Predicting the likely causes of early crack initiation for extruded aircraft components containing intergranular corrosion
| Autor: | Graham Clark, Chris Loader, Milan Brandt, Tim J. Harrison, Bruce R. Crawford |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Fissure Mechanical Engineering Metallurgy Fatigue testing 02 engineering and technology Intergranular corrosion 021001 nanoscience & nanotechnology 01 natural sciences Industrial and Manufacturing Engineering Crack closure medicine.anatomical_structure Mechanics of Materials Modeling and Simulation 0103 physical sciences Crack initiation medicine General Materials Science 0210 nano-technology Stress concentration |
| Zdroj: | International Journal of Fatigue. 82:700-707 |
| ISSN: | 0142-1123 |
| DOI: | 10.1016/j.ijfatigue.2015.09.028 |
| Popis: | This paper details an experimental and finite element (FE) analysis of the atypical form of intergranular corrosion (IGC) observed in the wing skins of the RAAF and RNZAF P-3 Orion to determine if its presence is likely to cause atypical fatigue crack initiation. An investigation of the local stress concentration of IGC-related features found that it was not the IGC fissure itself that can lead to early fatigue crack initiation, but the pits and corroded inclusions associated with its presence. It was also found that fatigue can initiate sub-surface, however this is limited to a depth of approximately 650 μm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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