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Journal articles on the topic 'Synthetic Mechanical properties Mathematical models'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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1

Tippusultan and V. N. Gaitonde. "Preparation and Mechanical Characterization of Jute-PP and Coir-PP Bio-Composites." Applied Mechanics and Materials 766-767 (June 2015): 122–32. http://dx.doi.org/10.4028/www.scientific.net/amm.766-767.122.

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Polymers reinforced with synthetic fibers such as glass and carbon offer advantages of high stiffness and strength to weight ratio compared to conventional materials. Despite these advantages, the prevalent use of synthetic fiber-reinforced polymer composite has a tendency to demur because of high initial cost and most importantly their adverse environmental impact. On the contrary, the increased interest in using natural fibers as reinforcement in plastics to substitute conventional synthetic fibers in automobile applications has become one of the main concerns to study the potential of using

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Kayumov, Rashit, and Inzilija Mukhamedova. "Mathematical model of the modified tissue deformation under stretching." E3S Web of Conferences 274 (2021): 11005. http://dx.doi.org/10.1051/e3sconf/202127411005.

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One of the effective methods for modifying natural and synthetic materials is a use of the flocking process. To analyze a quality of the modified fabrics, it is useful to have mathematical models describing a stress-strain state of the fabrics when exposed to various loads. A method has been developed for determining the stiffness characteristics of a flocked fabric based on the results of testing samples cut at different angles to the base at different tensile forces. This technique makes it possible to analyze the effect of flocking on the mechanical characteristics of the fabric. It was rev

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Felix, Levi C., Vladimir Gaál, Cristiano F. Woellner, Varlei Rodrigues, and Douglas S. Galvao. "Mechanical Properties of Diamond Schwarzites: From Atomistic Models to 3D-Printed Structures." MRS Advances 5, no. 33-34 (2020): 1775–81. http://dx.doi.org/10.1557/adv.2020.175.

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ABSTRACTTriply Periodic Minimal Surfaces (TPMS) possess locally minimized surface area under the constraint of periodic boundary conditions. Different families of surfaces were obtained with different topologies satisfying such conditions. Examples of such families include Primitive (P), Gyroid (G) and Diamond (D) surfaces. From a purely mathematical subject, TPMS have been recently found in materials science as optimal geometries for structural applications. Proposed by Mackay and Terrones in 1991, schwarzites are 3D crystalline porous carbon nanocrystals exhibiting a TPMS-like surface topolo

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Kulik, Anatoliy, Konstantin Dergachov, Sergey Pasichnik, and Sergey Yashyn. "Motions models of a two-wheeled experimental sample." RADIOELECTRONIC AND COMPUTER SYSTEMS, no. 1 (February 27, 2021): 40–49. http://dx.doi.org/10.32620/reks.2021.1.03.

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The subject of study is the physical processes of translational and angular motion of a two-wheeled experimental sample. The goal is to develop physical, mathematical, and graphic models of the translational and angular motions of a two-wheeled experimental sample as an object of automatic control. The objectives: to form physical models of a two-wheeled experimental sample; to develop a nonlinear mathematical description of the processes of translational and angular sample`s motions using the Lagrange approach; to obtain a linearized mathematical sample`s description as an object of automatic

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Jariwala, Hitesh, and Piyush Jain. "A review on mechanical behavior of natural fiber reinforced polymer composites and its applications." Journal of Reinforced Plastics and Composites 38, no. 10 (2019): 441–53. http://dx.doi.org/10.1177/0731684419828524.

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In the last decade, natural plant fibers (jute, sisal, coir, banana, hemp, kenaf, flax, etc.) are getting attention from many researchers and academicians to utilize it as an alternate reinforcement of synthetic fiber reinforced polymer composites. These fibers are becoming a great replacement of conventional fibers (such as glass, carbon, and aramid) due to their light weight, low cost, carbon neutrality, fairly good mechanical properties, high specific strength, and biodegradability characteristics. Some chemical treatments are required to enhance the fiber matrix interfacial strength and to

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Garkina, Irina, and Alexander Danilov. "Tasks of Building Materials from the Viewpoint of Control Theory." Key Engineering Materials 737 (June 2017): 578–82. http://dx.doi.org/10.4028/www.scientific.net/kem.737.578.

