INFLUENCE OF ACCUMULATED FATIGUE DAMAGE ON CRACK PROPAGATION IN ALCLAD ALUMINUM ALLOY

Authors

  • М. В. Карускевич National Aviation University
  • С. В. Щепак National Aviation University
  • O. I. Щур National Aviation University
  • А. В. Плащинська Institute of mechanics named after S. P. Tymoshenko of NAS of Ukraine

DOI:

https://doi.org/10.18372/2310-5461.17.4742

Keywords:

aircraft structures, fatigue cracks, aluminium alloys, deformation relief, damage accumulation

Abstract

Application of damage tolerance principle at operation of aircrafts assumes ability to predict propagation of fatigue cracks. Conducted experiments have proved that local metal damage accumulated due to cyclic loadings has influence on fatigue crack propagation, especially on the initial stages of crack development. Density of deformation relief at the stress concentrator is being used as damage indicator. It has been proved, that there exists correlation between time of crack propagation and saturation of deformation relief at the stress concentrator.

References

Paris P. S. A critical analysis of crack propagation laws / Journal of Basic Engineering. Trans. Asme / P. S. Paris, F. Erdogan/ — 1963. — Vol. d-85, N4. — P. 528–534.

Karuskevich M. V. Estimation of the accumulated fatigue damage by saturation and fractal dimension of the deformation relief // Strength of materials / M. V. Karuskevich, E. Yu. Korchuk, A. S. Yakushenko, T. P. Maslak. — Vol. 40. — № 6. — P. 693–698.

Karuskevich M. Extrusion/intrusion structures as quantitative indicators of accumulated fatigue damage / M. Karuskevich, O. Karuskevich, T. Maslak, S. Schepak // International Journal of Fatigue. — 2012. — № 39. — P. 116–121.

Karuskevich M. V. Fatigue life prediction by the structurally sensitive damage indicator / M. V. Ka-ruskevich // Proceeding of NAU. — 2012. — № 1. — P. 139–143.

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Published

2013-03-23

How to Cite

Карускевич, М. В., Щепак, С. В., Щур O. I., & Плащинська, А. В. (2013). INFLUENCE OF ACCUMULATED FATIGUE DAMAGE ON CRACK PROPAGATION IN ALCLAD ALUMINUM ALLOY. Science-Based Technologies, 17(1), 14–18. https://doi.org/10.18372/2310-5461.17.4742

Issue

Vol. 17 No. 1 (2013)

Section

Air transport operations

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