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Methodology to determine skull bone and brain responses from ballistic helmet-to-head contact loading using experiments and finite element analysis

Pintar, F.A. (author), Philippens, M.M.G.M. (author), Zhang, J. (author), Yoganandan, N. (author)

The objective of the study was to obtain helmet-to-head contact forces from experiments, use a human head finite element model to determine regional responses, and compare outputs to skull fracture and brain injury thresholds. Tests were conducted using two types of helmets (A and B) fitted to a head-form. Seven load cells were used on the head...

article 2013

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Drop weight impact strengths of porous concretes investigated with a measurement technique using laser doppler velocimetry

Ozbek, A.S.A. (author), Weerheijm, J. (author), Schlangen, E. (author), van Breugel, K. (author)

Porous concrete is used in many applications that require permeability, noise absorption or thermal insulation. However, its response under dynamic loading is generally not considered. Porous concrete has a characteristic of forming multiple cracks and subsequently fracturing into small fragments when exposed to impact loading. Therefore, with...

conference paper 2013

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An impulsive input approach to short time convergent control for linear systems

Weiss, M. (author), Shtessel, Y. (author)

The paper considers the problem of bringing the state of a controllable linear system to the origin in a very short time. It takes the approach of considering an “ideal” control input consisting of a linear combination of the Dirac delta function and its derivatives that realizes this goal instantaneously. Three schemes are introduced to...

bookPart 2013

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Influence of solid-state microstructure on the electronic performance of 5,11-Bis(triethylsilylethynyl) anthradithiophene

Yu, L. (author), Li, X. (author), Pavlica, E. (author), Koch, F.P.V. (author), Portale, G. (author), Da Silva, I. (author), Loth, M.A. (author), Anthony, J.E. (author), Smith, P. (author), Bratina, G. (author), Kjellander, B.K.C. (author), Bastiaansen, C.W.M. (author), Broer, D.J. (author), Gelinck, G.H. (author), Stingelin, N. (author)

The rich phase behavior of 5,11-bis(triethylsilylethynyl) anthradithiophene (TES ADT) - one of the most promising, solution-processable small-molecular organic semiconductors - is analyzed, revealing the highest performing polymorph among four solid-state phases, opening pathways toward the reliable fabrication of high-performance bottom-gate...

article 2013

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A new concept for spatially-divided Reactive Ion Etching with ALD-based passivation

Roozeboom, F. (author), Kniknie, B. (author), Lankhorst, A.M. (author), Winands, G. (author), Knaapen, R. (author), Smets, M. (author), Poodt, P. (author), Dingemans, G. (author), Keuning, W. (author), Kessels, W.M.M. (author)

article 2013

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Multi-scale modelling of damage and fracture

Coenen, E.W.C. (author), Kouznetsova, V.G. (author), Geers, M.G.D. (author)

Recently, a novel multi-scale modelling approach for damage and fracture problems was presented. This method departs from classical computational homogenization (FE2) and evolves to a discontinuity enriched scheme upon the localization detection. Rotating boundary conditions allow for microscale localization bands to develop. The formulation of...

conference paper 2013

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Dynamic characterization of bi-material cantilevers

Bijster, R.J.F. (author), de Vreugd, J. (author), Sadeghian Marnani, H. (author)

In this paper, an experimental-theoretical method is proposed to accurately determine the thermal diffusivity, characteristic time constant and layer thicknesses of a bimaterial cantilever using a transient, non-destructive and noncontact measurement. The technique is based on the wellknown optical beam deflection method. A time dependent,...

conference paper 2013

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Silicon Compatible Materials, Processes, and Technologies for Advanced Integrated Circuits and Emerging Applications 3: Preface

Roozeboom, F. (author), Narayanan, V. (author), Kakushima, K. (author), Iwai, H. (author), Kwong, D.L. (author), Timans, P.J. (author), Gusev, E.P. (author)

conference paper 2013

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Characterization of intermetallic compounds in Cu-Al ball bonds: Mechanical properties, interface delamination and thermal conductivity

Kouters, M.H.M. (author), Gubbels, G.H.M. (author), Dos Santos Ferreira, O. (author)

article 2013

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Device reflectivity as a simple rule for predicting the suitability of scattering foils for improved OLED light extraction

Levell, J.W. (author), Harkema, S. (author), Pendyala, R.K. (author), Rensing, P.A. (author), Senes, A. (author), Bollen, D. (author), MacKerron, D. (author), Wilson, J.S. (author)

A general challenge in Organic Light Emitting Diodes (OLEDs) is to extract the light efficiently from waveguided modes within the device structure. This can be accomplished by applying an additional scattering layer to the substrate which results in outcoupling increases between 0% to <100% in external quantum efficiency. In this work, we aim to...

conference paper 2013

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Planar, monolithically integrated coil

Roozeboom, F. (author), Reefman, D. (author), Klootwijk, J.H. (author), Tiemeijer, L.F. (author), Ruigrok, J. (author)

The present invention provides a means to integrate planar coils on silicon, while providing a high inductance. This high inductance is achieved through a special back- and front sided shielding of a material. In many applications, high-value inductors are a necessity. In particular, this holds for applications in power management. In these...

patent 2013

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Modified hydrotalcites as a new emerging class of smart additive of reinforced concrete for anticorrosion applications: A literature review

