Abstract: One of the current directions in the field of materials science is the study and modeling of processes occurring in capillary-porous bodies. These facilities play an important role in areas such as oil production, medicine, construction, production of filters and batteries, and the creation of new materials, where accurate understanding and control of processes occurring in porous media is required. Modern modeling methods using computer vision and high computing power of computers can significantly improve the accuracy and efficiency of studies of capillary-porous bodies and processes in them. For porous bodies of irregular structure, accurate visual fixation of processes occurring inside objects is difficult, but there is a need for this especially for multilevel processes that affect the state of a porous body. The proposed simulators and models of the structure of such objects using simplifications and abstract models to assess the interaction of substances (diffusion, percolation, etc.) are unsuitable in heterogeneous and irregular structures. To obtain a geometric model of arbitrary-shaped pores, it is proposed to use digital image processing methods. An array of points describing the geometry of the pore has been created. A method of surface modeling based on spline interpolation of selected points is was chosen. To obtain a surface model of an irregular-shaped pore, a technique has been developed for forming an array of points based on the brightness levels of pixels of its digital image. The brightness levels for grouping the initial pore points are determined based on the local maxima of the brightness histogram. An algorithm for constructing a surface model of an irregular-shaped pore using spline interpolation of point arrays has been developed. The result of the software implementation of the developed algorithm for modeling the surface of irregular pores is presented. According to the developed method of geometric modeling of irregular pores, it is possible to obtain further information for analysis on the size and volume of pores, porosity of the object as a whole, as well as to analyze processes in porous objects. If necessary, to increase the accuracy of the shape, the number of brightness levels for grouping points can be increased.

Abstract: In this paper, the static strength of a UAV blade made of composite material was calculated. Composite materials have an advantage over traditional materials (metals and alloys) in the field of aviation – gain in weight, low sensitivity to damage, high rigidity, high mechanical characteristics. At the same time, the identification of vulnerabilities in a layered structure is a difficult task and in practice is solved with the help of destructive control. Composite materials available in the ANSYS materials library were used in the modeling: Epoxy Carbon Woven (230 Gpa) Prepreg woven carbon fiber in the form of a semi–finished prepreg impregnated with epoxy resin carbon fiber with Young's modulus E=230 GPa and Epoxy Carbon (230 Gpa) Prepreg is a unidirectional carbon fiber prepreg impregnated with epoxy resin with a Young's modulus E=230 GPa. Modern software products, such as ANSYS WorkBench, allow comprehensive investigation of the layered structure. Several variants of blade designs with different fillers as the median material were investigated. The forward and reverse destruction criteria based on the Tsai-Hill theory were used. The influence of gravity was not taken into account. It is shown that the developed blade design meets the requirements. Balsa wood, pine, aspen and polyurethane foam were chosen as the middle material of the blade. Pine and aspen wood were selected according to the criteria of their availability and having the lowest density. The materials library of the ANSYS WorkBench software package used does not have characteristics for all of them, so the characteristics of the selected materials (pines and aspens) were added manually. For modeling and calculations in the ANSYS WorkBench program, such characteristics as density, axial elastic modulus, Poisson's coefficients, shear modulus and tensile and compressive strength limits are required.

Abstract: The article offers a description of parametric objects with spherical pores by generalized linear interpolation. Increasing the volume of high-resolution image data requires the development of algorithms capable of processing large images with reduced computational costs. Numerical data on the geometry of the pores of the object under study are transformed into the geometry of bodies consisting of octagonal portions of cubic shape. Parametric porous objects can model both the shape and the isoparametric interior. Often, this type of parametric bodies is used as initial or boundary conditions in numerical modeling to demonstrate internal modeling. To form a body of complex shape, parametric solid-state elements can be connected together. The continuity between the elements can be determined in the same way as when modeling cubic parametric splines. A lot of research is devoted to the reconstruction of the geometric structure of porous materials based on digital images of objects for a better understanding and representation of physical processes in a porous medium. A detailed understanding of the microstructure can be used to determine physical properties, and then to evaluate and improve the characteristics of simulated objects and processes in them. The article presents the results of the proposed algorithm in the MathCAD environment and software processing of a porous body based on digital images.

Abstract: The article presents the results of determining the moisture-binding ability and plasticity of food products. Many indicators depend on the ability of meat and fish to bind moisture, including juiciness, tenderness, yield, loss during heat treatment, and appearance. The objects for research were Baikal omul, fresh and salted, beef meat in thawed condition. The moisture-binding ability and plasticity of the objects of study were evaluated by the pressing method. The paper presents the calculations performed using the traditional method and the method of digital processing of color images. Digital image processing was performed using a program developed by the authors, the article provides drawings and tables obtained during image processing. The undoubted advantage of the processing program compared to the traditional method is a significant reduction in time for processing images and the ability to process a large amount of data in a short time. When creating the necessary shooting conditions, the digital image processing method for determining the moisture-binding ability and plasticity of food products can be successfully used for laboratory research in determining the quality of meat and fish products.