Searched for: author:"Benedictus, R."
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Viegas Ochôa De Carvalho, Pedro (author), Fernandez Villegas, I. (author), Groves, R.M. (author), Benedictus, R. (author)
Ultrasonic welding is a very promising technique for joining thermoplastic composite (TpC) components in aircraft primary structures [1, 2]. The potential introduction of new lightweight structures in civil aviation has been driving the change towards condition-based maintenance (CBM) as an alternative to the regular inspection interval approach...
abstract 2016
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Viegas Ochôa De Carvalho, Pedro (author), Groves, R.M. (author), Benedictus, R. (author)
Certification is the key step towards the implementation of structural health monitoring (SHM) as part of condition based maintenance programmes of aircraft fleets. That can only be accomplished by demonstration of system performance in multiple scenarios and in a statistically relevant way. This paper describes a fully computational approach...
conference paper 2017
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Koutras, N. (author), Fernandez Villegas, I. (author), Benedictus, R. (author)
In this work, the effect of temperature exposure on the strength of resistance welded joints is analysed. Glass fibre polyphenylene sulphide (GF/PPS) laminates were joined using the resistance welding technique and a stainless steel metal mesh as the heating element. Single lap shear tests at temperatures between 20°C and 150°C were performed to...
conference paper 2015
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Rans, C. (author), Alderdiesten, R. (author), Benedictus, R. (author), Khan, S. (author)
Presentation on conference
conference paper 2009
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Yao, L. (author), Alderliesten, R.C. (author), Benedictus, R. (author)
This paper provides a study on mode I fatigue delamination growth in composite laminates using energy principles. Experimental data has been obtained from fatigue tests conducted on Double Cantilever Beam (DCB) specimens at various stress ratios. A concept of fatigue fracture toughness is proposed to interpret the stress ratio effect in crack...
conference paper 2015
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Skandali, M. (author), Jansen, K.M.B. (author), Koussios, S. (author), Sinke, J. (author), Benedictus, R. (author)
The purpose of this study is to simulate the two-dimensional, transient and continuous heat transfer during the thermoset Automated Tape Laying (ATL) process. The heat transfer analysis is coupled with a cure kinetics model of the thermoset prepreg tapes used for the process. Unlike most studies, the process is modelled in a Lagrangian framework...
conference paper 2015
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Miesen, N. (author), Mizutani, Y. (author), Groves, R.M. (author), Sinke, J. (author), Benedictus, R. (author)
This paper demonstrates that existing Structural Health Monitoring (SHM) techniques have potential during the production phase in addition to their application for maintenance and for in-flight monitoring. Flaws occur during composite fabrication in industry, due to an imperfect process control and human errors. This decreases production...
conference paper 2011
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Alderdiesten, R. (author), Benedictus, R. (author), Khan, S. (author)
This paper presents various failure mechanisms in FMLs, highlights the presence or absence of interaction effects, and describes how the failure mechanisms can be described for predicting damage growth under arbitrary complex load spectra.
conference paper 2009
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Amaral, L. (author), Yao, L. (author), Alderliesten, R.C. (author), Benedictus, R. (author)
This work proposes to treat quasi-static mode I delamination growth of CFRP as a low-cycle fatigue process. To this end, mode I quasi-static and fatigue delamination tests were performed. An average physical Strain Energy Release Rate (SERR), derived from an energy balance, is used to characterize the energy released in crack extension. The...
conference paper 2015
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Zhao, T. (author), Palardy, G. (author), Rans, C.D. (author), Benedictus, R. (author)
Ultrasonic welding is a promising assembly technique for thermoplastic composites and it is well-suited for spot welding. In this paper, the in-plane and out-of-plane mechanical behaviour of ultrasonically spot-welded and mechanically fastened joints are investigated by double-lap shear and pull-through tests, respectively. Special attention was...
