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Journal articles on the topic 'Thermo-Optical modeling'

Author: Grafiati

Published: 31 August 2024

Last updated: 31 July 2025

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1

Motygin, Vladimir, Natalja Iltchenko, Dmitry Polyshchuk, and Anna Veremienko. "New method for thermo-optical modeling in liquid crystals." Applied Optics 41, no. 23 (2002): 4870. http://dx.doi.org/10.1364/ao.41.004870.

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Kim, Kyoung Joon, Avram Bar-Cohen, and Bongtae Han. "Thermo-optical modeling of an intrinsically heated polymer fiber Bragg grating." Applied Optics 46, no. 20 (2007): 4357. http://dx.doi.org/10.1364/ao.46.004357.

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3

Askar, Sameh, Ahmed E. Abouelregal, Marin Marin, and Abdelaziz Foul. "Photo-Thermoelasticity Heat Transfer Modeling with Fractional Differential Actuators for Stimulated Nano-Semiconductor Media." Symmetry 15, no. 3 (2023): 656. http://dx.doi.org/10.3390/sym15030656.

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The term “optical thermoelasticity” is used to describe how the optical properties of a material change when it is heated or deformed mechanically. The issues of effective elastic and heat transfer symmetry are given particular focus. This study gives a new nonlocal theoretical formulation for a thermo-optical elastic material that can be used to describe how thermomechanical waves and plasma waves relate to the symmetry of semiconductor materials such as silicon or germanium. The suggested model includes the idea of nonlocal elasticity and a modified Moore–Gibson–Thompson (MGT) heat conductio

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Shneen, Salam Waley, Jafaar M. Daif Alkhasraji, and Mohammed Q. Sulttan. "Internet-based Control of Thermo-optical Plant Improvement based on the PID-GWO System." Journal of Fuzzy Systems and Control 2, no. 3 (2024): 197–202. https://doi.org/10.59247/jfsc.v2i3.257.

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Experimental work systems with remote access to the laboratory are an inseparable part of engineering education at universities. Many important factors contribute to enhancing overall performance in terms of stability, reliability, and robustness. These include time responses, time delays, inverse responses, signiﬁcant nonlinearities, multivariable interactions, and modeling uncertainties. This work examines four scenarios for the thermo-optical plant: open-loop PID, a close-loop system without control, a close-loop with PID controller, and a close-loop with a Proportional-Integral-Derivative

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Kim, Kyoung Joon, Avram Bar-Cohen, and Bongtae Han. "Thermo-optical modeling of polymer fiber Bragg grating illuminated by light emitting diode." International Journal of Heat and Mass Transfer 50, no. 25-26 (2007): 5241–48. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2007.06.038.

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Zanuto, Vitor S., Otávio A. Capeloto, Marcelo Sandrini, Luis C. Malacarne, Nelson G. C. Astrath, and Stephen E. Bialkowski. "Analysis of the Thermo-Reflectivity Coefficient Influence Using Photothermal Pump–Probe Techniques." Applied Spectroscopy 71, no. 5 (2016): 970–76. http://dx.doi.org/10.1177/0003702816662888.

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Recent improvements in the modeling of photo-induced thermo–optical–mechanical effects have broadened the application of photothermal techniques to a large class of solids and fluids. During laser excitation, changes in optical reflectivity due to temperature variation may affect the photothermal signal. In this study, the influence of the reflectivity change due to heating is analyzed for two pump–probe photothermal techniques, thermal lens and thermal mirror. A linear equation for the temperature dependence of the reflectivity is derived, and the solution is tested using optical properties o

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Boutelier, D., and O. Oncken. "3-D thermo-mechanical laboratory modeling of plate-tectonics: modeling scheme, technique and first experiments." Solid Earth 2, no. 1 (2011): 35–51. http://dx.doi.org/10.5194/se-2-35-2011.

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Abstract. We present an experimental apparatus for 3-D thermo-mechanical analogue modeling of plate tectonic processes such as oceanic and continental subductions, arc-continent or continental collisions. The model lithosphere, made of temperature-sensitive elasto-plastic analogue materials with strain softening, is submitted to a constant temperature gradient causing a strength reduction with depth in each layer. The surface temperature is imposed using infrared emitters, which allows maintaining an unobstructed view of the model surface and the use of a high resolution optical strain monitor

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Tseng, Ming-Lang, and Nima E. Gorji. "Metrology of silicon wafers under thermal and mechanical stress." Metallurgical Research & Technology 122, no. 4 (2025): 419. https://doi.org/10.1051/metal/2025045.

