Microindentation into an epoxy composition to assess the influence of aging on mechanical properties

0375071 - ÚTAM 2012 RIV GB eng J - Článek v odborném periodiku
Minster, Jiří - Šperl, Martin - Bláhová, O. - Hristová, J. - Lukeš, J. - Němeček, J.
Microindentation into an epoxy composition to assess the influence of aging on mechanical properties.
Journal of Applied Polymer Science. Roč. 123, č. 4 (2012), s. 2090-2094. ISSN 0021-8995. E-ISSN 1097-4628
Grant CEP: GA AV ČR(CZ) IAA200710801
Výzkumný záměr: CEZ:AV0Z20710524
Klíčová slova: indentation * aging * viscoelastic
Kód oboru RIV: JI - Kompozitní materiály
Impakt faktor: 1.395, rok: 2012

This work aims to apply the microindentation technique for assessing the influence of two aging factors—long-term weathering and long-term laboratory aging—on the time-dependent mechanical properties of an epoxy composition. The linear theory of viscoelasticity was taken as a background for the problem, and the time-independent Poisson ratio value was assumed to simplify the assessment. Two nano/microindenters were used (Hysitron Triboscan and Nano XP Indenter) at two different laboratories. Four special time-dependent loading histories were applied: indentation under a step load, indentation under a constant load rate, indentation with a fixed depth of penetration, and indentation under a constant rate of penetration.
Trvalý link: http://hdl.handle.net/11104/0006919