Open AccessВлияние предварительного динамического нагружения на усталостную долговечность сплава АМг6
Author(s) -
Д.А. Билалов,
В.А. Оборин,
О.Б. Наймарк,
М.В. Нарыкова,
А.Г. Кадомцев,
В.И. Бетехтин
Publication year - 2020
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2020.08.49309.18098
Subject(s) - materials science , limit (mathematics) , strain (injury) , fatigue limit , strain rate , structural engineering , composite material , mathematics , engineering , mathematical analysis , medicine , physical therapy
An experimental study of the influence of preliminary dynamic loading on the endurance limit of an AlMg6 alloy based on 109 cycles was carried out. It is shown that when loading to a strain of 10% with a strain rate of 103 s-1, the endurance limit decreases by 22%. A mathematical model is proposed that is able to adequately predict fatigue failure, including after preloading.