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Dhanisetty, V.S.V. (author), Verhagen, W.J.C. (author), Curran, R. (author)
This paper details the development of a decision-making model that evaluates the multiple repair levels that a composite structure can undergo, each with its inherent achievable survivability and consequence to operations in terms of availability, costs, and scheduling. The goal of this model is to provide the maintainer an integrated approach...
conference paper 2016
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Zhao, X. (author), Verhagen, W.J.C. (author), Curran, R. (author)
The present study develops a method for the sake of evaluating Disposal and Recycle (D&R) cost in view of the increasing demand in aircraft retirement. Firstly, a process model is extracted. The subordinated cost elements are also identified. Next, the cost aggregations based on the D&R process steps are discussed. Moreover, it proposes...
book chapter 2016
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Koornneef, H. (author), Verhagen, W.J.C. (author), Curran, R. (author)
Currently, task support information in aircraft maintenance is mostly provided using paper-based solutions, which are burdensome, slow and prone to error. Aircraft maintenance documentation contains vast amounts of information irrelevant for the task at hand and even for the simplest tasks multiple documents need to be consulted. Next to these...
book chapter 2016
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Le, H.T. (author), Verhagen, H.J. (author), Vrijling, J.K. (author)
Grass covers have been applied as an effective measure for protecting river levees and sea dikes. We conducted experiments to show how roots considerably improve the shear strength of soil on dike slopes. Roots of 1-year-old Bermuda and Carpet grass may increase the total shear strength of up to 20 kPa. Exposed to severe overtopping flow, dike...
journal article 2016
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Verhagen, H.J. (author)
For this book we have deliberately chosen that the text should follow a more or less logical design procedure for closure dams. It is emphasized that only the construction aspect of stopping the water movement is considered in this book. This means that only the closing operation itself is treated; the transformation of the closing dam into a...
lecture notes 2016
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Visser, H.G. (author), Lopes Dos Santos, Bruno F. (author), Verhagen, C.M.A. (author)
This paper describes the development of an optimization-based cooperative planning system for the efficient routing and scheduling of flight formations. This study considers the use of formation flight as a means to reduce the overall fuel consumption of civil aviation in long-haul operations. It elaborates on the operational implementation of...
conference paper 2016
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Van den Bos, J.P. (author), Verhagen, H.J. (author), Kuiper, C. (author)
This paper presents the results of a systematic validation of numerical simulation of reflection and transmission of rubble-mound breakwater structures. The aim of the study is to provide a body of validation measurements for increasingly complex situations, starting simple and building up the comlexity in terms of breawater geometry, wave...
conference paper 2015
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Salauddin, M. (author), Broere, A. (author), Van der Meer, J.W. (author), Verhagen, H.J. (author), Bijl, E. (author)
A new and symmetrical single layer armour unit, the crablock, has been designed in the UAE. One breakwater was reconstructed with crablock, but very limited testing had been performed. Just to become more acquainted with this new unit, pre-competitive research at a university has been performed, which is the subject of this paper. Being a new...
conference paper 2015
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Zhao, X. (author), Verhagen, W.J.C. (author), Curan, R. (author)
n an integrated aircraft design and analysis practice, Life Cycle Cost (LCC) is essential for decision making. The LCC of an aircraft is ordinarily partially estimated by emphasizing a specific cost type. However, an overview of the LCC including design and development cost, production cost, operating cost and disposal cost is not provided. This...
book chapter 2015
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Crum, S. (author), Van der Hoeven, M.L.E.B. (author), Krouwel, L.P.H.C. (author), Verhagen, H.J. (author)
Quantifying the penetration depth of a dragging anchor on a horizontal layer of rockfill provides the possibility to optimize the layer thickness of rockfill layers with a protective function. Current research on this subject is limited and is often aimed at anchor capacities in sand and clay. Penetration behaviour in rockfill is mainly...
