Impregnation kinetics of fibers with liquids: simulation within the generalization of Navier-Stokes equations

Belov, P. A.; Kobets, L. P.; Borodulin, A. S.

doi:10.1134/s2075113314040182

Cited by 17 publications

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“…Display of the massive of the image intensity in the upper and lower parts of the fractured sample ensures visual presentation of differences or coincidences of the deformation parameters within these sections. 4. Influence of the length of the section for deformation measurements upon the value of deformation was investigated with the help of the digital method of the sample image processing.…”

Section: Discussionmentioning

confidence: 99%

“…Group analysis of the data SL and Sh in the transversal and longitudinal cross-sections of the upper and lower parts of the sample (of the samples). 4. Performance of analysis of the data SL along with parameters of roughness Rz.…”

Section: Analysis Of the Data Sl And Sh In The Transversal Cross-sections Of The Upper And Lower Parts Of The Sample (Of The Samples)mentioning

confidence: 99%

“…Due to development of the high-quality recording photographic equipment and video equipment, as well as development of digital methods of the videodata processing in various branches of technology (Znamenskaya et al, 2001;Bessonov et al, 2013, Filippov andProskokov, 2014;Belov et al, 2014;Berezovskii et al, 2015;Kobets et al, 2016;Bodryshev and Morgunova, 2017a;Babaytsev et al, 2017a;Formalev and Kolesnik, 2017;Formalev and Kolesnik, 2018;Bulychev et al, 2018) Wang et al, 2019). Calculated values of the deformation parameters will be final results of such method.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of Processes of Deformation of Plastic Materials With the Help of Digital Image Processing

Bodryshev¹,

Babaytsev²,

Rabinskiy³

2019

PTQ

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As of now, many investigations are performed in order to develop methods of correlation with the help of relevant algorithms. This is especially helpfull for plotting vectors of displacements in order to estimate deformation of various materials, as well as to determine correspondence between sections of two images through calculation of the cross-correlating functions and to ensure seeking of the extremum. The aim of this study was to develop relevant method to estimate mechanism of fracture of materials in accordance with the data of analysis of a photographic image in respect of the parameter of the image intensity. In addition, this method is to be used with the help of the multivariate analysis (multi-factor analysis) of the interrelationship between image intensity, surface roughness, and possibility to determination the geometrical parameters of the deformation area/deformation volume under different conditions of operation. Digital method of processing of photographs/video frames has been used in order to investigate microstructure and surface of materials in respect of criterion of the image intensity in the course of mechanical tests in accordance with deformations. Quantitative parameters of the image intensity were compared to the structure of material, as well as to the surface roughness before and after destruction of samples. The images used were obtained during mechanical testing of aluminium samples. To ensure the validity of the test results, six specimens of the same type were tested. A stress-strain diagram was drawn up for each specimen. Stress-strain diagrams from the mechanical tests were compared with those from the photo analysis using the method described above. The results correlate well with each other, but unlike the experiment, where the strain is measured only at the strain gauge location, the photo analysis provides a complete picture of the strain distribution over the entire specimen area. In addition, a multivariate analysis has been carried out to evaluate the geometric dimensions and shapes of the structure elements.

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Section: Discussionmentioning

confidence: 99%

Section: Analysis Of the Data Sl And Sh In The Transversal Cross-sections Of The Upper And Lower Parts Of The Sample (Of The Samples)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation of Processes of Deformation of Plastic Materials With the Help of Digital Image Processing

Bodryshev¹,

Babaytsev²,

Rabinskiy³

2019

PTQ

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“…At present, polymer composite materials play an important role in the creation of modern types of aviation and space technology. Among them, the most popular and commercially developed are composites based on carbon fabrics and epoxy resins of various chemical structures and compositions [1][2][3][4][5][6][7][8][9]. To develop the technology for obtaining the considered composite materials based on new modified binders, it is necessary to study the curing process of epoxy compositions [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Rheological research of the curing processes of the epoxy-amine compositions based on ED-20 resin

et al. 2023

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Alkali resistant epoxy binders for pultrusion

Leshtaev,

Storozhuk,

Orlov

et al. 2023

E3S Web of Conf.

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Alkali-resistant hot-curing epoxy binders based on ED-20 and new amine hardeners “Amikrost” have been developed, intended for the production of glass-composite fittings for construction purposes. The rheological properties of epoxy compositions were determined, using differential scanning calorimetry and thermogravimetric analysis, the temperature dynamics of the curing process of epoxy compositions and the thermal-oxidative resistance of cured samples were studied. The alkali resistance of cured epoxy compositions and specimens of composite reinforcement in 40% alkali aqueous solution was evaluated. It is shown that the developed amine hardeners provide high alkali resistance of composite reinforcement in comparison with the currently used anhydride hardener iso-MTHPA, which is especially important for reinforcing buried and hydraulic concrete.

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Impregnation kinetics of fibers with liquids: simulation within the generalization of Navier-Stokes equations

Cited by 17 publications

References 0 publications

Investigation of Processes of Deformation of Plastic Materials With the Help of Digital Image Processing

Investigation of Processes of Deformation of Plastic Materials With the Help of Digital Image Processing

Rheological research of the curing processes of the epoxy-amine compositions based on ED-20 resin

Alkali resistant epoxy binders for pultrusion

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