Relevant bibliographies by topics / Dissimilaire

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Academic literature on the topic 'Dissimilaire'

Author: Grafiati
Published: 25 January 2025

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Journal articles on the topic "Dissimilaire"

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Lima, Luciana Iglésias Lourenço, Guilherme Marconi Silva, Angel Raphael Arce Chilque, Mônica Maria de Abreu Mendonça Schvartzman, Alexandre Queiroz Bracarense, and Marco Antônio Dutra Quinan. "Caracterização microestrutural de soldas dissimilares dos aços ASTM A-508 e AISI 316L." Soldagem & Inspeção 15, no. 2 (June 2010): 112–20. http://dx.doi.org/10.1590/s0104-92242010000200005.

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As soldas dissimilares (dissimilar metal welds - DMWs) são utilizadas em diversos segmentos da indústria. No caso específico de usinas nucleares, tais soldas são necessárias para conectar tubulações de aço inoxidável com componentes fabricados em aços baixa liga. Os materiais de adição mais utilizados neste tipo de solda são as ligas de níquel 82 e 182. Este trabalho consistiu na soldagem de uma junta dissimilar de aço baixa liga ASTM A-508 G3 e aço inoxidável austenítico AISI 316L utilizando as ligas de níquel 82 e 182 como metais de adição. A soldagem foi realizada manualmente empregando os processos de soldagem ao arco SMAW (Shielded Metal Arc Welding) e GTAW (Gas Tungsten Arc Welding). Os corpos de prova foram caracterizados microestruturalmente utilizando-se microscópio óptico e microscópio eletrônico de varredura com microanálise por dispersão de energia de raios X (EDS) e ensaios de microdureza Vickers. Observou-se uma microestrutura constituída de dendritas de austenita com a presença de precipitados com formas e dimensões definidas pelo aporte térmico e pela direção de soldagem. Não houve variação significativa da dureza ao longo da junta soldada, demonstrando a adequação dos parâmetros de soldagem utilizados.
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Benevides, Aline de Lima. "O processamento lexical do acento em pseudopalavras a partir da leitura de falantes do português brasileiro." Filologia e Linguística Portuguesa 26, no. 2 (December 31, 2024): 241–59. https://doi.org/10.11606/issn.2176-9419.v26i2p241-259.

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Este trabalho investigou, a partir de um estudo experimental, o papel da similaridade fonológica, da frequência de ocorrência da palavra base e da sílaba final na atribuição do acento primário em pseudopalavras a partir da produção de falantes nativos do português brasileiro. A métrica de criação das pseudopalavras baseou-se no estudo de Protopapas et al. (2006). As palavras a partir das quais as pseudopalavras foram criadas tinham alta ou baixa frequência de ocorrência, três sílabas de extensão. Contrastaram-se quatro grupos experimentais: i. similar de alta frequência; ii. dissimilar de alta frequência; iii. similar de baixa frequência; e iv. dissimilar de baixa frequência. Hipotetizou-se que pseudopalavras similares de alta frequência desencadeassem mais processos analógicos do que pseudopalavras dissimilares. Participaram do estudo 34 falantes, em uma tarefa de leitura. Os resultados demonstraram que a semelhança entre palavras reais e pseudopalavras desencadeia processos analógicos com a extensão do padrão acentual e que a frequência de ocorrência da palavra alvo e a sílaba final também são relevantes. Tais resultados trazem indícios de que o acento é armazenado juntamente com a palavra (isto é, é lexical) e de que os níveis segmental, silábico e acentual interagem na determinação do local em que o acento incide.
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Maksymova, S. V., P. V. Kovalchuk, and V. V. Voronov. "Vacuum brazing of kovar–molybdenum dissimilar joints." Paton Welding Journal 2021, no. 7 (July 28, 2021): 13–18. http://dx.doi.org/10.37434/tpwj2021.07.03.

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Grühn, Monika. "Hahnemann's Dissimilar Diseases." Homoeopathic Links 24, no. 04 (December 2011): 226–31. http://dx.doi.org/10.1055/s-0031-1280285.

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Carlone, Pierpaolo, and Antonello Astarita. "Dissimilar Metal Welding." Metals 9, no. 11 (November 9, 2019): 1206. http://dx.doi.org/10.3390/met9111206.