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In this study, we deploy a methodology to map the surface displacement (vertical displacement) in the Z direction that is often induced in silicon dies inside packaged chips. This metrology study will focus on the impact of thermal and mechanical (thermo-mechanical) stresses on the surface flatness of a single-chip ball grid array (BGA) chip. We developed a new formulation to map the surface displacement of the die in 3 dimensions for the chips that were stressed at different temperatures [30 °C, 50 °C, 100 °C, 150 °C] and for three different pressures applied to the package [10 MPa, 30 MPa, 6

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Sobotka, Evelyn, Johannes Kreyca, and Erwin Povoden-Karadeniz. "Intragranular ferrite nucleation on MX carbonitrides and dislocations." Journal of Physics: Conference Series 2635, no. 1 (2023): 012028. http://dx.doi.org/10.1088/1742-6596/2635/1/012028.

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Abstract The competing mechanisms of ferrite nucleation on (Ti,V)(C,N) MX carbonitrides and dislocations, as well as their dependence on deformation, are investigated experimentally by thermo-mechanical treatments and via simulation. The impact of recrystallization and the resulting austenite grain size on intragranular ferrite nucleation is evaluated. The austenite-to-ferrite transformation temperatures, affected by different microstructures, are examined by isothermal uniaxial single-hit compression tests on a dilatometer DIL 805 and compared to thermal treatments without deformation. Differ

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Louchev, Oleg A., Yoshiharu Urata, Masaki Yumoto, Norihito Saito та Satoshi Wada. "Thermo-optical modeling of high power operation of 2 μm codoped Tm,Ho solid-state lasers". Journal of Applied Physics 104, № 3 (2008): 033114. http://dx.doi.org/10.1063/1.2936967.

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11

Liu, Gang, Anh-Tuan Vu, Olaf Dambon, and Fritz Klocke. "Glass Material Modeling and its Molding Behavior." MRS Advances 2, no. 16 (2017): 875–85. http://dx.doi.org/10.1557/adv.2017.64.

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ABSTRACTPrecision molding is a replicative production method for the mass production of complex glass optics in high precision. In contrast to the traditional material removal process, such as grinding and polishing, the surface as well as the entire shape of the optical component is created by deforming glass at elevated temperatures using precise molding tools with optical surfaces. The molded glass components present high shape accuracy and surface finish after the molding process, therefore no further processing is required. During the molding process, the glass is heated in the molding to

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Zhang, Qinghua, Bohayra Mortazavi, and Fadi Aldakheel. "Molecular Dynamics Modeling of Mechanical Properties of Polymer Nanocomposites Reinforced by C7N6 Nanosheet." Surfaces 4, no. 3 (2021): 240–54. http://dx.doi.org/10.3390/surfaces4030019.

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Carbon-nitride nanosheets have attracted remarkable attention in recent years due to their outstanding physical properties. C7N6 is one of the hotspot nanosheets which possesses excellent mechanical, electrical, and optical properties. In this study, the coupled thermo-mechanical properties of the single nanosheet C7N6 are systematically investigated. Although temperature effects have a strong influence on the mechanical properties of C7N6 monolayer, thermal effects were not fully analyzed for carbon-nitride nanosheet and still an open topic. To this end, the presented contribution aims to hig

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Vita, Fabio, Benedetto Schiavo, Claudio Inguaggiato, et al. "Output of Volcanic SO2 Gases and Their Dispersion in the Atmosphere: The Case of Vulcano Island, Aeolian Archipelago, Italy." Atmosphere 16, no. 6 (2025): 651. https://doi.org/10.3390/atmos16060651.

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Gases emitted from active volcanic systems constitute a primary natural source of global atmospheric pollution. Atmospheric sulfur dioxide (SO2) concentrations were monitored using a near-continuous network based on Scan-DOAS (Differential Optical Absorption Spectroscopy) technology. Complementary intermittent measurements were performed using a UV Thermo® analyzer deployed at fixed locations and along predefined transects on the island. SO2 flux data derived from the Scan-DOAS measurements, coupled with atmospheric dispersion maps generated using the AERMOD modeling software, enabled the esti

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Marzougui, Ons, Naoufel Ben Moussa, and Farhat Ghanem. "Numerical modeling of phase transformations of Ti6Al4V during electrical discharge machining." Matériaux & Techniques 112, no. 3 (2024): 302. http://dx.doi.org/10.1051/mattech/2023047.

