An effective stress parameter for long-term fatigue strength of fiber-reinforced plastic pipes

被引：0
|
作者：
Kujawski, D. [1 ]
Chiu, A.S. [1 ]
Ellyin, F. [1 ]
机构：
[1] Dept of Mechanical Eng, Univ of Alberta, Edmonton Alberta T6G 2G8, Canada
来源：
Journal of Composites Technology and Research | 1996年 / 18卷 / 03期
关键词：
Fatigue of materials - Fatigue testing - Plastic pipe - Pressure effects - Strength of materials - Stress analysis - Stress concentration;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The currently used American Society for Testing and Materials (ASTM) procedure and a modified American Petroleum Institute (API) method for cyclic pressure strength of fibre reinforced plastic (FRP) pipes are critically discussed together with the test results generated by Battelle. In addition, two new damage parameters, recently proposed by the authors, are examined using the Battelle tests as a database. An equivalent stress range damage parameter, Δσ¯, is recommended which combined the loading condition, hoop stress range and normalized mean stress, and FRP pipe material properties. The proposed damage parameter, Δσ¯, can be used in the engineering evaluation of fatigue performance of pressured fiberglass pipes. The Δσ¯ provides substantial improvement over the ASTM recommended parameter, hoop stress range. Using the Δσ¯, the fatigue data for different mean pressures are consolidated into a narrow scatter band.
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页码：215 / 220
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