Academic literature on the topic 'Material Transformations'

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Journal articles on the topic "Material Transformations"

1

Margienė, Asta, and Simona Ramanauskaitė. "Toward Adaptability of E-Evaluation: Transformation from Tree-Based to Graph-Based Structure." Applied Sciences 11, no. 9 (2021): 4082. http://dx.doi.org/10.3390/app11094082.

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The COVID-19 pandemic and quarantine have forced students to use distance learning. Modern information technologies have enabled global e-learning usage but also revealed a lack of personalization and adaptation in the learning process when compared to face-to-face learning. While adaptive e-learning methods exist, their practical application is slow because of the additional time and resources needed to prepare learning material and its logical adaptation. To increase e-learning materials’ usability and decrease the design complexity of automated adaptive students’ work evaluation, we propose
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Gorobets, Valery, Ievgen Antypov, Viktor Trokhaniak, and Yurii Bohdan. "Experimental and numerical studies of heat and mass transfer in low-temperature heat accumulator with phase transformations of accumulating material." MATEC Web of Conferences 240 (2018): 01009. http://dx.doi.org/10.1051/matecconf/201824001009.

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Accumulation of thermal energy is produced with the aim of storing at certain times, when there is an overabundance of this energy and its further use in other periods of time when there is a deficit thermal energy. Thermal energy storage may be carried out under heating of any material (water, solid materials etc.) or by using the phase or chemical transformation of the material (melting and crystallization processes, direct and reverse chemical reaction). Thermal accumulators with phase or chemical transformations are allowed to concentrate a large amount of energy in a relatively small volu
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Antoni, Grégory. "Effects of ThermoMechanical Coupling in Tribological Surface Transformations: A One-Dimensional Modelling Including Irreversible Solid-Solid Phase Transformations and Classical Plasticity." Journal of Materials 2013 (April 28, 2013): 1–7. http://dx.doi.org/10.1155/2013/892050.

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Under compressive loads combined with friction, some materials undergo Tribological Surface Transformations (TSTs) on the surface of the loaded parts and in the immediately vicinity, which in the case of metals, are known as irreversible solid-solid phase transformations. During the solid-solid phase transformations occurring under mechanical loads, TRansformation Induced Plasticity (TRIP) processes are generated at much lower stress levels than those associated with the yield strength of the material in classical plasticity. In order to assess the effects of thermomechanical coupling in these
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Weng, Zi-Hua. "Basic postulates of some coordinate transformations within material media." AIP Advances 12, no. 12 (2022): 125016. http://dx.doi.org/10.1063/5.0132194.

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This paper aims to explore the physical quantities of several invariants, including the basic postulates of some types of crucial coordinate transformations, conservation laws, and continuity equations, in the electromagnetic and gravitational fields. Maxwell first utilized quaternions to describe the electromagnetic theory. Subsequent scholars make use of octonions to study the physical properties of electromagnetic and gravitational fields simultaneously, including the octonion field strength, field source, angular momentum, torque, and force. When an octonion coordinate system transforms ro
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Cottam, Ryan, Vladimir Luzin, Kevin Thorogood, Yat C. Wong, and Milan Brandt. "The Role of Metallurgical Solid State Phase Transformations on the Formation of Residual Stress in Laser Cladding and Heating." Materials Science Forum 777 (February 2014): 19–24. http://dx.doi.org/10.4028/www.scientific.net/msf.777.19.

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There are two major types of solid state phase transformations in metallic materials; the formation of second phase particles during heat treatments, and the transformation of the matrix from one crystalline packing arrangement to another during either heating or cooling. These transformations change the spacing between adjacent atoms and can thus influence the residual stress levels formed. The heating and cooling cycles of materials processing operations using lasers such as cladding and melting/heating, can induce phase transformations depending on the character of the material being proces
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Waimann, Johanna, Philipp Junker, and Klaus Hackl. "A variational material model for transformation-induced plasticity in polycrystalline steels." Journal of the Mechanical Behavior of Materials 24, no. 5-6 (2015): 153–59. http://dx.doi.org/10.1515/jmbm-2015-0022.

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AbstractThis work presents a variational material model for transformation-induced plasticity in steels. We will use the principle of the minimum of the dissipation potential to develop a coupled material model for plastic deformations and phase transformations that simultaneously accounts for the hardening effects that play an important role. We will use a polycrystalline approach and introduce a combined Voigt/Reuß bound and a coupled ansatz for the dissipation functional to model the simultaneous effects of plastic deformations and phase transformations. Finally, we will present the first n
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Jensen, Casper Bruun. "Material Itineraries: Southeast Asian Urban Transformations." East Asian Science, Technology and Society: An International Journal 15, no. 2 (2021): 124–34. http://dx.doi.org/10.1080/18752160.2021.1917840.

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8

Gubin, Sergey P. "Triad matter –- substance – material." Radioelectronics. Nanosystems. Information Technologies. 14, no. 3 (2022): 341–48. http://dx.doi.org/10.17725/rensit.2022.14.341.

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An essay on the philosophical aspects of materials science in the absence of a modern philosophical category "material" is presented. The features of the categories "substance" and "material" are considered, which express the distinctive properties of the corresponding objects of nature - the formlessness of the substance and the proper form of the material, the size of the particles of the substance and the structural form of the material. Substance-material mutual transformations, their energy aspects, a certain conditionality of the substance-material boundary, and adequate filling of the c
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9

Ding, Zi Shan, Bei Zhi Li, Pan Zou, and Steven Y. Liang. "Material Phase Transformation during Grinding." Advanced Materials Research 1052 (October 2014): 503–8. http://dx.doi.org/10.4028/www.scientific.net/amr.1052.503.

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This study investigated the process parameters effect on the phase transformation during grinding by experimental validation and correlation analyses. The quantitative material phase link to the kinetics of diffusion-controlled as well as diffusionless transformations in different strain rate and contact zone temperature by examining process parameters is presented. Based upon the mechanical physics-based modeling and prediction for the volume fraction of phase transformation in continuous heating under anisothermal conditions, the correlation between volume fractions of phase in sequential se
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Hubbell, Jeffrey A. "In Situ Material Transformations in Tissue Engineering." MRS Bulletin 21, no. 11 (1996): 33–35. http://dx.doi.org/10.1557/s0883769400031821.

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Novel applications exist for biomedical materials that can undergo transitions in material properties in situ—that is, at the site of implantation in the body. Such transitions in polymeric biomaterials can be accomplished by crosslinking a material in situ, by heating or cooling to induce thermal transitions, and by precipitating polymer from solution in situ. This article will point out the need for materials that can be induced to undergo such transitions in situ and will describe selected tissue-engineering approaches that have been employed for this purpose.Delivering materials to the bod
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