Bibliografías temáticas / Thermal and optical stress

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Literatura académica sobre el tema "Thermal and optical stress"

Autor: Grafiati

Publicado: 25 de mayo de 2024

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Artículos de revistas sobre el tema "Thermal and optical stress"

Shiue, Sham-Tsong y Wen-Hao Lee. "Thermal stresses in carbon-coated optical fibers at low temperature". Journal of Materials Research 12, n.º 9 (septiembre de 1997): 2493–98. http://dx.doi.org/10.1557/jmr.1997.0329.

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The thermal stresses in carbon-coated optical fibers at low temperature have been analyzed. The thermally induced lateral pressure in the glass fiber would produce microbending loss. In order to minimize such a microbending loss, the thickness, Young's modulus, and Poisson's ratio of the carbon coating should be decreased. On the other hand, the maximum thermal stress is the tangential stress in the carbon coating that occurs at the interface of the carbon coating and glass fiber. It was experimentally observed that if the maximum thermal stress is larger than the tensile strength of the carbon coating, the carbon coating will be broken along the axial direction. In order to minimize such a maximum thermal stress, the thickness of the carbon coating should be increased, but Young's modulus, thermal expansion coefficient, and Poisson's ratio of the carbon coating should be decreased. Finally, an optimal selection of the carbon coating for optical fiber is discussed.

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HIGUCHI, Masaya y Koji SHIMIZU. "Evaluation of thermal stress by optical interferometric method". Proceedings of Autumn Conference of Tohoku Branch 2004.40 (2004): 49–50. http://dx.doi.org/10.1299/jsmetohoku.2004.40.49.

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Evans, K. E. "Thermal stress mechanisms in optical storage thin films". Journal of Applied Physics 63, n.º 10 (15 de mayo de 1988): 4946–50. http://dx.doi.org/10.1063/1.340438.

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Huang, Cai Hua, Xiao Hua Sun, Yi Hua Sun y Jun Zou. "Thermal Effects Caused by Inclusions in Optical Films Irradiated by CW Laser". Advanced Materials Research 634-638 (enero de 2013): 2609–12. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.2609.

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A steady thermal conduction model was presented to study the temperature field and thermal stress distribution in film irradiated by continuous wave laser. The thermal effects may arise from either the absorbing inclusions or the intrinsic absorption of film. Based on the plane thermal conduction assumption, the characteristics of damage resulted from local melting or evaporation and thermal stress were discussed. The damage region resulted from local melting or evaporation smaller than that from thermal stress. The circumferential stress σθis the main cause accounting for the stress damage. The normal stress perpendicular to the interface between film and substrate is the direct cause of drum type damage. The characteristics of damage in unsteady thermal conduction caused by pulse laser can be analyzed qualitatively by means of this model.

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Hu, Fu Kai, De Jian Zhou y Lei Cheng. "Research and Design of Optical-Fiber-Embedded Structure in Optical Printed Circuit Board under Thermal Shock". Advanced Materials Research 763 (septiembre de 2013): 238–41. http://dx.doi.org/10.4028/www.scientific.net/amr.763.238.

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To improve the serviceability of embedded optical fiber in OPCB, the paper discussed the optical-fiber-embedded structure in OPCB from the aspects of stress. Firstly, discussed optical fiber, groove and whether to use filler and provided six kinds of embedded structures. Then, finite element models were built for thermal simulation and thermal stress in fiber was calculated. Finally, compared different embedded structures from the stress in fiber and gave some suggestion about the design of embedded structure. The study proved that glass fiber is a better selection for OPCB; the stress concentrate easily appears in the edge of glass fiber; using filler can protect uncoated glass fiber, but increase the thermal stress is in coated glass fiber; when embedding uncoated fiber, U-groove is a better choice; when embedding coated fiber, U-groove without filler is the best choice. The results are helpful to the application of glass fiber in OPCB.

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Liu, Yueai, B. M. A. Rahman y K. T. V. Grattan. "Thermal-stress-induced birefringence in bow-tie optical fibers". Applied Optics 33, n.º 24 (20 de agosto de 1994): 5611. http://dx.doi.org/10.1364/ao.33.005611.

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Wong, D. "Thermal stability of intrinsic stress birefringence in optical fibers". Journal of Lightwave Technology 8, n.º 11 (1990): 1757–61. http://dx.doi.org/10.1109/50.60576.

