Searched for: subject:"cracking"
(1 - 20 of 367)

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Alderliesten, R.C. (author)
With the introduction of fibre metal laminates (FMLs) as a (fatigue) damage tolerant material concept in aeronautics, an interesting field emerged where fatigue damage interaction plays a dominant role. The hybrid concept effectively demands evaluating fatigue damage growth based on fracture phenomena typical for both metals and fibre...
journal article 2019
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Bahrami, Abbas (author), Khouzani, Mahdi Kiani (author), Mokhtari, Seyed Amirmohammad (author), Zareh, Shahin (author), Yazdan Mehr, M. (author)
This paper investigates the root cause of the formation of surface cracks on hot-rolled C-Mn constructional steel heavy plates. Cracks are rather evenly distributed over the surface in the form of colonies of cracks. Samples were cut from the heavy plate. The microstructure of samples in the as-cast and hot-rolled states were studied using...
journal article 2019
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Agarwal, G. (author)
Preventing solidification cracking is an essential prerequisite for the safety of a welded structure. An undetected solidification crack has the potential to cause premature failure during service. Two conditions generated by a weld thermal cycle are responsible for the initiation of solidification cracks. The first is the presence of excessive...
doctoral thesis 2019
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Yu, C. (author)
It is difficult to accurately predict the strength of masonry and concrete structures. The most widely used method for simulating their behaviour is finite element analysis with the Newton-Raphson method and arch length control. However, the Newton-Raphson method can diverge and not produce a result, for example in bifurcations or during snap...
doctoral thesis 2019
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Rajabzadehdizaji, A. (author), Heusdens, R. (author), Hendriks, R.C. (author), Groves, R.M. (author)
In this paper, we propose a novel approach to characterise barely visible transverse matrix cracks in composite structures using fibre Bragg grating (FBG) optical sensors. Matrix cracks are one of the most prevalent types of damage in composite structures, and detecting them in the internal layers of composites has remained a challenge. In...
journal article 2019
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Palin, D. (author), Mo, Yu (author), Wiktor, V.A.C. (author), Jonkers, H.M. (author)
Presented is a modified test for generating crack permeability data for cementitious materials. Single-parallel cracks were generated in mortar specimens. The width of the cracks was analysed through stereomicroscope and computer tomography, and the water permeability of the cracks was determined. Reduction factors and crack flow models were...
journal article 2019
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Dekker, R. (author), van der Meer, F.P. (author), Maljaars, J. (author), Sluijs, L.J. (author)
Structures are subjected to cyclic loads that can vary in direction and magnitude, causing constant amplitude mode I simulations to be too simplistic. This study presents a new approach for fatigue crack propagation in ductile materials that can capture mixed-mode loading and overloading. The extended finite element method is used to deal with...
journal article 2019
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Tan, Reignard (author), Hendriks, M.A.N. (author), Geiker, M. (author), Kanstad, T. (author)
The modified cracked membrane model (MCMM) presented in this paper was formulated to facilitate a mechanical calculation model that predicts crack widths in reinforced concrete (RC) structures subjected to in-plane loading for all cracking stages. It was formulated using the basic concepts of the existing cracked membrane model (CMM)....
journal article 2019
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Korswagen Eguren, P.A. (author), Longo, M. (author), Meulman, E. (author), Rots, J.G. (author)
In recent years, gas extraction in the northern part of the Netherlands has been causing low-magnitude, induced, shallow earthquakes. Besides safety, the prediction and evaluation of ‘light’ damage due to these induced ground motions is important, as it is related to economic and serviceability losses, and societal unrest. An experimental and...
journal article 2019
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Yang, Z. (author), Li, Z. (author)
Recent finite element (FE) simulations have revealed the generation and propagation of waves in rail surfaces induced by wheel-rail frictional rolling. These waves have rarely been addressed in the literature. This paper presents an in-depth analysis of these waves, aiming to give new insights into the contact mechanics, a research area in...