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From the viewpoint of control theory is given the synthesis of building materials. A control of structure and properties of the material is carried by changing the relevant technological parameters. Material is regarded as an object of control in mathematical modeling. The model is presented as a solution to the Cauchy problem for an ordinary differential equation fourth-order. The synthesis is based on parametric identification of mathematical models. The parameters are typical points of the kinetic processes of the formation of physical and mechanical characteristics of the material. Among t

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Gade, Piyusha S., Keewon Lee, Blaise N. Pfaff, Yadong Wang, and Anne M. Robertson. "Degradation and erosion mechanisms of bioresorbable porous acellular vascular grafts: an in vitro investigation." Journal of The Royal Society Interface 14, no. 132 (2017): 20170102. http://dx.doi.org/10.1098/rsif.2017.0102.

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A fundamental mechanism of in situ tissue regeneration from biodegradable synthetic acellular vascular grafts is the effective interplay between graft degradation, erosion and the production of extracellular matrix. In order to understand this crucial process of graft erosion and degradation, we conducted an in vitro investigation of grafts ( n = 4 at days 1, 4, 7, 10 each) exposed to enzymatic degradation. Herein, we provide constitutive relationships for mass loss and mechanical properties based on much-needed experimental data. Furthermore, we formulate a mathematical model to provide a phy

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Mihai, L. Angela, Thomas E. Woolley, and Alain Goriely. "Stochastic isotropic hyperelastic materials: constitutive calibration and model selection." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 474, no. 2211 (2018): 20170858. http://dx.doi.org/10.1098/rspa.2017.0858.

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Biological and synthetic materials often exhibit intrinsic variability in their elastic responses under large strains, owing to microstructural inhomogeneity or when elastic data are extracted from viscoelastic mechanical tests. For these materials, although hyperelastic models calibrated to mean data are useful, stochastic representations accounting also for data dispersion carry extra information about the variability of material properties found in practical applications. We combine finite elasticity and information theories to construct homogeneous isotropic hyperelastic models with random

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Hroncová, Darina. "CONSTRUCTION OF EQUATIONS OF MOTION OF MULTIBODY SYSTEMS AND COMPUTER MODELING." TECHNICAL SCIENCES AND TECHNOLOG IES, no. 3(13) (2018): 74–81. http://dx.doi.org/10.25140/2411-5363-2018-3(13)-74-81.

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Urgency of the research. Computer models mean new quality in the knowledge process. Using a computer model, the properties of the subject under investigation can be tested under different operating conditions. By experimenting with a com-puter model, we learn about the modelled object. We can test different machine variants without having to produce and edit prototypes. Target setting. The development of computer technology has expanded the possibility of solving mathematical models and allowed to gradually automate the calculation of mathematical model equations. It is necessary to insert app

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10

Yin, J., S. Zhang, H. W. Zhang, and B. S. Chen. "Band Structure Characteristics of Nacreous Composite Materials with Various Defects." Zeitschrift für Naturforschung A 71, no. 6 (2016): 493–99. http://dx.doi.org/10.1515/zna-2015-0383.

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AbstractNacreous composite materials have excellent mechanical properties, such as high strength, high toughness, and wide phononic band gap. In order to research band structure characteristics of nacreous composite materials with various defects, supercell models with the Brick-and-Mortar microstructure are considered. An efficient multi-level substructure algorithm is employed to discuss the band structure. Furthermore, two common systems with point and line defects and varied material parameters are discussed. In addition, band structures concerning straight and deflected crack defects are

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Alzebdeh, Khalid, Mahmoud Nassar, Nasr Al-Hinai, Ramanathan Arunachalam, and Hani Al-Rawahi. "Assessment of Induced-Delamination of Drilled Date Palm Fronds Polypropylene Bio-Composites." Key Engineering Materials 845 (May 2020): 3–8. http://dx.doi.org/10.4028/www.scientific.net/kem.845.3.

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Utilization of natural fibers in a form of filler materials in composite structures has been successfully implemented in a broad range of industrial applications. In general, natural fibers have many advantages over synthetic counterparts, (e.g. glass and carbon) including lower density, ability to muffling vibration as well as its positive environmental impact. Hence, natural fibers can be used to enhance the characteristics of composite polymers. Expected improvements may include good thermal and acoustic insulating properties and better electrical resistance. However, in order to qualify an

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12

Abdulfatai, Usman. "Quantitative Structure-Properties Relationships and Molecular Dynamic Simulations of Some Lubricant Additives (LAs)." issue 2 3, no. 2 (2020): 36–45. http://dx.doi.org/10.48103/jjeci35202.

