Open AccessComposite strength technological increase in SHF electromagnetic field
Author(s) -
И. В. Злобина,
И. В. Злобина,
Николай Бекренев,
Н. В. Бекренев,
Сергей Петрович Павлов,
С. П. Павлов
Publication year - 2018
Publication title -
naukoëmkie tehnologii v mašinostroenii
Language(s) - English
Resource type - Journals
ISSN - 2223-4608
DOI - 10.12737/article_5a5a44e7789f39.08085474
Subject(s) - materials science , composite material , composite number , fractal , stress (linguistics) , electromagnetic field , stress field , matrix (chemical analysis) , structural engineering , engineering , finite element method , mathematics , physics , mathematical analysis , linguistics , philosophy , quantum mechanics
As a method for the mechanical strength increase in products made of composite and its uniformity increase in a product there is offered a structure modification in a SHF electromagnetic field of a standard frequency range. It is defined that a SHF modification contributes to the increase of bend stress by 11 – 16 %, cut stress increase by 13 – 21 %. During tests for an inter-laminar shear the samples processed withstand stress by 14 – 15 % more than reference samples. The study of the micro-structure in reference samples and processed ones with the use of the fractal analysis procedure has shown that a fractal dimensionality of micro-objects of the structure of material worked increased as compared with a reference sample by 14 – 22 %. This fact may be accepted as one of the mechanisms for material strength increase at the expense of the increase of contact interaction points of the matrix and reinforcing fibers.