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TCD–statistics–machine learning framework for defect-controlled fatigue in recycled powder LPBF Inconel 718
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DOI：10.1016/j.tafmec.2026.105832.png)
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Abstract
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• Plain and V-notched specimens manufactured through Inconel 718 recycled powder. • FE simulations for the fatigue stress concentration factors of surface profiles. • FE and nonlinear surrogate models for pore fatigue stress concentration factors. • Incorporation of the size effect to account for highly stressed region dimensions. • Novel TCD-statistics-FE-surrogate framework for accurate fatigue strength prediction.
Keywords:
Laser powder bed fusion
Inconel 718
Recycled powder
Theory of critical distances
Defects
Surrogate models
Size effect
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