Advanced Roadside Barrier System

Transurban’s Innovation Grant Scheme has enabled a new research Project focused on the development of Advanced Roadside Barrier Systems.

Conventional roadside safety barriers are used in large numbers and thus are optimized for cost efficiency. However, they do have significant limitations in situations that require high energy absorption, in particular in confined spaces. Examples are frontal impacts with stationary objects such as solid lane separators, tunnel emergency bays or bridge pillars. To address this shortcoming, the Project develops high-performance roadside safety barriers. A recently invented energy absorbing material, perlite-metal syntactic foam (P-MSF), will be optimized for kinetic energy absorption and integrated in these barrier systems.

More information can be found in the following media release: MR_TCL_announces_innovation_grant_recipients

On the mechanical properties of PLC–bioactive glass scaffolds fabricated via BioExtrusion

Our manuscript has been accepted in Materials Science and Engineering C 57 (2015) 288–293.

The paper addresses the mechanical characterization of polycaprolactone (PCL)–bioglass (FastOs®BG) composites
and scaffolds intended for use in tissue engineering. Tissue engineering scaffolds support the self-healing
mechanism of the human body and promote the regrowth of damaged tissue. These implants can dissolve
after successful tissue regeneration minimising the immune reaction and the need for revision surgery. However,
their mechanical properties should match surrounding tissue in order to avoid strain concentration and possible
separation at the interface. Therefore, an extensive experimental testing programme of this advanced material
using uni-axial compressive testing was conducted. Tests were performed at low strain rates corresponding to
quasi-static loading conditions. The initial elastic gradient, plateau stress and densification strain were obtained.
Tested specimens varied according to their average density and material composition. In total, four groups of
solid and robocast porous PCL samples containing 0, 20, 30, and 35% bioglass, respectively were tested. The addition
of bioglass was found to slightly decrease the initial elastic gradient and the plateau stress of the biomaterial
scaffolds.