Rapid determination of fatigue failure based on temperature evolution: Fully reversed bending load

An experimental and theoretical study is carried out to investigate the temperature evolution of Aluminum 6061 and Stainless Steel 304 specimens under cyclic fatigue load. A thermographic technique is used to measure the temperature increase of the specimen due to hysteresis heating during fatigue t...

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Bibliographic Details
Published in:International journal of fatigue 2010-02, Vol.32 (2), p.382-389
Main Authors: Amiri, M., Khonsari, M.M.
Format: Article
Language:English
Subjects:
Aluminum
Aluminum base alloys
Applied sciences
Austenitic stainless steels
Crack propagation
Evolution
Exact sciences and technology
Fatigue
Fatigue (materials)
Fatigue failure
Fatigue testing
Life prediction
Low cycle fatigue
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Temperature evolution
Testing time
Thermography
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Summary:An experimental and theoretical study is carried out to investigate the temperature evolution of Aluminum 6061 and Stainless Steel 304 specimens under cyclic fatigue load. A thermographic technique is used to measure the temperature increase of the specimen due to hysteresis heating during fatigue testing. Results reveal that the surface temperature of a specimen under cyclic fatigue load can be directly related to the number of cycles to failure. In particular, it is shown that the slope of the temperature plotted as a function of time at the beginning of the test can be effectively utilized as an index for fatigue life prediction, thereby saving testing time. The predictions of temperature changes during fatigue are found to be in good agreement with the experimental results.
ISSN:0142-1123
1879-3452
DOI:10.1016/j.ijfatigue.2009.07.015