Collection: research
(1 - 20 of 204)

Pages

document
Derelioglu, Z. (author), Ponnusami, S.A. (author), Turteltaub, S. (author), Van der Zwaag, S. (author), Sloof, W.G. (author)
Crack healing in ceramic thermal barrier coatings (TBCs) may be realized by embedding Mo-Si based particles in the thermal barrier coating. Upon cracking, these particles are exposed to oxygen that permeates through the top layer and the crack gap is filled with SiO2 which is produced from oxidation at high temperature. Due to its amorphous...
conference paper 2013
document
Sottos, N.R. (author), Kang, S. (author), Jones, A.E. (author), Okman, O. (author), Moore, J.S. (author), White, S.R. (author)
Abstract only.
conference paper 2013
document
Coope, T. (author), Bond, I. (author), Trask, R. (author), Wass, D. (author)
High performance, damage tolerant fibre reinforced polymer (FRP) composite materials are currently required to demonstrate no propagation of any sub-surface structural micro-cracking when under service load, thereby encouraging overdesign and limiting the inherent lightweight nature of such a material. By incorporating selfhealing...
conference paper 2013
document
Berger, O. (author), Leyens, C. (author), Heinze, S. (author), To Baben, M. (author), Schneider, J.M. (author)
Self-healing materials allow for a design concept based on damage management where damage that is inflicted during operation can be healed autonomously. It has been shown that the Mn+1AXn phases Ti3AlC2, Ti2AlC and Cr2AlC exhibit autonomous self-healing behaviour. Cracks are filled and hence healed by oxidation products of the M and A elements...
conference paper 2013
document
Gruyaert, E. (author), Van Tittelboom, K. (author), De Backer, P. (author), Moerman, W. (author), Dekeyser, B. (author), De Belie, N. (author)
Sandwich panels are prefabricated, insulated concrete wall elements, which are sensitive to thermal cracking due to their composition (concrete outer cladding – insulation – concrete inner cladding). During hot days, the temperature of the outer concrete layer can rise up to ~ 60°C and the temperature difference between inner and outer layer...
conference paper 2013
document
Everitt, D.T. (author), Coope, T.S. (author), Bond, I.P. (author), Trask, R.S. (author), Wass, D.F. (author)
Self-healing polymers typically feature monomer and catalyst either dispersed within a host matrix, or encapsulated within hollow vessels. Unprotected highly active catalysts, sensitive to air and moisture, can readily react with amine cross-linking agents during the cure of reactive prepolymers e.g. epoxy resins. Therefore, catalysts stable to...
conference paper 2013
document
Baldi, A. (author), Grande, A.M. (author), Bose, R.K. (author), Airoldi, A. (author), Garcia Espallargas, S.J. (author), Di Liandro, L. (author), Van der Zwaag, S. (author)
Several polymeric systems with intrinsic Self-Healing (SH) capabilities have been reported in literature. Many of them showed healing upon contact across the crack interface. Different parameters such as contact time, temperature, pressure or chemical activity determine the degree of healing obtained. In this work, a numerical simulation of the...
conference paper 2013
document
Bultreys, T. (author), Masschaele, B. (author), Hillewaere, X. (author), Dierick, M. (author), Van Loo, D. (author), Van Hoorebeke, L. (author), Cnudde, C. (author)
This work presents recent advancements in X-ray micro-computed tomography (XRMCT) of self-healing materials at Ghent University’s Centre for X-ray Tomography (UGCT). Results of XRMCT imaging in a self-healing polymer system are shown to demonstrate the use of XRMCT in self-healing studies. Furthermore, two new XRMCT scanners are presented. The...
conference paper 2013
document
Diba, M. (author), Löwik, D.W.P.M. (author), Van Hest, J.C.M. (author), Jansen, J.A. (author), Leeuwenburgh, S.C.G. (author)
Noncovalent bonds are often reversible and sensitive to external stimuli. Although noncovalent interactions are inherently weak and generally perceived as inadequate to construct macroscopic materials of sufficient integrity and cohesion, the emergence of nanotechnology has shown that the intrinsic weakness of noncovalent interactions can be...
