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van Duin, Ron (author), Wiegmans, B. (author), Tavasszy, Lorant (author), Hendriks, B. (author), He, Y. (author)
Five years ago the project Cargo Hitching started with the goal to use the unused capacity of public transport passenger vehicles for freight and parcel transport. Like many new city logistics initiatives it is a difficult challenge to setup a profitable private business model. A rural pilot project was developed in the East of the Netherlands,...
conference paper 2018
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Nunez Vicencio, Alfredo (author), Popa, Tudor (author), Anghel, Lucian Emmanuel (author), Hendriks, J.M. (author), Moraal, J. (author), Buretea, Laurentiu Dorin (author), Paragreen, Jon (author), Miron, Berbece (author), Gheorghe, Draghici (author), Campean, Mihail (author), Dollevoet, R.P.B.J. (author), Li, Z. (author)
In this paper, we present preliminary results on the development of smart technology solutions for lower density railway lines. The goal is to reach a cost effective inspection and asset management to minimize maintenance
interventions time/cost without dedicated inspection vehicles. The proposed methods include axle box acceleration...
conference paper 2018
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Nunez Vicencio, Alfredo (author), Jamshidi, A. (author), Wang, H. (author), Hendriks, J.M. (author), Ramirez Fonseca, I. (author), Moraal, J. (author), Dollevoet, R.P.B.J. (author), Li, Z. (author)
In this paper, we propose a methodology based on signal processing and evolutionary multiobjective optimization to facilitate the maintenance decision making of infra-managers in regional railways. Using a train in operation (with passengers onboard), we capture the condition of the rails using Axle Box Acceleration measurements. Then, using...
conference paper 2018
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Nunez Vicencio, Alfredo (author), Hendriks, J.M. (author), Moraal, J. (author), Ramirez Fonseca, I. (author), Dollevoet, R.P.B.J. (author), Li, Z. (author)
In this paper we discuss rail condition monitoring based on axle box acceleration (ABA) measurements. We present three case studies. The first one in The Netherlands, the detection of local defects with different severity levels (squat A, squat B and squat C) is analysed. The second case from the Faurei testing ring in Romania, the detection of...
conference paper 2018
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Rajabzadehdizaji, Aydin (author), Hendriks, R.C. (author), Heusdens, R. (author), Groves, R.M. (author)
This paper describes a new method for the classification and identification of two major types of defects in composites, namely delamination and matrix cracks, by classification of the spectral features of fibre Bragg grating (FBG) signals. In aeronautical applications of composites, after a damage is detected, it is very useful to know the...
conference paper 2017
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Rajabzadehdizaji, Aydin (author), Groves, R.M. (author), Hendriks, R.C. (author), Heusdens, R. (author)
In this paper the behaviour of fibre Bragg grating (FBG) sensors under non-uniform strain distributions was analysed. Using the fundamental matrix approach, the length of the FBG sensor was discretised, with each segment undergoing different strain values. FBG sensors that are embedded inside composites, also undergo such non-uniform strain...
conference paper 2017
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Nunez Vicencio, Alfredo (author), Hendriks, J.M. (author), Li, Z. (author), Dollevoet, R.P.B.J. (author)
La industria ferroviaria a nivel mundial necesita de una gran cantidad de nuevos
profesionales, capaces de resolver los crecientes desafíos que este modo presenta. Siendo una industria por lo general conservadora, atraer a las y los mejores no es tarea fácil. En este resumen, se discuten algunos desafíos del mundo ferroviario y se presenta...
conference paper 2017
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van Kuyk, Steven (author), Kleijn, W.B. (author), Hendriks, R.C. (author)
Instrumental measures of speech intelligibility typically produce an index between 0 and 1 that is monotonically related to listening test scores. As such, these measures are dimensionless and do not represent physical quantities. In this paper, we propose a new instrumental intelligibility metric that describes speech intelligibility using bits...
