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Journal articles on the topic 'Material appearance modeling'

Author: Grafiati

Published: 1 June 2024

Last updated: 31 July 2025

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1

Tominaga, Shoji, and Giuseppe Claudio Guarnera. "Measuring, Modeling, and Reproducing Material Appearance from Specular Profile." Color and Imaging Conference 2019, no. 1 (2019): 279–83. http://dx.doi.org/10.2352/issn.2169-2629.2019.27.50.

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A method is proposed for measuring, modeling, and reproducing material appearance from the specular profile representing reflectance distribution around a specular highlight. Our method is aimed at opaque materials with a highly glossy surface like plastic, ceramic, and metals. Hence, the material surface is assumed to be not a perfect mirror, but a surface with some roughness. We do not use a gonio-spectrophometer nor an image-based measurement setup. Instead, we make use of a gloss meter with a function to measure the specular profile, containing for glossy materials appearance such as rough

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Baranoski, Gladimir. "Hyperspectral Modeling of Material Appearance: General Framework, Challenges and Prospects." Revista de Informática Teórica e Aplicada 22, no. 2 (2015): 203. http://dx.doi.org/10.22456/2175-2745.56437.

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The main purpose of this tutorial is to address theoretical and practical issues involved in the development of predictive material appearancemodels for interdisciplinary applications within and outside the visible spectral domain. We examine the specific constraints and pitfalls found in each of the key stages of the model development framework, namely data collection, design and evaluation, and discuss alternatives to enhance the effectiveness of the entire process. Although predictive material appearance models developed by computer graphics researchers are usually aimed at realistic image

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Marelli, Davide, Simone Bianco, and Gianluigi Ciocca. "Acquisition and Modeling of Material Appearance Using a Portable, Low Cost, Device." Sensors 25, no. 4 (2025): 1143. https://doi.org/10.3390/s25041143.

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Material appearance acquisition allows researchers to capture the optical properties of surfaces and use them in different tasks such as material analysis, digital twins reproduction, 3D configurators, augmented and virtual reality, etc. Precise acquisition of such properties requires complex and expensive hardware. In this paper, we aim to answer the following research challenge: Can we design an accurate enough but low-cost and portable device for material appearance acquisition? We present the rationale behind the design of our device using consumer-grade hardware components. Ultimately, ou

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Hu, Yiwei, Chengan He, Valentin Deschaintre, Julie Dorsey, and Holly Rushmeier. "An Inverse Procedural Modeling Pipeline for SVBRDF Maps." ACM Transactions on Graphics 41, no. 2 (2022): 1–17. http://dx.doi.org/10.1145/3502431.

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Procedural modeling is now the de facto standard of material modeling in industry. Procedural models can be edited and are easily extended, unlike pixel-based representations of captured materials. In this article, we present a semi-automatic pipeline for general material proceduralization. Given Spatially Varying Bidirectional Reflectance Distribution Functions (SVBRDFs) represented as sets of pixel maps, our pipeline decomposes them into a tree of sub-materials whose spatial distributions are encoded by their associated mask maps. This semi-automatic decomposition of material maps progresses

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Liao, Chenxi, Masataka Sawayama, and Bei Xiao. "Unsupervised learning reveals interpretable latent representations for translucency perception." PLOS Computational Biology 19, no. 2 (2023): e1010878. http://dx.doi.org/10.1371/journal.pcbi.1010878.

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Humans constantly assess the appearance of materials to plan actions, such as stepping on icy roads without slipping. Visual inference of materials is important but challenging because a given material can appear dramatically different in various scenes. This problem especially stands out for translucent materials, whose appearance strongly depends on lighting, geometry, and viewpoint. Despite this, humans can still distinguish between different materials, and it remains unsolved how to systematically discover visual features pertinent to material inference from natural images. Here, we develo

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Fan, Xiao Hong, Bin Xu, Yong Xu, et al. "Application of Materials Studio Modeling in Crystal Structure." Advanced Materials Research 706-708 (June 2013): 7–10. http://dx.doi.org/10.4028/www.scientific.net/amr.706-708.7.

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Modeling of crystal structure in material science curriculum was practiced and applied to keep it simple and understandable by using MS. The unit cells and atomic configurations are produced to show the theory system of geometry description of crystal structure. Many examples, as diamond, graphite, nanomaterial and advanced carbon materials, are employed to describe the main application of MS in material science teaching. According to these atomic modeling configurations, crystal structures exhibit a clearly and understandable appearance for us. So, the meaning of learning and understanding th

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Naify, Christina, James Stephens, and Aytahn Benavi. "Dynamic characterization of off the shelf polymer composites printed with fused deposition modeling." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 266, no. 1 (2023): 1011–19. http://dx.doi.org/10.3397/nc_2023_0122.