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The combination of distinct materials provides intriguing opportunities in modern industry applications, whereas the driving concept is to design parts with the right material in the right place [...]
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Lomholt, Michael A., Ludvig Lizana, and Tobias Ambjörnsson. "Dissimilar bouncy walkers." Journal of Chemical Physics 134, no. 4 (January 28, 2011): 045101. http://dx.doi.org/10.1063/1.3526941.

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O’Donnell, Jacqueline, and Charles Fisch. "Dissimilar atrial rhythm." ACC Current Journal Review 8, no. 3 (May 1999): 63–65. http://dx.doi.org/10.1016/s1062-1458(99)00015-x.

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Sethi, Ankur, and Rutash Mittal. "Comparative Evaluation of Mechanical Characterization Features of Dissimilar Weldments." International Journal of Trend in Scientific Research and Development Volume-2, Issue-3 (April 30, 2018): 1823–26. http://dx.doi.org/10.31142/ijtsrd11530.

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Ashok Kumar, R., and M. R. Thansekhar. "Wear Behaviour of Friction Stir Welded Dissimilar Aluminium Alloys." METALLOFIZIKA I NOVEISHIE TEKHNOLOGII 41, no. 2 (March 27, 2019): 203–11. http://dx.doi.org/10.15407/mfint.41.02.0203.

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Vijaya Sankar, B., I. Daniel Lawrence, and S. Jayabal. "Prediction of Spot Welding Parameters for Dissimilar Weld Joints." Bonfring International Journal of Industrial Engineering and Management Science 6, no. 4 (October 31, 2016): 123–27. http://dx.doi.org/10.9756/bijiems.7542.

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Dissertations / Theses on the topic "Dissimilaire"

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Abotaleb, Ahmed. "Advanced modeling and optimization of the friction stir welding process : applications to Inconel 718 and high-performance alloys." Electronic Thesis or Diss., Strasbourg, 2024. http://www.theses.fr/2024STRAD024.

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Cette thèse porte sur le soudage par friction-malaxage (FSW) appliqué à l'Inconel 718 et au soudage dissemblable avec le Ti-6Al-4V. Un modèle thermomécanique, développé sous COMSOL Multiphysics v5.3 et validé pour l’aluminium 6061-T6, a été adapté à l’Inconel 718. Une analyse paramétrique, incluant vitesse de rotation, vitesse de soudage, force axiale, dimensions de l’outil, refroidissement actif et préchauffage par induction, a été réalisée via des méthodes comme Taguchi, ANOVA et régression non linéaire. Les résultats montrent que la force axiale et la vitesse de rotation influencent fortement le procédé, tandis que le préchauffage et le refroidissement améliorent la dissipation thermique et la structure des grains. Enfin, des stratégies PID et MPC sont proposées pour optimiser le contrôle thermique, offrant des avancées pour le FSW des alliages haute performance
This study investigates friction stir welding (FSW), a solid-state joining technique for similar and dissimilar metallic materials, focusing on Inconel 718 and its dissimilar welding with Ti-6Al-4V. Using a thermomechanical model developed in COMSOL Multiphysics v5.3, validated with 6061-T6 Aluminum data and extended to Inconel 718, key parameters—rotational speed, welding speed, axial force, tool dimensions, active cooling, and induction preheating—were optimized through parametric study, Taguchi analysis, ANOVA, and non-linear regression. Results show axial force and rotational speed critically affect FSW, while induction preheating and active cooling enhance heat dissipation and grain structures. PID and MPC strategies are proposed for thermal control, advancing FSW optimization for high-performance alloys
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Mas, Fanny. "Solidification and phase transformations in a dissimilar steel weld 18MND5/309L/308L : evolution of microstructure and mechanical properties." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENI076/document.

