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Advanced Methods for Diesel Component Life Prediction
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Sector:
Event:
Marine Propulsion Technology
Language:
English
Abstract
The highly stressed components of internal combustion engines are subject to catastrophic failure by fatigue crack propagation. Prediction of the fatigue life of components is possible by following a program of analysis and nondestructive inspection. The analysis comprises determination of loads and forces including inertial contributions, a stress analysis that is usually conducted ‘ using the finite element method, a fracture mechanics analysis to determine the possibility of fatigue crack initiation and/or the rate of fatigue crack propagation, and the selection of appropriate inspection criteria.
This methodology has been applied to medium-speed diesel engines of the types used for marine propulsion and electrical generation. Examples of the analysis are discussed for three major components - crankshaft, piston, and connecting rod - and one minor component - the connecting rod bearing shell.
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Citation
Swanger, L., Harris, D., Johnston, P., and Derbalian, G., "Advanced Methods for Diesel Component Life Prediction," SAE Technical Paper 860885, 1986, https://doi.org/10.4271/860885.Also In
Crankshaft and Component Adequacy-Update of Analysis and Testing Developed for Nuclear Standby Engines
Number: SP-0714; Published: 1987-05-01
Number: SP-0714; Published: 1987-05-01
References
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