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Gao, You Tang, Shuo Liu y Yuan Xu. "Analysis of Thermal Shock and Stress with Infrared Optical Domes". Applied Mechanics and Materials 325-326 (junio de 2013): 332–35. http://dx.doi.org/10.4028/www.scientific.net/amm.325-326.332.

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The development of infrared optical materials is always closely related to the research and exploration of material science. The infrared optical domes bears shock and produces stress when the infrared optical domes mounted on the missile moving at a high speed is shocked by high temperature. According to aerodynamics theory and thermo shock theory, the surge current will be transferred to optical parts through holding up layer and warms the surface of optical parts when infrared optical parts are shocked by high temperature. A compress stress is formed on the hot external surface of optical parts forms and a tension stress is formed on the internal surface or optical parts under the circumstance of the edge of optical parts being fixed. The windows of optical parts become curvature radius of lens with the function of pressure difference which can cause aberration change. The brittle fracture of material will be caused if peak stress is beyond the strength which is permitted for infrared materials. Therefore, limits to design of windows thickness is proposed in this paper.

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Lee, Kyoungho y Joong Seok Lee. "Optimal Design of the Flexure Mount for Optical Mirror Using Topology Optimization Considering Thermal Stress Constraint". Journal of the Korea Institute of Military Science and Technology 25, n.º 6 (5 de diciembre de 2022): 561–71. http://dx.doi.org/10.9766/kimst.2022.25.6.561.

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An optical mirror assembly is an opto-mechanically coupled system as the optical and mechanical behaviors interact. In the assembly, a flexure mount attached to an optical mirror should be flexible in the radial direction, but rigid for the remaining degrees of freedom for supporting the mirror rigidly and suppressing the wavefront error of the optical mirror. This work presents an optimal design of the flexure mount using topology optimization with thermal stress constraint. By simplifying the optical mirror assembly into finite shell elements, topology optimization model was built for efficient design and good machinability. The stress at the boundary between the optical mirror and the mount together with the first natural frequency were applied as constraints for the optimization problem, while the objective function was set to minimize the strain energy. As a result, we obtained the optimal design of the flexure mount yielding the improved wavefront error, proper rigidity, and machinability.

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Chen, Tei-Chen, Ching-Jiung Chu, Chang-Hsien Ho, Chung-Chen Wu y Cheng-Chung Lee. "Determination of stress-optical and thermal-optical coefficients of Nb2O5 thin film material". Journal of Applied Physics 101, n.º 4 (15 de febrero de 2007): 043513. http://dx.doi.org/10.1063/1.2435796.

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Tesis sobre el tema "Thermal and optical stress"

Kylner, Carina. "Light scattering for analysis of thermal stress induced deformation in thin metal films". Doctoral thesis, KTH, Fysik, 1997. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2547.

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Today, thin film based devices are found in a wide field of applications. The main reasons are that thin film technology enables access to unique physical properties and possibilities to miniaturize devices. Thin film devices are generally described in terms such as electrical, optical and magnetical properties. However, the lifetime of these devices is often limited by mechanical stresses causing plastic deformation. An effect of the plastic deformation is hillocking where isolated features are created on the film surface. The continual need to improve performance, reduce size as well as cost is pushing thin film structures close to or beyond present fundamental understanding. Further progress requires better understanding of basic phenomena where analytical methods for characterization of thin film deformation play a crucial role. To follow the initial hillock formation during thermal treatments it is essential to have a suitable tool for achieving real-time measurements with high sensitivity over a relatively large area that does not considerably affect the film surface. Methods based on light scattering are generally very sensitive to changes in the surface topography and allow contact free measurements at high speed. In this thesis light scattering methods are investigated as tools for stress analysis of thin metal films. Detection and characterization of isolated surface features using angular resolved scattering has been investigated by simulations. Results were used in development of an optical instrument for simultaneous measurements of initial hillocking and changes in overall film stress. The instrument combines light scattering and laser beam deflection techniques. It is shown how the onset of initial hillocking in aluminum films is accompanied by stress relaxation. Real-time dark field microscopy was demonstrated as a technique for analysis of the lateral hillock distribution. Analysis of the distribution show clustering of hillocks which is supposed to be related to the microstructure of the film. It is demonstrated that copper inclusion can be used to strengthen aluminum films to withstand higher stress before hillocking occurs. The copper content also reduces the grain size and thereby the surface roughness, which results in good or even better optical performance than for pure aluminum films.

