On the time dependence of size effect in polydimethylsiloxane

F. Alisafaei, Seyed Hamid Reza Sanei, E. J. Smith, Chung Souk Han

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Nanoindentation tests at the nano-micrometer scales are conducted to investigate the depth and time dependent deformation mechanisms of polydimethylsiloxane (PDMS). Astonishing indentation size effects observed in these experiments are analyzed with an existing theoretical hardness model, and the effects of loading time on the hardness and indentation stiffness of PDMS are studied. The change in the indentation recovery with respect to indentation depth and loading time are analyzed. Furthermore, it is shown that the stiffness of PDMS obtained at the maximum applied force can be efficiently applied to validate the applied theoretical hardness model with the experimental results.

Original languageEnglish (US)
Title of host publicationMechanics of Solids, Structures and Fluids
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Print)9780791856383
DOIs
StatePublished - Jan 1 2013
EventASME 2013 International Mechanical Engineering Congress and Exposition, IMECE 2013 - San Diego, CA, United States
Duration: Nov 15 2013Nov 21 2013

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume9

Other

OtherASME 2013 International Mechanical Engineering Congress and Exposition, IMECE 2013
CountryUnited States
CitySan Diego, CA
Period11/15/1311/21/13

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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