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Les liaisons bimétalliques entre acier faiblement allié et acier inoxydable sont nombreuses au sein des réacteurs nucléaires français où elles assurent la connexion entre les principaux composants et les tuyauteries du circuit primaire. Le revêtement interne de cuve réalisé par soudage feuillard-flux est un autre cas de soudure dissimilaire dont le rôle est d'assurer une bonne protection contre la corrosion. Ce travail de thèse a notamment pour but de comprendre la genèse des microstructures complexes se formant à l'interface entre les deux aciers pendant le soudage. Il étudie d'autre part leur évolution durant le traitement thermique post-soudage à 610°C ainsi que les conséquences de ces transformations sur le comportement mécanique du joint soudé. Partant du métal de base, on rencontre successivement une fine bande de martensite, une zone purement austénitique puis la microstructure biphasée δ/γ de l'acier inoxydable. Des techniques de microscopie (MEB, EDS, EBSD) combinées à des calculs thermo-cinétiques (modèle de Scheil-Gulliver, surfusion en pointe de dendrite) ont permis d'expliquer le gradient de microstructure et les raisons des transitions de phases observées. Au cours du traitement thermique de détensionnement à 610°C, le gradient de potentiel chimique du carbone à travers l'interface de fusion cause la dissolution de la cémentite et la croissance des grains du côté faiblement allié. On observe également la diffusion du carbone à travers l'interface et la précipitation de carbures riches en Cr dans le liseré martensitique et la zone austénitique. Une caractérisation détaillée des profils de composition et de la précipitation a été réalisée à différentes échelles (depuis le millimètre jusqu'au niveau atomique). Un modèle mésoscopique, s'appuyant sur des bases de données thermodynamiques et cinétiques, a été développé pour coupler la diffusion à longue distance dans un milieu multi-constitué à la germination et croissance des précipités (approche de type Kampmann-Wagner). Il a permis de prévoir la teneur en carbone ainsi que la fraction volumique et la distribution de taille des précipités en fonction de la distance à l'interface. Les conséquences de la forte variabilité de microstructure sur le comportement mécanique local ont été analysées dans la dernière partie de ce travail, en particulier les aspects de déformation localisée et de rupture ductile. Des lois de comportement élasto-plastique ont été déterminées pour chacune des régions de l'assemblage à l'état détensionné. L'étude des mécanismes de rupture ductile dans les zones les plus faibles de la soudure, c'est-à-dire le métal de base décarburé et les couches de revêtement austénitique a donné lieu à des observations in-situ et une modélisation de l'endommagement
Dissimilar welds between low-alloy steel and stainless steel are numerous within the French nuclear power plants where they enable connecting the main components to the primary circuit pipes. The internal cladding (in stainless steel) of the pressure vessel (in bainitic steel) made by submerged arc welding is another case of dissimilar weld whose goal is the protection against corrosion. This PhD work aims at understanding the complex microstructures which form at the interface between both steels during welding together with their evolution during the post-weld heat-treatment at 610°C and their consequences on the mechanical behavior of the welded assembly. Starting from the base metal, one meets successively a thin layer of martensite, a fully austenitic zone and the two-phase δ/γ microstructure of the stainless steel. Microscopy techniques (SEM, EDS, EBSD) combined with thermo-kinetics calculations (Scheil-Gulliver model, dendrite tip undercooling) have allowed explaining the graded microstructure and the reasons for the observed phase transitions. During the post-weld heat-treatment, the large gradient of carbon chemical potential across the fusion line leads to cementite dissolution and grain growth on the low-alloyed side. Carbon diffusion through the interface and Cr-rich carbides precipitation in both the martensitic layer and the austenitic weld have also been observed. An in-depth characterization has been performed at different scales (from the millimeter to the atomic level) to quantify the extent of carbon diffusion and carbides precipitation during the phase transformations. A mesoscopic thermodynamic and kinetic model based on Calphad databases has been developed to fully couple long-range diffusion in a multi-component system with precipitates nucleation and growth (Numerical Kampmann-Wagner approach). It allowed a prediction of the carbon content, volume fraction and size distribution of the precipitates at any distance from the fusion line. The consequences of the high variability of microstructures on the local mechanical behavior have been examined in the last part of this work, in particular the localization of deformation and the ductile failure. Elasto-plastic constitutive laws were determined for each region of the dissimilar weld in the heat-treated state. Ductile failure mechanisms in the weak zones of the weld, namely the decarburized base metal and the stainless steel cladding layers, were investigated through in-situ observations and damage modeling
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Mirim, Denilson de Camargo. "Investigação da tensão residual na soldagem laser entre o aço carbono AISI 1010 e o aço inoxidável AISI 304." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/85/85134/tde-17062011-152023/.

