Open AccessDamage to engineering objects during re-static alternating load modes
Author(s) -
Anatoliy Grabovskiy,
Oleksandr Bondarets,
Iryna Babiienko
Publication year - 2021
Publication title -
progresivna tehnìka, tehnologìâ ta ìnženerna osvìta
Language(s) - English
Resource type - Journals
ISSN - 2409-7160
DOI - 10.20535/2409-7160.2021.xxii.240400
Subject(s) - service life , structural engineering , materials science , shear (geology) , mechanical load , composite material , engineering
The paper considers the kinetics of damage accumulation in engineering facilities that operate under repeated static alternating load modes - parts and structural elements of vehicles (cars, airplanes, railways). When changing the direction of the load force in the structural material there is a phenomenon of changing the shape of micro defects, which leads to their "healing", ie the factor of damage to separation and shear changes, which affects the effective stresses and service life of equipment. This effect of defect healing is considered experimentally for materials with different plastic properties.