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Coraddu, A. (author), Oneto, Luca (author), Li, Shen (author), Kalikatzarakis, Miltiadis (author), Karpenko, O. (author)In this paper, for the first time, a three-step approach for the optimal design of stiffened panels accounting for the ultimate limit state due to welding residual stress is developed. First, authors rely on state-of-the-art analytical approaches coupled with recently data-driven nonlinear finite element methods surrogates characterized by...journal article 2023
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Li, Shen (author), Coraddu, A. (author), Oneto, Luca (author)Ultimate limit state (ULS) assessment examines the maximum load-carrying capacity of structures considering inelastic buckling failure. Contrary to the traditional allowable stress principle which is mainly based on experiences, the ULS assessment focuses on explicitly evaluating the structural safety margin and thus enables a consistent...journal article 2022
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Schaper, Lukas (author), Tankova, T. (author), da Silva, Luís Simões (author), Knobloch, Markus (author)Residual stresses have considerable effect on both the local and the member stability behaviour of steel structures. Previous studies have shown that the structural stability behaviour depends on both the distribution and the amplitude of the residual stresses. The residual stress distribution is affected by the cross-section geometry, the...journal article 2022
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Baar, Simon (author), Pavlov, Leonid (author), Kassapoglou, C. (author)Onset Theory (previously known as Strain Invariant Failure Theory) is a physics-based composite failure criterion attempting to predict failure at the level of constituents rather than for a homogenized ply. Applying Onset Theory correctly requires a number of steps. As a starting point for other researchers, a consistent approach is...journal article 2022
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Maarleveld, Arvid (author), Malschaert, D.H. (author), Veljkovic, M. (author)Orthotropic bridge decks are susceptible to fatigue cracks which are influenced by the thickness of their components, welding procedure, type of the weld, the position of the considered detail in relation to the local loading condition and by residual stresses due to welding. The above-mentioned parameters determine the detail category for...conference paper 2022
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Eivani, A.R. (author), Vafaeenezhad, H. (author), Jafarian, H. R. (author), Zhou, J. (author)The faults in welding design and process every so often yield defective parts during friction stir welding (FSW). The development of numerical approaches including the finite element method (FEM) provides a way to draw a process paradigm before any physical implementation. It is not practical to simulate all possible designs to identify the...journal article 2021
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Yuksel, O. (author), Sandberg, Michael (author), Hattel, Jesper H. (author), Akkerman, Remko (author), Baran, Ismet (author)Pultruded fiber-reinforced polymer composites are susceptible to microstructural nonuni-formity such as variability in fiber volume fraction (V<sub>f</sub> ), which can have a profound effect on process-induced residual stress. Until now, this effect of non-uniform V<sub>f</sub> distribution has been hardly addressed in the process models. In...journal article 2021
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Xin, H. (author), Correia, José A.F.O. (author), Veljkovic, M. (author), Berto, Filippo (author), Manuel, Lance (author)The fatigue resistance of welded connections made of high strength steel (HSS) is one of the most important topics for the application of HSS in the construction sector. One of the most challenging issues is how to predict the fatigue life of welded structures with complex geometry based on the test results from relatively simple coupon...journal article 2021
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van den Berg, Niels (author), Xin, H. (author), Veljkovic, M. (author)Orthotropic steel decks (OSD's) are susceptible to fatigue failure due to cyclic loading. Often fatigue cracks are found in the joint between the deck plate and the trough. Due to the welding process, residual stresses are present in and around the joint. In this paper, the effect of residual stresses on the fatigue crack propagation rate has...journal article 2021
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Shakeri, Iman (author), Shahani, Amir Reza (author), Rans, C.D. (author)Since welded joints in structures are known to be critical regions for crack initiation and growth, study of fatigue crack growth behavior of welded joints under various loading scenarios are essential. In present study, two groups of experiments were conducted. At first, fatigue crack growth behavior of Al5083 butt welded joint subjected to...journal article 2021
