Thesis-2007-Vora.pdf (12.02 MB)
Depth-sensing indentation of an epoxy-based polymeric material
thesis
posted on 2018-08-22, 11:29 authored by Rushabh J. VoraIn a typical depth sensing indentation test, load and displacement beneath an indenter are
continuously recorded to determine a wide range of mechanical properties. In spite of the
wide practical and scientific applications of DSI to a variety of materials, analysis of DSI
data from materials exhibiting viscoelastic (VE)/viscoplastic (VP) behaviour is still not
fully understood. The specific aim of the present research was to investigate the
indentation behaviour of a polymeric material in order to generate meaningful
mechanical properties at a micron scale under different loading and environmental
conditions.
The material investigated in this work was an epoxy-based thermosetting polymeric
material (SL 7580) manufactured by a stereo lithography (SL) process. Information
regarding the mechanical properties of SL materials, which can vary across a component
and on ageing, is currently rather limited. Additionally, typical bulk property
measurements are unable to provide the spatial resolution necessary to characterise the
variations in mechanical properties observed in SL parts. The influence of the ageing and
post processing techniques used in stereo lithography process were studied using DSI and
their influence on the mechanical properties determined. [Continues.]
Funding
Loughborough University, Wolfson School of Mechanical and Manufacturing Engineering; Innovative Manufacturing and Construction Research Centre. EPSRC.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Publisher
© Rushabh VoraPublisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2007Notes
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.Language
- en