Papers by Author: Matthew E. Ibrahim

Abstract: This paper overviews some recent S&T innovations in smart materials and structures at the Australian Defence Science and Technology Organisation (DSTO) under a Corporate Enabling Research Program (CERP) on Signatures, Materials and Energy. The CERP program includes development and transitioning of technology across the maritime, air and land domains, with the major focus of the smart materials program component being to increase the safety, availability and maintainability of Defence assets. Three specific examples are provided of the smart materials and structures program, ranging across the spectrum of technology readiness from new concept phase to technology transitioning, viz.: (i) Advances in smart sensing for prognostics-based platform management; (ii) Fabrication of nanostructured and ultrafine grained materials through top-down severe plastic deformation processing of bulk materials; (iii) Innovative application of carbon nanotubes/conducting polymers as artificial muscles for low-power propulsion and control of small autonomous underwater systems. In each case, the DSTO effort is underpinned by strong university or industry linkages to deliver challenging interdisciplinary S&T.

Abstract: The Australian Defence Science and Technology Organisation (DSTO) has established a leading-edge program to enable the development and transitioning of innovative Smart Materials and Structures technology across the spectrum from fundamental science to use in the field. This program extends and harnesses technology in the area of Smart Materials, Sensors and Systems, in order to increase safety of Defence aircraft, ships, submarines and vehicles, increase availability, reduce the cost of asset ownership and operations, and enhance overall military capability. The program has linkages into broad networks, with strong university and industry relationships, and is also very relevant to the management of civil infrastructure and other equipment. We present here an overview of some key research areas within the DSTO Smart Materials and Structures Initiative, highlighting developments in : (i) Smart Materials, including environmentallyfriendly coatings that exhibit properties of greater flexibility and durability for aerospace applications, nano-crystalline coatings that provide increased wear resistance, and Defence applications for carbon nanotubes; (ii) Smart Sensing, including chemical, structural fatigue, fuel contamination, environmental degradation, corrosion and its precursors, and overheating and mechanical wear; and (iii) Smart Systems that employ innovative techniques to acquire and process data from a range of sensors by harvesting energy from local structures to power microelectronic circuits.