conference paper 2015
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Verpoorten, S.P.K. (author), Ockeloen, W.J. (author), Verhagen, H.J. (author)
Since 1977 dedicated studies are made to the stability of rubble mound break-water toes under wave attack. A large number of stability methods is available, but prediction accuracy is low and validity ranges are too small for use in prac-tice. In this research the decoupled model approach is used to evaluate predic-tion capacity of existing toe...
conference paper 2015
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López Royo, M. (author), Burgmeijer, M. (author), Verhagen, H.J. (author)
Sectoral professionals, like coastal engineers, need to know how to cooperate in a multi-disciplinary environment, as well as how to present substantial information to (political) decision makers. In order to train (coastal engineering) students in this matter, Unesco-IHE and TU Delft have in their curriculum an Integrated Coastal Zone...
conference paper 2015
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Mulder, B. (author), La Rocca, G. (author), Schut, J. (author), Verhagen, W.J.C. (author)
A short lead time of the Product Development Process (PDP) is an important competitive advantage for companies. Design automation solutions provide a means to reduce the lead time and improve quality, but their development requires some investment. Before a company can commit to the development of an automation initiative, it requires an...
conference paper 2015
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Schouten, P.C. (author), Grigoriadis, A. (author), Kuilman, T. (author), Mirza, H. (author), Watkins, J.A. (author), Cooke, S.A. (author), Van Dyk, E. (author), Severson, T.M. (author), Rueda, O.M. (author), Hoogstraat, M. (author), Verhagen, C. (author), Natrajan, R. (author), Chin, S.F. (author), Lips, E.H. (author), Kruizinga, J. (author), Velds, A. (author), Nieuwland, M. (author), Kerkhoven, R.M. (author), Krijgsman, O. (author), Vens, C. (author), Peeper, D. (author), Nederlof, P.M. (author), Caldas, C. (author), Tutt, A.N. (author), Wessels, L.F.A. (author), Linn, S.C. (author)
Breast cancers with BRCA1 germline mutation have a characteristic DNA copy number (CN) pattern. We developed a test that assigns CN profiles to be ‘BRCA1-like’ or ‘non-BRCA1-like’, which refers to resembling a BRCA1-mutated tumor or resembling a tumor without a BRCA1 mutation, respectively. Approximately one third of the BRCA1-like breast...
journal article 2015
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Stjepandic, J (author), Verhagen, W.J.C. (author), Wognum, P.M. (author)
CE has been used for more than two decades now. Despite many successes and advantages, there are still many challenges to be addressed. These challenges are both technical and organisational. In the paper we will address the current challenges of CE. Many challenges are related to the exchange of data and...
conference paper 2015
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Blom, E.M. (author), Burg, E. (author), Verhagen, P. (author), Hillen, M. (author)
conference paper 2014
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Trung, L.H. (author), Van der Meer, J.W. (author), Verhagen, H.J. (author)
Little is known about the strength of the land-side slopes of the Vietnamese sea dikes under overtopping attack. Some grass-covered slopes were tested by a wave overtopping simulator. The paper describes the simulator and presents the test results. The tested grass covers could withstand overtopping rates varying from 20 l/s to 100 l/s per meter...
journal article 2014
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Verhagen, H.J. (author)
In physical model tests there is often a need of preventing stones from moving. This can be achieved by gluing the stones. Applying PBA (Polyurethane Bonded Agregate, e.g. Elastocoast) guarantees no moving stones, a normal permeability and a transportable model.
conference paper 2014
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Hai, T.L. (author), Verhagen, H.J. (author)
Many dike failures have been ignited by damage due to erosion on the landward slopes. This paper investigates how grass covered slopes perform when being attacked by overtopping flow during storm surges. Based on observations during a number of simulator tests, damage is classified into three types 'head-cut', 'roll-up' and 'collapse' depending...
conference paper 2014
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Van den Bos, J. (author), Verhagen, H.J. (author), Zijlema, M. (author), Mellink, B. (author)
A more detailed understanding of porous flow inside a rubble-mound structure may have potential benefits in breakwater design. Numerical models are expected to be a useful additional research tool in this field, provided that their calculation results can be validated against measurements. This paper presents the results of a systematic effort...
conference paper 2014
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