Fatigue crack growth of Beta-21S titanium alloy under constant amplitude and miniTWIST flight spectra at 25 degrees C and 175 degrees C

Article Abstract:

A study was conducted on the fatigue crack growth behavior of Beta-21S titanium alloy when subjected to constant amplitude and miniTWIST flight spectra at 25 degrees and 175 degrees Centigrades. The crack path morphology was analyzed using scanning electron fractography, while the flight spectra fatigue crack growth was determined using the NASA/FLAGRO software. Results indicate that the Beta-21S titanium alloy is ideal for damage tolerant conditions in aerospace applications.

Research, Strength of materials, Strength (Materials)

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Probabilistic mesomechanics for high cycle fatigue life prediction

Article Abstract:

A probabilistic mesomechanical fatigue model of a microsturucture composed of single-phase polycrystalline material is presented. The model links the microstructure variations to the fatigue life scatter data and predicts the shape of the total fatigue life distribution and global stress effects.

Statistical Data Included, Models, Usage, Monte Carlo method, Monte Carlo methods

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A constitutive model for distributed microcracking in titanium matrix composite laminae

Article Abstract:

The prediction of fatigue span under constant amplitude and isothermal conditions can be derived from an energy-based model of fiber reinforced metal matrix composites. The fatigue analysis of unnotched titanium matrix composite laminates are described by a microcracking model.

Testing, Metallic composites, Metal fatigue

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