Gearbox is a very complex mechanical system that can generate vibrations from its various elements such as gears, shafts, and bearings. Transmission path effect, signal coupling, and noise contamination can further induce difficulties to the development of diagnostic system for a gearbox. This paper introduces a novel information reconstruction approach to clustering and diagnosis of gearbox si...

The use of magnetofluidic seals are a promising direction in sealing rotating shafts wind power plants. Magnetofluidic characterized by high tightness, simplicity the design, low losses friction. Magnetic fluid seal shaft consists ring magnet and two concentrators magnetic field, forming with narrow gap which retained field is hermetic seal. forces provide balance volume under impact pressure d...

When manufacturing large shafts with multi-specification and small-batch production, both the conventional forging rolling process bring a high tooling cost due to heavy press or large-sized specialized roller. In this study, novel flexible skew (FSR) is proposed by adding degrees of freedom rollers as compared typical process. Since each FSR has three (circle rotating, radial feeding), can be ...

This paper investigates the bending vibration of rotating single-walled carbon nanotubes (SWCNTs) based on nonlocal theory. To this end, the rotating SWCNTs system modeled as a beam with a circular cross section and the Euler-Bernoulli beam theory (EBT) is applied with added effects such as rotary inertia, gyroscopic effect and rotor mass unbalance. Using nonlocal theory, two coupled sixth orde...

In tissue from area CA1 of the rat hippocampus prepared for electron microscopic study by thin-sectioning, asymmetric synaptic junctions were found on dendritic spines, spiny dendritic shafts, and non-spiny dendritic shafts. In freeze-fractured preparations, aggregates of large particles were found on the extracellular half of the postsynaptic membrane at each of these synaptic junctions. Parti...