Evaluation of Threshold Condition of Interior Annular Crack Growth in Gigacycle Regime

Wei Li; Ping Wang

doi:10.4028/www.scientific.net/AMM.459.65

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 459Evaluation of Threshold Condition of Interior...

Evaluation of Threshold Condition of Interior Annular Crack Growth in Gigacycle Regime

Abstract:

Gigacycle fatigue properties with interior-induced failure of three high strength steels under different loading conditions were investigated, and an experimental-theoretical method is proposed to quantitatively evaluate the threshold condition of interior crack growth. The entire growth process consists of small crack growth within fine granular area (FGA), stable long crack growth outside of FGA within fish-eye and unstable crack growth outside of fish-eye. Based on the comparison between evaluated and experimental results, the validity of method is verified.

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Periodical:

Applied Mechanics and Materials (Volume 459)

Pages:

65-69

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.459.65

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Online since:

October 2013

Authors:

Wei Li, Ping Wang

Keywords:

Fine Granular Area, Gigacycle Fatigue, High Strength Steel (HSS), Interior Crack Growth, Threshold Condition

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