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Um dos mais críticos problemas encontrados na união de materiais distintos é a formação de tensões residuais, que ocorre principalmente pelo fato desses materiais possuírem coeficientes de expansão térmica e condutividades térmicas diferentes. Neste trabalho foi estudada a técnica de soldagem laser entre o aço carbono AISI 1010 e o aço inoxidável AISI 304. Os materiais foram unidos por solda autógena de topo com um laser de Nd:YAG contínuo. O principal objetivo do estudo foi a identificação da influência dos parâmetros de soldagem, pela análise das tensões residuais na zona termicamente afetada (ZTA). Foi executado um planejamento fatorial de três fatores a dois níveis com uma réplica, em que foram variadas a potência, a velocidade de soldagem e a posição focal do feixe laser. Na superfície da amostra foram realizadas medidas de tensão residual pela técnica de difração de raios X, para estudar sua variação em função dos parâmetros investigados. O método do furo cego foi também utilizado para avaliar a tensão residual ao longo da profundidade das amostras até a profundidade de 1 mm. Além das medidas de tensão residual, os cordões de solda foram avaliados por microscopia óptica e eletrônica de varredura (MEV), que tiveram como objetivos determinar a geometria do cordão e mudanças na microestrutura, também foram feitas medidas de microdureza Vickers para se avaliar a extensão da ZTA. Para se avaliar as propriedades mecânicas da união foram realizados ensaios de tração e fadiga. O software MINITAB 15 foi utilizado para a análise das tensões residuais nas diferentes profundidades da ZTA obtidas pelo método do furo cego. Foi utilizada também a regressão estatística baseada nas diferentes influências da entrada e combinação dos fatores na tensão residual geradas nessa união. Os resultados indicam que o desenvolvimento de modelos pode prever as respostas satisfatoriamente e fornecer aos usuários um guia para definir os melhores parâmetros de união.
The dissimilar materials union has the residual stress formation as one of the most critical problems, which occurs mainly because these materials have both different thermal expansion coefficients and thermal conductivities. In this study, it was investigated the laser welding technique between steels, AISI 1010 and AISI 304. The materials were joined by butt autogenous welding with a continuous Nd:YAG laser. The main objective was to identify the welding parameters influence by the residual stresses analysis in the heat affected zone (HAZ). It was executed a factorial design with three-factor at two levels with a replica, which were varied power, welding speed and focal position of the laser beam. Residual stress measurements by the diffraction of X-rays were performed on the sample surface, to study their variation as a function of the parameters investigated. The blind hole method was also used to evaluate the residual stress along the samples depth, up to depth of 1mm. Besides residual stress measurement, weld seams were evaluated by optical and scanned electron microscopy, which were aimed to determine the weld geometry and changes in the microstructure. It was also made Vickers hardness measurements to evaluate the extent of HAZ. To evaluate the mechanical properties of the union were performed tensile and fatigue test. The MINITAB 15 software was used to analyze the residual stresses obtained by the blind hole method at different depths of the HAZ. It was also used statistical regression based on both the influences different and the combination of this input factors, in the residual stress of union. The results indicate that the models can satisfactorily predict the responses and provide users a guide to better define the welding parameters.
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Silva, Sandro Luz da [UNESP]. "Análise de juntas soldadas de aços dissimilares AISI 304 e SAE 1020 com metais de adição ER 309L e ER 70S3 pelo processo GTAW." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/146732.

