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Lee, Gye Won (author), Kim, Tae Woo (author), Sloof, W.G. (author), Lee, Kee Sung (author)Repetitive heating and cooling cycles inevitably cause crack damage of hot gas components of gas turbine engines, such as blades and vanes. In this study the self-healing capacity is investigated of mullite + ytterbium monosilicate (Yb<sub>2</sub>SiO<sub>5</sub>) as EBC material with Ti<sub>2</sub>AlC MAX phase particles embedded as a crack...journal article 2021
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Rong, Jian (author), Zhu, Jia-Ning (author), Xiao, Wenlong (author), Zhao, Xinqing (author), Ma, Chaoli (author)Thermal conductivity is a key parameter for high performance material needed for electronic devices. While most commercially used Mg foundry alloys exhibit low thermal conductivities. In this work, we developed an Mg–3RE–0.5Zn alloy that is suitable for high pressure die cast (HPDC) ultrathin wall cellphone components. The thermal...journal article 2021
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Ding, Chao (author), Wang, Jian (author), Liu, Tianhan (author), Qin, Hongbo (author), Yang, Daoguo (author), Zhang, Kouchi (author)Full intermetallic compound (IMC) solder joints present fascinating advantages in high-temperature applications. In this study, the mechanical properties and elastic anisotropy of η’-Cu6Sn5 and Cu3Sn intermetallic compounds were investigated using first-principles calculations. The values of single-crystal elastic constants, the elastic (E),...journal article 2021
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Li, Z. (author), Beltran, Irving Alfredo Flores (author), Chen, Y. (author), Šavija, B. (author), Ye, G. (author)In this study, glass wool waste was utilized by means of alkali-activation with blast furnace slag. Reaction kinetics, workability, mechanical properties and autogenous shrinkage of alkali-activated slag and glass wool were comprehensively studied. Results indicated an optimal modulus (SiO<sub>2</sub>/Na<sub>2</sub>O) of the activator related...journal article 2021
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Li, Z. (author), Delsaute, Brice (author), Lu, Tianshi (author), Kostiuchenko, A. (author), Staquet, Stéphanie (author), Ye, G. (author)This study aims to compare the developments of mechanical properties and autogenous shrinkage related properties of alkali-activated materials-based concrete (AC) and ordinary Portland cement-based concrete (OC) against curing age and degree of reaction. Temperature Stress Testing Machines are utilized to monitor the evolution of the internal...journal article 2021
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Bakhit, Babak (author), Dorri, Samira (author), Kooijman, A.M. (author), Wu, Zhengtao (author), Lu, Jun (author), Rosen, Johanna (author), Mol, J.M.C. (author), Hultman, Lars (author), Petrov, Ivan (author), Greene, J. E. (author), Greczynski, Grzegorz (author)Refractory transition-metal (TM) diborides have high melting points, excellent hardness, and good chemical stability. However, these properties are not sufficient for applications involving extreme environments that require high mechanical strength as well as oxidation and corrosion resistance. Here, we study the effect of Cr addition on the...journal article 2021
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Ren, Jie (author), Sun, Hongfang (author), Li, Qun (author), Li, Z. (author), Ling, Li (author), Zhang, Xiaogang (author), Wang, Yanshuai (author), Xing, Feng (author)One-part alkali-activated slag (AAS) binders are more promising in large-scale constructions because one-part mixing procedure is safer and easier to handle compared to normal two-part method. Thus, this study aims at investigating different properties of one-part AAS binders and control samples prepared using the two-part method. Experimental...journal article 2021
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Chanteli, Angeliki (author), Bandaru, Aswani Kumar (author), Peeters, D.M.J. (author), O'Higgins, Ronan M. (author), Weaver, Paul M. (author)Laser-assisted automated tape placement (LATP) in-situ consolidation of thermoplastic composites offers an efficient solution for production of large, high performance composite structures. The present work investigates laser repass treatment as a method of enhancing surface roughness and mechanical properties of LATP processed CF/PEEK...journal article 2020
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Fleischer, J.C. (author), Diehl, J.C. (author), Wauben, L.S.G.L. (author), Dankelman, J. (author)Three-dimensional (3D) printing may be a solution to shortages of equipment and spare parts in the healthcare sector of low- and middle-income countries (LMICs). Polylactic acid (PLA) for 3D printing is widely available and biocompatible, but there is a gap in knowledge concerning its compatibility with chemical disinfectants. In this study, 3D...journal article 2020
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Kongshaug, Simen Sørgaard (author), Oseland, Oddbjørn (author), Kanstad, Terje (author), Hendriks, M.A.N. (author), Rodum, Eva (author), Markeset, Gro (author)The alkali silica reaction (ASR) in concrete causes internal localized swelling and micro cracking, which result in expansion and correlated deterioration of the concrete material. The stress state of the concrete is known to affect expansion due to ASR, with an anisotropic stress state giving rise to anisotropic expansion. Similarly, the...journal article 2020