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The degradation of this zinc-dialkyl-dithiophosphate (ZDDP), at a temperature less than 246K often leads to the release of phosphorus, sulphur, and zinc which are indirectly responsible for the emission of poisonous gas from the exhaust pipe of the motor cars. Four QSPR mathematical models were generated from 39 structures of lubricant additives (LAs) and the structural features were found to corresponds to the coefficients of; internal correlation (R2 ) of 0.95, adjusted squared correlation (R2 adj) of 0.94, Cross-validation (Q2cv) of 0.90, and the external validation (R2 pred) of 0.54. The m

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Kasiński, Adam, Monika Zielińska-Pisklak, Sebastian Kowalczyk, et al. "Synthesis and Characterization of New Biodegradable Injectable Thermosensitive Smart Hydrogels for 5-Fluorouracil Delivery." International Journal of Molecular Sciences 22, no. 15 (2021): 8330. http://dx.doi.org/10.3390/ijms22158330.

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In this paper, injectable, thermosensitive smart hydrogel local drug delivery systems (LDDSs) releasing the model antitumour drug 5-fluorouracil (5-FU) were developed. The systems were based on biodegradable triblock copolymers synthesized via ring opening polymerization (ROP) of ε-caprolactone (CL) in the presence of poly(ethylene glycol) (PEG) and zirconium(IV) acetylacetonate (Zr(acac)4), as co-initiator and catalyst, respectively. The structure, molecular weight (Mn) and molecular weight distribution (Đ) of the synthesized materials was studied in detail using nuclear magnetic resonance (N

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14

Noii, Nima, Amirreza Khodadadian, Jacinto Ulloa, et al. "Bayesian inversion for unified ductile phase-field fracture." Computational Mechanics 68, no. 4 (2021): 943–80. http://dx.doi.org/10.1007/s00466-021-02054-w.

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AbstractThe prediction of crack initiation and propagation in ductile failure processes are challenging tasks for the design and fabrication of metallic materials and structures on a large scale. Numerical aspects of ductile failure dictate a sub-optimal calibration of plasticity- and fracture-related parameters for a large number of material properties. These parameters enter the system of partial differential equations as a forward model. Thus, an accurate estimation of the material parameters enables the precise determination of the material response in different stages, particularly for th

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15

Ogilvie, Steven, Evgeny Isakov, Colin Taylor, and Paul Glover. "A NEW HIGH RESOLUTION OPTICAL METHOD FOR OBTAINING THE TOPOGRAPHY OF FRACTURE SURFACES IN ROCKS." Image Analysis & Stereology 21, no. 1 (2011): 61. http://dx.doi.org/10.5566/ias.v21.p61-66.

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Surface roughness plays a major role in the movement of fluids through fracture systems. Fracture surface profiling is necessary to tune the properties of numerical fractures required in fluid flow modelling to those of real rock fractures. This is achieved using a variety of (i) mechanical and (ii) optical techniques. Stylus profilometry is a popularly used mechanical method and can measure surface heights with high precision, but only gives a good horizontal resolution in one direction on the fracture plane. This method is also expensive and simultaneous coverage of the surface is not possib

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Prysiazhnyi, Andrii H., Volodymyr V. Kukhar, Vadym Hornostai, Ekaterina Kudinova, Maryna Korenko, and Oleksandr S. Anishchenko. "Mathematical Models for Forecasting of 10Mn2VNb Steel Heavy Plates Mechanical Properties." Materials Science Forum 1045 (September 6, 2021): 237–45. http://dx.doi.org/10.4028/www.scientific.net/msf.1045.237.

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The problem urgency for determining the optimal rolling and heat treatment schedules for providing the required indices of heavy plates physical and mechanical properties is shown. The use of statistical mathematical models for solving this problem is substantiated and the methodology for their design is described. Statistical mathematical models were designed using the mathematical statistics methods and Data Mining tools to determine the yield strength, ultimate tensile strength and percent elongation for 10Mn2VNb steel plates rolled under 3600 heavy plate mill conditions. Software for the n

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17

Zajączkowski, Jerzy. "Mathematical Modelling of Mechanical Properties of Textiles Subjected to Tension." Fibres and Textiles in Eastern Europe 25 (October 31, 2017): 104–6. http://dx.doi.org/10.5604/01.3001.0010.4635.

