REFINED STATISTICAL APPROACH TO THERMAL FATIGUE LIFE PREDICTION
Result-scattering inherent to thermal fatigue and duration of a thermal fatigue cycle lead to a lack of experimental results. A new approach has been developed that permits the determination of a relevant stress intensity factor exponent n with a minimum testing sample number. From knowledge of the...
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| Published in: | Journal of materials science letters Vol. 27; no. 20; pp. 5539 - 5546 |
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| Main Authors: | , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
01-01-1992
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| Online Access: | Get full text |
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| Summary: | Result-scattering inherent to thermal fatigue and duration of a thermal fatigue cycle lead to a lack of experimental results. A new approach has been developed that permits the determination of a relevant stress intensity factor exponent n with a minimum testing sample number. From knowledge of the distribution function of artificial cracks, the analytical formula of the failure probability F(N) can be completely determined. Thus, it is possible to calculate n from a correlation of F(N) with experimental results obtained for only one temperature difference. Correlations between theoretical curves F(N) and experimental results, conducted for two temperature differences, lead to the same value of n. This and the good agreement between the experimental points and the theoretical curves validate this new approach. 9 refs. |
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| Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 content type line 23 ObjectType-Feature-1 |
| ISSN: | 0261-8028 |