Searched for: subject:"Mechanical%5C+properties"
(1 - 20 of 56)

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Bex, G.J.P. (author), Ingenhut, B.L.J. (author), ten Cate, T. (author), Sezen, M. (author), Ozkoc, G. (author)
The use of recycled polymers in 3D printing technologies has recently become a promising research topic because of the global concerns on plastic waste pollution and an increase in awareness of sustainability and circularity. In order to unlock the potentials of 3D printing beyond prototyping purposes, continuous fiber-embedded fused filament...
article 2021
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van der Heiden, M.S. (author), Harmsma, P.J. (author), Altmann, R.K. (author), Lucas, P. (author), Thuaire, A. (author), Papanastasiou, D. (author), Favero, I. (author), Sbarra, S. (author), Tamayo, J. (author)
Measuring the nano-mechanical properties of viruses opens a new route to identify viruses and to assess their infectiveness. Current targeted techniques, like PCR, are only suitable for confirmation and have a high false positive rate due to cross contamination and DNA strands presents in the blood sample after former infection. The...
other 2019
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TerHeege, J.H. (author), Wollenweber, J. (author), Naumann, M. (author), Pipilikaki, P. (author), Vercauteren, F. (author)
Wells used for steam-assisted gravity drainage (SAGD), for cyclic steam stimulation (CSS), for hydrocarbon production in areas with anomalous high geothermal gradient, or for geothermal energy extraction all are operated in high temperature environments where maintaining long term wellbore integrity is one of the key challenges. Changes in...
conference paper 2019
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Fu, W. (author), Landman, H.M. (author), van Paassen, M.M. (author), Mulder, M. (author)
We discuss an extension of the basic principles underlying the human haptic just noticeable difference (JND) in perceiving a manipulator's mechanical properties from force feedback. Two cases are studied: 1) the JND in perceiving the stiffness of manipulators with various masses; 2) the JND in perceiving the damping of a combined mass-spring...
article 2018
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van den Berg, F.D. (author), Kok, P.J.J. (author), Yang, H. (author), Aarnts, M.P. (author), Meilland, P. (author), Kebe, T. (author), Stolzenberg, M. (author), Krix, D. (author), Zhu, W. (author), Peyton, A.J. (author), Martinez-De-Guerenu, A. (author), Gutierrez, I. (author), Jorge-Badiola, D. (author), Malmström, M. (author), Volker, A.W.F. (author), Duijster, A.J. (author), Wirdelius, H. (author), Boström, A. (author), Mocci, C. (author), Vannucci, M. (author), Colla, V. (author), Davis, C. (author), Zhou, L. (author), Schmidt, R. (author), Labbé, S. (author), Reboud, C. (author), Skarlatos, A. (author), Leconte, V. (author), Lombard, P. (author)
In steel manufacturing, the conventional method to determine the mechanical properties and microstructure is by offline, destructive (lab-)characterisation of sample material that is typically taken from the head or the tail of the coil. Since coils can be up to 7 km long, the samples are not always representative for the main coil body. Also,...
conference paper 2018
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Hofland, E.C. (author), Baran, I. (author), Wismeijer, D.A. (author)
Selective laser sintering (SLS) is an additive manufacturing technique that enables the production of customized, complex products. SLS has proven itself a viable prototyping tool and production method for noncritical products. The industry has picked up on the potential of SLS, which raised the question whether it is possible to produce...
article 2017
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Fan, J.T. (author), Weerheijm, J. (author), Sluys, L.J. (author)
Multiple-particles-polymer systems of a polyurethane elastomeric matrix embedding 25wt.% and 50wt.% 0.5 mm-diameter PMMA particles were investigated using a split Hopkinson pressure bar (SHPB) setup for revealing the dynamic compressive mechanical response. Taking the 25wt.%-particles-polymer system as a reference case, the characteristics of...
article 2016
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van Ramshorst, M.C.J. (author), di Benedetto, G.L. (author), Duvalois, W. (author), Hooijmeijer, P.A. (author), van der Heijden, A.E.D.M. (author)
The failure mechanism of a propellant consisting of hydroxyl terminated poly-butadiene filled with ammonium perchlorate and aluminum (HTPB/AP/Al) was determined by performing in-situ uniaxial tensile tests in a scanning electron microscope (SEM). The experimental test plan contained uniaxial tensile test experiments performed at room temperature...
article 2016
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Carton, E.P. (author), Roebroeks, G.H.J.J. (author), Weerheijm, J. (author), Diederen, A.M. (author), Kwint, M.E. (author)
Several specially designed experimental techniques including an alternative test method have been developed for the evaluation of ceramic based armor. Armor grade ceramics and a range of combined materials have been tested using 7.62 AP rounds. Using the energy method [12] the dwell-time and total energy absorbed from the AP core were determined...