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Mathematical modelling of textiles subjected to one-directional tensile forces is presented. The models include the straightening of fibres at the beginning, accompanied by the compression of neighbouring fibres, and finally the elongation of the material of fibres when the straightening stops growing. As the result of fibres stretching, the transverse compressive forces hold all the fibres together and are responsible for maintaining the friction forces. Two models are proposed: the rhombus, representing perpendicular fibres, and the helix, representing parallel fibres. The final equations de

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18

Senuma, Takehide, Masayoshi Suehiro, and Hiroshi Yada. "Mathematical Models for Predicting Microstructural Evolution and Mechanical Properties of Hot Strips." ISIJ International 32, no. 3 (1992): 423–32. http://dx.doi.org/10.2355/isijinternational.32.423.

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19

Landsman, Adam S., and Thomas J. Chang. "Can synthetic bone models approximate the mechanical properties of cadaveric first metatarsal bone?" Journal of Foot and Ankle Surgery 37, no. 2 (1998): 122–27. http://dx.doi.org/10.1016/s1067-2516(98)80091-4.

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20

Oliveira, Luis Vicente Franco. "Mathematical Models for Measuring Mechanical Properties in Experimental Animal Lung: A Literature Review." Medical Science and Technology 55 (2014): 1–9. http://dx.doi.org/10.12659/mst.893173.

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21

Todeschini, Roberto, Viviana Consonni, Davide Ballabio, et al. "QSPR STUDY OF RHEOLOGICAL AND MECHANICAL PROPERTIES OF CHLOROPRENE RUBBER ACCELERATORS." Rubber Chemistry and Technology 87, no. 2 (2014): 219–38. http://dx.doi.org/10.5254/rct.13.87918.

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ABSTRACT In this preliminary study, mathematical models based on Quantitative Structure Property Relationships (QSPR) were applied in order to analyze how molecular structure of chloroprene rubber accelerators relates to their rheological and mechanical properties. QSPR models were developed in order to disclose which structural features mainly affect the mechanism of vulcanization. In such a way QSPR can help in a faster and more parsimonious design of new chloroprene rubber curative molecules. Regression mathematical models were calibrated on two rheological properties (scorch time and optim

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22

Irastorza, Ramiro M., Bernard Drouin, Eugenia Blangino, and Diego Mantovani. "Mathematical Modeling of Uniaxial Mechanical Properties of Collagen Gel Scaffolds for Vascular Tissue Engineering." Scientific World Journal 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/859416.

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Small diameter tissue-engineered arteries improve their mechanical and functional properties when they are mechanically stimulated. Applying a suitable stress and/or strain with or without a cycle to the scaffolds and cells during the culturing process resides in our ability to generate a suitable mechanical model. Collagen gel is one of the most used scaffolds in vascular tissue engineering, mainly because it is the principal constituent of the extracellular matrix for vascular cells in human. The mechanical modeling of such a material is not a trivial task, mainly for its viscoelastic nature

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23

Pavlov, V. D. "Mathematical models of resonance and antiresonance processes." Herald of the Ural State University of Railway Transport, no. 1 (2021): 17–27. http://dx.doi.org/10.20291/2079-0392-2021-1-17-27.

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The use of the symbolic (complex) method has significantly simplified the study of resonance and near-resonance phenomena, in particular, it has made it possible to deeply unify and formalize the consideration of various mechanical systems. The cumbersome and time-consuming operations associated with composing and solving differential equations have been replaced by simple algebraic transformations. The method is based on the mechanical analogue of Ohm’s law in a complex representation and the concept of mechanical reactance, resistance, impedance, susseptance, conductance and admittance. Reso

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TSUCHIYA, Satoshi, and Hiroshi OMURA. "Forecast Models for Slope Rupture Time and the Mathematical Analysis of Their Mechanical Properties." Landslides 25, no. 2 (1988): 2–8. http://dx.doi.org/10.3313/jls1964.25.2_2.

