What is it about?
Fatigue is a process in which damage accumulates due to the repetitive application of loads that are below the ultimate strength of the material. Gigacycle fatigue occurs when materials are subjected to very high number of load cycles with crack formation consuming about 80% to 99% of the total fatigue life. This review looks into the state of gigacycle fatigue behavior of some structural materials used in engineering works.
Featured Image
Why is it important?
Gigacycle fatigue behavior of various engineering materials shows that fatigue limit does not exist in majority of materials but show continuous degradation of fatigue strength with increasing number of load cycles. Due to the difference in the controlling factors of different engineering materials, single or individual tests of materials remain the only scientifically acceptable way to determine the behaviors of materials in gigacycle regime.
Perspectives
More studies about crack initiation in gigacycle regime would be useful due to the fact that there are different and conflicting data from many scientists who have carried out tests and experiments with most structural materials.
Mr Okechukwu P Nwachukwu
Far Eastern Federal University, Vladivostok
Read the Original
This page is a summary of: Gigacycle Fatigue of Welded Joints of Structural Materials (A Review), Advanced Engineering Forum, June 2016, Trans Tech Publications,
DOI: 10.4028/www.scientific.net/aef.17.14.
You can read the full text:
Resources
Contributors
The following have contributed to this page
