Open AccessОпределение трещиностойкости образцов с шевронным надрезом с использованием трехточечного изгиба
Author(s) -
E.E. Дерюгин,
А.А. Богданов
Publication year - 2021
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2021.20.51612.18936
Subject(s) - chevron (anatomy) , materials science , fracture mechanics , bending , fracture (geology) , composite material , structural engineering , geology , engineering , paleontology
A method is proposed for the experimental determination of the specific fracture energy of a material under loading by a 3-point bending of a rectangular specimen with a chevron notch. It is shown that at the initial stages of crack propagation in the chevron notch zone, a linear dependence of the specimen compliance on the crack length is observed. This makes it possible to calculate the specific fracture energy of the material without using the phenomenological equations used under standard test conditions. The calculations were carried out for technical titanium VT1-0.