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Li, Z. (author)Over many decades, intensive studies have been performed towards safe and sustainable substitutes for chromate corrosion inhibitors in active corrosion protection coatings for aerospace aluminium alloys. The proposed candidates must provide similar corrosion protection as compared to that of chromate-based compounds and be cost-effective for...doctoral thesis 2024
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Li, Z. (author), Visser, Peter (author), Hughes, Anthony E. (author), Homborg, A.M. (author), Gonzalez Garcia, Y. (author), Mol, J.M.C. (author)The quest for novel alternatives to hexavalent-chromium-based corrosion inhibitors is of utmost significance and urgency. Strict international health and safety regulations, due to growing concerns regarding the impact of hexavalent chromium on human health and the environment, have pushed the commercial introduction of many alternative...journal article 2024
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Cornet, A.J. (author), Homborg, A.M. (author), Ravi Anusuyadevi, P. (author), 't Hoen-Velterop, L. (author), Mol, J.M.C. (author)Despite extensive research, eliminating hexavalent chromium-based inhibitors from aerospace coatings remains challenging due to a lack of understanding of coating degradation during aircraft service. This study addresses the issue by investigating the protective mechanisms and aging processes of chromate-containing coatings on aircraft...journal article 2024
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Li, Z. (author), Homborg, A.M. (author), Visser, Peter (author), Gonzalez Garcia, Y. (author), Mol, J.M.C. (author)In this work, the corrosion mechanism of AA2024-T3 covered by a lithium-based conversion layer is studied with high spatial and temporal resolution. Although the aluminium alloy surface is protected by a multi-layered conversion layer, areas around intermetallic phases (IMPs) represent weak spots due to an insufficient generation of a...journal article 2024
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van Dam, J.P.B. (author), Tiringer, U. (author), Abrahami, S.T. (author), Milošev, I. (author), Terryn, H.A. (author), Kovač, J. (author), Mol, J.M.C. (author)The sol–gel process is a chemical surface preparation method based on hydrolysis and polycondensation reactions for enhanced adhesion for metallic substrates in adhesive bonding and coating applications. This paper describes an investigation into the effect of the microstructural complexity of two commonly used aerospace aluminium alloys (AAs...journal article 2024
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Bakshi, Jaskrit (author)Having seen exponential growth in demand for air travel, the aviation industry has found itself trying to find a balance between economic growth, technological development, and environmental sustainability. This saw a shift in attention towards materials such as fiber reinforced composites, predominantly thermoset in the past with higher...master thesis 2023
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Arblaster, Thomas (author)Emerging in the domain of composite manufacturing, thermoplastic polymers can enable the reduction of process times, costs, and waste. In this study, lifecycle assessment (LCA) is used to evaluate a design for a carbon fibre-reinforced thermoplastic (CFRTP) wing rib, made from carbon fibre and polyetherketoneketone (CF/PEKK). The CF/PEKK rib is...master thesis 2023
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Li, Z. (author), Li, G. (author), Visser, Peter (author), Homborg, A.M. (author), Gonzalez Garcia, Y. (author), Mol, J.M.C. (author)Scanning electrochemical microscopy (SECM) is employed to characterize the evolution of local electrochemical surface activity during lithium-based conversion layer formation on legacy aerospace aluminium alloy AA2024-T3. Initially, three types of studied intermetallic particles - S-, θ- and constituent phases - act as active cathodic areas....journal article 2023
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Li, Z. (author), Homborg, A.M. (author), Gonzalez Garcia, Y. (author), Visser, Peter (author), Soleimani, M. (author), Mol, J.M.C. (author)The influence of ageing under ambient conditions on the corrosion protective behaviour of a lithium-based conversion layer on AA2024-T3 is studied in this work. Conversion layers aged at ambient conditions for relatively short times (0 h and 4 h), show an initial high degree of corrosion inhibition but a much lower protectiveness after the...journal article 2023
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Quan, H. (author)Fatigue failures are a major concern in aeronautics. The growth of fatigue cracks in metallic structures and adhesively bonded joints has been studied for decades. Nowadays, most researchers evaluate and predict the fatigue damage growth rate (da/dN) with empirical and phenomenon based approaches, using Linear Elastic Fracture Mechanics with...doctoral thesis 2022