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Conventional machining of Ti6Al4V parts with complex shapes is often a tough task due to its low thermal conductivity and its high strength-to-density ratio. Thus, electrical discharge machining (EDM) comes as a better alternative that surpasses these manufacturing difficulties. In this work, a coupled thermo-mechanical model was built using the FEM software package Abaqus to estimate the sublayers final microstructure of a Ti6Al4V machined workpiece. The proposed numerical model aims to replicate a single-spark electrical discharge machining process. Phase transformations kinetic laws of the

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Yi, Duo. "Development of a flame spraying coating–based fiber composite structure: A thermo-mechanical finite element study." Journal of Intelligent Material Systems and Structures 31, no. 16 (2020): 1950–58. http://dx.doi.org/10.1177/1045389x20942324.

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The optical fiber smart composite structures have been widely applied for the structural health monitoring, and the packaging technique of integrating optical fiber sensor with host structure is one of the key issues. The flame spraying coating provides strong adhesive strength with good heat resistance, which is particularly suitable for the packaging applications in harsh environments. However, the elaboration process of flame spraying coating–based fiber composite structure faces great challenges due to the flame spraying mechanisms. This study evaluates numerically an overall effect of fla

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Kiran, Abhilash, Ying Li, Josef Hodek, Michal Brázda, Miroslav Urbánek, and Jan Džugan. "Heat Source Modeling and Residual Stress Analysis for Metal Directed Energy Deposition Additive Manufacturing." Materials 15, no. 7 (2022): 2545. http://dx.doi.org/10.3390/ma15072545.

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The advancement in additive manufacturing encourages the development of simplified tools for deep and swift research of the technology. Several approaches were developed to reduce the complexity of multi-track modeling for additive manufacturing. In the present work, a simple heat source model called concentrated heat source was evaluated for single- and multi-track deposition for directed energy deposition. The concentrated heat source model was compared with the widely accepted Goldak heat source model. The concentrated heat source does not require melt pool dimension measurement for thermal

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17

Razenkov, I. A. "Engineering and Technical Solutions When Designing a Turbulent Lidar." Atmospheric and Oceanic Optics 35, S1 (2022): S148—S158. http://dx.doi.org/10.1134/s1024856023010141.

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Abstract Design characteristics of a turbulent lidar, which affect its thermo-mechanical stability, are determined. Two different designs are compared with different approaches to the selection of transceiving optics and detectors and arrangement of the temperature control system for stabilizing the lidar optical bench. A procedure is suggested for simulation of the lidar transceiver, including the calculation of the displacements of optical elements relative to the base points on the optical bench and the ray tracing from the laser into the atmosphere and back. The effect of the temperature g

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18

Berger, Evan, Michael Miles, Andrew Curtis, Paul Blackhurst, and Yuri Hovanski. "2D Axisymmetric Modeling of Refill Friction Stir Spot Welding and Experimental Validation." Journal of Manufacturing and Materials Processing 6, no. 4 (2022): 89. http://dx.doi.org/10.3390/jmmp6040089.

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The development of the simulation of refill friction stir spot welding (RFSSW) is critical to be able to predict the behavior of aluminum in the process under specific parameters. A two-dimensional axisymmetric thermo-mechanical model of the RFSSW process for 7075-T6 aluminum alloy sheet was developed and validated with experimental data. Welding temperatures and material flow, including defect formation, were accurately predicted by the model. While these results are encouraging, further development of bonding criteria is needed for simulation models, in order to enable the prediction of prop

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19

Gorajek, Lukasz, Przemyslaw Gontar, Jan Jabczynski, et al. "Characterization of Absorption Losses and Transient Thermo-Optic Effects in a High-Power Laser System." Photonics 7, no. 4 (2020): 94. http://dx.doi.org/10.3390/photonics7040094.

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(1) Background: The modeling, characterization, and mitigation of transient lasers, thermal stress, and thermo-optic effects (TOEs) occurring inside high energy lasers have become hot research topics in laser physics over the past few decades. The physical sources of TOEs are the un-avoidable residual absorption and scattering in the volume and on the surface of passive and active laser elements. Therefore, it is necessary to characterize and mitigate these effects in real laser systems under high-power operations. (2) Methods: The laboratory setup comprised a 10-kW continuous wave laser sourc

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Paar, Armin, Leonel Elizondo, Michael Brandner, et al. "Application of Thermo-Calc TCFE7 to High-Alloyed Mottled Cast Iron." Materials Science Forum 879 (November 2016): 1431–36. http://dx.doi.org/10.4028/www.scientific.net/msf.879.1431.

