A research team from the University of Newcastle has received A$650,000 in funding from the Australian Research Council (ARC) Linkage Project scheme to improve the understanding of the deterioration of ships and maritime structures. Professor Rob Melchers and his team of Professor Chong Min Song from UNSW Sydney and the two industrial partners – the Defence Science and Technology (DST) Group and Pacific Engineering Systems International (ESI) – were successful recipients of the scheme that is designed to join academic and industrial researchers to undertake new collaborations that will deliver tangible outcomes to Australia.

Professor Rob Melchers, University of Newcastle.

The team will develop a computer modelling system that simulates the deterioration of vessels that are subject to corrosion, fatigue and extreme ocean conditions. “In creating this simulation, we will have a better understanding of the lifespan of such vessels, which will help with decision making around potential economic, personnel and other risks involved for ship owners and operators, including the Royal Australian Navy,” said Melchers. “By better predicting the structural response of naval vessels and commercial maritime assets that are subjected to severe environments, this project has the potential for significant defence, commercial, economic and environmental benefits for Australia.”

Ship and maritime structures form an important component of Australia’s national infrastructure, supply-chain and defence interests. Examples include not only naval defence craft such as frigates, patrol boats and submarines but also offshore oil and gas production facilities.

“For all of these structures, the operational environment and the consequences of corrosion and fatigue are very important aspects for determining maintenance and life extension, both of which have significant economic and safety implications,” said Melchers.

Professor Chong Min Song from UNSW Sydney.

The team of structural engineers, hydrodynamicists, naval architects, fatigue specialist and corrosion specialist will use data records and the operational history of particular vessels, and use information such as weather bureau records (such as storm conditions), to analyse the effects of deterioration, and in particular corrosion on the welding, that such vessels face. By understanding the condition of a vessel, based on their operational history, the modelling will be able to determine the future lifespan of such a vessel.

“This will contribute to more optimal management of the structural integrity of defence vessels, and also to the safety, reliability and life-time economics of such vessels, offshore structures, and other maritime assets,” said Melchers.

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