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Fused deposition modeling (FDM) is the most common and cost effective form of additive manufacturing (AM). Due to the ubiquity of the approach, a range of off the shelf composite materials have been developed by companies, often with the goal of improving the printed part's physical appearance or increasing or decreasing the weight of the part. These composites typically have a base material of a standard FDM printed polymer, with additives such as metal particulates or lightweight filler added. This study will examine the dynamic properties of a set of off the shelf materials to characterize

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Sobchenko, V. V., V. A. Zhaivoronok, and H. O. Sobchenko. "Modeling of cooling process of hydroaluminosilicate materials." Кераміка: наука і життя, no. 3(52) (September 30, 2021): 21–25. http://dx.doi.org/10.26909/csl.3.2021.3.

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Porous thermal-insulation materials are widely used in building industry, the advantages of which are cheapness and efficiency. Their commercial appearance is also important in their implementation. Porous thermal-insulation materials to prevent sticking can be packaged only after cooling and after the main thermal processes and classification. The process of cooling porous hydroaluminosilicate materials by the method of modeling with the subsequent check on the laboratory equipment with a fluidized bed is investigated in the work. The main thermal process takes place at a temperature of

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Guo, Jie, Zeru Li, Xueyan He, et al. "MetaLayer: A Meta-Learned BSDF Model for Layered Materials." ACM Transactions on Graphics 42, no. 6 (2023): 1–15. http://dx.doi.org/10.1145/3618365.

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Reproducing the appearance of arbitrary layered materials has long been a critical challenge in computer graphics, with regard to the demanding requirements of both physical accuracy and low computation cost. Recent studies have demonstrated promising results by learning-based representations that implicitly encode the appearance of complex (layered) materials by neural networks. However, existing generally-learned models often struggle between strong representation ability and high runtime performance, and also lack physical parameters for material editing. To address these concerns, we intro

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Gan, Xu Sheng, Hua Ping Li, and Jing Shun Duanmu. "Research on Aviation Material with Aviation Mishap Prediction Model Based on Neural Network and its BP Algorithm." Applied Mechanics and Materials 540 (April 2014): 492–95. http://dx.doi.org/10.4028/www.scientific.net/amm.540.492.

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In order to reduce the appearance of aviation material mishap, it is important to predict the aviation material mishap for safety management and decision-making body. Considering the advantage of neural network modeling, an aviation material mishap prediction based on neural network and its BP algorithm model is proposed. An actual example on fight mishap 10000-Hour-Rate data of USAF illustrates that the proposed prediction model has an accurate prediction.

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Iser, TomáŠ, Tobias Rittig, Emilie Nogué, Thomas Klaus Nindel, and Alexander Wilkie. "Affordable Spectral Measurements of Translucent Materials." ACM Transactions on Graphics 41, no. 6 (2022): 1–13. http://dx.doi.org/10.1145/3550454.3555499.

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We present a spectral measurement approach for the bulk optical properties of translucent materials using only low-cost components. We focus on the translucent inks used in full-color 3D printing, and develop a technique with a high spectral resolution, which is important for accurate color reproduction. We enable this by developing a new acquisition technique for the three unknown material parameters, namely, the absorption and scattering coefficients, and its phase function anisotropy factor, that only requires three point measurements with a spectrometer. In essence, our technique is based

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Korchagin, Sergey, Ekaterina Pleshakova, Irina Alexandrova, et al. "Mathematical Modeling of Electrical Conductivity of Anisotropic Nanocomposite with Periodic Structure." Mathematics 9, no. 22 (2021): 2948. http://dx.doi.org/10.3390/math9222948.

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Composite materials consisting of a dielectric matrix with conductive inclusions are promising in the field of micro- and optoelectronics. The properties of a nanocomposite material are strongly influenced by the characteristics of the substances included in its composition, as well as the shape and size of inclusions and the orientation of particles in the matrix. The use of nanocomposite material has significantly expanded and covers various systems. The anisotropic form of inclusions is the main reason for the appearance of optical anisotropy. In this article, models and methods describing

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Lukash, A. A., and N. P. Lukutsova. "Technological Features of the Production of Embossed Plywood." Solid State Phenomena 284 (October 2018): 999–1004. http://dx.doi.org/10.4028/www.scientific.net/ssp.284.999.

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The article describes the technological features of the bonding of a new type of finishing materials made of glued laminated wood – relief plywood. The relevance of the topic and relevance of the questions is dictated by the need to involve more in processing underutilized at the present time of wood of soft deciduous species. Analytical review of publications of Russian and foreign authors showed that the most of the research has been focused on increasing the strength of structural materials and improvement in the appearance of finishing materials received considerably less attention. Theref

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Tsai, Chi-Yang, Jeng-Wen Lin, Yih-Ping Huang, and Yung-Chieh Huang. "Modeling and Assessment of Long Afterglow Decay Curves." Scientific World Journal 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/102524.