conference paper 2013
document
Carabat, A.L. (author), Van der Zwaag, S. (author), Sloof, W.G. (author)
Easy crack propagation in oxide ceramic coatings limits their application in high temperature environment (e.g. such as engines and gas turbine components) [1]. In order to overcome this problem, incorporation of sacrificial particles into an oxide ceramic coating may be a viable option. Particles of silicon compounds, such as: Si3N4, SiC, MoSi2...
conference paper 2013
document
Hilloulin, B. (author), Grondin, F. (author), Matallah, M. (author), Loukili, A. (author)
Cracks, caused by shrinkage or external loading, reduce the durability of concrete structures as aggressive substances can easily enter in the capillary network of the cementitious matrix. Natural ‘autogenous’ healing ability of concrete by further hydration or precipitation has been studied experimentally for many years. Autogenous healing of...
conference paper 2013
document
Nanko, M. (author), Maruoka, D. (author)
Abstract only.
conference paper 2013
document
Maruoka, D. (author), Nanko, M. (author)
Abstract only.
conference paper 2013
document
Palin, D. (author), Wiktor, V. (author), Jonkers, H.M. (author)
Marine concrete structures are exposed to one of the most hostile of natural environments. Many physical and chemical phenomena are usually interdependent and mutually reinforcing in the deterioration of marine exposed concrete: expansion and microcracking due to physical effects increases concrete permeability paving the way for harmful...
conference paper 2013
document
Qiu, J. (author), Schlangen, H.E.J.G. (author), Van de Ven, M.F.C. (author), Shirazi, M. (author)
Reclaimed Asphalt (RA) is one of the largest fractions of raw materials used in road construction today. Probably over 90% of the total RA in the Netherlands is being reused in new asphalt constructions. RA contains aggregates coated with very hard bitumen (penetration grade of 10-20). During service, the bituminous binder loses its flexibility...
conference paper 2013
document
Lucas, S.S. (author), Nellesen, A. (author), Von Tapavicza, M. (author)
In the last decade, an increasing attention has been given to the development of repairing capabilities in materials, with an emphasis in specific strategies that can promote self-healing, with or without external triggers. Self-healing has opened several new possibilities, especially in applications where long-term reliability is demanded and...
conference paper 2013
document
León, E.J. (author), Koleva, D.A. (author), Jonkers, H.M. (author), Mol, J.M.C. (author), Terryn, H. (author), Van Breugel, K. (author)
Impressed current cathodic protection (CP) based on pulse technology has been proven to be a more efficient and effective alternative of traditional CP for reinforced concrete applications. Essentially, the superiority of pulse CP is in achieving the required steel polarization with otherwise reduced side effects (e.g. influence on bond strength...
conference paper 2013
document
Wang, X. (author), Xing, F. (author), Zhang, M. (author), Han, N. (author), Qian, Z. (author)
A new type of self-healing cementitious composites by using organic microcapsules is designed in Guangdong Key Laboratory of Durability for Coastal Civil Engineering, Shenzhen University. For the organic microcapsules, the shell material is urea formoldehyde (UF), and the core healing agent is Epoxy. The effect of organic microcapsules on...
conference paper 2013
document
Castelnovo, L. (author), Grande, A.M. (author), Di Landro, L. (author), Sala, G. (author), Giacomuzzo, C. (author), Francesconi, A. (author)
The ability of a material to self-repair is particularly important in remote or hostile environment applications, where an external intervention is nearly impossible. For example, the development of self-healing (SH) materials for space applications could dramatically improve spacecraft performances and liability, with significant enhancement of...
conference paper 2013
document
Tye, J. (author), Hansen, C. (author)
Abstract only.
conference paper 2013
Collection: research
(1 - 20 of 204)

Pages