Materials Literature
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Lean burn aero-engine combustors usually exploit advanced prefilming airblast injection systems in order to promote the formation of highly homogeneous air-fuel mixtures with the main aim of reducing NOx emissions. The combustion process is strongly influenced by the liquid fuel preparation and a reliable prediction o…
Corrosion is among the principal causes of damage and failure in pipeline systems and is linked to various economic and environmental risks. The consideration of corrosion phenomena at the early stages of pipeline system design can help quantify these risks and include risk reduction alternatives in the analysis. The…
This paper explores the foundation of fabric mechanics and reveals that the discipline was pioneered in the early 1900s during the era of the Zeppelins, not by textile but by aeronautical engineers who wanted to predict the behavior of the outer shell of airships covered by fabric. The work of Haas is given particular…
Carbon/carbon( C / C ) composites were bonded with a phosphate adhesive prepared from H 3 PO 4 (orthophosphoric acid) and A l( OH ) 3 as the matrix and S i and C u O as the inorganic fillers. The mechanical properties were tested at room temperature after the bonded specimens were treated from RT to 1500°C. The result…
The work analyses intra-jet distances during electrospinning from a free surface of water based poly(vinyl alcohol) solution confined by two thin metallic plates employed as a spinning electrode. A unique computer vision system and digital image processing were designed in order to track position of every polymer jet.…
Foreign object damage in gas turbines presents serious safety and financial concerns. As the aerospace industry draws closer to implementing ceramic matrix composites (CMCs) in gas turbines, the corresponding behavior in these materials after such events needs to be understood. To address this requirement, several sil…
This paper investigates the macroscopic behaviour of an axially loaded discrete granular system from a stability perspective. The granular system comprises uniform grains that are elastically connected with some bending and shear interactions and confined by some elastic supports. This structural system can then be cl…
Abstract In the present work a parametric investigation on hydrogen evolution by hydrolysis of ball‐milled Al/graphite composite materials with water is reported. The results showed that the addition of NaCl produced some favorable effects on the completeness of the Al hydrolysis reaction with water, particularly at l…
Reactive sputtering by high power impulse magnetron sputtering (HiPIMS) and direct current magnetron sputtering (DCMS) of a Zr target in Ar/H2 plasmas was employed to deposit Zr-H films on Si(100) substrates, and with H content up to 61 at. % and O contents typically below 0.2 at. % as determined by elastic recoil det…
Despite promising advantages, the use of carbon nanotubes (CNTs) for biomedical applications is limited due to their low biocompatibility. This study presents the modification of CNTs by plasma polymerization using two different monomers, pentafluorophenyl methacrylate (PFM) and allylamine (AA). We demonstrated that b…
The solid-state MU8Q17 compounds ScU8S17, CoU8S17, NiU8S17, TiU8Se17, VU8Se17, CrU8Se17, CoU8Se17, and NiU8Se17 were synthesized from the reactions of the elements at 1173 or 1123 K. These isostructural compounds crystallize in space group C2h3 - C2/m of the monoclinic system in the CrU8S17 structure type. X-ray absor…
Considering the difference of energy bands in graphene and silicene, we put forward a new model of the graphene-silicene-graphene (GSG) heterojunction. In the GSG, we study the valley polarization properties in a zigzag nanoribbon in the presence of an external electric field. We find the energy range associated with…
This study examines the interfacial debonding behavior of self-healing fiber-reinforced polymers and the performance of repair of interfacial debonding. Self-healing is accomplished by incorporating a microencapsulated healing agent and a catalyst within a coating layer on the surface of the fiber strand. Single edge-…
We report the influence of photoisomerization on the splay (K11) and bend (K33) elastic constants in a bent-core nematic doped with a small amount of a calamitic photoactive compound. Trans-cis isomerization of the latter compound results in a large decrease (factor of ∼3 for K33) of both the moduli, and K33 becoming…
Many experiments have revealed that the surfaces of graphene and graphene‐like structures can play an active role as a host surface for clusterization of transition metal atoms. Motivated by these observations, we investigate theoretically the adsorption, diffusion and magnetic properties of Pt clusters on three diffe…
Zinc titanate (ZnTiO3) thin films grown by atomic layer deposition with ilmenite structure have recently been identified as an excellent solid lubricant, where low interfacial shear and friction are achieved due to intrafilm shear velocity accommodation in sliding contacts. In this Letter, high resolution transmission…
To enable graphene oxide (GO) flakes for application based on solution processable technology, we show that they can be self-assembled from solution on flexible substrate driven by a Coulomb interaction with the self-assembled monolayer (SAM). Field-effect transistors exhibit a high hole mobility around 14 cm2/V·s aft…
Important requirements for exogenous dyes or contrast agents in magnetic resonance imaging (MRI) include an effective concentration of paramagnetic or superparamagnetic ions at the target to be imaged. We report the concise synthesis and characterization of several new enantiopure bifunctional derivatives of (α(1)R,α(…
Using La0.67Ca0.33MnO3 (LCMO) and CaRuO3 (CRO) as components, the single-layer films, bilayers, trilayers, and superlattices were fabricated on NdGaO3 (110) substrates. These epitaxial structures show quite different Curie temperature (TC) depending on the LCMO layer thickness (x), especially in the low x region. For…
To explore the transport properties of polycrystalline graphene under large tensile strain, a strain device has been fabricated using piezocrystal to load local strain onto graphene, up to 22.5%. Ionic liquid gate whose capability of tuning carrier density being much higher than that of a solid gate is used to survey…