https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45187 Wed 26 Oct 2022 19:24:26 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:45100 Wed 26 Oct 2022 15:17:17 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:55189 Wed 24 Apr 2024 13:01:40 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:38874 Wed 23 Feb 2022 09:24:32 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34230 Wed 20 Feb 2019 15:55:13 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:52442 Wed 11 Oct 2023 14:54:44 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:11478 Wed 11 Apr 2018 13:57:13 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:30958 Wed 11 Apr 2018 13:52:12 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:25653 Wed 11 Apr 2018 12:46:18 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:24928 Wed 11 Apr 2018 12:21:51 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:14556 Wed 11 Apr 2018 11:32:47 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:4413 Wed 11 Apr 2018 10:11:57 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37922 Tue 29 Jun 2021 15:16:09 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37921 Tue 29 Jun 2021 14:47:44 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37919 Tue 29 Jun 2021 14:26:51 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37907 Tue 22 Jun 2021 19:18:10 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37906 Tue 22 Jun 2021 19:10:54 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37905 −3. Microstructural studies confirmed that no relevant chemical reaction occurred within the foam, in particular in the vicinity of the particle-matrix interfaces. The mechanical properties of the produced FG-MSF were evaluated using quasi-static compression testing. The results showed that the deformation mechanism of the FG-MSF is a mixed mode and varies between the two different filler layers. The energy absorption of the FG-MSF sample was increased compared to uniform syntactic foams containing only a single particle filler.]]> Tue 22 Jun 2021 18:36:18 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37904 −3. As-cast and solution heat-treated samples were tested to investigate the compressive properties of the ZA27 syntactic foam. To this end, quasi-static compression tests were conducted. In addition, microstructural analysis of the as-cast and heat-treated syntactic foams was carried out using scanning electron microscopy. The results indicate that the heat treatment alters the microstructure of the ZA27 alloy matrix from a multiphase dendrite to a spheroidized microstructure with improved ductility. Moreover, the heat treatment considerably enhances the energy absorption and plateau stress (σ_pl) of the syntactic foam. Optical analysis of the syntactic foams under compression shows that the dominant deformation mechanism of the as-cast foams is brittle fracture. In comparison, the heat-treated samples undergo a more ductile deformation.]]> Tue 22 Jun 2021 18:29:06 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:33787 Tue 15 Jan 2019 12:15:49 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37920 Tue 14 May 2024 10:08:04 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34399 Tue 05 Mar 2019 13:21:55 AEDT ]]> https://nova.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://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34033 Tue 03 Sep 2019 18:30:23 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:35236 -3. The results show that no chemical reaction occurred between the AZ91 matrix and the activated carbon particles. The mechanical properties of the foam were evaluated under quasi-static compression loading conditions, and showed a consistent trend for the energy absorption of the fabricated AZ91-AC syntactic foams. The deformation mechanism of samples was a brittle fracture mode with the formation of shear bands during the fracture of all samples.]]> Tue 02 Jul 2019 15:14:51 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:35304 Thu 11 Jul 2019 16:16:19 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:35552 Thu 10 Nov 2022 12:45:10 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:11952 Sat 24 Mar 2018 10:32:26 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:8468 Sat 24 Mar 2018 08:42:09 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:8463 Sat 24 Mar 2018 08:42:09 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:8479 Sat 24 Mar 2018 08:42:01 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:7263 Sat 24 Mar 2018 08:33:49 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:12462 Sat 24 Mar 2018 08:17:50 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:12116 Sat 24 Mar 2018 08:11:02 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:12115 Sat 24 Mar 2018 08:11:02 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:19020 Sat 24 Mar 2018 08:05:15 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:16283 Sat 24 Mar 2018 07:59:26 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:21122 Sat 24 Mar 2018 07:54:02 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:5252 Sat 24 Mar 2018 07:46:36 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:6713 Sat 24 Mar 2018 07:46:02 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26132 Sat 24 Mar 2018 07:41:04 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:29857 k-nearest neighbour algorithm for pore identification. The results indicate a weak density gradient parallel to the casting direction and a slight preference of particle orientation perpendicular to the casting direction.]]> Sat 24 Mar 2018 07:40:44 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:25360 Sat 24 Mar 2018 07:24:41 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:23332 Sat 24 Mar 2018 07:15:15 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44842 Mon 24 Oct 2022 10:13:34 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:43430 4) scaffold was produced using counter-gravity infiltration casting method and its in vitro degradation behaviour was evaluated using an electrochemical technique in simulated body fluid (SBF) for potential applications in bone fracture fixation devices. The porous zinc alloy exhibited porosity of ~60% with interconnected pores, and the pore size was 1–2 mm. The in vitro potentiodynamic polarization results showed that the degradation rate of the porous zinc alloy was 0.16 mm/year, which is ~15% higher than that of the non-porous pure zinc metal (0.14 mm/year). Highly biocompatible calcium phosphate (CaP) was electrochemically deposited on the porous zinc alloy and its in vitro degradation behaviour was also studied. The micrographs of the CaP deposited porous zinc alloy revealed uniformly coverage of CaP particles on the outer surface of the alloy and partial deposition on the inside of the pores. The morphology of the deposited CaP particles was predominantly spherical-shaped, but flake-like particles were also evident on the inside of the pores. Interestingly, the degradation rate of the CaP deposited porous zinc alloy (0.5 mm/year) was three times higher than that of the porous zinc alloy. It can be hypothesized that the restricted SBF flow through the partially blocked pores by the CaP particles have locally raised the pH inside the pores and thus increased the degradation.]]> Mon 19 Sep 2022 09:57:20 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:33289 Fri 28 Sep 2018 15:54:19 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:33288 Fri 28 Sep 2018 15:54:18 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37955 Fri 17 Nov 2023 11:42:01 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:44471 Fri 14 Oct 2022 08:43:49 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:48164 Fri 10 Mar 2023 16:46:38 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54693 Fri 08 Mar 2024 11:59:44 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49148 Fri 05 May 2023 12:14:03 AEST ]]>