C. McGough2, Chelsea S. Davis1,3,4 1School of Materials Engineering,Purdue University, 2School of Mechanical Engineering,Purdue University, 3Department of Mechanical Engineering,University of Delaware, 4Department of Materials Science and Engineering,University of Delaware

简介：

Overview

This study presents a reliable method for applying permanent markings on silicone surfaces, crucial for tracking large deformations in elastomers. The technique ensures that markings remain intact during mechanical and magnetic loading, facilitating accurate optical tracking.

Key Study Components

Area of Science

• Neuroscience
• Material Science
• Mechanical Engineering

Background

• Understanding large deformations in magnetorheological elastomers is essential for various applications.
• Optical tracking techniques like digital image correlation (DIC) require permanent surface markings for accurate measurements.
• Common marking methods often fail due to the non-adhesive nature of silicones.
• Reliable marking methods are needed for consistent tracking in experiments.

Purpose of Study

• To develop a method for marking elastomers that withstand high strains without degradation.
• To enable accurate optical tracking through repeated mechanical cycles.
• To facilitate aging and fatigue studies in elastomer materials.

Methods Used

• Application of adhesive and fine particles using an airbrush technique.
• Use of stencils to create specific patterns on silicone surfaces.
• Digital image correlation for tracking deformations during mechanical testing.
• Testing various geometries and patterns for optimal tracking performance.

Main Results

• Permanent markings can be applied to silicone surfaces without flaking or fading.
• Patterns created can be used repeatedly in large deformation experiments.
• Optical tracking demonstrated consistent results across various strain measurements.
• High fidelity transfer of patterns from molds to finished elastomer surfaces was achieved.

Conclusions

• The developed method provides a robust solution for marking elastomers in mechanical testing.
• Accurate tracking of deformations is now feasible, enhancing experimental reliability.
• This approach can significantly contribute to the study of material behavior under complex loading conditions.

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