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Baldassarre, Alessandro (author), Martinez, Marcias (author), Rans, C.D. (author)The present study reports on the evaluation of residual stress field formation and distribution in Central Cut Plies (CCP) specimens. Real-time measurements were performed using a distributed sensing fiber optic system based on Rayleigh Backscattering, which was successfully able to capture strain distribution inside the adhesive layer at...review 2020
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Shahani, Amir Reza (author), Shakeri, Iman (author), Rans, C.D. (author)Redistribution of residual stress during crack growth in butt welded joint of Al5083-H111 was studied. Furthermore, the effect of post weld heat treatment and removing the weld reinforcements on fatigue crack growth rate was investigated. Three dimensional simulations of welding process and fatigue crack growth were conducted. It was shown...journal article 2020
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Zou, Sheng (author), Xiao, Hanbin (author), Ye, Fangping (author), Li, Z. (author), Tang, Wenzhi (author), Zhu, Feng (author), Chen, Chentong (author), Zhu, Chao (author)The inevitably formed residual stress in the Selective Laser Melting (SLM) process leads to distortion, crack and even delamination of the workpiece. Single laser is commonly applied during SLM processing. However, its productivity is much lower than multiple lasers. In addition, the research of residual stress with multi-laser condition...journal article 2020
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Josefson, B. Lennart (author), Bisschop, R. (author), Messaadi, M. (author), Hantusch, J. (author)The aluminothermic welding (ATW) process is the most commonly used welding process for welding rails (track) in the field. The large amount of weld metal added in the ATW process may result in a wide uneven surface zone on the rail head, which may, in rare cases, lead to irregularities in wear and plastic deformation due to high dynamic wheel...journal article 2020
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Xin, H. (author), Veljkovic, M. (author)In this paper, the parameters of fatigue crack growth rate for Q355J2 steel exposed to air and seawater were presented using the “Paris' law” based on the stress intensity factor (SIF), J-integral, crack tip opening displacement (CTOD) and crack tip opening angle (CTOA). The residual stress of a compact tension specimen is analysed by...journal article 2020
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Li, H. (author), Wang, Hao (author), Alderliesten, R.C. (author), Xiang, Junxian (author), Lin, Yanyan (author), Xu, Yingmei (author), Zhao, Haidan (author), Tao, Jie (author)The effect of shot peen forming on the mechanical behavior of fiber metal laminates (FMLs) based on aluminium-lithium alloy was investigated to reveal the strengthening mechanism and to dispel the suspicion that shot peen forming may result in the performance deterioration of FMLs. The interlaminar, static strength and fatigue properties of...journal article 2020
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Xiong, Yongming (author), Li, Chuanxi (author), Chen, Zhuoyi (author), He, Jun (author), Xin, H. (author)Residual stresses change the stress ratio of fluctuating stresses, hence seriously affect the fatigue life of orthotropic steel decks (OSDs) under traffic loading. Residual stress distributions near the U rib-diaphragm joints are very complicated and need to be investigated further. In this paper, a systematic method has been proposed for...journal article 2020
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Eftekharimilani, P. (author)The potential for weight reduction, ease of manufacturing and improved crashworthiness makes advanced and ultra high strength steels attractive for automotive applications. Resistance spot welding is by far the most widely used joining method in the automotive industry due to the high operating speeds, the reliability of the process and the...doctoral thesis 2019
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Abouhamzeh, M. (author), Sinke, J. (author), Benedictus, R. (author)This paper reviews predictive models developed for the development of residual stresses and shape distortions during the manufacturing of thermoset polymeric/composite materials. Different sources that produce residual stresses and shape changes in the laminated panels are described and reviewed. An overview is presented on the...review 2019
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Munro, D.P. (author), Ayas, C. (author), Langelaar, Matthijs (author), van Keulen, A. (author)We study linearity assumptions in the transient macroscale mechanical aspect of additive manufacturing (AM) process simulation. Linearity assumptions are often resorted to in combination with calibrated inelastic deformation components to arrive at computationally tractable yet reasonably accurate AM process models. We point out that...journal article 2019