conference paper 2016
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Ruiz-Ripoll, M.L. (author), Schut, H. (author), Van Dijk, N.H. (author), Alderliesten, R.C. (author), Van der Zwaag, S. (author), Benedictus, R. (author)
We have investigated the evolution of damage during fatigue loading in Al–Cu 2024-T3 alloys using the positron annihilation Doppler Broadening (DB) technique. This technique enables us to monitor in a non destructive way, at the atomic and vacancy level, the formation of deformation defects and their interaction with solute atoms at selected...
conference paper 2011
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De Mooij, C. (author), Martinez, M. (author), Benedictus, R. (author)
Existing shape sensing methods use individual sensor types, determining either strain or displacement well, but not both. More accurate shape sensing could improve load estimation, necessary for accurate life assessment of the structure.
conference paper 2015
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Ruiz-Ripoll, M.L. (author), Schut, H. (author), Benedictus, R. (author), Van der Zwaag, S. (author), Alderliesten, R.C. (author)
conference paper 2011
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Ochoa, P. (author), Groves, R.M. (author), Benedictus, R. (author)
Ultrasonic Lamb wave techniques are described as one of the most encouraging developments for structural health monitoring of aerospace composite structures. The reliability of those techniques is highly dependent on the quality of signal processing algorithms capable of extracting useful information out of complex responses. When damage...
conference paper 2015
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Zhao, T. (author), Palardy, G. (author), Fernandez Villegas, I. (author), Benedictus, R. (author)
Ultrasonic welding is a promising assembly technique for thermoplastic composites and it is well-suited for spot welding. In this study, two typical welding process control strategies, i.e. displacement-controlled and energy-controlled welding, were selected to manufacture spot-welded joints. The influence of different boundary conditions,...
conference paper 2017
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Viegas Ochôa De Carvalho, Pedro (author), Groves, R.M. (author), Benedictus, R. (author)
This paper describes the test campaign of an ultrasonic guided wave (GW) based structural health monitoring system (SHM) deployed on a full-scale stiffened panel of a thermoplastic composite horizontal stabilizer torsion box. The diagnostic capabilities of the SHM system were successfully evaluated by testing barely-visible impact damage of...
conference paper 2018
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Tapeinos, I. (author), Rajabzadehdizaji, Aydin (author), Zarouchas, D. (author), Groves, R.M. (author), Koussios, S. (author), Benedictus, R. (author)
In the field of cryogenic storage, the medium inside the pressure vessel is in a liquid state and thus is incompressible. Therefore the storage tank should be designed in a way, that makes the best possible use of the available space within an aircraft. A composite-overwrapped pressure vessel (COPV) based on intersecting spheres (multi-sphere)...
conference paper 2018
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Lavalette, N.P. (author), Bergsma, O.K. (author), Zarouchas, D. (author), Benedictus, R. (author)
In the context of lightweight structure design for the transportation and robotics industries, new types of composite structures are being developed, in the form of trusses made of fiber-reinforced polymer composite members of small diameter. The main objective of this work is to study adhesive joints, bonding pultruded composite tubes inside...
conference paper 2018
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Ewald, V.A. (author), Goby, Xavier (author), Jansen, Hidde (author), Groves, R.M. (author), Benedictus, R. (author)
The near-term artificial intelligence, commonly referred as ‘weak AI’ in the last couple years was achieved thanks to the advances in machine learning (ML), particularly deep learning, which has currently the best in-class performance outperforming other machine learning algorithms. In the deep learning framework, many natural tasks such as...
conference paper 2018
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Celik, O. (author), Shroff, S. (author), Teuwen, J.J.E. (author), Bergsma, O.K. (author), Benedictus, R. (author)
Laser assisted automated tape or fiber placement (LATP/LAFP) with in-situ consolidation is a promising technique for manufacturing large structures, eliminating the limitations of autoclave curing. Currently, 2-D models are mostly preferred for the thermal analysis of the process. A 3-D, transient thermal finite element model is developed to...
conference paper 2018
Searched for: author:"Benedictus, R."
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