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|Title:||Extracting the elastic and viscoelastic properties of a polymeric film using a sharp indentation relaxation test|
|Source:||Zhang, C.Y., Zhang, Y.W., Zeng, K.Y., Shen, L., Wang, Y.Y. (2006-12). Extracting the elastic and viscoelastic properties of a polymeric film using a sharp indentation relaxation test. Journal of Materials Research 21 (12) : 2991-3000. ScholarBank@NUS Repository. https://doi.org/10.1557/jmr.2006.0395|
|Abstract:||A new approach is proposed to extract the elastic and viscoelastic properties of a polymeric film on a hard substrate using a sharp indentation relaxation test. In the theoretic formulation, a sharp indentation relaxation test on a film/substrate system was interpreted by its equivalent flat-ended punch indentation relaxation test. The radius of the equivalent flat-ended punch was determined by the residual depth of the sharp indentation. A semi-analytical solution for a flat-ended punch relaxation test was derived. Sharp indentation relaxation tests on a polymethyl methacrylate film and a polycarbonate film on a glass substrate were performed. The semi-analytical solution and the experimental results were used to extract the elastic-viscoelastic parameters of the films. The extracted elastic-viscoelastic parameters of both films were found to be in a good agreement with data sheets of the films. The proposed approach provides a simple and yet feasible way to extract "film-only" elastic and viscoelastic properties. © 2006 Materials Research Society.|
|Source Title:||Journal of Materials Research|
|Appears in Collections:||Staff Publications|
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