Fatigue crack growth in 2017A-T4 alloy subjected to proportional bending with torsion

Frattura ed Integrità Strutturale

S. Faszynka¹  D. Rozumek¹ 

[1] Opole University of Technology;

关键词: Fatigue crack growth;    Load ratio;    Notch;    Bending with torsion;   

DOI  :  

来源: DOAJ

【 摘 要 】

The paper presents the results of tests on the fatigue crack growth for a constant moment amplitude under combined bending with torsion in the aluminium alloy AW-2017A-T4. The tests were performed under different values of the load ratio R. Plane specimens with stress concentrators in form of the external one-sided sharp notch were tested. A non-uniform fatigue cracks growth on both lateral surfaces of specimens was observed during experimental tests. Fatigue cracks were developing in the specimens in two stages; quarter-elliptic edge cracks were observed at the beginning, then evolving into through cracks.

【 授权许可】

Unknown