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Multiple exponential equations have been successfully fitted to experimental long afterglow decay curve data for some phosphor materials by previous researchers. The calculated decay constants in such equations are used to assess the phosphorescence characteristics of an object. This study generates decay constants from experimental test data and from existing literature for comparison. It shows that the decay constants of an object may not be invariant and that they are dependent on phosphor material, temperature, irradiation intensity, sample thickness, and phosphor density for samples. In a

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Velmre, Enn, Andres Udal, and Mihhail Klopov. "Modeling of Photon Recycling in GaN-Devices." Materials Science Forum 483-485 (May 2005): 1039–42. http://dx.doi.org/10.4028/www.scientific.net/msf.483-485.1039.

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The strength of recombination radiation reabsorption in GaN is discussed. For material comparisons a distance-dependent radiative recombination transfer function F(u) is introduced. In spite of high absorption rates of GaN, calculations predict ca. one order of magnitude higher photon recycling efficiency in GaN than in GaAs. Simulations of 2H-GaN p −i −n structures predict appearance of S-shaped forward I/V characteristics due to the generation of extra carriers in the base center. The study of GaN bipolar transistors shows that the radiative recombination will reduce the carrier lifetimes in

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Yi, Sheng-Xian, Zhong-Jiong Yang, and Huang-Xin Xie. "Hot Deformation and Constitutive Modeling of TC21 Titanium Alloy." Materials 15, no. 5 (2022): 1923. http://dx.doi.org/10.3390/ma15051923.

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Titanium alloys are extensively employed in the fabrication of various aviation structural parts, of which the most crucial processing step is hot working. In order to study the high-temperature deformation behavior of the TC21 titanium alloy, high-temperature tensile tests were performed. The results reveal that the flow stress of the material gradually decreases with an increased strain rate, and the stress increases rapidly with an increase in strain during the deformation of the alloy. Following this, flow stress gradually decreases. Flow stress decreases sharply, and the sample fractures

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Ismail, Nur Faiqa, Muhammmad Aiman Firdaus Bin Adnan, Solehuddin Shuib, and Nik Ahmad Hambali Nik Abd Rashid. "Three-Dimensional Modeling and Finite Element Analysis of an Ankle External Fixator." Applied Mechanics and Materials 899 (June 2020): 94–102. http://dx.doi.org/10.4028/www.scientific.net/amm.899.94.

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External fixator has played an important role in repairing fractured ankle bone. This surgery is done due to the several factors which are the bone is not normal position or has broken into several pieces. The external fixator will help the broken bone to grow and remodel back to the original appearance. However, there are some issues regarding to the stability of this fixation. Improper design and material are the major factor that decreased the stability since it is related to the deformation of the external fixator to hold the bone fracture area. This study aims to design a stable structure

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Frolova, Ksenia P., Elena N. Vilchevskaya, and Vladimir A. Polyanskiy. "Modeling of imperfect contacts in determining the effective diffusion permeability." Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy 10 (68), no. 4 (2023): 650–64. http://dx.doi.org/10.21638/spbu01.2023.405.

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The work develops a universal approach to acounting for imperfect contacts in determining the effective properties of various nature, namely, effective diffusivity, thermal and electrical conductivity. Imperfect contacts take place when fields at the microlevel are not continuous. The possibility of creating a unified approach is due to the similarity of the governing equations. At the same time, the appearance of imperfect contacts can be caused by microstructural features and by the specifics of the process itself. For concreteness, the effective diffusion permeability is determined, since v

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Macovei, Olivia. "The Ethics of Synthetic Biology - at the Confluence of Ecoethics and Technoethics." Postmodern Openings 13, no. 3 (2022): 234–50. http://dx.doi.org/10.18662/po/13.3/487.

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In the case of synthetic biology, the responsibility of humanity for the creation of new technologies that interfere with the processes of natural selection and evolution of species can be invoked, thus annihilating the complex ecological balances and possibly leading to uncontrollable genetic mutations. The big ethical questions are raised by the fact that viral genetic material is hybridized with synthetic genetic material, as well as with the genetic material that underlies the DNA of various living cells, that might interfere with synthetic genetic material - either due to errors in the ha

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PAPADATU, Carmen Penelopi, Dragos Bogdan OBREJA, Ionut Cristian ADAM-PAPADATU, and Ioan Gabriel SANDU. "Graphic Modeling and Equipment used in the Reconstruction of the Original Damascus Steel." International Journal of Conservation Science 15, no. 1 (2024): 979–92. http://dx.doi.org/10.36868/ijcs.2024.02.15.