NR 20140805

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Amazirh, Abdelhakim. "Monitoring crops water needs at high spatio-temporal resolution by synergy of optical/thermal and radar observations". Thesis, Toulouse 3, 2019. http://www.theses.fr/2019TOU30101.

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L'optimisation de la gestion de l'eau en agriculture est essentielle dans les zones semi-arides afin de préserver les ressources en eau qui sont déjà faibles et erratiques dues à des actions humaines et au changement climatique. Cette thèse vise à utiliser la synergie des observations de télédétection multispectrales (données radar, optiques et thermiques) pour un suivi à haute résolution spatio-temporelle des besoins en eau des cultures. Dans ce contexte, différentes approches utilisant divers capteurs (Landsat-7/8, Sentinel-1 et MODIS) ont été developpées pour apporter une information sur l'humidité du sol (SM) et le stress hydrique des cultures à une échelle spatio-temporelle pertinente pour la gestion de l'irrigation. Ce travail va parfaitement dans le sens des objectifs du projet REC "Root zone soil moisture Estimates at the daily and agricultural parcel scales for Crop irrigation management and water use impact: a multi-sensor remote sensing approach" (http://rec.isardsat.com/) qui visent à estimer l'humidité du sol dans la zone racinaire (RZSM) afin d'optimiser la gestion de l'eau d'irrigation. Des approches innovantes et prometteuses sont mises en place pour estimer l'évapotranspiration (ET), RZSM, la température de surface du sol (LST) et le stress hydrique de la végétation à travers des indices de SM dérivés des observations multispectrales à haute résolution spatio-temporelle. Les méthodologies proposées reposent sur des méthodes basées sur l'imagerie, la modélisation du transfert radiatif et la modélisation du bilan hydrique et d'énergie et sont appliquées dans une région à climat semi-aride (centre du Maroc). Dans le cadre de ma thèse, trois axes ont été explorés. Dans le premier axe, un indice de RZSM dérivé de LST-Landsat est utilisé pour estimer l'ET sur des parcelles de blé et des sols nus. L'estimation par modélisation de ET a été explorée en utilisant l'équation de Penman-monteith modifiée obtenue en introduisant une relation empirique simple entre la résistance de surface (rc) et l'indice de RZSM. Ce dernier est estimé à partir de la température de surface (LST) dérivée de Landsat, combinée avec les températures extrêmes (en conditions humides et sèches) simulée par un modèle de bilan d'énergie de surface piloté par le forçage météorologique et la fraction de couverture végétale dérivée de Landsat. La méthode utilisée est calibrée et validée sur deux parcelles de blé situées dans la même zone près de Marrakech au Maroc. Dans l'axe suivant, une méthode permettant de récupérer la SM de la surface (0-5 cm) à une résolution spatiale et temporelle élevée est développée à partir d'une synergie entre données radar (Sentinel-1) et thermique (Landsat) et en utilisant un modèle de bilan d'énergie du sol. L'approche développée a été validée sur des parcelles agricoles en sol nu et elle donne une estimation précise de la SM avec une différence quadratique moyenne en comparant à la SM in situ, égale à 0,03 m3 m-3. Dans le dernier axe, une nouvelle méthode est développée pour désagréger la MODIS LST de 1 km à 100 m de résolution en intégrant le SM proche de la surface dérivée des données radar Sentinel-1 et l'indice de végétation optique dérivé des observations Landsat. Le nouvel algorithme, qui inclut la rétrodiffusion S-1 en tant qu'entrée dans la désagrégation, produit des résultats plus stables et robustes au cours de l'année sélectionnée. Dont, 3,35 °C était le RMSE le plus bas et 0,75 le coefficient de corrélation le plus élevé évalués en utilisant le nouvel algorithme
Optimizing water management in agriculture is essential over semi-arid areas in order to preserve water resources which are already low and erratic due to human actions and climate change. This thesis aims to use the synergy of multispectral remote sensing observations (radar, optical and thermal data) for high spatio-temporal resolution monitoring of crops water needs. In this context, different approaches using various sensors (Landsat-7/8, Sentinel-1 and MODIS) have been developed to provide information on the crop Soil Moisture (SM) and water stress at a spatio-temporal scale relevant to irrigation management. This work fits well the REC "Root zone soil moisture Estimates at the daily and agricultural parcel scales for Crop irrigation management and water use impact: a multi-sensor remote sensing approach" (http://rec.isardsat.com/) project objectives, which aim to estimate the Root Zone Soil Moisture (RZSM) for optimizing the management of irrigation water. Innovative and promising approaches are set up to estimate evapotranspiration (ET), RZSM, land surface temperature (LST) and vegetation water stress through SM indices derived from multispectral observations with high spatio-temporal resolution. The proposed methodologies rely on image-based methods, radiative transfer modelling and water and energy balance modelling and are applied in a semi-arid climate region (central Morocco). In the frame of my PhD thesis, three axes have been investigated. In the first axis, a Landsat LST-derived RZSM index is used to estimate the ET over wheat parcels and bare soil. The ET modelling estimation is explored using a modified Penman-Monteith equation obtained by introducing a simple empirical relationship between surface resistance (rc) and a RZSM index. The later is estimated from Landsat-derived land surface temperature (LST) combined with the LST endmembers (in wet and dry conditions) simulated by a surface energy balance model driven by meteorological forcing and Landsat-derived fractional vegetation cover. The investigated method is calibrated and validated over two wheat parcels located in the same area near Marrakech City in Morocco. In the next axis, a method to retrieve near surface (0-5 cm) SM at high spatial and temporal resolution is developed from a synergy between radar (Sentinel-1) and thermal (Landsat) data and by using a soil energy balance model. The developed approach is validated over bare soil agricultural fields and gives an accurate estimates of near surface SM with a root mean square difference compared to in situ SM equal to 0.03 m3 m-3. In the final axis a new method is developed to disaggregate the 1 km resolution MODIS LST at 100 m resolution by integrating the near surface SM derived from Sentinel-1 radar data and the optical-vegetation index derived from Landsat observations. The new algorithm including the S-1 backscatter as input to the disaggregation, produces more stable and robust results during the selected year. Where, 3.35 °C and 0.75 were the lowest RMSE and the highest correlation coefficient assessed using the new algorithm

