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The Reliability Life of 7B04 Aluminum Alloy under Alternate Action of Corrosion and Fatigue

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  • Changfan Li
  • Yuting He
  • Yu Feng
  • Liming Wu
  • Sheng Zhang

Abstract

Experiment of alternate action of corrosion and fatigue on 7B04 aluminum alloy was carried out in this paper and fatigue life was obtained. One of the characteristics about fatigue life is that it is not always decreasing with the increasing of corrosion time. The surface splits caused by the corrosion of intruding and extruding slip steps on the surface and decreasing of stress concentration around corrosion pits were the main reasons. Single side allowance factor was proposed to calculate reliability fatigue life with both reliability and confidence. Reliability, confidence, and specimen number had affection on the value of . The reliability influences more greatly the reliability fatigue life compared to the confidence. The safe fatigue life is smaller than median life and it was safe to administrate aircraft life using safe fatigue life.

Suggested Citation

  • Changfan Li & Yuting He & Yu Feng & Liming Wu & Sheng Zhang, 2016. "The Reliability Life of 7B04 Aluminum Alloy under Alternate Action of Corrosion and Fatigue," Mathematical Problems in Engineering, Hindawi, vol. 2016, pages 1-9, March.
    • Handle: RePEc:hin:jnlmpe:3907420
    DOI: 10.1155/2016/3907420
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