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Section B, Creep, damage processes and transformations: B.1. Deformation and damage processes in wood

Van der Put, T.A.C.M. (author)

journal article 2015

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Section B, Creep, damage processes and transformations: B.2. Transformations of wood and wood-like polymers

Van der Put, T.A.C.M. (author)

journal article 2015

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Exact failure criterion of wood: Theory extension and synthesis of all series A publications

Van der Put, T.A.C.M. (author)

journal article 2015

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Exact and complete fracture mechanics of wood: Theory extension and synthesis of all series C publications

Van der Put, T.A.C.M. (author)

journal article 2015

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Micromechanical study of the interface properties in concrete repair systems

Lukovic, M. (author), Savija, B. (author), Dong, H. (author), Schlangen, E. (author), Ye, G. (author)

journal article 2014

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Time-of-flight modeling of transversal ultrasonic scan of wood

Yaitskova, N. (author), Van de Kuilen, J.W.G. (author)

Time-of-flight is a time for an ultrasonic pulse to cross a sample. It contains valuable information about the mechanical properties of a material. For the ultrasonic pulse propagating in wood perpendicular to the grain the relation between the time-of-flight and the elastic constants is rather complex due to the strong anisotropicity of wood....

journal article 2014

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Activated Carbon as a Pseudo-reference Electrode for Potentiometric Sensing Inside Concrete

Abbas, Y. (author), Pargar, F. (author), Olthuis, W. (author), Van den Berg, A. (author)

The half-cell potential of the Activated carbon (AC), due to its high double layer capacitance (EDL), remains stable in high ionic electrolyte. The open circuit potential (OCV) of the AC, with EDL of 40 – 50 F, shows a stable potential (10 mV variation) over two weeks in the cement pore solution (sat. Ca(OH)2). The OCV is less sensitive to the...

journal article 2014

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Chloride ingress in cracked concrete: A laser induced breakdown spectroscopy (LIBS) study

Savija, B. (author), Schlangen, E. (author), Pacheco Farias, J. (author), Millar, S. (author), Eichler, T. (author), Wilsch, G. (author)

racks are always present in reinforced concrete structures. In the presented research, influence of mechanical cracks on chloride ingress is studied. A compact reinforced concrete specimen was designed, mimicking the cracking behaviour of beam elements. Cracks of different widths were induced by means of mechanical loading. These cracked...

journal article 2014

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Limit analysis discussion of design methods for fracture of timber dowel joints loaded perpendicular to grain

Van der Put, T.A.C.M. (author)

The results of an investigation of splitting of joints of [1] are used for a discussion of design methods and as necessary answer on comments and for confirmation of the extended fracture mechanics theory which accounts for the part of the external energy which is needed for plastic dissipation at the dowels, (which cause the crack opening). It...

journal article 2014

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Exact derivation of the geometric correction factor of the center notched test specimen, based on small cracks merging as explanation of softening

Van der Put, T.A.C.M. (author)

The exact derivation of the mode I geometric correction factor is given, based on the small crack merging mechanism to show that this always is the real fracture mechanism in wood. This mechanism dominates at late softening and explains fully the apparent decrease of the energy release rate of macrocrack extension as already known for mode I and...

journal article 2014

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Developing A Priority-Based Decision Making Mod To Evaluate Geometric Configuration Of Urban Interchanges

Naeimi, M. (author), Alimoradi, Z. (author), Razi, M. (author), Monajjem, S. (author)

The present article involves in evaluation and engineering judgment of various geometric configurations for highway interchanges by considering substantial parameters over the discretion process. The geometric, economical and architectural criteria as the fundamental indicators are divided into related sub-indicators and the total combinations...

journal article 2014

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Reliability analysis of idealized tunnel support system using probability-based methods with case studies

Gharouni-Nik, M. (author), Naeimi, M. (author), Ahadi, S. (author), Alimoradi, Z. (author)

