Advanced Materials Research Group

Seminar: A new test fixture for biaxial stretching of polymeric sheets By Davide De Focatiis

 
Location
ESLC B12
Date(s)
Wednesday 15th May 2019 (12:30-13:15)
Contact
For more information on the AMRG Seminar Series, or if you would like to arrange to give a presentation, please contact Hayley Revill.

For more information on this presentation, please contact Davide De Focatiis.

Description
The Advanced Materials Research Group (AMRG) would like to welcome you to attend the following seminar: 

 

A new test fixture for biaxial stretching of polymeric sheets 

 By Davide De Focatiis

Abstract:

There is always a need for reliable experimental data, whether to support the development of constitutive models, or to provide parameters, and in general standards provide a convenient methodology. There are, however, often circumstances that prevent the use of standard methods, for example a limited supply of material, limited funds to purchase the equipment required, or just an absence of applicable standards. This talk will focus on one example in which a new test fixture has been developed to address a specific research requirement: the need for accessible and low-cost biaxial testing for polymers and elastomers. A remarkably simple fixture was designed based on a single degree of freedom mechanism and a variable number of clamps arranged along a circumference, able to stretch polymers biaxially using the actuation provided by a standard uniaxial test machine. Validation was performed on several elastomers by comparison with a twin-axis biaxial machine, and different variants of the fixture have also been compared in terms of number of clamping points and of grip design.

Advanced Materials Research Group

Faculty of Engineering
The University of Nottingham
University Park
Nottingham, NG7 2RD



email:AdvMaterials@nottingham.ac.uk