Infrastructure Engineering - Research Publications

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    Structural Health Monitoring of Bridges Using Advanced Non-destructive Testing Technique
    Maizuar, M ; Zhang, L ; Miramini, S ; Mendis, P ; Duffield, C ; Wang, CM ; Ho, JCM ; Kitipornchai, S (Springer, Singapore, 2020-01-01)
    This paper presents an integrated framework for structural health monitoring of bridges by using advanced non-destructive testing (NDT) technique in conjunction with computational modelling. First, the structural characteristics of the Eltham Trestle Bridge under train loading were monitored using the combination of the 3D optical measurement system and IBIS-S. The results demonstrate that, in conjunction with computational modelling, the NDT can capture the structural health conditions of the bridge by analysing the natural frequencies and deformation profiles of the critical members of the bridges. Then, the developed framework also takes into account the impact of extreme events (e.g. truck impacts and earthquakes) by using a reliability-based model. Finally, using the Montague Street Bridge as a case study, it shows that proposed framework has the capability of predicting the residual life of a bridge subject to both progressive deterioration and extreme events throughout its service life.
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    Automation in structural health monitoring of transport infrastructure
    Zhang, L ; Herath, N ; Raja, BNK ; Chen, S ; Miramini, S ; Duffield, C (Springer Singapore, 2021-01-01)
    Roads are among the most important assets in the world. Road structure improvements make a crucial contribution to economic development and growth and bring important social benefits. Automation in structural health monitoring allow the accurate prediction of ongoing damage caused by long-term traffic loading. This permits optimal road structure management and ensures the longevity and safety of road structures. This chapter discusses a variety of advanced automation techniques in structural health monitoring of road structures, such as data acquisition, data processing, and life-cycle assessment. It demonstrates that the implementation of automation in road asset management can increase the productivity and extend the service life of road structures, and enhance the durability of crucial road structures and increase transport infrastructure sustainability.
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    Foreword
    Duffield, C ; Hui, FKP ; Wilson, S ; Duffield, C ; Hui, FKP ; Wilson, S (Open Book Publishers, 2019-11-01)
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    Infrared Thermography for Detecting Subsurface Defects of Concrete Structures
    Khan Raja, BN ; Miramini, S ; Duffield, C ; Zhang, L ; Wang, CM ; Ming, C ; Kitipornchai, S (Springer Singapore, 2020-12-23)
    Delamination is one of the serious types of deterioration in reinforced concrete structures. It could cause concrete spalling, exposed steel bars, and ultimately affects the structural integrity of concrete structures. Infrared thermography (IRT) is a non-destructive technique which could potentially detect the delamination by capturing thermal contrast (∆T) on concrete surface caused by the heat flow disruption within the concrete due to subsurface anomalies. However, the optimum time and environmental conditions for IRT data collection are still unclear. In this study, an experimentally validated numerical model was developed to investigate the effect of a range of environmental conditions and defect characteristics on the IRT inspection outcomes. The results show that, under direct solar irradiation, the total heat flux input plays an important role in the development of thermal contrast ∆T instead of flux rate. Furthermore, delamination depth and size are two critical parameters that affect IRT results.
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    Potential Infrastructure Enhancements for Ports and Cities: Conclusions, Future Research and Policy Concepts
    Duffield, C ; Wahyuni, S ; Parikesit, D ; Hui, K ; Wilson, S ; Duffield, C ; Hui, K ; Wilson, S (Open Book Publishers, 2019)
    The final chapter of this research monograph draws together key points from each of the chapters. It summarises key findings from the research and poses questions that would benefit from future/further research.
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    Initial Investigation into the Effectiveness of Australian Ports’ Governance and Management Structures
    Al-Daghlas, H ; Hui, K ; Duffield, C ; Duffield, C ; Hui, K ; Wilson, S (Open Book Publishers, 2019)
    The ninth chapter considers effectiveness of port governance and management structures in Australia. It briefly reviews Australian port reform, before considering private, local and international investment in Australia; the make-up of investors in major city ports in Australia; and the need to carefully assess foreign investment in critical infrastructure. Asset recycling in Australia is discussed. Factors identified from focus group discussions (in Australia) with key port stakeholders that help improve or act as obstacles to governance/policy, and that help improve or hinder management structures in ports, are also presented.
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    Comparative Efficiency Analysis of Australian and Indonesian Ports
    Hui, K ; Duffield, C ; Chin, A ; Huang, H ; Duffield, C ; Hui, K ; Wilson, S (Open Book Publishers, 2019)
    A comparative analysis of Australian and Indonesian port efficiency is presented in the sixth chapter. The analysis utilises the Data Envelope Analysis model to quantify and measure the efficiency of ports, focusing on port and container cargoes. Ports included in the benchmarking included major Australian, Indonesian and Chinese international ports. International benchmarking of port facilities provides an opportunity to identify areas for improvement.
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    Funding and financing infrastructure: Indonesia and Australia
    Duffield, CF ; Duffield, R ; Wilson, S ; Duffield, C ; Hui, K ; Wilson, S (Open Book Publishers, 2019-11-18)
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    Infrastructure Planning, Challenges and Risks
    Duffield, C ; DUFFIELD, R ; Wilson, S ; Duffield, C ; Hui, K ; Wilson, S (Open Book Publishers, 2019)
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    Infrastructure investment in Indonesia - The economic context
    Duffield, CF ; Duffield, R ; Wilson, S ; Duffield, C ; Hui, K ; Wilson, S (Open Book Publishers, 2019-11-18)