Multi-challenge aspects in fatigue due to the combined occurrence of multiaxiality, variable amplitude loading, and size effects
The three major issues which contribute to uncertainties in fatigue life estimations are the limited transferability of material data obtained in a laboratory for describing the fatigue behavior of components, the lack of damage accumulation rules to realistically take into account the effects of...
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| Main Author: | |
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| Format: | Article |
| Language: | English |
| Published: |
Gruppo Italiano Frattura
2015-07-01
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| Series: | Fracture and Structural Integrity |
| Subjects: | |
| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero33/numero_33_art_31.pdf |
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| Summary: | The three major issues which contribute to uncertainties in fatigue life estimations are the limited
transferability of material data obtained in a laboratory for describing the fatigue behavior of components, the
lack of damage accumulation rules to realistically take into account the effects of various load sequences, and
the uncertainty in the assessment of multiaxial stress states. The three issues contribute to life prediction errors
in a balanced way. Some modeling effort was spent in joining solution proposals in a unifying short crack
model. The actual state is presented in the paper together with some ideas for further improvement as well as
simplification for promoting the model’s acceptance in practical applications. |
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| ISSN: | 1971-8993 1971-8993 |