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Peeters, D.M.J. (author), Pagani, Alfonso (author), Augello, Riccardo (author), Carrera, Erasmo (author), do Prado, Alex Pereira (author), Cabral, Pedro Higino (author), dos Santos, Henrique E.A.A. (author)
Representative stiffened panels are optimized such that multiple buckling modes and failure (using open hole allowables) occur within a range of 10% of the lowest buckling load. This implies the panels cannot be loaded up to the buckling load without risking failure, hence vibrational correlation testing was used to estimate the buckling loads...
conference paper 2022
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de Araujo Alves Lima, Rosemere (author), Oswal, Akshit (author), Roux, N. (author), Bernasconi, Andrea (author), Carboni, Michele (author), Carrere, Nicolas (author), Teixeira De Freitas, S. (author)
Delamination growth in fibre reinforced polymer composites is generally evaluated with experiments that have been standardized for quasi-static load conditions. These tests characterize unidirectional delamination growth in mode I (DCB), mode II (ELS or ENF) of mixed mode conditions (MMB). However, little attention is paid in literature to the...
conference paper 2022
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Charpentier, G.V.M. (author), Lafont, Ugo (author), Teixeira De Freitas, S. (author)
Spacecrafts are subjected to very few mechanical loads but in the future with reusable spacecraft designed for interplanetary explorations and with the repetition of landing and take off, structures will be subjected to significant mechanical loads. The degradation due to space aging conditions, of the adhesive materials used as joints in space...
conference paper 2022
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Argyropoulos, Alexios (author), Caglar, Baris (author), Gomarasca, S. (author), Ricard, Thomas (author), Michaud, Véronique (author)
Thin-ply composites are recognized as a key solution for the manufacturing of high-performance composite structures due to the unique mechanical properties and the increased design versatility that they offer. They are obtained with state-of-the-art fiber spreading methods where high-count (6-24K filaments) tows of technical fibers (carbon,...
conference paper 2022
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Gülmez, D.E. (author), Sinke, J. (author), Dransfeld, C.A. (author)
Discontinuous tape composites have considerable attention due to their high formability and tailorable structures. Despite their advantages, this discontinuity leads to complex structures and makes it difficult to predict their mechanical properties. On the other hand, they have high orientational and dimensional sensitivity, which causes...
conference paper 2022
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Staal, Jeroen (author), Smit, Edgar (author), Caglar, Baris (author), Michaud, Véronique (author)
Radical Induced Cationic Frontal Polymerisation (RICFP) has recently been proposed as a promising strategy for processing of epoxide carbon fibre reinforced polymers. Control of the local heat balance is crucial towards the production of industrial-quality composites, which is typically achieved via controlling the heat generation. In this work...
conference paper 2022
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Katuin, N. (author), Peeters, D.M.J. (author), Dransfeld, C.A. (author)
Carbon fibre-reinforced polymer composites (CFRPs) outperform most structural engineering materials in specific stiffness and/or specific strength, especially in their unidirectional configuration. Unidirectional composites can be found as individual structural elements in cables or pin-loaded straps; they are however most commonly found in the...
conference paper 2022
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Tao, N. (author), Anisimov, A. (author), Elenbaas, Marcel (author), Groves, R.M. (author)
The use of thick composites and sandwich structures is increasing rapidly in marine, aerospace, and wind energy industries [1–3]. For example in the marine sector, sandwich structures consisting of glassfiber laminate skins bonded to a foam core are attractive because of the advantages of being light-weight, resistant to corrosion and underwater...
conference paper 2022
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Akay, E. (author), Köhler, F. (author), Villegas, I.F. (author)
Continuous ultrasonic welding (CUW) is one of the most efficient integration methods of thermoplastic composites. Researchers from our group have already utilized CUW method by using both frame based and robotic welding platforms to achieve sufficient amount of joint strength for aerospace applications [1-3]. On the other hand, the...
conference paper 2022
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Smeets, E.T.B. (author), Rans, C.D. (author), Alderliesten, R.C. (author), Castro, Saullo G.P. (author), Villegas, I.F. (author)
Ultrasonic spot welding is a joining technique for thermoplastic composites with great potential regarding processing speed and cost. To investigate the damage tolerance and possible inherent damage arresting behavior of multi-spot welded joints, a technique is necessary to measure damage growth in the joints under cyclic loading. Visual...
