Searched for: subject:"steel"
(1 - 20 of 181)

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Liu, Faqi (author), Yang, Hua (author), Yan, R. (author), Wang, Wei (author)
The behaviour of square steel tube confined reinforced concrete columns after fire exposure was studied experimentally and numerically in this paper. Eighteen stub columns were first heated following the ISO 834 standard fire including both heating and cooling phases, and were subsequently loaded to failure after cooling to ambient temperature....
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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Xin, H. (author), Nijgh, M.P. (author), Veljkovic, M. (author)
In this paper, compressive material tests on unconfined/confined resin and steel reinforced resin were experimentally evaluated in order to validate the numerical results. The uniaxial model which combines damage mechanics and Ramberg-Osgood relationship is proposed in this paper to describe the uniaxial compressive behaviour of resin and...
journal article 2019
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Fang, H. (author)
Solid-state phase transformations in steels cover a broad range of aspects. The underlying physics behind these phase transformations usually include nucleation, diffusion, lattice reconstruction and interactions between solutes and grain boundaries and interfaces. These features and the fact that the events take place at high temperatures, in...
doctoral thesis 2019
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Alonso de Celada Casero, C. (author), Sietsma, J. (author), Santofimia Navarro, M.J. (author)
There is sufficient experimental evidence to propose that the formation kinetics of athermal martensite directly depends on the austenite grain structure from which the martensite forms. Yet, this dependence is frequently ignored. The present study investigates the role of the prior austenite grain size (PAGS) in the martensitic...
journal article 2019
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Gil, B (author), Goñi, Rufino (author), Bijlaard, F.S.K. (author), Bayo, Eduardo (author)
Torsional effects in joints need to be investigated in order to get a complete model of the joint and also to assess the real boundary conditions for the lateral torsional effects in the beams of structural frames. Phenomena such as: torsion, warping, lateral buckling, etc. are usually analysed assuming simplified boundary conditions, namely...
journal article 2019
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Wang, H. (author), Zhang, Yue (author), Zhang, Yi (author), Feng, Shuyin (author), Lu, Guoyang (author), Cao, Lintao (author)
Microwave heating is an encouraging heating technology for the maintenance, recycling, and deicing of asphalt pavement. To investigate the microwave heating properties of asphalt mixture, laboratory tests and numerical simulations were done and compared. Two types of Stone Mastic Asphalt (SMA) mixture samples (with basalt aggregates and steel...
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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Fang, H. (author), Szymanski, N. (author), Versteylen, C.D. (author), Cloetens, P. (author), Kwakernaak, C. (author), Sloof, W.G. (author), Tichelaar, F.D. (author), Balachandran, S. (author), Herbig, M (author), Brück, E.H. (author), van der Zwaag, S. (author), van Dijk, N.H. (author)
When metals are mechanically loaded at elevated temperatures for extended periods of time, creep damage will occur in the form of cavities at grain boundaries. In the present experiments it is demonstrated that in binary iron-tungsten alloys creep damage can be self healed by selective precipitation of a W-rich phase inside these cavities. Using...
journal article 2019
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Hidalgo Garcia, J. (author), Alonso de Celada Casero, C. (author), Santofimia Navarro, M.J. (author)
A medium-Mn steel, exhibiting manganese macrosegregation, was investigated. In order to study how the microstructure development influences the fracture mechanisms, the steel was quenching and partitioning processed using two different partitioning temperatures. At 400 °C partitioning temperature, the microstructure exhibits intergranular...
journal article 2019
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Kumar, A. (author), Agarwal, G. (author), Petrov, R.H. (author), Goto, S. (author), Sietsma, J. (author), Herbig, M (author)
The formation of White (WEL) and Brown Etching Layers (BEL) on rail raceways during service causes the initiation of microcracks which finally leads to failure. Detailed characterization of the WEL and the BEL in a pearlitic rail steel is carried out from micrometer to atomic scale to understand their microstructural evolution. A...
journal article 2019
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Hidalgo Garcia, J. (author), Huizenga, R.M. (author), Findley, K.O. (author), Santofimia Navarro, M.J. (author)
By means of high-energy synchrotron X-ray diffraction, the interplay between martensite and retained austenite phases in steel during the application of stress has been analyzed. Martensite properties were varied through controlled reheating heat treatments in a low carbon Quenched and Partitioned (Q&P) steel consisting of retained...
journal article 2019
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Goulas, C. (author), Kumar, A. (author), Mecozzi, M.G. (author), Castro Cerda, Felipe Manuel (author), Herbig, M (author), Petrov, R.H. (author), Sietsma, J. (author)
Atomic-scale investigation was performed on 51CrV4 steel, isothermally held at different temperatures within the bainitic temperature range. Transmission electron microscopy (TEM) analysis revealed three different morphologies: lower, upper, and inverse bainite. Atom Probe Tomography (APT) analysis of lower bainite revealed cementite...
journal article 2019
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Diehl, Martin (author), Kertsch, Lukas (author), Traka, K. (author), Helm, Dirk (author), Raabe, Dierk (author)
Low-alloyed steels with body-centered cubic crystal structure are a material class that is widely used for sheet metal forming applications. When having an adequate crystallographic texture and microstructure, their mechanical behavior is characterized by an isotropic in-plane flow behavior in combination with a low yield strength. The...
journal article 2019
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Lantsoght, E.O.L. (author)
Adding steel fibers to concrete improves the capacity in tension-driven failure modes. An example is the shear capacity in steel fiber reinforced concrete (SFRC) beams with longitudinal reinforcement and without shear reinforcement. Since no mechanical models exist that can fully describe the behavior of SFRC beams without shear reinforcement...
journal article 2019
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Farahani, H. (author)
Steels are still, and probably will remain in future, the primary choice for applications as structural materials. This is not only because of the reasonable ratios of properties over production costs, but also owing to the versatile properties realisable via variety of microstructures achieved by controlling the solid-state phase...
doctoral thesis 2018
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Nijgh, M.P. (author)
Steel-concrete composite beams are widely used in practice because of the simple construction sequence and the economic cross-section design. The application of welded headed studs in composite beams prevents the non-destructive separation of the composite beam, which leads to a very low scoring in the sustainability assessment in terms of the...
poster 2018
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Pargar, F. (author)
Determination of the chloride content in a reinforced concrete structure is important for evaluation of the risk of chloride-induced corrosion of reinforcement. The traditional techniques for chloride determination in concrete are laborious, time-consuming and cannot be used for continuous monitoring of the chloride content. The investigation on...
doctoral thesis 2018
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Zajec, Bojan (author), Bajt Leban, Mirjam (author), Kosec, Tadeja (author), Kuhar, Vili (author), Legat, Andraž (author), Lenart, Stanislav (author), Fifer Bizjak, Karmen (author), Gavin, K. (author)
An important aspect regarding the sustainability of steel structures is to ensure the structure is protected from corrosion. A number of surface coatings are available that play an important role in protecting these structures. An important part of the management of these structures is reliable and regular inspection along with methods for early...
journal article 2018
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Nijgh, M.P. (author), Xin, H. (author), Veljkovic, M. (author)
Injected bolted connections have been used in the Netherlands since the 1970s, initially to replace riveted connections of steel railway bridges. More recently, structural components with different geometrical tolerances have also been connected using injection bolts and oversize holes. The natural confinement of a bolted connection provides...
journal article 2018
Searched for: subject:"steel"
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