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Schulze, Christopher A. [Verfasser]. "Minimizing Thermal Stress in Glass Production Processes : Model Reduction and Optimal Control / Christopher A Schulze". Aachen : Shaker, 2007. http://d-nb.info/1166509206/34.

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Åberg, Jonas. "On the Experimental Determination of Damping of Metals and Calculation of Thermal Stresses in Solidifying Shells". Doctoral thesis, KTH, Materialvetenskap, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4038.

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This thesis explores experimentally and theoretically two different aspects of the properties and behaviour of metals: their ability to damp noise and their susceptibility to crack when solidifying. The first part concerns intrinsic material damping, and is motivated by increased demands from society for reductions in noise emissions. It is a material’s inherent ability to reduce its vibration level, and hence noise emission, and transform its kinetic energy into a temperature increase. To design new materials with increased intrinsic material damping, we need to be able to measure it. In this thesis, different methods for measurement of the intrinsic damping have been considered: one using Fourier analysis has been experimentally evaluated, and another using a specimen in uniaxial tension to measure the phase-lag between stress and strain has been improved. Finally, after discarding these methods, a new method has been developed. The new method measures the damping properties during compression using differential calorimetry. A specimen is subjected to a cyclic uniaxial stress to give a prescribed energy input. The difference in temperature between a specimen under stress and a non-stressed reference sample is measured. The experiments are performed in an insulated vacuum container to reduce convective losses. The rate of temperature change, together with the energy input, is used as a measure of the intrinsic material damping in the specimen. The results show a difference in intrinsic material damping, and the way in which it is influenced by the internal structure is discussed. The second part of the thesis examines hot cracks in solidifying shells. Most metals have a brittle region starting in the two-phase temperature range during solidification and for some alloys this region extends as far as hundreds of degrees below the solidus temperature. To calculate the risk of hot cracking, one needs, besides knowledge of the solidifying material’s ability to withstand stress, knowledge of the casting process to be able to calculate the thermal history of the solidification, and from this calculate the stress. In this work, experimental methods to measure and evaluate the energy transfer from the solidifying melt have been developed. The evaluated data has been used as a boundary condition to numerically calculate the solidification process and the evolving stress in the solidifying shell. A solidification model has been implemented using a fixed-domain methodology in a commercial finite element code, Comsol Multiphysics. A new solidification model using an arbitrary Lagrange Eulerian (ALE) formulation has also been implemented to solve the solidification problem for pure metals. This new model explicitly tracks the movement of the liquid/solid interface and is much more effective than the first model.
QC 20100929

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Lankford, Maggie E. "Measurement of Thermo-Mechanical Properties of Co-Sputtered SiO2-Ta2O5 Thin Films". University of Dayton / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1627653071556618.

