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Staal, Jeroen (author), Caglar, Baris (author), Michaud, Véronique (author)Frontal polymerisation has the potential to bring unprecedented reductions in energy demand and process time to produce fibre reinforced polymer composites. Production of epoxy-based fibre reinforced polymer parts with high fibre volume content, commonly encountered in industry, is however hindered by the heat sink created by the fibres and...journal article 2024
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Yuksel, O. (author), Caglar, Baris (author), Broggi, G.C. (author), Michaud, Véronique (author), Akkerman, Remko (author), Baran, Ismet (author)The transverse permeability of roving/tow-based fiber reinforcement is of great importance for accurate flow modeling in the pultrusion process. This study proposes an experimental approach to characterize the roving-based fiber beds' permeability under different compaction conditions. The experimental permeability results of thick roving...journal article 2024
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Yuksel, O. (author), Błazucki, S.K. (author), Broggi, G.C. (author), Caglar, Baris (author)Transverse permeability is a key parameter to construct accurate process modelling frameworks for composite manufacturing processes whereby dry reinforcements are impregnated by a resin. The transverse permeability of fibrous structures is strongly correlated with the spatial fiber distribution which is inevitably irregular through the cross...conference paper 2023
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Teixidó, Helena (author), Caglar, Baris (author), Michaud, Véronique (author)We seek to address how air entrapment mechanisms during infiltration are influenced by the wetting characteristics of the fluid and the pore network formed by the reinforcement. To this end, we evaluated the behavior of two model fluids with different surface tensions, infiltrating three carbon fiber reinforcements, by means of X-ray...journal article 2023
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- Binetruy, Christophe (author), Caglar, Baris (author), Daelemans, Lode (author), Dransfeld, C.A. (author), Michaud, Véronique (author) contribution to periodical 2023
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Caglar, Hasan (author), Aksoy, Y.A. (author), Idapalapati, Sridhar (author), Caglar, Baris (author), Sharma, Mohit (author), Kerm Sin, Chian (author)We investigated the debonding on-demand (DoD) of adhesively bonded hybrid dissimilar joints by applying electromagnetic induction heating to the joint overlap section, wherein the epoxy resin is reinforced with iron oxide (Fe<sub>3</sub>O<sub>4</sub>) particles. Ti-6Al-4 V adherends were bonded with CFRP or GFRP adherends using neat/modified...journal article 2023
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Teixidó, Helena (author), Broggi, G.C. (author), Caglar, Baris (author), Michaud, Véronique (author)We propose a methodology to monitor the progressive saturation of a non-translucent unidirectional carbon fabric stack through its thickness by means of X-ray radiography and extract the dynamic saturation curves using image analysis. Four constant flow rate injections with increasing flow speed were carried out. These were simulated by a...journal article 2023
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Staal, Jeroen (author), Smit, Edgar (author), Caglar, Baris (author), Michaud, Véronique (author)Radical induced cationic frontal polymerisation (RICFP) is considered a promising low energy method for processing of fibre reinforced polymers (FRPs). Optimisation of the local heat balance between reinforcement, epoxy resin and the surrounding mould is required to pave the way for its adaptation to an industrial processing method for high...journal article 2023
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Zweifel, L.Z. (author), Kupski, J.A. (author), Dransfeld, C.A. (author), Caglar, Baris (author), Baz, Stephan (author), Cessario, Damian (author), Gresser, Götz T. (author), Brauner, Christian (author)The aim of this study was to characterise the microstructural organisation of staple carbon fibre-reinforced polymer composites and to investigate their mechanical properties. Conventionally, fibre-reinforced materials are manufactured using continuous fibres. However, discontinuous fibres are crucial for developing sustainable structural...journal article 2023
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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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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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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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Teixidó, Helena (author), Caglar, Baris (author), Michaud, Véronique (author)Visualization of resin flow progression through fibrous preforms is often sought to elucidate flow patterns and validate models for filling prediction for liquid composite molding processes. Here, conventional X-ray radiography is compared to X-ray phase contrast technique to image in-situ constant flow rate impregnation of a non-translucent...conference paper 2022
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Caglar, Baris (author), Broggi, G.C. (author), Ali, Muhammad A. (author), Orgéas, Laurent (author), Michaud, Véronique (author)Knowledge of permeability of fibrous microstructures is crucial for predicting the mold fill times and resin flow path in composite manufacturing. Herein we report a method to rapidly predict the permeability of 3D fibrous microstructures. Our method relies on predicting the permeability of 2D cross-sections via deep neural networks and...conference paper 2022
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Caglar, Baris (author), Broggi, G.C. (author), Ali, Muhammad A. (author), Orgéas, Laurent (author), Michaud, Véronique (author)Permeability of fibrous microstructures is a key material property for predicting the mold fill times and resin flow path during composite manufacturing. In this work, we report an efficient approach to predict the permeability of 3D microstructures from deep learning based permeability predictions of 2D cross-sections combined via a circuit...journal article 2022
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Batt, Till (author), Herwig, Gordon (author), Annaheim, Simon (author), Clement, Pietro (author), Furer, Lea (author), Hirsch, Cordula (author), Varanges, Vincent (author), Caglar, Baris (author), Michaud, Véronique (author)The COVID-19 pandemic resulted in shortages of personal protective equipment and medical devices in the initial phase. Agile small and medium-sized enterprises from regional textile industries reacted quickly. They delivered alternative products such as textile-based community masks in collaboration with industrial partners and research...journal article 2022
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Varanges, Vincent (author), Caglar, Baris (author), Lebaupin, Yann (author), Batt, Till (author), He, Weidong (author), Wang, Jing (author), Rossi, René M. (author), Richner, Gilles (author), Delaloye, Jean Romain (author), Michaud, Véronique (author)After the spread of COVID-19, surgical masks became highly recommended to the public. They tend to be handled and used multiple times, which may impact their performance. To evaluate this risk, surgical masks of Type IIR were submitted to four simulated treatments: folding, ageing with artificial saliva or sweat and washing cycles. The air...journal article 2022
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Wegmann, Stephanie (author), Rytka, Christian (author), Diaz-Rodenas, Mariona (author), Werlen, Vincent (author), Schneeberger, Christoph (author), Ermanni, Paolo (author), Caglar, Baris (author), Gomez, Colin (author), Michaud, Véronique (author)In this study, three novel thermoplastic impregnation processes were analyzed towards automotive applications. The first process is thermoplastic compression resin transfer molding in which a glass fiber mat is impregnated in through thickness by a thermoplastic polymer. The second process is a melt-thermoplastic Resin Transfer Molding (RTM)...journal article 2022
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Teixidó, Helena (author), Staal, Jeroen (author), Caglar, Baris (author), Michaud, Véronique (author)Capillarity plays a crucial role in many natural and engineered systems, ranging from nutrient delivery in plants to functional textiles for wear comfort or thermal heat pipes for heat dissipation. Unlike nano- or microfluidic systems with well-defined pore network geometries and well-understood capillary flow, fiber textiles or preforms used...review 2022
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Staal, Jeroen (author), Caglar, Baris (author), Hank, Travis (author), Wardle, Brian L. (author), Gorbatikh, Larissa (author), Lomov, Stepan V. (author), Michaud, Véronique (author)In-plane permeability of small area (100 × 50 mm) alumina fiber woven fabrics grafted with aligned carbon nanotubes (CNT) was quantified by placing them in series with a glass mat of known permeability during a flow experiment. The methodology was first validated on a reference woven textile. Permeability values matched those obtained by a...journal article 2021
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