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The thermodynamic modeling of alloy systems consisting of stable and metastable phases e.g. high-alloyed mottled cast iron can be problematic. Thermodynamic databases are rather well-developed for low, medium and high alloyed steels (e.g. HSS) but the application of those databases is not yet very common for high-alloyed (mottled) cast irons. The Thermo-Calc software together with the TCFE7 database is used to calculate isopleth and property diagrams, using the CALPHAD method. Additionally Scheil-Gulliver calculations are performed to simulate the effects of microsegregation during solidificat

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Costa, D. C. T., M. C. Cardoso, Gláucio S. da Fonseca, Luciano Pessanha Moreira, M. Martiny, and S. Mercier. "Strain-Induced Martensite Formation of AISI 304L Steel Sheet: Experiments and Modeling." Materials Science Forum 869 (August 2016): 490–96. http://dx.doi.org/10.4028/www.scientific.net/msf.869.490.

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Metastable austenitic stainless steels are prone to strain-induced martensite transformation (SIMT) during deformation at room temperature, as in the case of sheet metal forming processes. The SIMT is influenced by the chemical composition, grain size, temperature, deformation mode or stress state and strain-rate. In this work, interrupted and continuous uniaxial tensile tests were performed in AISI 304L sheet to evaluate the SIMT as a function of strain and strain-rate effects. The SIMT was evaluated by feritscope and temperature in-situ measurements and both XRD and optical microscopy techni

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Sivan, Yonatan, and Shi-Wei Chu. "Nonlinear plasmonics at high temperatures." Nanophotonics 6, no. 1 (2017): 317–28. http://dx.doi.org/10.1515/nanoph-2016-0113.

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AbstractWe solve the Maxwell and heat equations self-consistently for metal nanoparticles under intense continuous wave (CW) illumination. Unlike previous studies, we rely on experimentally-measured data for metal permittivity for increasing temperature and for the visible spectral range. We show that the thermal nonlinearity of the metal can lead to substantial deviations from the predictions of the linear model for the temperature and field distribution and, thus, can explain qualitatively the strong nonlinear scattering from such configurations observed experimentally. We also show that the

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23

Seo, Sang-Woo, Youngsik Song, and Hojjat Rostami Azmand. "Photothermal liquid release from arrayed Au nanorod/hydrogel composites for chemical stimulation." Journal of Micromechanics and Microengineering 32, no. 1 (2021): 015003. http://dx.doi.org/10.1088/1361-6439/ac39fa.

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Abstract Controlled photothermal actuation of liquid release is presented using periodically arrayed hydrogel columns in a macroporous silicon membrane. Thermo-responsive hydrogel is mixed with Gold (Au) nanorods, and surface plasmon-induced local heating by near-infrared (NIR) light is utilized as an actuation method. We adopted theoretical modeling, which treats the hydrogel as a poro-viscoelastic medium to understand the mechanical and liquid transport properties of the hydrogel. To demonstrate the feasibility of the liquid release control using NIR light, we first characterized the tempera

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Trzepieciński, Tomasz, Marcin Szpunar, Robert Ostrowski, Waldemar Ziaja, and Maciej Motyka. "Advanced FEM Insights into Pressure-Assisted Warm Single-Point Incremental Forming of Ti-6Al-4V Titanium Alloy Sheet Metal." Metals 14, no. 6 (2024): 619. http://dx.doi.org/10.3390/met14060619.

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This study employs the finite element (FE) method to analyze the Incremental Sheet Forming (ISF) process of Ti-6Al-4V titanium alloy. The numerical modeling of pressure-assisted warm forming of Ti-6Al-4V sheets with combined oil-heating and friction stir rotation-assisted heating of the workpiece is presented in this article. The thermo-mechanical FE-based numerical model took into account the characteristics of the mechanical properties of the sheet along with the temperature. The experimental conditions were replicated in FEM simulations conducted in Abaqus/Explicit, which incorporated bound

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Salomone, Rita, Vito Speranza, Sara Liparoti, Giuseppe Titomanlio, and Roberto Pantani. "Modeling and Analysis of Morphology of Injection Molding Polypropylene Parts Induced by In-Mold Annealing." Polymers 14, no. 23 (2022): 5245. http://dx.doi.org/10.3390/polym14235245.

