Searched for: author%3A%22Pijpers%2C+R.J.M.%22
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Pijpers, R.J.M. (author), Verdenius, S.A. (author), Abspoel-Bukman, L.M. (author), Maljaars, J. (author)
This experimental study considers load sequence effects in fatigue crack growth in coupon specimens and in element specimens. The coupon specimens were standard edge crack configurations cyclically loaded under four point bending on base metal and welds, whereas the element specimens were full-scale axially loaded tubular joints. Whereas load...
article 2020
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Pijpers, R.J.M. (author), Slot, H.M. (author)
conference paper 2020
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Rikken, M. (author), Pijpers, R.J.M. (author), Slot, H.M. (author), Maljaars, J. (author)
This study examines residual stresses in bead-on-plate welded specimens in transverse direction over the thickness of the plate, using a combination of experimental and numerical procedures. Dilatometer and tensile tests were used to determine the phase transition temperatures with associated volumetric strains and the stressstrain relationships...
article 2018
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Courage, W.M.G. (author), Dragt, R.C. (author), Pijpers, R.J.M. (author), Maljaars, J. (author), Walters, C.L. (author), van der Weijde, G.D. (author)
design driver for Offshore Wind Turbine (OWT) substructures and also has an im-pact on operational costs. During service life, inspections are required to detect fa-tigue cracks at an early stage. These cracks may need to be repaired. The costs of in-spections and repair are high for offshore structures. To reduce the cost of energy, it is...
article 2016
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Pahlavan, P.L. (author), Pijpers, R.J.M. (author), Hakkesteegt, H.C. (author), Jansen, T.H. (author), Peelen, W.H.A. (author)
Fatigue, as the governing degradation mechanism in steel bridge decks, can lead to non-inspectable cracks under the welded intersections of stiffeners to the deck plate. As a result, estimation of the remaining service life and optimization of the maintenance program of steel bridge decks become a great challenge. A comprehensive structural...
conference paper 2015
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Pereboom, H.P. (author), van Beek, P.J.G. (author), Pijpers, R.J.M. (author), MacDonald, K. (author)
High cycle fatigue failure is likely to occur when a rather undamped offshore installation is operated over a long period of time. Especially welded parts are vulnerable to fluctuating stress ranges, if the structural components, such as the small bore side branches, are loaded in resonance. In particular, the welded connections at e.g. tie-in...
conference paper 2015
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Attema, T. (author), Courage, W.M.G. (author), Maljaars, J. (author), van Meerveld, H. (author), Paulissen, J.H. (author), Pijpers, R.J.M. (author), Slobbe, A.T. (author)
This paper presents a monitoring and modelling methodology to assess the current and future conditions of steel bridges subjected to fatigue cracking. Steel bridges are subjected to fatigue cracking as a result of fluctuating stresses caused by the crossing of heavy vehicles. Specifically for orthotropic steel bridge decks, fatigue cracking is...
conference paper 2015
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van Beek, P.J.G. (author), Pijpers, R.J.M. (author), Macdonald, K. (author), Maljaars, J. (author), Lunde, K. (author), Korst, H.J.C. (author), Hansen, F. (author)
This paper describes a novel and advanced tailor-made fatigue assessment method whereby acceptable vibration levels are based on maximum acceptable stress ranges for individual side branches. The acceptable stress ranges for each critical welded connection are based on a fracture mechanics analysis of fatigue crack growth. This method also...
conference paper 2014
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Pahlavan, P.L. (author), Paulissen, J.H. (author), Pijpers, R.J.M. (author), Hakkesteegt, H.C. (author), Jansen, T.H. (author)
Despite extensive developments in the field of Acoustic Emission (AE) for monitoring fatigue cracks in steel structures, the implementation of AE systems for large-scale bridges is hindered by limitations associated with instrumentation costs and signal processing complexities. This paper sheds light on some of the most important challenges in...
conference paper 2014
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Trichias, K. (author), Pijpers, R.J.M. (author), Meeuwissen, H.B. (author)
Structural Health Monitoring (SHM) systems help to monitor critical infrastructures (bridges, tunnels, etc.) remotely and provide up-to-date information about their physical condition. In addition, it helps to predict the structure’s life and required maintenance in a cost-efficient way. Typically, inspection data gives insight in the structural...
conference paper 2014
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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....
article 2013
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Pahlavan, P.L. (author), Pijpers, R.J.M. (author), Paulissen, J.H. (author), Hakkesteegt, H.C. (author), Jansen, T.H. (author)
Fatigue cracks in orthotropic bridge decks are an important cause for the necessary renovation of existing bridges. Parallel utilization of various technologies based on different physical sensing principles can potentially maximize the efficiency of structural health monitoring (SHM) systems for these complex structures. A multidisciplinary SHM...
conference paper 2013
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Maljaars, J. (author), Pijpers, R.J.M. (author)
A number of orthotropic deck structures of existing bridges are suffering from fatigue cracks. Maintenance of these deck structures may consist of regular inspections and repair of detected cracks. The usual fatigue design life procedure for aswelded structures based on S-N curves is not feasible for determining the remaining fatigue life after...
conference paper 2013
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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...
article 2013
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Pijpers, R.J.M. (author), Pahlavan, P.L. (author), Paulissen, J.H. (author), Hakkesteegt, H.C. (author), Jansen, T.H. (author)
Infrastructure asset owners are more and more confronted with structures reaching the end of their structural life. Structural Health Monitoring (SHM) systems should provide up-to-date information about the actual condition, as well predict the structural life and required maintenance of the assets for more cost effective and reliable operation...
conference paper 2013
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Pijpers, R.J.M. (author), Borsje, H. (author)
report 2012
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Pijpers, R.J.M. (author)
doctoral thesis 2011
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Pijpers, R.J.M. (author), Kolstein, M.H. (author)
An effective application of Very High Strength Steel (VHSS) in civil engineering structures is expected in stiff, truss like structures, typically made of Circular Hollow Sections (CHS). Use of castings in combination with CHS could be promising for the design of highly fatigue resistant joints. Cast steel and CHS are more and more applied in...
conference paper 2010
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Pijpers, R.J.M. (author), Kolstein, M.H. (author), Romeijn, A. (author), Bijlaard, F.S.K. (author), TNO Bouw (author)
Very High Strength Steels (VHSS) with nominal strengths up to 1100 MPa have been available on the market for many years. However, the use of these steels in the civil engineering industry is still uncommon, due to lack of design and fabrication knowledge and therefore limited inclusion in codes. Moreover, in a fatigue loaded VHSS structure...
article 2009
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Pijpers, R.J.M. (author), Kolstein, M.H. (author), Romeijn, A. (author), Bijlaard, F.S.K. (author), TNO Bouw (author)
In a fatigue loaded structure made of Very High Strength Steels (VHSS) absolute and relative stress variations will be higher compared to those in structures made of lower grade steels. Stress concentrations in joints reduce the advantage of VHSS under cyclic loading. A hybrid connection, consisting of cast steel welded to a VHSS member, could...
public lecture 2009
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