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Damascus steel was used in the manufacture of swords and hunting knives before medieval times. The original method of the manufacturing of this type of steel has been lost to time. The research set out to create Damascus steel knives reconstituted according to the recipe from documents written many years ago. The study of Damascus steel provided an opportunity to observe in detail the laborious process of manufacturing this material, which involves free forging and pressure welding of different layers of steel to obtain a particularly strong and durable finished product. To carry out this rese

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Hossfeld, Max. "Modeling Friction Stir Welding: On Prediction and Numerical Tool Development." Metals 12, no. 9 (2022): 1432. http://dx.doi.org/10.3390/met12091432.

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This paper reports on a simulation framework capable of predicting the outcomes of the friction stir welding process. Numerical tool development becomes directly possible without the need for previous calibration to welding experiments. The predictive power of the framework is demonstrated by a case study for numerical tool development and validated experimentally. Different tool geometries with high levels of detail and active material flow features are investigated, and their effect on the process outcomes is quantified. The simulation framework is found to be able to predict forces, materia

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Shaikh, Dr (Mrs ). N. F., Dr (Mrs ). S. K. Wagh, and Devesh Sandeep Singh. "Advancing Photorealism Enhancement Using Convolutional Neural Networks (CNNs)." IOSR Journal of Computer Engineering 26, no. 5 (2024): 55–61. http://dx.doi.org/10.9790/0661-2605025561.

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Photorealism has been the defining goal of computer graphics for half a century. A look at even the most sophisticated real-time games will quickly reveal that photorealism has not been achieved. An ineffable difference in the appearance of simulation and reality remains. In recent years, a complementary set of techniques has been developed in computer vision and machine learning. These techniques, based on deep learning, convolutional networks, and adversarial training, bypass physical modeling of geometric layout, material appearance, and light transport. Instead, images are synthesized by c

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Busko, V., A. Cipric, and A. Stulhofer. "Social Networks and Pornography Use as Precursors Of Body Appearance Self-Perception and Satisfaction." Klinička psihologija 9, no. 1 (2016): 109. http://dx.doi.org/10.21465/2016-kp-op-0076.

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Objective: Following two complementary theoretical approaches to the study on the development of body appearance (dis)satisfaction, this paper examines the potential role of virtual social networks and exposure to pornography in the processes of body appearance perception and satisfaction. Design and Method: The study is done as a part of an ongoing longitudinal research project focused on the role of sexually explicit material in young people’s sexual socialization and health. The analyses to be presented are based on the data collected within the first time point of the project, on the sampl

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Elsayed, Hussein A., and Arafa H. Aly. "Terahertz frequency superconductor-nanocomposite photonic band gap." International Journal of Modern Physics B 32, no. 05 (2018): 1850056. http://dx.doi.org/10.1142/s021797921850056x.

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In the present work, we discuss the transmittance properties of one-dimensional (1D) superconductor nanocomposite photonic crystals (PCs) in THz frequency regions. Our modeling is essentially based on the two-fluid model, Maxwell–Garnett model and the characteristic matrix method. The numerical results investigate the appearance of the so-called cutoff frequency. We have obtained the significant effect of some parameters such as the volume fraction, the permittivity of the host material, the size of the nanoparticles and the permittivity of the superconductor material on the properties of the

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Andoh, Marc-Alain, Christophe Volat, and Gbah Koné. "A Simple Thermoelectrical Surface Approach for Numerically Studying Dry Band Formation on Polluted Insulators." Energies 18, no. 10 (2025): 2412. https://doi.org/10.3390/en18102412.

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This paper presents a simple thermoelectrical temporal surface method for numerically studying the appearance of a dry band on a polluted insulator. The proposed method combines an empirical expression of the pollution layer surface conductivity, expressed as a function of the temperature and equivalent salt deposit density (ESDD), and a surface approach for modeling the pollution layer, using thermoelectrical temporal simulations based on the finite element method (FEM). Using different material substrates, pollution layer thicknesses, and ESDD levels, the reliability and limitations of the s

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Kozlova, Galina, and Lyudmila Kozlova. "Compositional study of the lost temples in instructional design." проект байкал, no. 69 (November 13, 2021): 150–57. http://dx.doi.org/10.51461/projectbaikal.69.1867.

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The article presents the design and research work of the authors and first-year architecture students of Irkutsk National Research Technical University concerning compositional study of lost temples of Irkutsk with the reconstruction of their architectural appearance. The illustrative material was prepared using the students’ works. The complex of Siberian Baroque temples in Irkutsk in the mid-18th – late 19th centuries and various types of church buildings were studied. The work uses modeling as a tool for predicting the architectural appearance of the temple. Sketch drawings and models of th

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Payami, Golhin Ali, Are Strandlie, and Phil Green. "The Influence of Wedge Angle, Feedstock Color, and Infill Density on the Color Difference of FDM Objects." Journal of Imaging Science and Technology 65, no. 5 (2021): 50408–1. https://doi.org/10.2352/J.ImagingSci.Technol.2021.65.5.050408.

