Horizon 2020 Marie Skłodowska-Curie Innovative Training Network

Giulia Milana

BSc, MSc
Home/Giulia Milana
Giulia Milana 2017-07-06T16:16:28+00:00
Early Stage Researcher
Lloyd’s Register EMEA (United Kingdom)

Project 6: Residual life assessment and management of ship unloaders

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Research Interests:

Structural engineering; Steel structures; Finite element analysis; Structural analysis and design; Sustainability; Dynamic analysis

Biography:

Giulia Milana earned a Master’s degree in structural engineering from University of Rome ‘La Sapienza’ in 2014, with a thesis entitled ‘Sustainability concepts in the design of high-rise buildings: the case of diagrid systems’.

Following graduate studies, she did an internship with StroNGER S.r.l. focusing on sustainable structural schemes for high-rise steel buildings and in particular Finite Element Element Method models and robustness analysis.

At the same time she developed some aspects of her Thesis and elaborated on some research papers, presenting her work at some international conferences.

Before joining TRUSS ITN in September 2015, she had published 1 journal and 4 conference papers.

Research Outputs:

  • Milana, G., Olmati, P., Gkoumas, K. and Bontempi, F. (2015), “Ultimate capacity of diagrid systems for tall buildings in the nominal configuration and the damaged state”, Periodica Polytechnica Civil Engineering, paper 7795. http://dx.doi.org/10.3311/PPci.7795

Publications in TRUSS

This paper highlights the impact of dynamic amplification factors in remaining fatigue life assessment of ship unloaders. In practice, the widely accepted procedure for these structures is to carry out a fatigue life assessment envisages: (1) carrying out static analysis, (2) taking into account dynamics via the application of dynamic amplification factors, and (3) applying Miner’s rule. This factor, provided by the standard, is applied to the structure as a whole without considering the vibration of each structural member individually. This paper characterizes the dynamic behavior of each element using location-based dynamic amplification factors estimated from measurements. This caters for a more accurate assessment of the structure, whilst maintaining the simplicity of the standard procedure. 
This paper reviews methodologies for fatigue analysis with emphasis on ship unloaders. Maintaining the performance of ship unloaders at a satisfactory level is essential for any port’s operation in order to comply with the global demand of shipping and trading. Ship unloaders are subject to alternating operational loadings and to adverse environmental conditions, and as a result, they show a rapid rate of deterioration that makes them susceptible to failure by cumulative damage processes such as corrosion and fatigue. The purpose of this paper is to review key features of the most common methodologies for fatigue analysis and to underline the limitations and uncertainties involved. Finally, developments in reliability-based approaches are suggested for a more accurate fatigue assessment of ship unloaders. -> Link to full text in repository
This paper reviews the most common causes of failure in ship unloaders. The structural forms employed in the design of ship unloaders and the characteristics of the loads acting on these structures are introduced first. Then, typical failures including overloading, joint failure, cable breaking, corrosion and fatigue failure amongst others, are described. Fatigue failure is discussed in further detail. When assessing a ship unloader for fatigue, it is necessary to define the fatigue demand and the fatigue strength capacity of those structural details under investigation. The latter experiences stress cycles that accumulate over time until reaching a limit that leads to cracking. Loads and stresses need to be monitored to describe those cycles, and critical locations must be checked to prevent a catastrophic failure. -> Link to full text in repository