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Fixed Emitting Point Method-An Accelerated Test Program to Determine Fatigue Limit of Automotive Components
Technical Paper
2004-01-1646
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The traditional Up And Down Method (UADM) is generally taken as a standard mean to determine the fatigue limit of an automotive component. Its main draw back is extremely time-consuming. A number of other methods can reduce testing time to some extent, but the applications of those results are limited, since they are not comparable with that of UADM. Based on certain preconditions and assumptions, an accelerated testing method, named Fixed Emitting Point Method, has been developed. The applicability and effectiveness of this method have been verified by bending fatigue test of crankshaft and tension-compression fatigue test of connecting rod. Results showed that the errors in the mean fatigue limit values are generally less than 5% while the number of cycles of a test can be reduced by about 90% in comparison with the data given by UADM.
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Citation
Feng, M. and Chen, Y., "Fixed Emitting Point Method-An Accelerated Test Program to Determine Fatigue Limit of Automotive Components," SAE Technical Paper 2004-01-1646, 2004, https://doi.org/10.4271/2004-01-1646.Also In
Safety Test Methodology, and Accelerated Testing and Vehicle Reliability
Number: SP-1879; Published: 2004-03-08
Number: SP-1879; Published: 2004-03-08
References
- A Guide for Fatigue Testing and the Statistical Analysis of Fatigue Data ASTM STP 91A 1964
- Wegscheid M.M. Explanation of Fatigue Testing and Analysis Procedure Using SAFL Method Cummins Report 0796-85033 July 1985
- Feng Meibin Li Manliang “Development of a Computerized Electrodynamic Resonant Fatigue Test Machine and Its Applications to Automotive Components” SAE paper 2003-01-0951