journal article 2019
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Pari, M. (author), Hendriks, M.A.N. (author), Rots, J.G. (author)
Sequentially linear analysis (SLA), a non-incremental-iterative approach towards finite element simulation of quasi-brittle materials, is based on sequentially identifying a critical integration point in the model, to reduce its strength and stiffness, and the associated critical load multiplier (λ <sub>crit</sub> ), to scale the linear...
journal article 2019
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Korswagen Eguren, P.A. (author), Longo, M. (author), Meulman, E. (author), Rots, J.G. (author)
Induced seismicity in the north of the Netherlands has recently exposed unprepared, unreinforced masonry structures to considerable earthquake risk. While the ultimate-limit state capacity of the structures is vital to assess the individual’s risk, their behavior during more frequent, lighter earthquakes, leading to ‘lighter damage’, has shown...
conference paper 2019
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Agarwal, G. (author), Kumar, A. (author), Richardson, I. (author), Hermans, M.J.M. (author)
Solidification cracking susceptibility during laser welding was studied experimentally and numerically in advanced high strength steel sheets, namely transformation-induced plasticity (TRIP) and dual phase (DP) steel. Using the same heat input, laser bead-on-plate welding was carried out on single sided clamped specimens at various starting...
journal article 2019
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Romero Rodriguez, C. (author), Chaves Figueiredo, S. (author), Deprez, M. (author), Snoeck, D. (author), Schlangen, H.E.J.G. (author), Šavija, B. (author)
Recently the concept of crack self-sealing has been investigated as a method to prevent degradation and/or loss of functionality of cracked concrete elements. To obtain self-sealing effect in the crack, water swelling admixtures such as superabsorbent polymers (SAP) are added into the cementitious mix. In order to design such self-sealing...
journal article 2019
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Lukovic, M. (author), Hordijk, D.A. (author), Huang, Z. (author), Schlangen, H.E.J.G. (author)
Strain Hardening Cementitious Composite (SHCC) is an innovative material which, due to the special material composition and the addition of fibres, exhibits a controlled microcracking behaviour under tensile stresses. As such it might be a promising material for improvement of durability of concrete structures.<br/><br/>An experimental study was...
journal article 2019
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Bei, G. (author), Mačković, Mirza (author), Spiecker, Erdmann (author), Greil, Peter (author)
The oxidation-induced crack healing of an Al<sub>2</sub>O<sub>3</sub> composite loaded with various volume fractions of Ti<sub>2</sub>Al<sub>0.5</sub>Sn<sub>0.5</sub>C repair filler particles was investigated by annealing in air at a relatively low temperature of 700°C. After annealing a composite with 20 vol.% repair fillers (with a particle...
journal article 2019
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Wu, W. (author), Kolstein, M.H. (author), Veljkovic, M. (author)
The orthotropic steel decks (OSDs) are widely used in bridge engineering to support traffic loads. A possible crack, initiating from the weld toe of rib-to-deck welded joint and growing into the deck plate, is studied using linear elastic fracture mechanics. A detailed FE model is created and the results are compared with the fatigue tests...
journal article 2019
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van der Horst, Menno (author), van Kreveld, Sylvia (author), Kaminski, M.L. (author)
Wireless crack monitoring on ships and offshore structures based on Self Magnetic Flux Leakage (SMFL) measurements is a promising method to guarantee the structural integrity in a more effective way, leading to reduced operational costs and increased safety. For accurate crack sizing, the SMFL measurements must be interpreted correctly, also...
journal article 2019
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Lantsoght, E.O.L. (author)
Even though the structural behavior steel fiber reinforced concrete (SFRC) has been extensively researched, structural applications are still limited. One barrier to its implementation is the lack of mechanical models that describe the behaviour of SFRC members failing in shear. This paper reviews the effect of steel fibers on the different...
review 2019
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Xin, H. (author), Veljkovic, M. (author)
The assessment of fatigue crack initiation behavior of steel structures is essential and important especially to improve the application of high strength steel in construction. For a complete understanding of fatigue endurance, it is necessary to combine the phenomenological damage model with finite element numerical approach. In this paper,...
journal article 2019
Searched for: subject:"cracking"
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