Stiffness of Compositions with Delaminations and the Influence of Ultraviolet on Adhesion

Yakupov, N. M.; Kharislamova, L. U.

doi:10.1134/s199508021906026x

Cited by 2 publications

(4 citation statements)

References 3 publications

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“…В элементах композиционных конструкций, в том числе в системах «подложка -покрытие», под воздействием механических и физических полей могут возникать напряжения, вызывающие расслоение составных элементов композиций и отслоение покрытия от подложки [37; 38]. В частности, напряжения, возникающие в покрытии, приводят к образованию складок и гофров, растрескиванию покрытия 12 [37][38][39][40][41] и т. д. Актуальность проблемы стабильности тонких пленок на подложке отмечается в [37], где рассмотрены процессы упругой и пластической деформации металлических, оксидных и полупроводниковых пленок при механическом нагружении. Внешним осмотром трудно определить наличие расслоения.…”

Section: методы исследования расслоения составных элементов и отслоен...unclassified

“…Еще один подход -исследование жесткости композиционных структур с расслоением. В [41] рассмотрены варианты формирования композиции путем ламинирования отдельных слоев. Схема структуры образца «полимерная пленка + ткань + полимерная пленка» с участком расслоения представлена на рис.…”

Section: методы исследования расслоения составных элементов и отслоен...unclassified

“…12. Структура образца до ламинирования Образцы для исследования в [41] получены путем ламинирования композиции: пленка из полиэстера, ткань -белая бязь, тонкая бумага (салфетка). Для определения жесткостных свойств композиций использован экспериментально-теоретический метод [20][21][22][23].…”

Section: методы исследования расслоения составных элементов и отслоен...unclassified

“…Исследованы полимерно-тканевые композиции диаметром D = 100 мм с толщиной пленок t = 75 мкм, 100 мкм и 125 мкм: группа 1 -склеенная композиция «пленка + ткань + пленка»; группа 2 -не склеенная композиция «пленка + бумага + ткань + бумага + пленка»; группа 3 -композиция «пленка + ткань + пленка», не склеенная в центре диаметром d = 1 см. Результаты исследовании по [41] Как видно из таблицы, расслоение композиции влияет на ее жесткость, то есть на ее несущую способность.…”

Section: методы исследования расслоения составных элементов и отслоен...unclassified

See 3 more Smart Citations

Rigidity, adhesion and delamination of the coating in the “substrate - coating” system

Yakupov

Gubaidullin²

2022

Struct. Mech. of Eng. Const. and Build

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Protective coatings are widely used in all branches of production and life. The necessary qualities of coatings are provided by developing complex thin-layer compositions. The complexity of the structure of the coating also arises during operation as a result of the influence of the environment, physical fields, human factor. Many coatings are initially formed directly on the surfaces of structures with initially complex geometry. At the same time, a number of smart coatings, along with a complex structure, change their physical and mechanical properties when triggered. When choosing a coating, adhesive and technology for its application, questions arise related to determining their necessary geometric and physical parameters, assessing their mechanical properties and service life depending on the environment and physical fields, etc. This requires a reliable research tool. In the review, based on well-known publications and patents for the invention, the following are noted: methods for studying the mechanical properties of decomposable and non-decomposable coatings; methods for determining adhesion - the adhesion strength of the coating to the substrate; methods for studying the delamination of constituent elements and delamination of the coating from the substrate. Attention is focused on effective experimental and theoretical methods for assessing the mechanical properties of the coating and adhesive on flat and non-planar surfaces, as well as on some relevant results.

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Section: методы исследования расслоения составных элементов и отслоен...unclassified

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Rigidity, adhesion and delamination of the coating in the “substrate - coating” system

Yakupov

Gubaidullin²

2022

Struct. Mech. of Eng. Const. and Build

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Diagnostics of thin-walled structures of complex geometry and structure

Yakupov

2021

Struct. Mech. of Eng. Const. and Build

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The main stages of the birth of thin-walled structures, changes in their relative thickness and mass of a unit area are given; ways of creating perfect thin-walled structures are indicated. The problems arising during the operation of thin-walled structures of complex geometry, as well as approaches and methods of their calculation are noted. To ensure trouble-free operation of a thin-walled structure with a thin-layer coating, under load and exposed to physical fields and environments, it is necessary to correctly diagnose the condition of structural elements. The spline variant of the finite element method in two-dimensional (SV FEM-2) and three-dimensional (SV FEM-3) productions is noted, as well as the synthesis of these variants - SV FEM-2 + SV FEM-3. The combination of the idea of parametrization of the entire domain and approximation of the desired variables within the element by Hermitian cubic splines makes it possible to obtain high-precision consistent finite elements. The developed variants of the finite element method make it possible to evaluate the stress-strain state of structures of complex geometry, including the calculation of multilayer, thin-walled structures with coating and local defects, as well as to take into account specific surface properties other than those of the main array. Studies of stress concentration near local depressions are considered. Two-dimensional experimental and theoretical methods are noted for evaluating the stiffness properties and adhesion of thin-walled, thin-layer and composite structural elements of complex structure, which, along with a distributed complex structure, may have distributed defects. The developments were used in solving specific tasks of a number of enterprises.

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Stiffness of Compositions with Delaminations and the Influence of Ultraviolet on Adhesion

Cited by 2 publications

References 3 publications

Rigidity, adhesion and delamination of the coating in the “substrate - coating” system

Rigidity, adhesion and delamination of the coating in the “substrate - coating” system

Diagnostics of thin-walled structures of complex geometry and structure

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