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Sewlikar, Parth (author)For the past few decades, the aerospace industry has been actively looking for measures to tackle the problem of localized corrosion of aluminium alloy 2024-T3. One such measure was the use of hexavalent chromium salts as corrosion inhibitors. However, recent studies have reflected the environmental concerns and health impacts associated with...master thesis 2022
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Tognan, A. (author), Laurenti, L. (author), Salvati, E. (author)Background: Over the past 20 years, the Contour Method (CM) has been extensively implemented to evaluate residual stress at the macro scale, especially in products where material processing is involved. Despite this, insufficient attention has been devoted to addressing the problems of input data filtering and residual stress uncertainties...journal article 2022
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Paz Martinez-Viademonte, Mariana (author), Abrahami, S.T. (author), Hack, Theodor (author), Burchardt, Malte (author), Terryn, H.A. (author)The adhesion capabilities of sulfuric acid and tartaric-sulfuric-acid anodic oxide films on cladded AA2024-T3 aluminium substrates have been investigated in a quantitative manner. A relatively simple, versatile and industrially applicable test methodology based on DIN EN ISO 29862 has been used. In addition, the effect of anodising process...journal article 2022
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Habraken, Anne Marie (author), Aksen, Toros Arda (author), Alves, José L. (author), Amaral, Rui L. (author), Chandola, Nitin (author), Corallo, Luca (author), Engel, Bernd (author), Esener, Emre (author), Galan Lopez, J. (author), Kestens, L.A.I. (author)This article details the ESAFORM Benchmark 2021. The deep drawing cup of a 1 mm thick, AA 6016-T4 sheet with a strong cube texture was simulated by 11 teams relying on phenomenological or crystal plasticity approaches, using commercial or self-developed Finite Element (FE) codes, with solid, continuum or classical shell elements and different...journal article 2022
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Li, Z. (author), Homborg, A.M. (author), Gonzalez Garcia, Y. (author), Kosari, A. (author), Visser, Peter (author), Mol, J.M.C. (author)The formation process of a lithium-based conversion layer on AA2024-T3 and its corrosion protective behavior are studied using electrochemical noise (EN). Wavelet transform, as well as noise resistance analysis, have been employed to interpret the EN data. The EN data confirmed five different stages during the conversion layer growth,...journal article 2022
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Li, Yue (author), Li, Hongxiang (author), Katgerman, L. (author), Du, Qiang (author), Zhang, Jishan (author), Zhuang, Linzhong (author)Hot tearing is one of the most severe and irreversible casting defects for many metallic materials. In 2004, Eskin et al. published a review paper in which the development of hot tearing of aluminium alloys was evaluated (Eskin and Suyitno, 2004). Sixteen years have passed and this domain has undergone considerable development. Nevertheless,...review 2021
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Meeusen, M. (author)The corrosion protection of metallic substrates with corrosion inhibitors, either in solution or dispersed in a coating formulation, has been the focus of many research topics for many decades and has intensified in recent years even more with industry moving away from hexavalent chromium (Cr(VI))- based corrosion inhibitors. While mainly...doctoral thesis 2020
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Olgiati, Matteo (author)Salts of trivalent cerium (Ce(III)) are known to successfully hinder localised corrosion phenomena typical of aerospace aluminium alloys by forming a thin passivation layer on top of the corrosion-active intermetallic phases. This is generally observed to happen when the alloy is under immersion conditions in a solution containing Ce3+ ions....master thesis 2020
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Kosari, A. (author), Zandbergen, H.W. (author), Tichelaar, F.D. (author), Visser, P. (author), Taheri, P. (author), Terryn, H.A. (author), Mol, J.M.C. (author)Dealloying is involved in materials science responsible for fabrication of nanoscale structures beneficially but for corrosion degradations detrimentally. Detailed understanding related to the latter is critical for designing corrosion-resistance alloys and dedicated inhibition systems. Thus, direct nanoscopic observations of nano-structural...journal article 2020
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Kosari, A. (author), Tichelaar, F.D. (author), Visser, P. (author), Zandbergen, H.W. (author), Terryn, H.A. (author), Mol, J.M.C. (author)Nanoscopic characterization of heterogeneous intermetallic particles (IMPs) which microstructurally and compositionally evolve during local corrosion is crucial in unravelling the mechanisms and sequence of initial and local corrosion events. Herein, we study site-specific initiation events focused on microscopic constituent intermetallic...journal article 2020