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25

Kvačkaj, Tibor, and Michal Zemko. "Recrystallization and Mechanical Properties of Hot Rolled Seamless Steel Tubes." Materials Science Forum 558-559 (October 2007): 1107–13. http://dx.doi.org/10.4028/www.scientific.net/msf.558-559.1107.

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The article deals with FEM analysis, with mathematical modeling of structure evolution and with prediction of mechanical properties during hot rolling of seamless steel tubes. With use of DEFORM 3D software the present state of stretch-reducing mill of Železiarne Podbrezová, Inc was described. The next part of article presents mathematical model describing the tube production for low carbon steels grade St52 on analyzed calibration sequence. Values of temperature, strain and strain rate from FEM simulation were substituted into the mathematical models of recrystallization, grain growth, transf

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Sun, Qiang, and Yuehai Sun. "The generation principle, mathematical models of variable involute, and its application." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 232, no. 5 (2017): 828–41. http://dx.doi.org/10.1177/0954406216688498.

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A novel generation method of tooth profile curve is presented in this paper. It introduces the concept of a variable involute whose curve is generated by the generating line rolling and slipping on the base circle simultaneously. The generation principle of variable involute is described and the equation of variable involute is deduced. Then, equations are established to synthesize a conjugate profile for the gear teeth, which include some restrictions to keep the involute meshing properties. With a selectable and arbitrary relative slippage which is defined as a slipping function, the variabl

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Egorova, S. V., O. V. Makhnenko, G. Yu Saprykina, and D. P. Sineok. "Mathematical models of the dependence of mechanical properties on chemical composition of steels for ESW." Avtomatičeskaâ svarka (Kiev) 2021, no. 1 (2021): 50–60. http://dx.doi.org/10.37434/as2021.01.09.

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28

Martin, P. P. "Analytic properties of the partition function for statistical mechanical models." Journal of Physics A: Mathematical and General 19, no. 16 (1986): 3267–77. http://dx.doi.org/10.1088/0305-4470/19/16/025.

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29

Abdallah, Wafaa, Jacqueline Saliba, Ziubir-Mehdi Sbartaï, Marwan Sadek, Fadi Hage Chehade, and S. Mohammed ElAchachi. "Reliability analysis of non-destructive testing models within a probabilistic approach." MATEC Web of Conferences 281 (2019): 04003. http://dx.doi.org/10.1051/matecconf/201928104003.

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The diagnosis of reinforced concrete is essential to detect the degradation and thus maintain the structural performance of civil engineering structures. This paper aims to establish a mathematical relationship between the ultrasonic pulse velocity UPV (considered as an observable variable) and two concrete properties indicators (compressive strength fc and water content W) within a probabilistic framework. Synthetic simulations are proposed to derive a conversion model between the statistical properties of the output and the input parameters for a reinforced concrete structure by taking into

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30

Kotsay, Galyna, and Aleksandra Brzóska. "Effect of Borosilicate Glass Wastes and Synthetic Silica on Cement Products Properties." Chemistry & Chemical Technology 15, no. 2 (2021): 312–18. http://dx.doi.org/10.23939/chcht15.02.312.

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This paper presents the findings of research study on the effect of borosilicate glass wastes on properties of cement paste and mortar. The borosilicate glass contains three times less alkali than soda-lime glass and about 12 % of boron oxide, so pozzolanic activity of borosilicate glass is three times higher compared to soda-lime glass. In order to increase the pozzolanic activity of glass precipitated synthetic silica was used. Mathematical models were used in order to test the effect of synthetic silica on pozzolanic activity of borosilicate glass. Test results indicate that replacement of

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Egorova, S. V., O. V. Makhnenko, G. Yu Saprykina, and D. P. Syneok. "Mathematical models of the dependence of mechanical properties on chemical composition of steels for ESW." Paton Welding Journal 2021, no. 1 (2021): 45–54. http://dx.doi.org/10.37434/tpwj2021.01.09.

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Grigorie, Laura Diana, Alina Elena Romanescu, and Daniela Vintilă. "Establish Dependency Relations between Chemical Composition and Mechanical Properties of Aluminum Alloy 6082 AlSi₁MgMn." Applied Mechanics and Materials 822 (January 2016): 389–96. http://dx.doi.org/10.4028/www.scientific.net/amm.822.389.

