Fatigue Life Assessment on an Automotive Engine Exhaust Valve
2006-01-0977
04/03/2006
- Event
- Content
- This paper presents the fatigue life assessment work on an engine exhaust valve subject to specified durability test cycles. Using valve stress (or strain) data from finite element methods, material fatigue data, and fatigue prediction models (i.e. SN approach and εN approach based on multi-axial Brown-Miller critical plane method), the valve life estimates were obtained and compared with the observed test data, which were in reasonable agreement. In addition, crack growth approach was used and valve crack propagation life including early stage growth was computed. Finally, a general discussion on three life estimates (i.e. fatigue total life, strain-life and crack growth life) was provided with their governing equation, supported by three real cases.
- Pages
- 12
- Citation
- Pang, M., Smith, S., Herman, R., and Buuck, B., "Fatigue Life Assessment on an Automotive Engine Exhaust Valve," SAE Technical Paper 2006-01-0977, 2006, https://doi.org/10.4271/2006-01-0977.