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Ali, Md Kawsar (author), Miah, Md Jihad (author), Paul, Suvash Chandra (author), Babafemi, Adewumi John (author), Kong, Sih Ying (author), Šavija, B. (author)This study evaluates the mechanical, durability, and residual compressive strength (after being exposed to 20, 120, 250, 400 and 600 °C) of mortar that uses recycled iron powder (RIP) as a fine aggregate. Within this context, mechanical strength, shrinkage, durability, and residual strength tests were performed on mortar made with seven...journal article 2020
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Fu, J. (author), van Slingerland, J. (author), Brouwer, J.C. (author), Bliznuk, Vitaliy (author), Richardson, I.M. (author), Hermans, M.J.M. (author)Pulsed laser beam welding was used successfully to join the oxide dispersion-strengthened (ODS) Eurofer steel. The joining was conducted with a laser power of 2500 W and a pulsed duration of 4 ms. With the filler material being used, a minor material loss and microvoids were observed in the joint. The microstructure of the fusion zone...journal article 2020
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Li, Z. (author), Wyrzykowski, Mateusz (author), Dong, H. (author), Granja, José (author), Azenha, Miguel (author), Lura, Pietro (author), Ye, G. (author)In this study, internal curing by superabsorbent polymers (SAP) is utilized to mitigate self-desiccation and autogenous shrinkage of alkali-activated slag (AAS) pastes. Absorption and desorption kinetics of SAP incorporated in AAS pastes were studied with X-ray tomography. Internal curing delayed the peak of the rate of heat liberation but...journal article 2020
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Kies, Fabian (author), Ikeda, Yuji (author), Ewald, Simon (author), Schleifenbaum, Johannes H. (author), Hallstedt, Bengt (author), Körmann, F.H.W. (author), Haase, Christian (author)Density functional theory (DFT) calculations were performed on Al<sub>x</sub>C<sub>y</sub>CoFeMnNi multi-principal element alloys (MPEAs) to understand the influence of Al and C on the stacking-fault energy (SFE). C addition to CoFeMnNi resulted in increased SFE, while it decreased in Al-alloyed CoFeMnNi. For experimental verification, Al<sub...journal article 2020
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Li, Z. (author), Zhang, Shizhe (author), Liang, X. (author), Granja, José (author), Azenha, Miguel (author), Ye, G. (author)This study investigates the influences of internal curing on reducing the autogenous shrinkage of alkali-activated slag/fly ash (AASF) paste. The influences of internal curing with superabsorbent polymers (SAPs) on the reactions and microstructure of AASF paste are investigated. It is found that the SAPs absorb liquid mainly before the...journal article 2020
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Kiani Khouzani, M. (author), Bahrami, A. (author), Yazdan Mehr, M. (author)This paper aims at studying microstructure and mechanical properties of spark plasma sintered (SPSed) Stellite®-6 cobalt-based superalloy. SPS is a sintering technique, based on a relatively fast resistance heating using a pulsed current. Fast sintering process, associated with minimum grain growth, results in excellent mechanical properties....journal article 2019
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Fan, J. (author), Wang, Zhen (author), Zhang, Xunwei (author), Deng, Zentao (author), Fan, Xuejun (author), Zhang, Kouchi (author)In a high-power white light emitting diode (LED) package, the phosphor/silicone composite is typically used for photometric and colorimetric conversions, ultimately producing the white light. However, the phosphor/silicone composite is always exposed under harsh environments with high temperature, high blue light irradiation and high moisture...journal article 2019
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El-Dessouky, H. M. (author), Saleh, M. (author), Gautam, M. (author), Han, G. (author), Scaife, R. J. (author), Potluri, P. (author)Tailored fibre placement (TFP) is an embroidery-based technology that allows the fibre tows to be placed exactly where they are most needed for structural performance and stitched into position on a compatible textile or polymer substrate. In this study commingled carbon-nylon fibre tows were utilised to produce thermoplastic cross-ply net...journal article 2019
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Grazioli, D. (author), Verners, O. (author), Zadin, Vahur (author), Brandell, Daniel (author), Simone, A. (author)We analyze the effects of mechanical stresses arising in a solid polymer electrolyte (SPE) on the electrochemical performance of the electrolyte component of a lithium ion battery. The SPE is modeled with a coupled ionic conduction-deformation model that allows to investigate the effect of mechanical stresses induced by the redistribution of...journal article 2019
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Qu, L. (author), Bei, G. (author), Stelzer, Bastian (author), Rueß, Holger (author), Schneider, Jochen M. (author), Cao, Dianxue (author), van der Zwaag, S. (author), Sloof, W.G. (author)Almost pure (Ti<sub>1-x</sub>Zr<sub>x</sub>)<sub>3</sub>SiC<sub>2</sub> MAX phase solid solutions with x ranging up to 0.17 were synthesized at temperatures in the range of 1450–1750 °C with reactive Spark Plasma Sintering (SPS). The zirconium partially replaces the M-element titanium of the Ti<sub>3</sub>SiC<sub>2</sub> MAX phase up to x...journal article 2019