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It is generally recognized that high-temperature treatments, namely annealing, influence the microstructure and the morphology, which, in turn, determine the mechanical properties of polymeric parts. Therefore, annealing can be adopted to control the mechanical performance of the molded parts. This work aims to assess the effect of annealing on the morphology developed in isotactic polypropylene (iPP) injection-molded parts. In particular, a two-step annealing is adopted: the polymer is injected in a mold at a high temperature (413 or 433 K), which is kept for 5 min (first annealing step); aft

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Kostyukhin, A. S., E. A. Pavlukhin, and V. V. Malyy. "Development and experimental testing of the technique of ultrasonic control of brazed joints of heat exchangers." Journal of Physics: Conference Series 2127, no. 1 (2021): 012054. http://dx.doi.org/10.1088/1742-6596/2127/1/012054.

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Abstract High reliability requirements are imposed on the quality of the soldered joints. Typical defects in the soldered joints of heat exchangers are non-soldered. The minimum size of the non-penetration area that must be detected is about 1 square millimeter. The existing assessment of the quality of soldering is reduced to destructive tests. These tests include hydraulic and pneumatic tests. There are control technologies that use non-destructive methods. For example, the applicability of the ultrasonic echo method based on thermo-optical (laser) excitation of ultrasonic waves has been pro

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Vattathurvalappil, Suhail Hyder, Mahmoodul Haq, and Saratchandra Kundurthi. "Hybrid nanocomposites—An efficient representative volume element formulation with interface properties." Polymers and Polymer Composites 30 (January 2022): 096739112210846. http://dx.doi.org/10.1177/09673911221084651.

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Reinforcement of polymers with multiple inclusions of varying length scales and morphologies enable enhancement and tailorability of thermo-mechanical properties in resulting polymers. Computational material models can eliminate the trial-and-error approach of developing these hybrid reinforced polymers, enable prediction of interphase properties, and allow virtual exploration of design space. In this work, computational models, specifically representative volume elements were developed for acrylonitrile butadiene styrene polymer reinforced with nanoscale iron oxide particles and micro-scale s

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Nicolay, Pascal, Hugo Chambon, Gudrun Bruckner, et al. "A LN/Si-Based SAW Pressure Sensor." Sensors 18, no. 10 (2018): 3482. http://dx.doi.org/10.3390/s18103482.

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Surface Acoustic Wave (SAW) sensors are small, passive and wireless devices. We present here the latest results obtained in a project aimed at developing a SAW-based implantable pressure sensor, equipped with a well-defined, 30 μm-thick, 4.7 mm-in-diameter, Lithium Niobate (LN) membrane. A novel fabrication process was used to solve the issue of accurate membrane etching in LN. LN/Si wafers were fabricated first, using wafer-bonding techniques. Grinding/polishing operations followed, to reduce the LN thickness to 30 μm. 2.45 GHz SAW Reflective Delay-Lines (R-DL) were then deposited on LN, usin

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Buyak, N., V. Deshko, I. Bilous, M. Gureev, and O. Holubenko. "EN Assessment of the window replacement influence on building energy consumption and human thermal comfort on the basis of dynamic modeling." Refrigeration Engineering and Technology 55, no. 5-6 (2020): 282–92. http://dx.doi.org/10.15673/ret.v55i5-6.1656.

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The dynamic modeling of the energy characteristics of building structures with the help of energy-saving double-glazed windows was carried out in the work. The influence of different variants of windows replacement on the heat energy state of a typical mass building for various glazing coefficients in dynamic grid models created on the basis of the Energy Plus software product was analyzed. It is found that argon-filled glass, selective-coated glass on the outer and inner glass can reduce the energy requirement for the building by 8-10% compared to the double-glazed glass without selectively c

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Yaqoob, M. Z., Ahtisham Ali, Majeed A. S. Alkanhal, A. Ghaffar, Y. Khan, and M. Umair. "Temperature-Dependent Electromagnetic Surface Wave Supported by Graphene-Loaded Indium Antimonide Planar Structure." International Journal of Optics 2024 (January 5, 2024): 1–10. http://dx.doi.org/10.1155/2024/9607121.

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In this study, the propagation characteristics of EM surface waves supported by the graphene-coated indium antimonide (InSb) planar waveguide have been investigated theoretically and numerically. The modeling of graphene has been performed by use of Kubo formalism whereas the relative permittivity of indium antimonide has been calculated using Drude’s model. The results for transverse electric (TE) and transverse magnetic (TM) polarized surface waves have been computed analytically and numerically. The major challenge is to model the atomically thick graphene sheet over the InSb grounded slab.