conference paper 2016
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Zhang, J. (author), Hendriks, R.C. (author), Heusdens, R. (author)
Auto-localization in wireless acoustic sensor networks (WASNs) can be achieved by time-of-arrival (TOA) measurements between sensors and sources. Most existing approaches are centralized, and they require a fusion center to communicate with other nodes. In practice, WASN topologies are time-varying with nodes joining or leaving the network,...
conference paper 2016
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Koutrouvelis, A. (author), Hendriks, R.C. (author), Jensen, J (author), Heusdens, R. (author)
We propose a new multi-microphone noise reduction technique for binaural cue preservation of the desired source and the interferers. This method is based on the linearly constrained minimum variance (LCMV) framework, where the constraints are used for the binaural cue preservation of the desired source and of multiple interferers. In this...
conference paper 2016
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Khademi, S. (author), Hendriks, R.C. (author), Kleijn, W.B. (author)
The processing required for the global maximization of the intelligibility of speech acquired by multiple microphones and rendered by a single loudspeaker, is considered in this paper. The intelligibility is quantized, based on the mutual information rate between the message spoken by the talker and the message as interpreted by the listener. We...
conference paper 2016
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Shamsutdinova, G. (author), Hendriks, M.A.N. (author), Jacobsen, S. (author)
conference paper 2016
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Esposito, R. (author), Hendriks, M.A.N. (author)
The alkali-silica reaction (ASR) is a long-term deterioration process, which produces a hydrophilic and expansive gel causing damage. The ASR acts on concrete as an ageing phenomenon, modifying the material on the basis of its stress state. Focussing on the mechanical degradation of concrete, estimated trends for the mechanical properties in...
conference paper 2016
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Engen, Morten (author), Hendriks, M.A.N. (author), Øverli, Jan Arve (author), Åldstedt, Erik (author)
A fully triaxial material model for concrete was implemented in a commercial finite element code. The only required input parameter was the cylinder compressive strength. The material model was suitable for non-linear finite element analyses of large concrete structures. The importance of including a crack closure algorithm was demonstrated on a...
conference paper 2016
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Amini, J. (author), Hendriks, R.C. (author), Heusdens, R. (author), Guo, Meng (author), Jensen, Jesper Rindom (author)
Multi-microphone noise reduction algorithms in binaural hearing aids which cooperate through a wireless link have the potential to become of great importance in future hearing aid systems. However, limited transmission capacity of such devices necessitates the data compression of signals transmitted from one hearing aid to the contralateral one....
conference paper 2016
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Vidal Sarmiento, E. (author), Hendriks, M.A.N. (author), Geiker, M. R. (author), Kanstad, T. (author)
Most recent studies on fibre-reinforced self-compacting concrete agree on the impact of the casting conditions on the fibre orientation and distribution, and its consequence thereof on the structural performance. A substantial number of investigations are continuously contributing to gain experience on the use of flowable FRC for different...
conference paper 2016
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Van Dooren, M.M.M. (author), Visch, V.T. (author), Goossens, R.H.M. (author), Spijkerman, R. (author), Hendriks, V.M. (author)
Applying persuasive games in mental healthcare contexts, especially using game-elements to support and redesign therapy, is a relatively new concept. In the youth addiction care context, patients often have comorbidities, causing a lot of differences between them. Besides this, therapists apply the therapy protocol in a specific personal way,...
conference paper 2015
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De Boer, A. (author), Hendriks, M.A.N. (author), Van der Veen, C. (author), Belletti, B. (author)
conference paper 2015
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Endrullis, J. (author), Hansen, H.H. (author), Hendriks, D. (author), Polonsky, A. (author), Silva, A. (author)
conference paper 2015
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Shamsutdinova, G. (author), Rike, P.B. (author), Hendriks, M.A.N. (author), Jacobsen, S. (author)
The wear of concrete material due to ice movement is a challenge for offshore and coastal structures. Concrete surfaces exposed to moving ice are subjected to wear at various rates depending on concrete and ice properties. At NTNU, Department of Structural Engineering, concrete ice abrasion phenomena are studied both theoretically and...
conference paper 2015
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