Linear analysis of the viscoelastic response of polymer micro-pillars using the open-loop flat punch indentation test

Autor:	SW Han, Dong-Yol Yang, Bi Choi, Seung-Kyo Park, JH Kim, SJ Jeong, Hang-Soo Lee
Rok vydání:	2006
Předmět:	Materials science Creep Indentation Thermal Forensic engineering Measurement uncertainty Test method Nanoindentation Composite material Condensed Matter Physics Viscoelasticity Finite element method
Zdroj:	Philosophical Magazine. 86:5679-5690
ISSN:	1478-6443 1478-6435
DOI:	10.1080/14786430600724462
Popis:	A method for testing the viscoelastic property of polymer micro-pillars, based on open-loop flat punch indentation, is presented. The difficulties in performing a conventional creep or stress relaxation test using a nanoindentation apparatus with a leaf-spring structure are described and the advantages of our method explained. An analytic model for the test was devised and a simple formula for measuring creep compliance provided. As an example, polymer micro-pillars were fabricated on a glass substrate using nano-stereolithography (NSL) and their creep compliance measured. Experimental details are presented, including testing procedure, processing of raw data and analysis of test results, plus some issues, related to measurement uncertainty, are discussed, such as sensor resolution, parallelism, thermal drift and damping force.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6f1509a85eb494e36feaf183fd9f8da9 https://doi.org/10.1080/14786430600724462 Zobrazit plný text záznamu