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- W3120276145 abstract "This review evaluates approaches towards acceptable methods for fatigue and damage tolerance (F&DT) substantiation of additively manufactured (AM) metallic structural components and the efforts towards their qualification and certification (Q&C). This review further highlights potential gaps in meeting the airworthiness certification requirements and identifies where the guidelines are lacking for Q&C of aerospace metallic principal structural elements (PSE). It highlights the formidable task that F&DT analysis criterion must achieve for minimum structural reliability requirements for PSEs – structural components whose failure could result in catastrophic flight safety results. Invariably, this paper sheds light on progress towards a solution to perhaps the greatest challenge in F&DT of AM metallic parts – quantifying their material strength allowables. By further focusing on the powder bed fusion AM process, this paper reviews advances in material strength variability studies resulting from this process including residual thermal stresses, porosity, comprehensive microstructural defects, surface roughness and deformations such as shrinkage and warpage associated with the metal powder bed fusion process. Thus, the survey includes a consideration of the design and build aspects of metal powder bed fusion and the approaches towards optimally configured process parameters that consistently meet minimum structural reliability requirements for certification by airworthiness authorities." @default.
- W3120276145 created "2021-01-18" @default.
- W3120276145 creator A5029543879 @default.
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- W3120276145 date "2021-01-04" @default.
- W3120276145 modified "2023-10-16" @default.
- W3120276145 title "A Review of Fatigue and Damage Tolerance Life Prediction Methodologies toward Certification of Additively Manufactured Metallic Principal Structural Elements" @default.
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- W3120276145 doi "https://doi.org/10.2514/6.2021-1509" @default.
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