Crack propagation under constant amplitude loading based on an energetic parameters and fractographic analysis

Materials Research

Mohamed Benguediab¹  Benattou Bouchouicha¹  Zemri Mokhtar¹  Mohamed Mazari¹ 

[1] ,University of Sidi Bel Abbes Department of Mechanical Engineering Laboratory and Reactive Systems,Algeria

关键词: fatigue crack growth;    energy dissipated;    features;    dimples;    striations;   

DOI  :  10.1590/S1516-14392012005000072

来源: SciELO

【 摘 要 】

The crack propagation behavior in a 2024 T351 Aluminum Alloy under constant amplitude loading has been studied. This study is complemented by quantitative microfractographic observations and energetic analysis. The obtained results under constant amplitude fatigue tests show that different crack propagation stages can be identified and correlated with the evolution of the characteristic features. In another hand, the energetic analysis shows that there is a discontinuous crack growth at low growth rates as against a cycle by cycle growth mechanism at high growth rates.

【 授权许可】

CC BY   
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