Yang, Z. (author), Fischer, H.R. (author), Polder, R.B. (author)

Modified hydrotalcites (MTHs) represent a group of technologically promising materials for addition to concrete to improve its durability in aggressive environment, owing to their low cost, relative simplicity of preparation, and plenty of unique composition variables that may be adopted. Up to date, a lot of academic work and commercial...

article 2013

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UHF electromagnetic structures inkjet printed on temperature sensitive substrates: A comparative study of conductive inks and sintering methods to enable low cost manufacture

Sanchez-Romaauera, V. (author), Wünscher, S. (author), Abbel, R.J. (author), Zial, M.A. (author), Oyeka, D. (author), Turki, B.M.M. (author), Batchelor, J.C. (author), Parker, E.A. (author), Schubert, U.S. (author), Yeates, S.G. (author)

In this paper we demonstrate the use of inkjet printing as a facile digital fabrication tool for the cost effective manufacture of UHF RFID transfer tattoo tags and Frequency Selective Surfaces on low-cost flexible and porous substrates. Electrical and morphological properties of conductive features obtained from a range of metal nanoparticle...

conference paper 2013

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Room temperature sensing of O2 and CO by atomic layer deposition prepared ZnO films coated with Pt nanoparticles

Erkens, I.J.M. (author), Blauw, M.A. (author), Verheijen, M.A. (author), Roozeboom, F. (author), Kessels, W.M.M. (author)

Ultralow-power gas sensing devices need to operate without an energy consuming heater element. This requires the design of sensing devices that are so efficient that they can operate at room temperature (RT). Here, we report on the RT sensing performance of atomic layer deposition (ALD) prepared i-ZnO and Al-doped ZnO sensing devices. The...

article 2013

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Experimental demonstration of a model-based control design and calibration method for cost optimal euro-VI engine-aftertreatment operation

Mentink, P.R. (author), Willems, F.P.T. (author), Kupper, F. (author), van den Eijnden, E.A.C. (author)

This paper presents a model-based control and calibration design method for online cost-based optimization of engine-aftertreatment operation under all operating conditions. The so-called Integrated Emission Management (IEM) strategy online minimizes the fuel and AbBlue consumption. Based on the actual state of engine and aftertreatment systems,...

conference paper 2013

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Design methodologies for reliability of SSL LED boards

Jakovenko, J. (author), Formánek, J. (author), Perpiñà, X. (author), Jorda, X. (author), Vellvehi, M. (author), Werkhoven, R.J. (author), Husák, M. (author), Kunen, J.M.G. (author), Bancken, P. (author), Bolt, P.J. (author), Gasse, A. (author)

This work presents a comparison of various LED board technologies from thermal, mechanical and reliability point of view provided by an accurate 3-D modelling. LED boards are proposed as a possible technology replacement of FR4 LED boards used in 400 lumen retrofit SSL lamps. Presented design methodology can be used for other high power SSL lamp...

article 2013

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Atmospheric pressure chemical vapor deposition of ZnO: Process modeling and experiments

van Deelen, J. (author), Illiberi, A. (author), Kniknie, B. (author), Beckers, E.H.A. (author), Simons, P.J.P.M. (author), Lankhorst, A. (author)

The deposition of zinc oxide has been performed by atmospheric pressure chemical vapor deposition and trends in growth rates are compared with the literature. Diethylzinc and tertiary butanol were used as the primary reactants and deposition rates above 800 nm/minwere obtained. The reaction kineticswere studied and detailed process modeling...

article 2013

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RFID tags for cryogenic applications: Xxperimental and numerical analysis of thermo-mechanical behaviour

Cauchois, R. (author), Yin, M.S. (author), Gouantes, A. (author), Boddaert, X. (author)

RFID solutions will improve the traceability of biological samples stored at low temperature (77 K) in biobanks. To achieve this goal, the reliability of RFID tags is essential. In this paper, we focus on the reliability aspect of RFID tags in harsh environment and more specifically to assembly design optimization through numerical simulations...

article 2013

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Quasi-one dimensional in-plane conductivity in filamentary films of PEDOT:PSS

van de Ruit, K. (author), Cohen, R.I. (author), Bollen, D. (author), van Mol, T. (author), Yerushalmi-Rozen, R. (author), Janssen, R.A.J. (author), Kemerink, M. (author)

The mechanism and magnitude of the in-plane conductivity of poly(3,4-ethy-lenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) thin films is determined using temperature dependent conductivity measurements for various PEDOT:PSS weight ratios with and without a high boiling solvent (HBS). Without the HBS the in-plane conductivity of PEDOT:PSS...

article 2013

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Systematic characterization of key parameters of hermetic wafer-level Cu-Sn SLID bonding

van de Wiel, H.J. (author), Vardøy, A.S.B. (author), Hayes, G. (author), Kouters, M.H.M. (author), van der Waal, A. (author), Erinc, M. (author), Lapadatu, A. (author), Martinsen, S. (author), Taklo, M.M.V. (author), Fischer, H.R. (author)

Hermetic wafer-level encapsulation of atmosphere sensitive Micro-Electric-Mechanical Systems (MEMS) devices is vital to achieve a high yield, a high performance and a long operating lifetime. An interesting and gradually more employed packaging technique is flux-less wafer-level copper-tin (Cu-Sn) solid-liquid interdiffusion (SLID) bonding. The...

conference paper 2013