https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31950 3. The effects of particle size variation on compressive strength, effective elastic modulus, and modulus of toughness were investigated. An upper and a lower bound were estimated for the elastic modulus of particles in EP/epoxy foams. EP/epoxy foams showed Reuss-like behaviour similar to metals but atypical of non-plastic materials. In addition, results illustrated the significant contribution of the expanded perlite particles in the effective elastic modulus of the foams. Micro-structure of expanded perlite particles was examined and related to their macroscopic properties via two geometrical relationships. Post-test microscopic observations coupled with macroscopic observations taken during the test were used to understand the effect of particle size on the behaviour of the foams under compressive load. Observations revealed the presence of three different failure modes for all foams regardless of their particle size and density; however, the strain to activate each mode was different for each foam type.]]> Tue 04 Dec 2018 15:00:47 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20795 Sat 24 Mar 2018 08:06:00 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29289 Sat 24 Mar 2018 07:32:53 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30464 Sat 24 Mar 2018 07:24:19 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:48086
1. The use crystallographic texture measurement techniques to uncover the evolution of fabric within clay soils as a function of deformation, and,

2. The use of neutron diffraction strain measurement techniques to examine the behaviour of force chain networks during the compaction of granular systems.

In both cases, neutrons are able to provide quantitative measurements that are difficult (if not impossible) to obtain any other way. In the first case, this refers to the direct measurement of the average fabric tensor over a representative sample; in the second, neutrons are able to determine the three-dimensional stress state within individual particles and hence allow the calculation of the actual force network existing within an entire assembly of particles.]]> Fri 24 Feb 2023 15:17:17 AEDT ]]>