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Sala, Filip. "Beam splitting in chiral nematic liquid crystals." Photonics Letters of Poland 10, no. 4 (2018): 109. http://dx.doi.org/10.4302/plp.v10i4.867.

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By lunching the beam into the chiral nematic liquid crystals it is possible to achieve a non-diffractive beam similar to a soliton. This effect is caused by the molecular reorientation i.e. nonlinear response of the material forming the areas of higher refractive index. Diffraction is suppressed by the focusing effect. For appropriate launching conditions it is also possible to achieve a beam which splits into two or more separate beams. Such phenomenon is discussed in this article and analyzed theoretical. To model this effect Fully Vectorial Beam Propagation Method coupled with the Frank-Ose

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Sanchis, E., L. Testi, A. Natta, et al. "Measuring the ratio of the gas and dust emission radii of protoplanetary disks in the Lupus star-forming region." Astronomy & Astrophysics 649 (April 28, 2021): A19. http://dx.doi.org/10.1051/0004-6361/202039733.

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We performed a comprehensive demographic study of the CO extent relative to dust of the disk population in the Lupus clouds in order to find indications of dust evolution and possible correlations with other disk properties. We increased the number of disks of the region with measured RCO and Rdust from observations with the Atacama Large Millimeter/submillimeter Array to 42, based on the gas emission in the 12CO J = 2−1 rotational transition and large dust grains emission at ~0.89 mm. The CO integrated emission map is modeled with an elliptical Gaussian or Nuker function, depending on the qua

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Krokhalev, A. V., V. O. Kharlamov, S. V. Kuzmin, and V. I. Lysak. "FUNDAMENTALS OF WEAR-RESISTANT COATING PRODUCTION FROM CHROMIUM CARBIDE POWDER MIXTURE WITH BINDER METAL BY EXPLOSIVE COMPACTION." Izvestiya Vuzov Tsvetnaya Metallurgiya (Proceedings of Higher Schools Nonferrous Metallurgy, no. 3 (June 14, 2018): 68–83. http://dx.doi.org/10.17073/0021-3438-2018-3-68-83.

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The article presents experimental data on explosive compaction of chromium carbide (Cr3C2) powder mixtures with metals (Ti, Ni, Cu) provided with theoretical explanations. These data were used as a basis for stating science-based principles of composition selection and technology development to produce antifriction wear-resistant chromium carbide hard alloys and coatings by explosion. Explosive compaction of powder mixtures was carried out according to a scheme using a normally incident plane detonation wave in a wide range of loading parameters (powder heating temperature in shock waves varie

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Stober, Jörg, Martin Schubert, Mireille Schneider, et al. "Quantification of X3 absorption for ITER L-mode parameters in ASDEX Upgrade." EPJ Web of Conferences 277 (2023): 02007. http://dx.doi.org/10.1051/epjconf/202327702007.

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For an early H-mode access in hydrogen, ITER considers operating at 1/3 of the full field using 170 GHz X-Mode for heating at the 3rd harmonic. The optical thickness for such a heating scheme depends on Te2. It is rather low in the ohmic phase (with Te about 1-2 keV), but reaches high single pass absorption for the strongly EC heated plasma with Te exceeding 10 keV. Launching ECRH into an ohmic plasma may trigger a boot-strap process on Te if the additional power absorption due to increasing Te exceeds the additional power losses due to increased transport (which often tends to increase with i

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Myhre, G., and A. Grini. "Modelling of nitrate particles: importance of sea salt." Atmospheric Chemistry and Physics Discussions 6, no. 1 (2006): 1455–80. http://dx.doi.org/10.5194/acpd-6-1455-2006.

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Abstract. A thermo dynamical model for treatment of gas/aerosol partitioning of semi volatile inorganic aerosols has been implemented in a global chemistry and aerosol transport model (Oslo CTM2). The sulphur cycle and sea salt particles have been implemented earlier in the Oslo CTM2 and the focus of this study is on whether nitrate particles are formed as fine mode ammonium nitrate or react on existing sea salt particles. The model results show that ammonium nitrate particles play a non-negligible role in the total aerosol composition in certain industrialized regions and therefore have a sig

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Heim, Dariusz, Dominika Knera, and Anna Machniewicz. "Modelling of Thermo-optical Properties of Amorphous and Microcrystalline Silicon Semitransparent PV Layer." Energy Procedia 78 (November 2015): 430–34. http://dx.doi.org/10.1016/j.egypro.2015.11.688.

