Gearbox is widely used in industrial and military applications. Due to high service load,
harsh operating conditions or inevitable fatigue, faults may develop in gears. If the gear …

Dynamic characteristics of cracked gear systems, also known as cracked-gear rotor systems,
have received increasing interests among industry and academy in the past two decades …

Limited condition monitoring data are recorded with label information in practice, which
make the fault identification task more challenging. A semi-supervised learning (SSL) …

Gear tooth profile deviations are usually inevitable due to the application of intentional tooth
profile modification, the existence of undesired gear manufacturing errors and the tooth …

Time-varying mesh stiffness and gear transmission errors are the major excitations to gear
dynamics system. How to calculate them more accurately and efficiently has attracted much …

Considering the realistic spalling morphology obtained from the fatigue experiment, a novel
dynamic model for spalled gear pairs is established in this paper. Loaded tooth contact …

Based on the finite element theory and the loaded tooth contact analysis, an analytical-finite-
element model considering the complex foundation types and the crack propagation paths is …

Due to the effects of gear flexibility, the extended tooth contact (ETC) can appear, which is
the phenomenon that the incoming tooth pair gets into contact ahead of the theoretical start …

Considering the influence of roughness on the normal contact stiffness of gears, a fractal
contact model suited for gear pair contact has been established. On the basis of modified …

The main purpose of condition monitoring in gear systems is to facilitate condition-based
maintenance (CBM) by detecting the degradation of components, eg gear teeth, before the …