TY - JOUR
T1 - Accurately evaluating Young's modulus of polymers through nanoindentations
T2 - A phenomenological correction factor to the Oliver and Pharr procedure
AU - Tranchida, Davide
AU - Piccarolo, Stefano
AU - Loos, Joachim
AU - Alexeev, Alexander
N1 - Funding Information:
This work was partially funded by the European Science Foundation through a Short Term Scientific Mission in the framework of COST P12, Structuring of Polymers, Action. The authors acknowledge the financial support of the Ph.D. grant of DT by the University of Palermo and the financial support from the Italian Ministry of University and Scientific Research (MIUR, Italy), through the PRIN04 grant.
PY - 2006
Y1 - 2006
N2 - The Oliver and Pharr [J. Mater. Res. 7, 1564 (1992)] procedure is a widely used tool to analyze nanoindentation force curves obtained on metals or ceramics. Its application to polymers is, however, difficult, as Young's moduli are commonly overestimated mainly because of viscoelastic effects and pileup. However, polymers spanning a large range of morphologies have been used in this work to introduce a phenomenological correction factor. It depends on indenter geometry: sets of calibration indentations have to be performed on some polymers with known elastic moduli to characterize each indenter.
AB - The Oliver and Pharr [J. Mater. Res. 7, 1564 (1992)] procedure is a widely used tool to analyze nanoindentation force curves obtained on metals or ceramics. Its application to polymers is, however, difficult, as Young's moduli are commonly overestimated mainly because of viscoelastic effects and pileup. However, polymers spanning a large range of morphologies have been used in this work to introduce a phenomenological correction factor. It depends on indenter geometry: sets of calibration indentations have to be performed on some polymers with known elastic moduli to characterize each indenter.
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U2 - 10.1063/1.2364863
DO - 10.1063/1.2364863
M3 - Article
AN - SCOPUS:33750465157
VL - 89
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 17
M1 - 171905
ER -