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Aussavy, Delphine, Rodolphe Bolot, François Peyraut, Ghislain Montavon, and Serge Selezneff. "Thermomechanical Properties of CoNiCrAlY-BN-Polyester Composite Coatings Elaborated by Atmospheric Plasma Spraying." Key Engineering Materials 606 (March 2014): 167–70. http://dx.doi.org/10.4028/www.scientific.net/kem.606.167.

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This study concerns the mechanical properties of CoNiCrAlY-BN-Polyester composite coatings elaborated by Atmospheric Plasma Spray (APS) and used as abradable seals in the aeronautic industry. The objective is to determine the influence of the diameter of the plasma torch on the coating micrograph morphologies and on the resulting coating thermal and mechanical effective properties. The thermo-mechanical effective properties were then estimated by Finite Element modelling (thanks to the multipurpose finite element software ANSYS) based on coating microstructures captured by Scanning Electron Mi

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Kim, Hansung, Da Xu, Ciby John, and Yaqiong Wu. "Modeling Thermo-Mechanical Stress of Flexible CIGS Solar Cells." IEEE Journal of Photovoltaics 9, no. 2 (2019): 499–505. http://dx.doi.org/10.1109/jphotov.2019.2892531.

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van Driel, W. D., G. Q. Zhang, J. H. J. Janssen, and L. J. Ernst. "Response Surface Modeling for Nonlinear Packaging Stresses." Journal of Electronic Packaging 125, no. 4 (2003): 490–97. http://dx.doi.org/10.1115/1.1604149.

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The present study focuses on the development of reliable response surface models (RSM’s) for the major packaging processes of a typical electronic package. The major objective is to optimize the product/process designs against the possible failure mode of vertical die cracks. First, the finite element mode (FEM)-based physics of failure models are developed and the reliability of the predicted stress levels was verified by experiments. In the development of reliable thermo-mechanical simulation models, both the process (time and temperature) dependent material nonlinearity and geometric nonlin

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Carmona, M., S. Marco, J. Samitier, M. C. Acero, J. A. Plaza, and J. Esteve. "Modeling the Thermal Actuation in a Thermo-Pneumatic Micropump." Journal of Electronic Packaging 125, no. 4 (2003): 527–30. http://dx.doi.org/10.1115/1.1604154.

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The analysis of a thermo-pneumatic actuation unit for its use in a micropump has been carried out. Coupled thermo-mechanical simulations by finite element method (FEM) (with ANSYS software) were required because of the complexity of the device. The simulation results were validated by thermal and mechanical experimental results, showing a good agreement. FEM results have been used to extract a high level model of the actuation unit that can be used to estimate the maximum performance of the micropump operation with this actuation unit. In order to identify the best frequency of operation for t

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Trajin, Baptiste, and Paul-Etienne Vidal. "Bond graph multi-physics modeling of encapsulating materials in power electronic modules." European Physical Journal Applied Physics 89, no. 2 (2020): 20902. http://dx.doi.org/10.1051/epjap/2020180287.

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This paper focuses on multi-physics modeling of encapsulating gels in power electronic modules for transient and steady-state simulation. With the emergence of wide-bandgap semiconductors such as SiC or GaN, operating at a higher temperature than conventional Si power chips, this passive element of the packaging appears as a few studied element sensitive to thermal and mechanical stresses. A thermo-mechanical coupled modeling of the material, based on bond graph representation, is presented. This approach allows to establish, under the same formalism, an analogy between the different physical

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Górecki, Krzysztof, and Przemysław Ptak. "Compact Modelling of Electrical, Optical and Thermal Properties of Multi-Colour Power LEDs Operating on a Common PCB." Energies 14, no. 5 (2021): 1286. http://dx.doi.org/10.3390/en14051286.

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This paper concerns the problem of modelling electrical, thermal and optical properties of multi-colour power light-emitting diodes (LEDs) situated on a common PCB (Printed Circuit Board). A new form of electro-thermo-optical model of such power LEDs is proposed in the form of a subcircuit for SPICE (Simulation Program with Integrated Circuits Emphasis). With the use of this model, the currents and voltages of the considered devices, their junction temperature and selected radiometric parameters can be calculated, taking into account self-heating phenomena in each LED and mutual thermal coupli

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Jiang, Jianliang, Ulrich Hilleringmann, and Xiaoping Shui. "Electro-thermo-mechanical analytical modeling of multilayer cantilever microactuator." Sensors and Actuators A: Physical 137, no. 2 (2007): 302–7. http://dx.doi.org/10.1016/j.sna.2007.03.012.

