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- Westerhof, T.A.T. (author), de Jong, B.C. (author), Verreault, J. (author), van den Heuvel, W. (author) conference paper 2019
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Rhijnsburger, M.P.M. (author), Verreault, J. (author)Close-in blast resistance of maritime composite structures was unknown, particularly for charges on the water surface. The hull of a mine clearing vessel is typically made from fiber reinforced composite material. One of the threats for this type of vessel consist of small charges detonating close to the hull. The last decade we studied failure...conference paper 2018
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de Jong, B.C. (author), Verreault, J. (author), van den Heuvel, W. (author)To simulate the dynamic response of occupants in a military vehicle subjected to a mine blast several systems are involved, such as the loading of the mine blast, the structural response of the vehicle and the motion response of the occupants. Furthermore special techniques are required for the coupling between the different systems, for example...conference paper 2018
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Longbottom, A. (author), Verreault, J. (author), Cargill, S. (author), Milne, A. (author)Many explosives are fuel rich and on detonation produce excess hydrocarbon species that may subsequently burn with oxygen in the surrounding air. This process is known as afterburning and takes place on relatively long timescales compared to detonation. An example is TNT which releases more than twice as much energy from afterburning as it does...conference paper 2018
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Verreault, J. (author), Leerdam, P.J.C. (author), Weerheijm, J. (author)The calibration of a user-defined blast model implemented in LS-DYNA is presented using full-scale test rig experiments, partly according to the NATO STANAG 4569 AEP-55 Volume 2 specifications where the charge weight varies between 6 kg and 10 kg and the burial depth is 100 mm and deeper. The model calibration is performed on the specific...conference paper 2016
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Verreault, J. (author), Roebroeks, G.H.J.J. (author), Weerheijm, J. (author)The development of new bottom concepts for military vehicles against mine blast threats involves the consideration of two main aspects: the bottom geometry and the material used. In order to reduce costs, experimental testing of new vehicle bottom concepts often requires small-scale setups together with numerical simulations to assist the design...conference paper 2016
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van der Voort, M.M. (author), van Wees, R.M.M. (author), Brouwer, S.D. (author), van der Jagt-Deutekom, M.J. (author), Verreault, J. (author)Forensic analysis of explosions consists of determining the point of origin, the explosive substance involved, and the charge mass. Within the EU fP7 project Hyperion, TNO developed the Inverse Explosion Analysis (TNO-IEA) tool to estïmate the charge mass and point of origin based on observed damage around an explosion. In this paper inverse...article 2015
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Verreault, J. (author), Day, J.P.R. (author), Halswijk, W.H.C. (author), Loiseau, J. (author), Huneault, J. (author), Higgins, A.J. (author), Devir, A.D. (author)Laboratory experiments of hypervelocity impacts on aluminum, nylon and high-explosive targets are presented. Spectral measurements of the impact flash are recorded, together with radiometric measurements to derive the temperature of the flash. Such experiments aim at demonstrating that the impact flash produced by a ballistic missile...article 2015
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van der Voort, M.M. (author), van Wees, R.M.M. (author), Brouwer, S.D. (author), van der Jagt-Deutekom, M.J. (author), Verreault, J. (author)Forensic analysis of explosions consists of determining the point of origin, the explosive substance involved, and the charge mass. Within the EU FP7 project Hyperion, TNO developed the Inverse Explosion Analysis (TNO-IEA) tool to estimate the charge mass and point of origin based on observed damage around an explosion. In this paper inverse...conference paper 2015
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van der Voort, M.M. (author), van Wees, R.M.M. (author), Brouwer, S.D. (author), van der Jagt-Deutekom, M.J. (author), Verreault, J. (author)Forensic analysis of explosions consists of determining the point of origin, the explosive substance involved, and the charge mass. Within the EU FP7 project Hyperion, TNO developed the Inverse Explosion Analysis (TNO-IEA) tool to estimate the charge mass and point of origin based on observed damage around an explosion. In this paper inverse...conference paper 2015