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This paper presents mathematical models derived from the study of the chemical composition and mechanical properties of aluminum alloy type 6082 AlSi1MgMn. They were determined based on the study of the chemical composition of 30 batches of alloy 6082 and their mechanical properties. Mathematical models obtained were checked by Fisher test, and the two of them had the optimal coefficient of determination. Aluminum alloy was hot rolled and hardened through heat treatments.

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Dubko, A. G., R. S. Osipov, Yu V. Bondarenko, and O. F. Bondarenko. "Electronic devices for studying mechanical properties of biological tissues." Технология и конструирование в электронной аппаратуре, no. 5-6 (2020): 40–47. http://dx.doi.org/10.15222/tkea2020.5-6.40.

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The paper shows the relevance of studying the mechanical properties of biological tissues and biocompatible materials for solving the problems of general and reconstructive surgery, transplantology, manual therapy, virtual simulation of surgical operations, robotic surgery, etc. The authors present basic information about biological tissue as an object of research and give a brief overview of the devices used for studying the mechanical characteristics of biological tissues. An experimental system for testing deformations of biological tissues and biocompatible materials during compression is

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Autuori, Giuseppina, Federico Cluni, Vittorio Gusella, and Patrizia Pucci. "Mathematical models for nonlocal elastic composite materials." Advances in Nonlinear Analysis 6, no. 4 (2017): 355–82. http://dx.doi.org/10.1515/anona-2016-0186.

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AbstractIn this paper we derive and solve nonlocal elasticity a model describing the elastic behavior of composite materials, involving the fractional Laplacian operator. In dimension one we consider in (($\mathcal{D}$)) the case of a nonlocal elastic rod restrained at the ends, and we completely solve the problem showing the existence of a unique weak solution and providing natural sufficient conditions under which this solution is actually a classical solution of the problem. For the model (($\mathcal{D}$)) we also perform numerical simulations and a parametric analysis, in order to highligh

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Petrovskaya, Olga V., Evgeny D. Petrovskiy, Inna N. Lavrik, and Vladimir A. Ivanisenko. "A study of structural properties of gene network graphs for mathematical modeling of integrated mosaic gene networks." Journal of Bioinformatics and Computational Biology 15, no. 02 (2017): 1650045. http://dx.doi.org/10.1142/s0219720016500451.

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Gene network modeling is one of the widely used approaches in systems biology. It allows for the study of complex genetic systems function, including so-called mosaic gene networks, which consist of functionally interacting subnetworks. We conducted a study of a mosaic gene networks modeling method based on integration of models of gene subnetworks by linear control functionals. An automatic modeling of 10,000 synthetic mosaic gene regulatory networks was carried out using computer experiments on gene knockdowns/knockouts. Structural analysis of graphs of generated mosaic gene regulatory netwo

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Et. al., A. A. Orekhov,. "Creation of Polymer Coatings for Improving of Protective Properties of Surfaces." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 2 (2021): 2698–702. http://dx.doi.org/10.17762/turcomat.v12i2.2294.

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In this paper, the preparation of polymer coatings on the surface of metal structural elements is considered to improve their physical, mechanical and strength properties. It is shown that the behavior of substrate samples under mechanical loads can be estimated using mathematical modeling methods. The properties of coatings and the mechanical properties of coated and uncoated metal plates have been evaluated. Methods for constructing mathematical models of metal plates of various structures are proposed.

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Wang, Qiang, and Li Jiang. "Bearing Grounding Mechanical Properties of Engineering Vehicle Retreaded Tire." E3S Web of Conferences 198 (2020): 01026. http://dx.doi.org/10.1051/e3sconf/202019801026.

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In this study, a multivariate composite layer model, computer geometry models, contact pair models, finite element analysis (FEA) models, and bearing grounding mechanical property test system were constructed. FEA and experimental study on the bearing grounding mechanical properties of retreaded tires of engineering vehicles were processed. Therefore, features and rules of load grounding pressure, load grounding mark, load grounding area, load grounding coefficient, and load grounding hardness coefficient of retreaded tires under the static grounding working condition were summarized, from whi

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Petrushin, G. D., and A. G. Petrushina. "Determination of the area of mechanical hysteresis loop using mathematical models." Industrial laboratory. Diagnostics of materials 86, no. 5 (2020): 59–64. http://dx.doi.org/10.26896/1028-6861-2020-86-5-59-64.

