Life and Failure of Aircraft Wheels _ A Review

2019 4th International Conference on Mechanical, Manufacturing, Modeling and Mechatronics;2019 4th International Conference on Design Engineering and Science

工业技术（总论）;机械制造

Rohit, Benjamin^1 ; Gowda, Punya D.^1 ; Nagaraju, Nandini B.^1 ; Meghana, S.^1

Department of Aerospace Engineering, Rashtreeya Vidyalaya College of Engineering, India^1

关键词: Fatigue fracture;    Fatigue-crack nucleation;    Gear components;    High cycle fatigue;    Inspection technique;    Performance and reliabilities;    Regular inspections;    Vertical velocity;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/520/1/012002/pdf
DOI  :  10.1088/1757-899X/520/1/012002

学科分类：工业工程学

来源: IOP

【 摘 要 】

Aircraft wheels mounted with tires support the entire weight of an aircraft during ground operations and landing. Very stringent demands are placed on performance and reliability of landing gear components. The present day wheel is a split type forged aluminium alloy with an internal cold mounted bearing and the brake design energies have increased two fold over the last few decades. The check up for integrity of aircraft wheels are carried out using various techniques by trained and competent personals at regular inspection intervals. From literature we can see that most failures of aircraft rims have been due to high cycle fatigue. Corrosion has played a significant role in fatigue crack nucleation. Braking and high landing loads contribute to the fatigue crack growth. Aircraft's vertical velocity, runway friction coefficient and the asphalts elastic modulus play a significant role in the crack propagation in aircraft wheels. Pitting also serves as a site for stress concentration and hence, nucleation of fatigue cracks. Over-inflation or under-inflation can cause an increase in the stress levels on aircraft wheels. The present review critically analyses the published work on the fatigue fracture of aircraft wheel rim, current inspection techniques to detect fatigue crack nucleation and growth.