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Papingiotis, Theodoros, Dimitrios N. Korres, Irene Koronaki, and Christos Tzivanidis. "Energetical and Exergetical Analyses of a Concentrating PV/T Collector: A Numerical Approach." Applied Sciences 13, no. 19 (2023): 10669. http://dx.doi.org/10.3390/app131910669.

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The specific work presents an optical and thermal investigation of a hybrid thermo-photovoltaic solar collector with an asymmetrical compound parabolic mirror. Such collectors offer an innovative and sustainable approach to address both the thermal and electrical demands of residents on islands using renewable sources of energy and thus reducing the dependency on fossil fuels. The main goal of this investigation involves an analysis of the prementioned type of solar collector, incorporating an innovative and cost-effective numerical modelling technique aiming to enhance comprehension of its en

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Shen, Y. L. "Thermo-mechanical stresses in copper interconnects – A modeling analysis." Microelectronic Engineering 83, no. 3 (2006): 446–59. http://dx.doi.org/10.1016/j.mee.2005.11.009.

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Venkatachalam, A., W. T. James, and S. Graham. "Electro-thermo-mechanical modeling of GaN-based HFETs and MOSHFETs." Semiconductor Science and Technology 26, no. 8 (2011): 085027. http://dx.doi.org/10.1088/0268-1242/26/8/085027.

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Boutelier, D., and O. Oncken. "3-D thermo-mechanical laboratory modelling of plate-tectonics." Solid Earth Discussions 3, no. 1 (2011): 105–47. http://dx.doi.org/10.5194/sed-3-105-2011.

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Abstract. We present an experimental apparatus for 3-D thermo-mechanical analogue modelling of plate-tectonics processes such as oceanic and continental subductions, arc-continent or continental collisions. The model lithosphere, made of temperature-sensitive elasto-plastic with softening analogue materials, is submitted to a constant temperature gradient producing a strength reduction with depth in each layer. The surface temperature is imposed using infrared emitters, which allows maintaining an unobstructed view of the model surface and the use of a high resolution optical strain monitoring

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Luzi, Giovanni, Seunghyeon Lee, Bernhard Gatternig, and Antonio Delgado. "An Asymptotic Energy Equation for Modelling Thermo Fluid Dynamics in the Optical Fibre Drawing Process." Energies 15, no. 21 (2022): 7922. http://dx.doi.org/10.3390/en15217922.

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Microstructured optical fibres (MOFs) are fibres that contain an array of air holes that runs through the whole fibre length. The hole pattern of these fibres can be customized to manufacture optical devices for different applications ranging from high-power energy transmission equipment to telecommunications and optical sensors. During the drawing process, the size of the preform is greatly scaled down and the original hole pattern result might be modified, potentially leading to unwanted optical effects. Because only a few parameters can be controlled during the fabrication process, mathemat

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Woliński, Tomasz, Sławomir Ertman, Katarzyna Rutkowska, et al. "Photonic Liquid Crystal Fibers – 15 years of research activities at Warsaw University of Technology." Photonics Letters of Poland 11, no. 2 (2019): 22. http://dx.doi.org/10.4302/plp.v11i2.907.

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Research activities in the area of photonic liquid crystal fibers carried out over the last 15 years at Warsaw University of Technology (WUT) have been reviewed and current research directions that include metallic nanoparticles doping to enhance electro-optical properties of the photonic liquid crystal fibers are presented. Full Text: PDF ReferencesT.R. Woliński et al., "Propagation effects in a photonic crystal fiber filled with a low-birefringence liquid crystal", Proc. SPIE, 5518, 232-237 (2004). CrossRef F. Du, Y-Q. Lu, S.-T. Wu, "Electrically tunable liquid-crystal photonic crystal fiber

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Ramdane, Brahim, Didier Trichet, Mohamed Belkadi, and Javad Fouladgar. "3-D Numerical Modeling of the Thermo-Inductive Technique Using Shell Elements." IEEE Transactions on Magnetics 46, no. 8 (2010): 3037–40. http://dx.doi.org/10.1109/tmag.2010.2044022.

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