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The surface appearance in additive manufacturing (AM) has attracted attention in recent years due to its importance in evaluating the quality of 3D printed structures. Fused Deposition Modeling (FDM), also known as Fused Filament Fabrication (FFF), holds an important share of the AM market because of its large economic potential in many industries. Nevertheless, the quality assurance procedure for FDM manufactured parts is usually complicated and expensive. The enhancement of the appearance at different illumination and viewing angles can be exploited in various applications, such as civil eng

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Elek, Oskar, Denis Sumin, Ran Zhang, et al. "Scattering-aware Texture Reproduction for 3D Printing." ACM Transactions on Graphics (Proceedings of SIGGRAPH Asia) 36, no. 6 (2017): 241:1——241:15. https://doi.org/10.1145/3130800.3130890.

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Color texture reproduction in 3D printing commonly ignores volumetric light transport (cross-talk) between surface points on a 3D print. Such light diffusion leads to significant blur of details and color bleeding, and is particularly severe for highly translucent resin-based print materials. Given their widely varying scattering properties, this cross-talk between surface points strongly depends on the internal structure of the volume surrounding each surface point. Existing scattering-aware methods use simplified models for light diffusion, and often accept the visual blur as an immutable pr

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Zhu, Yue, Licheng Zhu, Wenbei Wang, et al. "Multiscale Modeling and Simulation of Falling Collision Damage Sensitivity of Kiwifruit." Foods 13, no. 21 (2024): 3523. http://dx.doi.org/10.3390/foods13213523.

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Falling damage is the most common form of damage sustained by kiwifruit during the process of picking and post-processing, and it is difficult to conduct a quantitative analysis of this phenomenon through traditional experimental methods. In order to deeply understand the sensitivity of kiwifruit to falling collision damage, the finite element numerical simulation method was used to evaluate and predict the sensitivity of kiwifruit to falling collision damage during harvesting. First, we obtained the appearance characteristics of kiwifruit through reverse engineering technology and determined

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Xu, P. F., S. Y. Duan, and F. Wang. "Reverse Modeling and Topological Optimization for Lightweight Design of Automobile Wheel Hubs with Hollow Ribs." International Journal of Computational Methods 17, no. 09 (2019): 1950064. http://dx.doi.org/10.1142/s0219876219500646.

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Lightweight of wheel hubs is the linchpin for reducing the unsprung mass and improving the vehicle dynamic and braking performance of vehicles, thus, sustaining stability and comfortability. Current experience-based lightweight designs of wheel hubs have been argued to render uneven distribution of materials. This work develops a novel method to combine the reverse modeling technique with the topological optimization method to derive lightweight wheel hubs based on the principles of mechanics. A reverse modeling technique is first adopted to scan and reproduce the prototype 3D geometry of the

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Kuzin, Mykola, Pavel Vovk, and Oleg Kuzin. "Mathematical modelling and mechanics approaches in investigation of structural failure causes." MATEC Web of Conferences 390 (2024): 04010. http://dx.doi.org/10.1051/matecconf/202439004010.

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An approach has been proposed for analyzing the causes of failure of parts, which is based on the use of mathematical modeling in calculating mechanical loads and strength parameters by finite-element analysis, followed by an assessment of the durability of the structure using methods of mechanics of damaged media that take into account the accumulation of structural defects in the material of products. The developed approach was used to calculate critical loads that led to the destruction of the crankshaft of a passenger car engine, and to establish the reasons for their appearance, and also

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Galashev, Alexander Y., Ksenia A. Abramova, Alexey S. Vorob'ev, Oksana R. Rakhmanova, and Yuri P. Zaikov. "Modeling the UO2 reduction process." Electrochemical Materials and Technologies 2, no. 3 (2023): 20232017. http://dx.doi.org/10.15826/elmattech.2023.2.017.

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Methods of molecular dynamics and DFT calculations have been used to study the reduction mechanisms of UO2 as the most representative part of spent nuclear fuel to metallic uranium. It is shown that the critical softening of the combined modulus of elasticity C11-C12 to zero is the reason for the destruction of the UO2 crystal as a result of the removal of oxygen from it. This destruction is accompanied by an order-disorder phase transition in the oxygen subsystem of the crystal under consideration. DFT calculations indicate a continuous decrease in the band gap as oxygen is removed from the U

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Santosa, Stefanus, Suwarto Suwarto, Suroso Suroso, Karnawan Joko Setiyono, Desi Setyaningsih, and Oze Dora Ilala. "VISUALISASI DAN UJI COBA METODE PERAWATAN LANTAI KERAMIK GUNA PEMBELAJARAN VIRTUAL." Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil 28, no. 1 (2023): 1–14. https://doi.org/10.32497/wahanats.v28i1.4557.