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Kravchenko, Grygoriy A. "Crack patterns in thin films and X-ray optics thermal deformations". [Tampa, Fla] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002770.

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Yi, Duo. "Intégration de capteurs à fibre optique par projection thermique pour des applications de contrôle de structures intelligentes". Thesis, Belfort-Montbéliard, 2016. http://www.theses.fr/2016BELF0285/document.

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Ce mémoire présente la modélisation, la simulation, l’expérimentation et la conception d’une structure composite intelligente pour des mesures de haute température (jusqu’à 300 °C). Pour ce faire, une fibre à revêtement métallique, particulièrement résistante pour de tels niveaux thermiques, a été considérée et intégrée au sein d’un revêtement d'alumine. La structure composite intelligente se compose alors du substrat, du dépôt et d’un capteur à fibre optique à modulation d’intensité. Pour mener cette étude, une estimation des flux thermiques basée sur le thermogramme expérimental s’est révélée nécessaire afin d’alimenter un modèle numérique. Différents modèles ont ensuite été construits afin d’évaluer les niveaux de températures atteints en surface ainsi que les niveaux de contraintes au sein même du composite. La simulation a montré que le dépôt pouvait thermiquement être considéré comme une couche mince et que la diffusion de la chaleur au sein du dépôt et du substrat était rapide et pouvait être estimée à l'échelle de la milliseconde. La répartition des contraintes est comme on pouvait s'y attendre dépendante du flux incident mais aussi de la géométrie globale du composite. Les contraintes restent relativement uniformes lors de l'échauffement et durant leur propagation mais s’intensifient après le refroidissement. Il s'avère également que les contraintes résultantes ne sont pas symétriques dans la fibre et sont dépendantes de la position de la fibre par rapport au substrat. Après une phase de modélisation des niveaux thermiques et des contraintes susceptibles d’être atteints au sein du matériau, une phase expérimentale consistant à intégrer une fibre optique non fonctionnalisée dans un dépôt d’alumine a donc été réalisée. Les observations microscopiques en surface et en coupe ont été effectuées afin de vérifier l’intégrité de la fibre intégrée. L’adhérence mécanique des fibres a ensuite été mesurée ainsi que l’atténuation optique pendant le processus d’intégration et le comportement thermique de l’ensemble durant des cyclages thermiques. Enfin, un capteur à fibre optique à modulation d’intensité a été conçu par intégration dans un dépôt céramique réalisé par projection thermique. Un système de mesure de la température a donc été construit et les premiers essais de réponse thermique ainsi que le cyclage thermique du capteur de température ont été effectués et analysés. En concluision, cette étude démontre la faisabilité d’une structure composite intelligente par intégration d'un capteur à modulation d’intensité à fibre optique dans un dépôt céramique élaboré par projection thermique susceptible de pouvoir travailler jusqu’à des températures de 300 °C
This paper presents the modeling, simulation, experimentation and design of a smart composite structrure for high temperature measurements (up to 300 °C). In order to achieve this goal, a high temperature resistant metal coated optical fiber was considered and integrated into alumina coating. The smart composite structure consists of a substrate, a coating and an intensity modulated optical fiber temperature sensor. Firstly, an estimation of heat flux based on a experimental thermogram was firstly carried out in order to feed a numerical modeling. Then, different modelings were built to evaluate the surface temperature levels as well as the composite stress levels. The simulation showed that the composite (substrate and coating) could be considered as a thermally thin medium, the heat propagation within the composite was fast and could be estimated at a scale of millisecond. The stresses remained relatively uniform during the heating process but intensified during the cooling process. The modeling also showed that the stresses are not symmetrical in the fiber and depend on the position of the fiber relative to the substrate. After a modeling evaluation of the thermal levels as well as the stresses that may be achieved in the composite, an experimental step integrating a optical fiber into a thermal coating was carried out. Microscopic observation of surface and cross section were conducted in order to analyze the characteristics of the integrated fiber. The mechanical strength of the integrated fiber was then measured and the optical attenuation during the integration process as well as the thermal behavior of the integrated fiber during the thermal cycling were evaluated. Finally, an intensity modulated optical fiber temperature sensor was designed and integrated into ceramic coating by thermal spraying. A temperature measuring system was designed and the first tests of the thermal response as well as thermal cycling of temperature sensor were carried out. This study demonstrates the feasibility of designing a high temperature resistant smart composite structure by integrating an intensity modulated optical fiber temperature sensor in a ceramic coating elaborated by thermal spraying

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Zhang, Bufa. "Optical methods of thermal diffusivity measurement". Thesis, London South Bank University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336374.

