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Fatigue behavior of corrosion notched weathering steel samples.

机译：腐蚀开槽的耐候钢样品的疲劳行为。

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摘要

Weathering steel has been a primary construction material for bridges in the United States. Notches caused by corrosion are observed on the flange of steel I-beams. These notches reduce the cross section area of the structure and are threats to bridge safety. A606-04 Type 4 cold rolled weathering steel samples were studied in this thesis to understand the effect of notches that caused by corrosion. Weathering steel samples were in the shape of plates, which simulated flange of I-beams. The plate samples were notched across their surfaces by applying electrical current through an electrochemical circuit composed of an anode, a cathode and electrolyte. Sixteen samples were notched and cut into appropriate shape for fatigue testing. S-N (Stress-Number of cycles to failure) diagram established from fatigue data indicated that the fatigue strength decreased below AASHTO category B. Weibull analysis was also performed to understand the reliability distribution.
机译：在美国，耐候钢一直是桥梁的主要建筑材料。在钢工字钢的法兰上观察到腐蚀引起的缺口。这些凹口减小了结构的横截面面积，并且威胁到桥梁安全。本文研究了A606-04 4型冷轧耐候钢样品，以了解腐蚀引起的缺口的影响。耐候钢样品为板状，可模拟工字梁的法兰。通过通过由阳极，阴极和电解质组成的电化学电路施加电流，使板样品在其表面上刻有缺口。将16个样品切开缺口，并切成合适的形状以进行疲劳测试。根据疲劳数据建立的S-N（应力-失效循环数）图表明，疲劳强度降低到AASHTO B类以下。还进行了威布尔分析以了解可靠性分布。

著录项

  • 作者

    Chen, Di.;

  • 作者单位

    Florida Atlantic University.;

  • 授予单位 Florida Atlantic University.;
  • 学科 Engineering Marine and Ocean.;Engineering Mechanical.;Engineering Civil.
  • 学位 M.S.
  • 年度 2014
  • 页码 108 p.
  • 总页数 108
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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