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The Architecture, Engineering, Construction, and Operations (AECO) industry has shown high interest in the use of Building Information Modeling (BIM) for Facility Maintenance Management (FMM). The opportunity to use BIM for the operational activities of building facilities is very large, but the use of BIM in FM is still far behind compared to the implementation of BIM at the design and construction stages. This research is intended to test the tile floor maintenance method and create visualizations in animative form and apply them in virtual learning with evaluation based on the Technology Ac

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Rezaeealam, Behrooz, and Behzad Norouzi. "Investigating Ferroresonance Phenomenon in a Single-Phase Transformer with the Effect of Magnetic Hysteresis." Indonesian Journal of Electrical Engineering and Computer Science 2, no. 2 (2016): 248. http://dx.doi.org/10.11591/ijeecs.v2.i2.pp248-258.

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<p>Ferroresonance is a non-linear phenomenon and very dynamic in the power quality problems. This phenomenon should be carefully analyzed so that preventive measures could be taken before its appearance and prevent injury and damage to electrical power appliances. Ferroresonance is seen more in the middle-voltage networks with supplying unloaded or slightly loaded transformers by cables. The materials used in the manufacture of transformer cores are creates a major role in their dynamic behavior. In this article are used from two types magnetic material GOES and NGOES in the transformer

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Asad, Hassan, Khan Ihsanullah, and Muhammad Javaid. "Applications and Prospects of 3D Printing in the Packaging Industry." International Journal of Advanced Engineering Research and Science 10, no. 1 (2023): 055–61. http://dx.doi.org/10.22161/ijaers.101.9.

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In this paper four 3D printing technologies fused deposition modeling (FDM), selective laser sintering (SLS), stereo lithography appearance (SLA), and laminated object manufacturing (LOM) were examined for their characteristics its applications. Technology for 3D printing Since the 1980s, when the field of applications first began to take off, rapid advancement has been made. Materials for 3D printing have been introduced. In order to build items with a variety of shape, size, rigidity, and color, it entails layering materials such as plastics, composites, or biomaterials. Another innovation w

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Chansatidkosol, Siraprapa, Chutima Limmatvapirat, Suchada Piriyaprasarth, Vipaluk Patomchaiviwat, and Sontaya Limmatvapirat. "Assessment of Shellac as Alternative Material for Preparation of Fused Deposition Modeling (FDM) 3D Printing Filaments." Key Engineering Materials 914 (March 21, 2022): 53–62. http://dx.doi.org/10.4028/p-fz3v68.

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The objective of this study was to assess feasibility of applying shellac as a biopolymer filament for using in fused deposition modeling (FDM) 3D printing. The shellac matrices were prepared through hot melt process by heating the ground shellac samples at 80°C in a silicone oil bath under continuous stirring for 15 min. Accelerated stability testing (annealing process) was also performed in order to evaluated thermal stability by re-heating shellac matrices at 80 °C for 12 h and 24 h in a hot air oven. The shellac matrices and annealed shellac matrices were then comparatively characterized.

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Dimonie, Doina, Nicoleta Dragomir, and Rusandica Stoica. "Attempts to Diminish the Drawbacks of Polylactic Acid Designed for 3D/4D Printing Technology-Fused Deposition Modeling." Materiale Plastice 58, no. 1 (2021): 142–53. http://dx.doi.org/10.37358/mp.21.1.5454.

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In order to improve thermal behavior and dimensional strability of polylactic acid (PLA) designed both for 3D and 4D printing technology-fused deposition modeling (FDM) using a scalable procedure, the polymer was melt compounded with additives which control the morphology by crystallization and/or reinforcing. Using the formulations which provide polylactic acid (PLA) improved thermo-mechanical properties and desired dimensional stability, the new materials were shaped, on a laboratory line, as filaments for printing technology. The selected compounds were than scaled up on a 50 kg/h compoundi

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Gigilashvili, Davit, Philipp Urban, Jean-Baptiste Thomas, Jon Yngve Hardeberg, and Marius Pedersen. "Impact of Shape on Apparent Translucency Differences." Color and Imaging Conference 2019, no. 1 (2019): 132–37. http://dx.doi.org/10.2352/issn.2169-2629.2019.27.25.

