Search Results

The main challenge faced was the highly corrosive nature of copper, which was overcome by coating it with Graphene Oxide (GO) by the electrophoretic deposition process. Tests were performed using three EGR coolers made of stainless steel, copper, and GO-coated copper.

In addition, the nanostructure analysis of primary particles (graphene layer length, tortuosity and separation distance) was also investigated by using high resolution transmission microscopy (HRTEM) and an image analysis algorithm. ...Such primary particles are characterized by short mean graphene layer length (Lmean ≈ 0.5 nm) and an unordered configuration resulting in an increased separation distance (Dmean ≈ 1 nm). ...Conversely, inhomogeneous mixtures result in increased formation of primary particles showing long, extended and more ordered graphene (Lmean ≈ 0.55 nm, Dmean = 0.4 nm), which in turn lead to low soot reactivity (Tmax ≈ 615°C).

In this article, Co9S8 nanoparticles were embedded in reduced graphene oxide (rGO) via a simple anneal approach as high efficient and stable electrodes for SCs. ...The Co9S8 nanoparticles were inserted tightly between the rGO layers due to strong intermolecular forces, preventing the cluster in reduction process of rGO from graphene oxide (GO). The rGO provides the conductive network for Co9S8 and shortens the ion diffusion paths, improving rate performance and enhancing the stability of the electrode material.

The reaction chamber contains reactants of copper oxides (0.75-0.80 grams) as catalysts and graphene oxide (115-120 grams) as reducing agents in powder form. The reaction has been performed in a closed atmosphere for a period of eight to ten hours and the temperature is maintained at 300°C approximately.

In this article, the dependence of the soot oxidation rate upon nanostructure, namely the length, separation distance and curvature of the graphene segments is shown. Soots possessing graphitic, fullerenic or amorphous nanostructure are used for this comparison.

In addition, to analyze the nanostructure of the particles, an analysis program is built based on MATLAB software, which is able to obtain the fringe separation distance, fringe length, and fringe tortuosity parameters of primary particles, and has been verified by the multilayer graphene interlayer distance. It is found that soot is mainly composed of tens of primary particles in the form of tree-like at HAB (height above burner) = 30 mm.

The fringe separation slightly decreased towards downstream in the flame, likely due to annealing of carbon graphenes in increasing temperature confirmed by in-flame thermocouple measurements. The variations in fringe separation did not show significant difference with fuel aromatic contents.

Oil debris monitoring in aero engines In a gas turbine engine, small particles or "chips" are generated at the point of wear, serving as an advanced warning that catastrophic failure will occur if the wear is not addressed. Health monitoring systems, such as oil debris monitoring, are used to find these small particles so that the wear can be resolved before it's too late. Indigenous powertrain development Customer needs and expectations on drivability, fuel economy, and safety has pushed Indian and multinational OEMs to think about the development of powertrains and gearboxes for local needs with global standards. The next wave of crash simulation As computing speed has improved and software itself has made significant speed and performance gains with each release, modeling tools are now quick enough to build high-quality, large, high-detail vehicle models in a very efficient manner.

Propulsion Fanjet Evolution - the Next Steps Composites Dry Drilling Composites Using Carbon Dioxide Cooling

Thousands of engineers researchers and decision makers from across the industry will converge online to collaborate on the shift to mobility in the first ever WCX Digital Summit