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A method of the hysteresis loop relates to the direct methods for determination of the energy dissipation and studying the inelasticity in the material. The method is based on the direct formation of the mechanical hysteresis loop by static loading and unloading of the sample and measuring of the corresponding deformations. The relative energy dissipation is defined as the ratio of the hysteresis loop area to the elastic energy corresponding to the maximum amplitude of strain. Construction of the hysteresis loop is performed on the installation «torsional pendulum for determination of the mech

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Shalwan, A., S. Oraby, and A. Alaskari. "Mathematical Modelling of the Interfacial Adhesion of Date Palm/Epoxy." Journal of Materials Science Research 5, no. 3 (2016): 29. http://dx.doi.org/10.5539/jmsr.v5n3p29.

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<p class="1Body">In recent years, high interests has emerged to use natural fibres as alternative reinforcements synthetic due to its unique benefits regarding renewability, recyclability, degradability, lightweight, and low cost. Recent investigations revealed that the mechanical performance of fibre reinforced polymer composites (FRPCs) is predicated mainly on the interfacial adhesion of fibre with the matrices. In the current work, an empirical approach was exploited to develop mathematical models using linear regression routines available in SPSS IBM program. Such models are establis

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Szala, Grzegorz, and Bogdan Ligaj. "Description of Cyclic Properties of Steel in Variability Conditions of Mean Values and Amplitudes of Loading Cycles." Materials Science Forum 726 (August 2012): 69–76. http://dx.doi.org/10.4028/www.scientific.net/msf.726.69.

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The work includes description of determination of two-parametric fatigue characteristics (TFC) on the base of experimental test results and description of mathematical models of these characteristics. Mathematical models were verified in C45 and 41Cr4 tests that are essentially different from the point of view of mechanical properties. On the base of analysis of verification test results there were determined ranges of applications of TFC models described in the work.

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Oladele, I. O., and N. I. Agbeboh. "Development of mathematical models and estimation for the mechanical properties of organic fiber reinforced polyester composites." Fibers and Polymers 18, no. 7 (2017): 1336–45. http://dx.doi.org/10.1007/s12221-017-1064-2.

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Tipirneni, Prithvi, Vishal Jindal, Michael J. Janik, and Scott T. Milner. "Tight binding models accurately predict band structures for copolymer semiconductors." Physical Chemistry Chemical Physics 22, no. 35 (2020): 19659–71. http://dx.doi.org/10.1039/d0cp01833c.

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Conjugated polymers possess a wide range of desirable properties including accessible band gaps, plasticity, tunability, mechanical flexibility and synthetic versatility, making them attractive as active materials in organic photovoltaics (OPVs).

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Martin, P. P. "Temperley-Lieb algebras and the long distance properties of statistical mechanical models." Journal of Physics A: Mathematical and General 23, no. 1 (1990): 7–30. http://dx.doi.org/10.1088/0305-4470/23/1/009.

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Bassyouni, M. "Dynamic mechanical properties and characterization of chemically treated sisal fiber-reinforced polypropylene biocomposites." Journal of Reinforced Plastics and Composites 37, no. 23 (2018): 1402–17. http://dx.doi.org/10.1177/0731684418798049.

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The incorporation of sisal fiber as reinforcement materials for polymers will be advantageous if it is synthesized and manufactured perfectly. In this study, surface modification using polymeric diphenylmethane di-isocyanate and gamma-aminopropyltriethoxysilane was applied for further amelioration of polypropylene–sisal bonding. Surface morphology, thermomechanical properties, thermal stability, and chemical bonding were investigated using scanning electron microscopy, dynamic mechanical analysis, thermogravimetric analysis, and Fourier transform infrared spectroscopy, respectively. A number o

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Zhao, Y., Z. M. Jin, and R. K. Wilcox. "Modelling cement augmentation: A comparative experimental and finite element study at the continuum level." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 224, no. 7 (2009): 903–11. http://dx.doi.org/10.1243/09544119jeim696.

