At present, electromagnetic induction quenching and nitriding are two commonly used surface strengthening approaches applied in improving the strength of steel parts. In this paper, a comparative study was proposed to research effect these technologies fatigue crankshaft. First modified statistical analysis approach limit load obtain distribution load. Then types crankshafts were selected be ob...

Fault Diagnosis for Crankshaft Bearing in Diesel Engine Based on Bispectrum Analysis Fuzhou Feng, Aiwei Si* b , Pengcheng Jiang Department of Mechanical Engineering, Academy of Armored Force Engineering, No.21, Dujiakan District, Fentai area, Beijing 100072, China Military Transportation Department, Military Transportation University, No. 1, Dongjuzi District, Hedong area, Tianjin 300161, China...

Introduction. The presses are powered machines having stationary beds and slides (rams) which have controlled sliding motion towards away from the beds, guided by frames. Metal can be worked in power press a wide verity of ways like punching, shearing, forming, etc. Crankshaft is one basic components for transmission, transmits rotary to mechanical press. It around this element that all stresse...

In this paper, the strength analysis and fatigue life calculation of multi-component coupling crankshaft, connecting rod engine body highly strengthened single cylinder diesel are carried out. The stress in two working cycles is calculated by transient dynamics, analyzed based on third theory firstly; Then, accuracy results verified experiment crankshaft reduced scale model static body; Finally...

Torsional vibration responses of an engine crankshaft-gearbox coupled system with misfire and breathing slant crack are investigated in this paper. The crankshaft is modelled by lumped mass method its dynamic equations deduced based on Lagrange equation. Both the time varying mesh stiffness gearbox composing a pinion gear response-dependent shaft element evaluated. Natural frequencies healthy c...