conference paper 2022
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Daelemans, Lode (author), Dung Dinh, Tien (author), Caglar, Baris (author), Michaud, Véronique (author), Van Paepegem, Wim (author)
We propose a new modeling strategy based on hybrid elements for virtual fiber modeling (also known as the digital element method) to predict both kinematics as well as mechanics of woven fabrics. In virtual fiber modeling, yarns are modeled consisting of a number of discrete fibers. We show that through the development of a modeling strategy...
conference paper 2022
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Trabal, Guillem Gall (author), Bak, Brian Lau Verndal (author), Chen, B. Y. (author), Jensen, Simon Mosbjerg (author), Lindgaard, Esben (author)
A numerical study on the feasibility of using patches of interface weakening or toughening material to trigger multiple delaminations toughening laminated composite structures against delamination is presented. The studies use an adaptive refinement formulation that uses cohesive elements to model delamination initiation and propagation. A DCB...
conference paper 2022
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Liu, S. (author), Sinke, J. (author), Dransfeld, C.A. (author)
Hot-pressing can be an attractive fabrication method that enables the forming of hybrid materials like thermoset based fibre metal laminates. However, the process simulation on press forming requires accurate material characterization and boundary conditions to facilitate part design for a defect-free component. In order to improve the overall...
conference paper 2022
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Subramanian, N. (author), Bisagni, C. (author)
The effectiveness of carbonaceous nanoparticles in arresting and delaying damage in nanocomposites has been attributed to multiscale toughening mechanisms. To explore their application in joined interfaces of composites, this study investigates the use of carbon nanotube (CNT) interleaved films for co-cured joining of composite parts and their...
conference paper 2022
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Antoniou, A (author), Dyer, K (author), Finnegan, William (author), Herring, Robbie (author), Holst, Bodil (author), Ilsted Bech, Jakob (author), Katsivalis, Ioannis (author), Kutlualp, Tazefidan (author), Teuwen, Julie J.E. (author)
In the immediate future, wind power will provide more electricity than any other technology based on renewable and low-emission energy sources. As a result, the size of offshore wind turbines has increased to harvest more wind energy in order to achieve the 2050 EU carbon neutral targets. The use of composites opens great prospects in the design...
conference paper 2022
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Augello, Riccardo (author), Pagani, Alfonso (author), Carrera, Erasmo (author), Peeters, D.M.J. (author), do Prado, Alex Pereira (author), dos Santos, Henrique E.A.A. (author), Galeb, Pedro H.G. (author), H. Cabral, Pedro (author)
The present paper deals with the buckling and post-buckling analysis of a multilayered composite reinforced panel. The panel, design for aeronautical applications, results in a complex stacking sequence, and the development of a refined model able to describe its geometrical nonlinear behavior is mandatory to avoid the usage of highly...
conference paper 2022
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Farooq, U. (author), Teuwen, Julie J.E. (author), Dransfeld, C.A. (author)
Epoxies with high cross-linking densities are brittle and hence have a low fracture toughness. However, different methods are known to increase fracture toughness. Numerous approaches are known to incorporate a second phase into the epoxy matrix, such as rubber, inorganic nanoparticles or thermoplastics, referred to as bulk resin modification....
conference paper 2022
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Alderliesten, R.C. (author), den Ouden, H.J. (author)
Delamination growth in fibre reinforced polymer composites is generally evaluated with experiments that have been standardized for quasi-static load conditions. These tests characterize unidirectional delamination growth in mode I (DCB), mode II (ELS or ENF) of mixed mode conditions (MMB). However, little attention is paid in literature to the...
conference paper 2022
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Bhangale, J.A. (author), Alderliesten, R.C. (author), Benedictus, R. (author), Bersee, H.E.N. (author)
Prediction models for fatigue in engineering applications are developed within a fatigue analysis framework, deliberately selected in some cases, but mostly chosen without substantiation. The proposition of this paper is that selecting the most appropriate framework can only be done with the knowledge and a complete overview of existing...
conference paper 2022
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van Campen, J.M.J.F. (author)
Significant improvements in the mechanical performance of a laminated composite structure can be achieved by spatial variation of the stiffness properties within the laminate. Such a variable stiffness (VS) laminate, typically is created by steering the fibers within the laminae, resulting in an in-plane variation of stacking sequence and thus...
conference paper 2022
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