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Translucency is one of the major appearance attributes. Apparent translucency is impacted by various factors including object shape and geometry. Despite general proposals that object shape and geometry have a significant effect on apparent translucency, no quantification has been made so far. Quantifying and modeling the impact of geometry, as well as comprehensive understanding of the translucency perception process, are a point of not only academic, but also industrial interest with 3D printing as an example among many. We hypothesize that a presence of thin areas in the object facilitates

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Nagiev, Hasan A., and Firuza A. Alieva. "OPTIMAL CONTROL WITH LOAD OF DEVICES FOR HYDRO PURIFICATION OF FUELS TAKING INTO ACCOUNT CHANGE IN SULFUR CONTENT IN INCOMING ROW MATERIAL." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 60, no. 2 (2017): 91. http://dx.doi.org/10.6060/tcct.2017602.5457.

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The problem of controlling the speed of introduction of raw materials into processing in industrial plants for hydro desulphurization of fuels connected with considerable differences in their sulphur content is discussed. The main production- and logistic problems of appearance of dynamically changing deviations from a number of norms relating to sulphur content in raw materials being fed into cleansing reactor are presented. The problem of selecting such strategy of controlling the current capacity is stated which is optimal both from the points of view of quality indicator of raw material cl

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Bykov, Yurii A., and Liubov V. Kolodiazhna. "Effect of Blade Material of Steam Turbine Rotor on Aeroelastic Characteristics." Journal of Mechanical Engineering 27, no. 3 (2024): 6–15. http://dx.doi.org/10.15407/pmach2024.03.006.

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Elements of powerful steam turbines are subjected to significant unsteady loads, in particular the rotor blades of the last stages. These loads, in some cases, can cause self-excited oscillations, which are extremely dangerous and have a negative impact on the efficiency and service life of the blade cascade. Therefore, when designing new or modernizing existing steam turbine stages, it is recommended to study the aeroelastic characteristics of the blades. The conditions for the occurrence of self-excited oscillations are influenced by both the geometric characteristics and the alloy from whic

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Jia, Zian, Matheus C. Fernandes, Zhifei Deng, et al. "Microstructural design for mechanical–optical multifunctionality in the exoskeleton of the flower beetle Torynorrhina flammea." Proceedings of the National Academy of Sciences 118, no. 25 (2021): e2101017118. http://dx.doi.org/10.1073/pnas.2101017118.

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Biological systems have a remarkable capability of synthesizing multifunctional materials that are adapted for specific physiological and ecological needs. When exploring structure–function relationships related to multifunctionality in nature, it can be a challenging task to address performance synergies, trade-offs, and the relative importance of different functions in biological materials, which, in turn, can hinder our ability to successfully develop their synthetic bioinspired counterparts. Here, we investigate such relationships between the mechanical and optical properties in a multifun

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Daniela Kátlovská, Marko Bednárik, Lukáš Hanko, and Juraj Beniak. "FDM technology printing methods." World Journal of Advanced Engineering Technology and Sciences 7, no. 1 (2022): 038–43. http://dx.doi.org/10.30574/wjaets.2022.7.1.0085.

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3D printing technologies were developed almost 30 years ago and one of their main features is that instead of removing 3D printing adds material layer by layer and the elements are created directly from CAD models. This type of technology offers an advantageous ability to produce components that are complex in shape and material, which cannot by produce by the traditional methods. Intensive research has led to significant advances in technology in recent years in the development and commercialization of new innovative 3D printing processes by modeling molten deposition (FDM), including composi

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Osadchiev, Alexander, Roman Sedakov, Alexandra Gordey, and Alexandra Barymova. "Internal Waves as a Source of Concentric Rings within Small River Plumes." Remote Sensing 13, no. 21 (2021): 4275. http://dx.doi.org/10.3390/rs13214275.

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This study is focused on concentric rings, which are regularly observed by remote sensing of small river plumes located in different regions worldwide. We report new aerial observations of these features obtained by quadcopters and supported by synchronous in situ measurements, which were collected during the recent field survey at the Bzyb river plume in the eastern part of the Black Sea. Joint analysis of remote sensing imagery and in situ data suggest that the observed concentric rings are surface manifestations of high-frequency internal waves generated in the vicinity of the river mouth.

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Chernova, O. G., V. A. Zakharova, D. S. Kalugina, N. V. Chernousova, and A. V. Dedov. "Fuel permeability of thermoplastic polyurethanes after exposure to salt mist." Perspektivnye Materialy 11 (2022): 61–68. http://dx.doi.org/10.30791/1028-978x-2022-11-61-68.

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The effect of salt mist exposure on the surface structure and permeability of thermoplastic polyurethane used in the production of temporary storage tanks and transportation of diesel fuel was investigated. After exposure to salt mist, the analysis of microphotographs showed the alignment of the surface of the polymer material. IR spectroscopy revealed a change in the chemical composition of thermoplastic polyurethane, and the appearance of a quaternary ammonium salt, which leads to an increase in the polarity of polymer macromolecules and increases the relaxation rate of the polymer material

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Radzievskiy, R. M., and V. I. Plisko. "Law enforcers recognition level emerging threats based on physical appearance and behavior signs the enemy." Physical education of students 19, no. 1 (2015): 50–59. http://dx.doi.org/10.15561/20755279.2015.0108.

