Gearbox plays a vital role in a wide range of mechanical power transmission systems in
many industrial applications, including wind turbines, vehicles, mining and material handling …

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 …

Fault diagnosis of rolling bearing is crucial for safety of large rotating machinery. However, in
practical engineering, the fault modes of rolling bearings are usually compound faults and …

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 …

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 …

The occurrence of a crack could change the gear mesh stiffness and consequently influence
gear vibration properties. Cracks may occur on the tooth root and tooth surface, but the …

As a result of gear body flexibility, fillet foundation stiffness is defined as the meshing force
needed for unit gear body-induced tooth deflections. However, it has long been …

This paper concentrates on the gear tooth crack detection by investigating the effects of tooth
crack on the vibration behaviors of a nonlinear spur gear system. Firstly, an analytical tooth …

The data-driven time-frequency analysis (DDTFA)-method-based initial phase selection
directly influences the convergence and calculation results of the algorithm. The central …

Based on our previous work (Ma et al., 2014, Engineering Failure Analysis, 44, 179–194),
this paper presents an improved analytical model (IAM) for the time-varying mesh stiffness …