zldmЗаводская лаборатория. Диагностика материаловIndustrial laboratory. Diagnostics of materials1028-68612588-0187ООО «Издательство «ТЕСТ-ЗЛ»10.26896/1028-6861-2025-91-1-60-68zldm-2379Research ArticleИССЛЕДОВАНИЕ СТРУКТУРЫ И СВОЙСТВ. МЕХАНИКА МАТЕРИАЛОВ: ПРОЧНОСТЬ, РЕСУРС, БЕЗОПАСНОСТЬTESTING OF STRUCTURE AND PARAMETERS. MECHANICAL TESTING METHODSСовершенствование метода корреляции цифровых изображений в области анализа процессов деформирования и разрушения композитовImprovement of the method of digital image correlation in the field of analyzing the processes of deformation and fracture of compositesСтрунгарьЕ. М.StrungarE. M.

Елена Михайловна Струнгарь

614990, г. Пермь, Комсомольский проспект, д. 29

Elena M. Strungar

29, Komsomolsky prosp., 614990, Perm’

cem.spaskova@mail.ruЛобановД. С.LobanovD. S.

Дмитрий Сергеевич Лобанов

614990, г. Пермь, Комсомольский проспект, д. 29

Dmitrii S. Lobanov

29, Komsomolsky prosp., 614990, Perm’

СтароверовО. А.StaroverovO A.

Олег Александрович Староверов

614990, г. Пермь, Комсомольский проспект, д. 29

Oleg A. Staroverov

29, Komsomolsky prosp., 614990, Perm’

ПеленевК. А.PelenevK. A.

Константин Александрович Пеленев

614990, г. Пермь, Комсомольский проспект, д. 29

Konstantin A. Pelenev

29, Komsomolsky prosp., 614990, Perm’

Пермский национальный исследовательский политехнический университетРоссияPerm National Research Polytechnic UniversityRussian Federation2025260120259116068Copyright © Струнгарь Е.М., Лобанов Д.С., Староверов О.А., Пеленев К.А., 20252025Струнгарь Е.М., Лобанов Д.С., Староверов О.А., Пеленев К.А.Strungar E.M., Lobanov D.S., Staroverov O.A., Pelenev K.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.zldm.ru/jour/article/view/2379

Приведены новые экспериментальные результаты, описывающие процессы деформирования и разрушения композитов с существенной структурной неоднородностью с концентраторами. Предложен масштабный подход к развитию метода корреляции цифровых изображений (КЦИ) при сложных режимах внешних воздействий. Рассмотрен ряд способов фиксации регистрируемых данных при циклических воздействиях. Изложены особенности каждого из представленных способов фиксации данных в зависимости от основной цели исследования на основании статических и циклических испытаний углепластиковых образцов. Представлены рекомендации к использованию опций «analog capture» и «flex capture» программы «vic snap». Рекомендации справедливы для решения задач, связанных с анализом закономерностей деформирования и разрушения объектов со структурной неоднородностью из полимерных композиционных материалов при различных режимах внешнего нагружения. Отражены основные методические особенности, возникающие при работе с бесконтактной оптической видеосистемой VIC-3D и использовании метода корреляции цифровых изображений на полимерных композиционных материалах. Проведено сравнение деформаций на структурном и макроскопическом уровнях. Предложены рекомендации по подбору параметров постобработки при расчете методом КЦИ. Предложен способ снижения краевого эффекта, возникающего при испытаниях образцов с концентратором на одноосное растяжение. Результаты проведенных исследований позволили получить новые экспериментальные данные о процессах развития дефектов и зон макроскопического разрушения в области отверстия, исключающие влияние краевой зоны.

The paper reflects new experimental results describing the processes of deformation and fracture of composites with significant structural heterogeneity with concentrators. A large-scale approach to the development of the method of digital image correlation (DIC) under complex modes of external influences is proposed. A number of methods of fixation of recorded data under cyclic impacts are considered. The peculiarities of each of the presented ways of data fixation depending on the main purpose of the research on the basis of static and cyclic tests of carbon fiber reinforced plastic specimens are outlined. Recommendations on the use of «analog capture» and «flex capture» options of the program «vic snap» are presented. The recommendations are valid for solving problems related to the analysis of regularities of deformation and fracture of objects with structural heterogeneity made of polymer composite materials under different modes of external loading. The study reflects the main methodological peculiarities arising when working with the non-contact optical video system VIC-3D and the method of correlation of digital images on polymer composite materials. Deformations at the structural and macroscopic levels are compared. Recommendations on the selection of post-treatment parameters, namely the step in the calculation by the KCI method, are proposed. A method of reducing the edge effect arising during uniaxial tensile testing of specimens with a concentrator is proposed. As a result of these studies, it becomes possible to obtain new experimental data on the processes of defect development and macroscopic fracture zones in the hole region, avoiding the influence of the edge zone.

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The authors declare that there are no conflicts of interest present.