| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
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| Symposium
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Processing—Microstructure—Property Relationships of Titanium and Titanium Alloys
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| Presentation Title |
Now On-Demand Only: Strain Energy Density Fatigue Assessment of Ti-6Al-4V for Plain and Notched Geometries
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| Author(s) |
Jeremy Massie, Casey Holycross, Joy Gockel |
| On-Site Speaker (Planned) |
Casey Holycross |
| Abstract Scope |
Strain energy density (SED) has previously been shown to predict the life of tensile specimens for more general cases than stress based approaches, as energy models can account for complex loading and stress concentrators. This study investigates the use of SED to model the uniaxial fatigue behavior of Ti-6Al-4V specimens of plain, U-notch and V-notch geometries under fully reversed loading. Tests were completed with a range of 1 (static) to 106 cycles, with a focus between 103 and 106 cycles. Cyclic SED data from all three specimen types are examined, and initial results suggest that cyclic SED models fatigue life of the specimens accurately and in more regimes than a conventional SN curve. The average cyclic SED of plain specimens is modeled to capture LCF and HCF behavior, and multiple methods of calculating the average cyclic SED for notched geometries are explored and discussed. |