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Verreault, J. (author)The PELE ammunition is characterized by a low-density filling material surrounded by a high-density brittle jacket material. An analytical model describing the fragmentation of this ammunition behind a target plate is presented. This model assumes uniaxial strain in the filling and uses the RankingeHugoniot relations to calculate the material...article 2015
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Verreault, J. (author), van der Voort, M.M. (author)Multi-layered materials with alternating impedances as a mean to mitigate sympathetic detonation is considered in this investigation by studying the wave scattering and energy absorption phenomena. This is achieved using an analytical wave-tracking model that accounts for the different wave interactions within and at the interface of each layer....conference paper 2015
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Weerheijm, J. (author), van der Voort, M.M. (author), Verreault, J. (author), van den Berg, A.C. (author)Tunnel accidents with transports of combustible liquefied gases may lead to explosions. Depending on the substance involved this can be a Boiling Liquid Expanding Vapour Explosion (BLEVE), a Gas Expansion Explosion (GEE) or a gas explosion. Quantification of the risk of these scenarios is important to take informed decisions on tunnel design and...conference paper 2015
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Verreault, J. (author)The Penetrator with Enhanced Lateral Effect (PELE) is a type of explosive-free projectile that undergoes radial fragmentation upon an impact with a target plate. This type of projectile is composed of a brittle cylindrical shell (the jacket) filled in its core with a material characterized with a large Poisson's ratio. Upon an impact with a...conference paper 2014
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Verreault, J. (author), Higgins, A.J. (author), Stowe, R.A. (author)The structure of oblique detonation waves stabilized on a hypersonic wedge in mixtures characterized by a large activation energy is investigated via steady method of characteristics (MoC) calculations and unsteady computational flowfield simulations. The steady MoC solutions show that, after the transition from shock-induced combustion to an...conference paper 2013
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Verreault, J. (author), van Hinsberg, N.P. (author), Abadjieva, E. (author)An analytical model that describes the PELE fragmentation dynamics is presented and compared with experimental results from literature. The model accounts for strong shock effects and detailed interactions taking place between the filling – the inner core of the ammunition – and the target (including shock wave, expansion wave, free surface and...conference paper 2013
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- van der Voort, M.M. (author), van Wees, R.M.M. (author), van der Jagt-Deutekom, M.J. (author), Verreault, J. (author) conference paper 2013
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TNO Defensie en Veiligheid (author), Veraar, R.G. (author), Mayer, A.E.H.J. (author), Verreault, J. (author), Stowe, R.A. (author), Farinaccio, R. (author), Harris, P.G. (author)By injecting and mixing the fuel upstream of the combustor and initiating the combustion of the fuel-air mixture by a shock wave in the combustor, shock-induced combustion ramjets offer the potential to drastically reduce the length and mass of scramjet propulsion systems. Based on extensive numerical gas dynamic and thermo-mechanical analysis,...conference paper 2010
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Veraar, R.G. (author), Mayer, A.E.H.J. (author), Verreault, J. (author), Stowe, R.A. (author), Farinaccio, R. (author), Harris, P.G. (author), TNO Defensie en Veiligheid (author)By injecting and mixing the fuel upstream of the combustor and initiating the combustion of the fuel-air mixture by a shock wave in the combustor, shock-induced combustion ramjets offer the potential to drastically reduce the length and mass of scramjet propulsion systems. Based on extensive numerical gas dynamic and thermo-mechanical analysis,...conference paper 2009
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Verreault, J. (author), DeChamplain, A. (author), Mayer, A.E.H.J. (author), Veraar, R.G. (author), Stowe, R.A. (author), Farinaccio, R. (author), Harris, P.G. (author), TNO Defensie en Veiligheid (author)This work presents a design for a shock-induced combustion experiment using a two-angle cone configuration. Three injector geometries were considered: a cone surface, a dual stage configuration with rectangular gaps (DSRG) and a cylindrical ramp (CR). Four parameters were investigated: the penetration height, the mixing efficiency, the control...conference paper 2007