Reconsidering the Role of Fatigue Irregular Testing in Scientific Conclusions About the Fatigue Limit


  • I. V. Gadolina IMASH RAS, Moscow, Russia



Mechanical fatigue, endurance limit, block loading, Linear damage summation, statistics.


We propose using the irregular loading fatigue testing to study the cru-
cial topics of the subject, for instance, concerning the fatigue limit. This
characteristic is important to know (1) for test accelerating; (2) To guar-
antee stable, reliable service. Comparative studies under block and random
loading present an opportunity to draw conclusions without the ultra-sound
frequencies loading, which are at some extend controversial. We present
an example of proposed method application. The second stage of fatigue –
namely, the crack propagation stage, is also considered (in reference). There
the main idea is similar – the irregular testing provides an opportunity to
judge about the maxim among the small amplitudes, which are not harmful.
Direct experimental estimation of true fatigue limit requires the testing under
ultra-sound frequencies, which is not under the questions nowadays


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Author Biography

I. V. Gadolina, IMASH RAS, Moscow, Russia

Irina Gadolina was born in Moscow in 1954. In 1977 she has been graduated
from Moscow Technical University with a major of Mechanic – Investigator.
Since when Gadolina has been working for Mechanical Research Institute of
Russian Academy of Science (IMASH RAS) and deal mostly with reliability
under fatigue impact. Random loading and Machine learning are also in
scope of her interests. Gadolina got her PhD in 1990. She published more
than 120 papers and chapters in the scientific books. In the nearest future
Gadolina plan to perform thoroughly planned fatigue experiment for con-
sidering impact of the mutual important factors employing the experimental
design methodology.


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How to Cite

Gadolina, I. V. (2022). Reconsidering the Role of Fatigue Irregular Testing in Scientific Conclusions About the Fatigue Limit. Journal of Graphic Era University, 10(1), 41–50.