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Vuppala, Archana. "Thermal and thermal stress analyses of the state-changing tooling". abstract and full text PDF (free order & download UNR users only), 2008. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1460787.

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Sun, Mengyue SUN. "Optical sensor for normal stress distribution". University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1525432600494617.

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Libros sobre el tema "Thermal and optical stress"

Walid, Qaqish y Lewis Research Center, eds. Optical strain measurement system development: Final report. [Cleveland, Ohio]: National Aeronautics and Space Administration, 1987.

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Walid, Qaqish y Lewis Research Center, eds. Optical strain measurement system development: Phase I. [Cleveland, Ohio]: National Aeronautics and Space Administration, 1987.

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Saravanos, D. A. Optimal fabrication processes for unidirectional metal-matrix composites: A computational simulation. [Washington, D.C.]: NASA, 1990.

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Welch, Ashley J. y Martin J. C. van Gemert, eds. Optical-Thermal Response of Laser-Irradiated Tissue. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-90-481-8831-4.

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Welch, Ashley J. y Martin J. C. Van Gemert, eds. Optical-Thermal Response of Laser-Irradiated Tissue. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4757-6092-7.

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Gemert, Martin J. C. van y SpringerLink (Online service), eds. Optical-Thermal Response of Laser-Irradiated Tissue. Dordrecht: Springer Science+Business Media B.V., 2011.

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Lammel, Gerhard. Optical microscanners and microspectrometers using thermal bimorph actuators. Boston: Kluwer Academic, 2002.

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Lanin, Anatoly y Ivan Fedik. Thermal Stress Resistance of Materials. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-71400-2.

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Harry, Gregory, Timothy P. Bodiya y Riccardo DeSalvo, eds. Optical Coatings and Thermal Noise in Precision Measurement. Cambridge: Cambridge University Press, 2009. http://dx.doi.org/10.1017/cbo9780511762314.

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Lammel, Gerhard, Sandra Schweizer y Philippe Renaud. Optical Microscanners and Microspectrometers using Thermal Bimorph Actuators. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-1-4757-6083-5.

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Capítulos de libros sobre el tema "Thermal and optical stress"

Das, Animesh Chandra, Ryozo Noguchi y Tofael Ahamed. "An Assessment of Drought Stress in Tea Plantation Areas in Bangladesh Using Optical and Thermal Remote Sensing: A Climate Change Perspective". En New Frontiers in Regional Science: Asian Perspectives, 23–47. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-1188-8_2.

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Obata, Yoshihiro. "Optimal Design of Functionally Graded Materials". En Encyclopedia of Thermal Stresses, 3508–19. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-2739-7_232.

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Zohuri, Bahman y Nima Fathi. "Thermal Stress". En Thermal-Hydraulic Analysis of Nuclear Reactors, 413–32. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17434-1_15.

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Zohuri, Bahman. "Thermal Stress". En Thermal-Hydraulic Analysis of Nuclear Reactors, 501–22. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-53829-7_15.

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Geilfus, Christoph-Martin. "Thermal Stress". En Controlled Environment Horticulture, 99–111. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-23197-2_9.

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Finucane, Edward W. "Thermal Stress". En Concise Guide to Environmental Definitions, Conversions, and Formulae, 77–82. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003420002-5.

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Rogalski, Antoni y Zbigniew Bielecki. "Thermal Detectors". En Detection of Optical Signals, 157–200. New York: CRC Press, 2022. http://dx.doi.org/10.1201/b22787-5.

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Stieglitz, Robert y Werner Platzer. "Optical Conversion". En Solar Thermal Energy Systems, 121–242. Cham: Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-43173-9_3.

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Gooch, Jan W. "Thermal Stress Cracking". En Encyclopedic Dictionary of Polymers, 743. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_11767.

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Chanda, Pradip y Suparna Mukhopaddhyay. "Managing Thermal Stress". En Energy Systems in Electrical Engineering, 51–58. New Delhi: Springer India, 2016. http://dx.doi.org/10.1007/978-81-322-2722-9_5.