conference paper 2016
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Fan, J.T. (author), Weerheijm, J. (author), Sluys, L.J. (author)
The dynamic mechanical behaviour of a soft polymer material (Clear Flex 75) was studied using a split Hopkinson pressure bar (SHPB) apparatus. Mechanical properties have been determined at moderate to high strain rates. Real time deformation and fracture were recorded using a high-speed camera. Fracture micrographs were examined to explore the...
article 2015
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Fan, J.T. (author), Weerheijm, J. (author), Sluys, L.J. (author)
The dynamic tensile mechanical response of a soft polymer material (Clear Flex 75) is investigated using a split Hopkinson tension bar (SHTB). Stress-strain relations are derived to reveal the mechanical properties at moderate and high strain rates. These relations appear to be rate dependent. Under static loading, the polymer exhibits an...
article 2015
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di Benedetto, G.L. (author), van Ramshorst, M.C.J. (author), Duvalois, W. (author), Hooijmeijer, P.A. (author), van der Heijden, A.E.D.M. (author), de Klerk, W.P.C. (author)
A tensile module system placed within a FEI NovaNanoSEM 650 Scanning Electron Microscope (SEM) was utilized in this work to conduct in-situ tensile testing of propellant material samples. This tensile module system allows for real-time in-situ SEM analysis of the samples to determine the failure mechanism of the propellant material under tensile...
conference paper 2015
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Fan, J.T. (author), Weerheijm, J. (author), Sluys, L.J. (author)
The glass interface effect on dynamic tensile response of a soft polyurethane elastomeric polymer material has been investigated by subjecting a glass-polymer system of this polymer material matrix embedded a single 3 mm-diameter glass particle to impact loading in a split Hopkinson tension bar (SHTB) setup. The characteristics of the dynamic...
article 2015
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Visser, J.H.M. (author), Couto, S. (author), Gupta, A. (author), Alvarez, I.L. (author), Ligero, V.C. (author), Mayor, T.S. (author), Vinai, R. (author), Pipilikaki, P. (author), Largo, A. (author), Attanasio, A. (author), Huang, M.C. (author), Soutsos, M. (author)
Producing concrete with secondary raw materials is an excellent way to contribute to a more
article 2015
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Carton, E.P. (author), Roebroeks, G.H.J.J. (author), Broos, J.P.F. (author), Halls, V. (author), Zheng, J. (author)
In order use material models in (numerical) calculations, the mechanical properties of all materials involved should be known. At TNO an indirect method to determine the dynamic flow stress of materials has been generated by a combination of ballistic penetration tests with an energy-based engineering model. For visco-elasto-plastic materials,...
conference paper 2014
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van den Ende, D.A. (author), Gubbels, G.H.M. (author)
In many optical and precision engineering applications, low thermal distortion materials need to be bonded together reliably. Since high temperature bonding process ultimately introduce stresses in the bond, rendering it dimensionally instable, room temperature or near room temperature processes are preferred. Low thermal distortion materials...
article 2014
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James, N.K. (author), Lafont, U. (author), van der Zwaag, S. (author), Groen, W.A. (author)
Piezoelectric ceramic-polymer composites with 0-3 connectivity were fabricated using lead zirconium titanate (PZT) powder dispersed in an ionomer (Zn ionomer) and its reference ethylene methacrylic acid copolymer (EMAA) polymer matrix. The PZT-Zn ionomer and PZT-EMAA composites were prepared by melt extrusion followed by hot pressing. The...
article 2014
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Visser, J.H.M. (author), Bigaj, A.J. (author)
In order not to hampers innovations, the Dutch National Building Regulations (NBR), allow an alternative approval route for new building materials. It is based on the principles of equivalent performance which states that if the solution proposed can be proven to have the same level of safety, protection of health, energy efficiency and...
conference paper 2014
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James, N.K. (author), van den Ende, D.A. (author), Lafont, U. (author), van der Zwaag, S. (author), Groen, W.A. (author)
Structured lead zirconium titanate (PZT)-epoxy composites are prepared by dielectrophoresis. The piezoelectric and dielectric properties of the composites as a function of PZT volume fraction are investigated and compared with the corresponding unstructured composites. The effect of poling voltage on piezoelectric properties of the composites is...
article 2013
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Grossiord, N. (author), Kroon, J.M. (author), Andriessen, H.A.J.M. (author), Blom, P.W.M. (author)
In the present review, the main degradation mechanisms occurring in the different layer stacking (i.e. photoactive layer, electrode, encapsulation film, interconnection) of polymeric organic solar cells and modules are discussed. Bulk and interfacial, as well as chemical and physical degradation mechanisms are reviewed, as well as their...
article 2012
Searched for: subject:"Mechanical%5C+properties"
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