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Purpose: examine the effectiveness of the training method of differential approach to the choice of means of influence on the action of law enforcers opponent with different levels of aggressiveness. Material : the experiment involved 15 students of the Kyiv National Academy of Internal Affairs and the 15 employees of the State Guard of Ukraine. Results : presented curriculum for special physical and tactical training. The program details the conceptual apparatus of THREATS and DANGERS manifestations of different levels of aggressiveness opponent (case analysis of its motor behavior). The stud

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Ipatov, A. A., F. dell'Isola, I. Giorgio, I. Rahali, S. R. Eugster, and A. A. Zaikin. "DYNAMICS OF POROVISCOELASTIC PRISMATIC SOLID FOR VARIOUS VALUES OF MATERIAL PERMEABILITY." Problems of strenght and plasticity 81, no. 4 (2019): 416–28. http://dx.doi.org/10.32326/1814-9146-2019-81-4-416-428.

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In present paper wave propagation poroviscoelastic solids is studied. Study of wave propagation in saturated porous media is an important issue of engineering sciences. The poroelasticity theory was developed and nowadays is an important to engineering applications. Also research is dedicated to modeling of a slow compressional wave in poroviscoelastic media by means of boundary-element method. Poroviscoelastic formulation is based on Biot's model of fully saturated poroelastic media with a correspondence principal usage. Standard linear solid model is employed in order to describe viscoelasti

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Pavlov, Kirill Vital'evich. "A Source Complex for the Construction of a Scientifically Based Virtual Reconstruction of the Spaso-Preobrazhensky Cathedral of the Nizhny Novgorod Kremlin of the XIX - early XX Centuries." Историческая информатика, no. 4 (April 2022): 103–34. http://dx.doi.org/10.7256/2585-7797.2022.4.38473.

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The article is devoted to the problem of forming a source complex on the history of the Spaso-Preobrazhensky Cathedral of the Nizhny Novgorod Kremlin of the XIX - early XX centuries in order to create its scientifically based virtual reconstruction. As a result of many years of work, the author has collected a significant documentary base on the history of the temple, which includes four large groups of sources: written, pictorial (graphic), cartographic and material (museum exhibits). Each of them is analyzed in detail with the allocation of materials that are most important for the three-dim

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Svynarenko, Y., V. Korotkov, S. Kobzan, and O. Pomortseva. "MODEL OF RESTORATION OF MONUMENTS OF ARCHITECTURE AND URBAN PLANNING USING GEOINFORMATION TECHNOLOGIES." Municipal economy of cities 3, no. 170 (2022): 278–85. http://dx.doi.org/10.33042/2522-1809-2022-3-170-278-285.

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The article considers the current problem of preservation and development of the historical appearance of cities after the end of hostilities. Due to non-compliance with certain limits of modernization of building design (especially historical monuments), the city may lose its historic center, or its architectural ensemble may become unattractive to citizens and tourists. The aim of the article is to study the historical experience of rebuilding war-torn buildings and architectural ensembles and to develop an algorithm for the restoration of architectural and urban monuments with the necessary

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Yan, Gong Xing, and Xiao Rong Wang. "Three Dimensional Simulation and Repair of Skull Maxilla and Dentition Based on CT Scanning and Laser Sintering Technologies." Advanced Materials Research 538-541 (June 2012): 1857–61. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.1857.

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Obtain a prosthesis and carry out maxillofacial repair by rapid prototyping technology on the basis of three dimensional finite element model of maxilla skull and dentition which is obtained through preliminary restoration done on a skull exemplar as modeling material and through spiral CT scanning and three dimensional imaging technologies. Thus, a vivid restored three dimensional biomechanical model and prosthesis of maxilla skull and dentition is obtained, based on which, the form and functions can be restored well after repair. Individual defect model and prosthesis model can be built acco

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Wang, Xiao Rong, and Shi Wei Chen. "Three Dimensional Simulation and Repair of Skull Maxilla and Dentition Based on CT Scanning and Laser Sintering Technologies." Applied Mechanics and Materials 233 (November 2012): 416–19. http://dx.doi.org/10.4028/www.scientific.net/amm.233.416.

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Obtain a prosthesis and carry out maxillofacial repair by rapid prototyping technology on the basis of three dimensional finite element model of maxilla skull and dentition which is obtained through preliminary restoration done on a skull exemplar as modeling material and through spiral CT scanning and three dimensional imaging technologies. Thus, a vivid restored three dimensional biomechanical model and prosthesis of maxilla skull and dentition is obtained, based on which, the form and functions can be restored well after repair. Individual defect model and prosthesis model can be built acco

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