In order to determine the overall safety of a tunnel support lining, a reliability-based approach is presented in this paper. Support elements in jointed rock tunnels are provided to control the ground movement caused by stress redistribution during the tunnel drive. Main support elements contribute to stability of the tunnel structure are...

journal article 2014

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Vortex-induced vibration of a slender single-span cylinder

Oikou, N. (author)

The goal of this paper is to study the vortex-induced vibration of slender cylindrical structures. For this purpose, a 2D model that calculates the coupled cross-flow and in-line vibrations of a flexible single span beam is developed. A wake oscillator known to match well with free vibration experiments on rigid elastically mounted cylinders is...

journal article 2014

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The Influence of Air Void Content on Moisture Damage Susceptibility of Asphalt Mixtures: A Computational Study

Varveri, A. (author), Avgerinopoulos, S. (author), Kasbergen, C. (author), Scarpas, T. (author), Collop, A. (author)

Because of the difficulties associated with the generation of finite element meshes based on X-ray computed tomography scans and with the extraordinary computational demands in performing three-dimensional (3-D) finite element analyses, past modeling efforts have focused primarily on two-dimensional representations of asphalt mixtures and have...

journal article 2014

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TIG-dressing of High Strength Butt Welded Connection. Part 2: Physical Testing and Modelling

Van Es, S.H.J. (author), Kolstein, M.H. (author), Pijpers, R.J.M. (author), Bijlaard, F.S.K. (author)

Weld improvement techniques are aimed at reducing the notch effects of welds and generally focus on two aspects: a change of geometry of the weld toe and a change of the weld residual stresses. In this paper, fatigue tests are discussed, performed on butt welded specimens in steel grades ranging from S460 to S1100 in the TIG-dressed condition....

journal article 2014

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TIG-dressing of High Strength Steel Butt Welded Connections. Part 1: Weld Toe Geometry and Local Hardness

Van Es, S.H.J. (author), Kolstein, M.H. (author), Pijpers, R.J.M. (author), Bijlaard, F.S.K. (author)

This paper presents the results of extensive measurements on weld toe geometry of as-welded and TIG-dressed butt welded connections in high strength steels S460, S690 and very high strength steels S890 and S1100. Descriptions of the measurement techniques and data analysis are presented. Four weld toe parameters have been formulated to...

journal article 2014

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Structural unsafety revealed by failure databases

Terwel, K.C. (author), Boot, W. (author), Nelisse, M. (author)

After several major structural incidents in the Netherlands, such as the collapse of five balconies in Maastricht in 2001 resulting in two fatalities, various initiatives have been started to improve structural safety. Research studies were initiated on the characteristics, causes and consequences of structural incidents. In this paper the...

journal article 2014

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Vergleich der nationalen Anhänge der EN 1992-1-1 zum Thema Querkraft und Durchstanzen

Walraven, J.C. (author), Gmainer, S. (author)

Der Eurocode 2 (EN 1992-1-1) beschäftigt sich mit der Bemessung und Konstruktion von Stahlbeton- und Spannbetontragwerken. Eine eingehende Betrachtung und der Vergleich der nationalen Anhänge sind notwendig, um die Unterschiede der national festgelegten Berechnungsparameter zu verifizieren. Dieser Aufsatz gibt einen Überblick über die...

journal article 2014

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The EnCoRe project: An international network for sustainable concrete

Martinelli, E. (author), Barros, J.A.O. (author), Etse, G. (author), Ferrara, L. (author), Folino, P.C. (author), Koenders, E.A.B. (author), Toledo Filho, R.D. (author)

journal article 2014

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The importance of characterisation and sampling of tropical wood species with regard to strength and durability classification

Ravenshorst, G.J.P. (author), Gard, W.F. (author), Van de Kuilen, J.W.G. (author)

Strength class assignments and durability class assignments of wood species to be used in structures are necessary to make it possible for the engineer to design safe and durable timber structures. As a result of sustainable managed forests, more tropical wood species with relative small batch size, are coming on the market. In Europe, strength...

journal article 2013