Abstract
We present a method to measure surface deformations between a steel sphere and a flat PDMS surface. A sphere was chosen as the specimen to ensure the resulting deformation measurement can be compared to known theoretical models. A 36 mm diameter steel sphere was pressed into contact against flat, transparent polydimethylsiloxane (PDMS) sheets with a constant load rate controlled by an Instron testing machine. The modulus of the PDMS samples range from 241 kPa to 2.1 MPa. A digital image correlation technique was used to measure the surface deformation of the PDMS with increasing applied load.
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Alex McGhee
is a graduate student in the mechanical engineering department at the University of Florida specializing in experimental soft matter mechanics.
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© 2018 The Society for Experimental Mechanics, Inc.
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McGhee, A., Nguyen, D., Ifju, P. (2018). Surface Deformation with Simultaneous Contact Area Measurement for Soft Transparent Media due to Spherical Contact. In: Lamberti, L., Lin, MT., Furlong, C., Sciammarella, C. (eds) Advancement of Optical Methods in Experimental Mechanics, Volume 3. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-63028-1_12
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DOI: https://doi.org/10.1007/978-3-319-63028-1_12
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Publisher Name: Springer, Cham
Print ISBN: 978-3-319-63027-4
Online ISBN: 978-3-319-63028-1
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