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Actas de conferencias sobre el tema "Thermal and optical stress"

Firth, Austin y Uma Srinivasan. "Laser Induced Thermal Stress in Optical Thin Films". En Optical Interference Coatings. Washington, D.C.: OSA, 2019. http://dx.doi.org/10.1364/oic.2019.thb.8.

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Côté, Patrice y Nichola Desnoyers. "Thermal stress failure criteria for a structural epoxy". En SPIE Optical Engineering + Applications, editado por Alson E. Hatheway. SPIE, 2011. http://dx.doi.org/10.1117/12.893832.

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Ryaboy, Vyacheslav M. "Analysis of thermal stress and deformation in elastically bonded optics". En Optical Engineering + Applications, editado por Alson E. Hatheway. SPIE, 2007. http://dx.doi.org/10.1117/12.732217.

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Klein, Claude A. "Thermal stress modeling for diamond-coated optical windows". En Boulder - DL tentative, editado por Harold E. Bennett, Lloyd L. Chase, Arthur H. Guenther, Brian E. Newnam y M. J. Soileau. SPIE, 1991. http://dx.doi.org/10.1117/12.57227.

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Grossman, K. R., R. Kelly Frazer, R. Bamberger y Joseph A. Miragliotta. "Optical technique to sense thermal stress in sapphire". En Aerospace/Defense Sensing, Simulation, and Controls, editado por Randal W. Tustison. SPIE, 2001. http://dx.doi.org/10.1117/12.439182.

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Thielsch, Roland, Joerg Heber, Torsten Feigl y Norbert Kaiser. "Stress, microstructure and thermal-elastic properties of evaporated thin MgF_2 - films". En Optical Interference Coatings. Washington, D.C.: OSA, 2004. http://dx.doi.org/10.1364/oic.2004.the6.

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Fang, Weidong, Qianbo Lu, Jian Bai, Peiwen Chen y Dandan Han. "Thermal stress of MOEMS accelerometers based on grating interferometric cavity". En Optical Design and Testing VIII, editado por Yongtian Wang, Kimio Tatsuno y Tina E. Kidger. SPIE, 2018. http://dx.doi.org/10.1117/12.2502273.

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Hsu, M. Y., W. C. Lin, M. Y. Yang, C. Y. Chan, Y. C. Lin, S. T. Chang, C. F. Ho y T. M. Huang. "The Cassegrain Telescope primary mirror isostatic mount design for thermal stress". En SPIE Optical Engineering + Applications, editado por Philip E. Ardanuy y Jeffery J. Puschell. SPIE, 2010. http://dx.doi.org/10.1117/12.860018.

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Shuying, Shao, Shao Jianda y Fan Zhengxiu. "Effects of different thermal histories on the residual stress of ZrO_2 thin films". En Optical Interference Coatings. Washington, D.C.: OSA, 2004. http://dx.doi.org/10.1364/oic.2004.mf5.

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Offermann, S., C. Bissieux y J. L. Beaudoin. "Optical and thermal restoration applied to thermo-elastic stress analysis by IR thermography". En 1998 Quantitative InfraRed Thermography. QIRT Council, 1998. http://dx.doi.org/10.21611/qirt.1998.019.

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Informes sobre el tema "Thermal and optical stress"

Barnard, Casey Anderson. Thermal-stress modeling of an optical microphone at high temperature. Office of Scientific and Technical Information (OSTI), agosto de 2010. http://dx.doi.org/10.2172/1005061.

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Pikin A., A. Kponou y L. Snydstrup. Optical, Thermal and Stress Simulations of a 300-kwatt Electron Collector. Office of Scientific and Technical Information (OSTI), julio de 2006. http://dx.doi.org/10.2172/1061837.

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Yahav, Shlomo, John McMurtry y Isaac Plavnik. Thermotolerance Acquisition in Broiler Chickens by Temperature Conditioning Early in Life. United States Department of Agriculture, 1998. http://dx.doi.org/10.32747/1998.7580676.bard.