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Subject-specific computational models of anatomical components can now be generated from image data and used in the assessment of orthopaedic interventions. However, little work has been undertaken to model cement-augmented bone using these methods. The purpose of this study was to investigate different methods of representing a trabecular-like material (open-cell polyurethane foam, Sawbone, Sweden) augmented with poly(methyl methacrylate) (PMMA) bone cement in a finite element (FE) model. Three sets of specimens (untreated, fully augmented with cement, partially augmented with cement) were im

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Meng, Gong Ge, Ji Jun Chu, Jing Yue Luan, and Yong Sheng Chen. "Correlations between Coating Components and Mechanical Properties of Weld Deposited Metal." Advanced Materials Research 239-242 (May 2011): 1353–58. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.1353.

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An electrode coating slag system CaO-CaF2-BaO-TiO2-SiO2 has been designed after analyzing several domestic and abroad basic slag system. In view of uniform design method and computer program, the experiments were arranged. Nine to eleven coating components were taken as independent variables and they were divided into five levels in all twenty-nine experiments. Four mechanical properties and diffusible hydrogen content of weld deposited metal were taken as target functions. The data were analyzed with mathematical and statistic software. The results give the influencing trend figures of coatin

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Wang, Zhao Xia, Wen Cai Xu, and De Gao. "Effects of Processing Temperature on the Mechanical Properties of Calcium Carbonate-Plastic Composite Packaging Materials." Applied Mechanics and Materials 200 (October 2012): 369–72. http://dx.doi.org/10.4028/www.scientific.net/amm.200.369.

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The basic parameters of calcium carbonate-plastic composite packaging materials, such as tensile strength and flexural strength, were obtained by means of mechanical properties test at different temperatures. Through the experimental tests, the best processing temperature was determined at 190°C and the test data were fitted and optimized. Also, the residual of fitting curves was calculated by using the mathematical analysis software of MATLAB. Besides, mathematical models were established between temperatures and target parameters, from which the mechanical properties of materials at any othe

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Nuge, Tamrin, Kim Yeow Tshai, Siew Shee Lim, Norshariza Nordin, and Md Enamul Hoque. "Characterization and optimization of the mechanical properties of electrospun gelatin nanofibrous scaffolds." World Journal of Engineering 17, no. 1 (2020): 12–20. http://dx.doi.org/10.1108/wje-04-2019-0119.

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Purpose Electrospinning is a versatile technique for producing polymeric nanofibers by the application of electrostatic forces. The electrospinnability of polymeric solutions and the properties of electrospun nanofibers can be influenced and tuned by the process parameters. This paper aims to investigatethe influence of three key process parameters on the tensile strength of electrospun gelatin nanofibrous scaffold. Design/methodology/approach The experiments were conducted with a custom-built electrospinning system. Design of experiments of the three operating variables, namely, gelatin conce

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Dembiczak, Tomasz, and Marcin Knapiński. "Shaping Microstructure and Mechanical Properties of High-Carbon Bainitic Steel in Hot-Rolling and Long-Term Low-Temperature Annealing." Materials 14, no. 2 (2021): 384. http://dx.doi.org/10.3390/ma14020384.

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Based on the research results, coefficients in constitutive equations, describing the kinetics of dynamic, meta-dynamic, and static recrystallization in high-carbon bainitic steel during hot deformation were determined. The developed mathematical model takes into account the dependence of the changing kinetics in the structural size of the preliminary austenite grains, the value of strain, strain rate, temperature, and time. Physical simulations were carried out on rectangular specimens. Compression tests with a flat state of deformation were carried out using a Gleeble 3800. Based on dilatome

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Shevtsov, Nikita O., Sergei V. Stepanov, and Tatiana A. Pospelova. "THE STUDY OF THE PREDICTIVE ABILITY OF NUMERICAL AND ANALYTICAL MODELS (THE CASE OF MUTUAL WELL IMPACT EVALUATION)." Tyumen State University Herald. Physical and Mathematical Modeling. Oil, Gas, Energy 6, no. 3 (2020): 131–42. http://dx.doi.org/10.21684/2411-7978-2020-6-3-131-142.

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The main purpose of any model is to provide an opportunity to study the model object and the processes running in it for obtaining the predictive characteristics, among other reasons. In this connection, it is important to know, which mathematical models can help in analyzing and supporting oil deposit development, in particular, in assessing the mutual influence of production and injection wells. The characteristic features of mathematical modeling of field development include the oil deposits being located in natural formations that cannot be directly observed, as well as the complex filtrat

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