Failure analysis of helical gear pinion

Ghosh, Debashis; Mondal, Abhijit; Hussain, Nasir; De, Sanjib Kumar; Ray, S.; Subramanian, Chidambaram

doi:10.1016/j.matpr.2022.05.335

Cited by 1 publication

(2 citation statements)

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“…In a one-stage gear system, an analytical dynamic model with 6 degrees of freedom (DOF) can define two translational directions and one rotational direction for the pinion and the gear. The schematics of the model and its equations of motion as detailed in [36] are presented in Figure 2 and Equations ( 1)- (6).…”

Section: Analytical Models Of Healthy Gearsmentioning

confidence: 99%

“…The design of gears incorporates a high factor of safety to ensure long service life [1]. However, gears are still reported to fail in active service which can lead to operational downtime and economic losses [2][3][4][5][6][7][8][9][10][11][12][13]. The reasons for failure in gears before the end of the specified service life can broadly be categorised into three categories: Fault in design (like a low factor of safety, gear geometry errors and poor material selection), Fault in manufacturing (like metallurgical inclusions, improper heat treatment and machining marks) and Fault due to application (like installation errors and poor lubrication) [3].…”

Section: Introductionmentioning

confidence: 99%

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Mathematical Complexities in Modelling Damage in Spur Gears

Oreavbiere,

Khan

2024

Machines

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Analytical modelling is an effective approach to obtaining a gear dynamic response or vibration pattern for health monitoring and useful life prediction. Many researchers have modelled this response with various fault conditions commonly observed in gears. The outcome of such models provides a good idea about the changes in the dynamic response available between different gear health states. Hence, a catalogue of the responses is currently available, which ought to aid predictions of the health of actual gears by their vibration patterns. However, these analytical models are limited in providing solutions to useful life prediction. This may be because a majority of these models used single fault conditions for modelling and are not valid to predict the remaining life of gears undergoing more than one fault condition. Existing reviews related to gear faults and dynamic modelling can provide an overview of fault modes, methods for modelling and health prediction. However, these reviews are unable to provide the critical similarities and differences in the single-fault dynamic models to ascertain the possibility of developing models under combined fault modes. In this paper, existing analytical models of spur gears are reviewed with their associated challenges to predict the gear health state. Recommendations for establishing more realistic models are made especially in the context of modelling combined faults and their possible impact on gear dynamic response and health prediction.

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Section: Analytical Models Of Healthy Gearsmentioning

confidence: 99%