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Resumen

The research on thermotolerance acquisition in broiler chickens by temperature conditioning early in life was focused on the following objectives: a. To determine the optimal timing and temperature for inducing the thermotolerance, conditioning processes and to define its duration during the first week of life in the broiler chick. b. To investigate the response of skeletal muscle tissue and the gastrointestinal tract to thermal conditioning. This objective was added during the research, to understand the mechanisms related to compensatory growth. c. To evaluate the effect of early thermo conditioning on thermoregulation (heat production and heat dissipation) during 3 phases: (1) conditioning, (2) compensatory growth, (3) heat challenge. d. To investigate how induction of improved thermotolerance impacts on metabolic fuel and the hormones regulating growth and metabolism. Recent decades have seen significant development in the genetic selection of the meat-type fowl (i.e., broiler chickens); leading to rapid growth and increased feed efficiency, providing the poultry industry with heavy chickens in relatively short growth periods. Such development necessitates parallel increases in the size of visceral systems such as the cardiovascular and the respiratory ones. However, inferior development of such major systems has led to a relatively low capability to balance energy expenditure under extreme conditions. Thus, acute exposure of chickens to extreme conditions (i.e., heat spells) has resulted in major economic losses. Birds are homeotherms, and as such, they are able to maintain their body temperature within a narrow range. To sustain thermal tolerance and avoid the deleterious consequences of thermal stresses, a direct response is elicited: the rapid thermal shock response - thermal conditioning. This technique of temperature conditioning takes advantage of the immaturity of the temperature regulation mechanism in young chicks during their first week of life. Development of this mechanism involves sympathetic neural activity, integration of thermal infom1ation in the hypothalamus, and buildup of the body-to-brain temperature difference, so that the potential for thermotolerance can be incorporated into the developing thermoregulation mechanisms. Thermal conditioning is a unique management tool, which most likely involves hypothalamic them1oregulatory threshold changes that enable chickens, within certain limits, to cope with acute exposure to unexpected hot spells. Short-tem1 exposure to heat stress during the first week of life (37.5+1°C; 70-80% rh; for 24 h at 3 days of age) resulted in growth retardation followed immediately by compensatory growth" which resulted in complete compensation for the loss of weight gain, so that the conditioned chickens achieved higher body weight than that of the controls at 42 days of age. The compensatory growth was partially explained by its dramatic positive effect on the proliferation of muscle satellite cells which are necessary for further muscle hypertrophy. By its significant effect of the morphology and functioning of the gastrointestinal tract during and after using thermal conditioning. The significant effect of thermal conditioning on the chicken thermoregulation was found to be associated with a reduction in heat production and evaporative heat loss, and with an increase in sensible heat loss. It was further accompanied by changes in hormones regulating growth and metabolism These physiological responses may result from possible alterations in PO/AH gene expression patterns (14-3-3e), suggesting a more efficient mechanism to cope with heat stress. Understanding the physiological mechanisms behind thermal conditioning step us forward to elucidate the molecular mechanism behind the PO/AH response, and response of other major organs. The thermal conditioning technique is used now in many countries including Israel, South Korea, Australia, France" Ecuador, China and some places in the USA. The improvement in growth perfom1ance (50-190 g/chicken) and thermotolerance as a result of postnatal thermal conditioning, may initiate a dramatic improvement in the economy of broiler's production.

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P.E. Klingsporn. Characterization of Optical Fiber Strength Under Applied Tensile Stress and Bending Stress. Office of Scientific and Technical Information (OSTI), agosto de 2011. http://dx.doi.org/10.2172/1054754.

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Sides, Scott W. Thermal-Mechanical Stress in Semiconductor Devices. Office of Scientific and Technical Information (OSTI), septiembre de 2018. http://dx.doi.org/10.2172/1471421.

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Chochoms, Michael. Thermal Stress Awareness, Self-Study #18649. Office of Scientific and Technical Information (OSTI), noviembre de 2016. http://dx.doi.org/10.2172/1333117.

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Dai, Steve Xunhu y Robert Chambers. Thermal mechanical stress modeling of GCtM seals. Office of Scientific and Technical Information (OSTI), septiembre de 2015. http://dx.doi.org/10.2172/1222660.

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Wemple, R. P. y D. B. Longcope. Thermal stress fracturing of magma simulant materials. Office of Scientific and Technical Information (OSTI), octubre de 1986. http://dx.doi.org/10.2172/7049178.

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Johnson, G. L., W. Stein, S. C. Lu y R. A. Riddle. SLAC divertor channel entrance thermal stress analysis. Office of Scientific and Technical Information (OSTI), julio de 1985. http://dx.doi.org/10.2172/5381884.

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Lewis, James K. Configuration of PIPS for Thermal Stress Calculations. Fort Belvoir, VA: Defense Technical Information Center, septiembre de 2001. http://dx.doi.org/10.21236/ada626105.

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