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Atualmente os processos de soldagem de juntas dissimilares são muito utilizados na indústria petrolífera e nuclear, caracterizada pela união entre diferentes materiais. No presente trabalho, será estudada a possibilidade da união entre o aço inoxidável AISI 304 e aço carbono SAE 1020. Os quais são largamente utilizados em linhas de vapor em plantas de energia, em reatores nucleares, plantas petroquímicas, devido suas diferentes propriedades mecânicas e resistência à corrosão. Este trabalho tem por objetivo principal, estudar profundamente, as propriedades mecânicas, físicas e químicas, com o auxílio de testes e equipamentos específicos: ensaios de Microdureza Vickers, ensaio de tração, de interpretação das macrografias e micrografias utilizando microscopia ótica e também análise da difração de raios x das juntas soldadas. Foram executadas pesquisas bem fundamentadas, para verificar e discutir os resultados obtidos, justificando a substituição das varetas de aço inoxidável AWS ER 309L, por varetas de aço carbono AWS ER 70S3 como metal de adição, utilizando processo de soldagem manual GTAW (Gas-Shielded Tungsten Arc Welding), objetivando a redução de custo no processo de soldagem e viabilizando um bom investimento para pesquisas futuras.
Nowadays the welding processes of dissimilar joints are widely used in the oil and nuclear industry, characterized by the union of different materials. In the present work, will be studied the possibility of union between stainless steel AISI 304 and carbon steel SAE 1020. Which are widely used in steam lines in power plants, nuclear reactors, petrochemical plants, due to their different mechanical and corrosion resistance properties. The main objective of this work is to study deeply the mechanical, physical and chemical properties, evaluated by specific tests and equipments: Vickers hardness tests, tensile tests, interpretation of macrographs and micrographs utilizing the optical microscope and also analysis of x-ray diffraction applied to the welded joints. Well-founded research have performed to verify and discuss the results. Justifying the replacement of stainless steel rods AWS ER309L, carbon steel rods AWS ER70S3 as filler metal, using manual welding process GTAW (Gas-Shielded Tungsten Arc Welding), aiming the cost reduction in welding and process, making a possible good investment for future research.
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Dawson, Karl. "Dissimilar metal welds." Thesis, University of Liverpool, 2012. http://livrepository.liverpool.ac.uk/7373/.

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This dissertation details the findings of experimental investigations of welds made between ferritic creep resistant steels that differ in chromium content. Analysis of the microstructural evolution during the application of post weld heat treatments is reported. Particular attention was paid to the key alloy strengthening mechanisms and the manner in which they were affected by carbon redistribution which takes place when these welds are exposed to high temperatures. The fusion interface regions of transition joints, made between P91 parent alloy and P22, P23 and P24 type weld consumables, were analysed in as received and post weld heat treated conditions. Carbon redistribution from the low to higher alloyed material, which resulted in its depletion from weld alloy adjacent to the fusion line, was confirmed in all weld systems subsequent to post weld heat treatment (PWHT). The effect of tempering treatments, carried out at 730°C for two and eight hour durations, on carbide populations in partially decarburised weld alloy was explored. The consequential microstructural changes, which were affected by the dissolution of M23C6 and M7C3 carbides, were compared to those observed in regions of weld alloy unaffected by carbon depletion. High resolution transmission electron microscopy (HRTEM) and field emission scanning electron microscopy (FESEM) were used extensively in the analysis of weld metal and heat affected zone (HAZ) microstructures. Electron diffraction and x-ray energy dispersive spectroscopy were exploited in the crystallographic and chemical characterisation of precipitates. Their evolution as a function of thermal exposure is presented for each alloy. Chemical signatures for each precipitate species, which enabled their identification, were determined for carbides in the different alloys. However, due to variations in the compositions of fusion interface M23C6 carbides, some permutations of which overlapped with compositions of M7C3, satisfactory identification demanded classification of their crystal structure. A significant difference between the microstructures of P23 and P24 alloys, in the weld specimens tested, was observed. Although vanadium and niobium carbonitrides (MX) were identified in both alloys, their distributions were not the same. Retention of carbonitride particles within partially decarburised P23 and P24 weld materials, subsequent to 8 hours post weld heat treatment, has been substantiated. Diffraction intensity distributions in Debye-Scherrer ring patterns, which were generated from MX precipitation, indicated lattice parameters varied. Microanalysis revealed that MX precipitates were present over a wide range of compositions. A combination of the composition analysis and diffraction studies indicated that MX precipitation was stable over a range of compositions in the carbon depleted regions of P24 alloy. Recrystallisation of the bainitic P22 weld alloy adjacent to the fusion line, which was accompanied by a loss of material hardness, was observed in 2 and 8 hour PWHT P91/P22 welds. It has been shown that the microstructural stabilisation of carbon depleted T/P23 and T/P24 alloys was conferred by a dispersion of MX precipitates. Retention of these stable particles, which in many cases are less than 10 nm in diameter, in carbon depleted material, resulted in the complete avoidance of any recrystallisation in 2 hour post weld heat treated T/P23 and T/P24 welds and only isolated occurrences in 8 hour tempered specimens. Subgrain size distributions were determined from electron channeling contrast images of various regions of the dissimilar metal welds. Results showed that, although recrystallisation of MX forming alloys did not occur, destabilisation of lath boundaries, due to the dissolution of M23C6 and M7C3 carbides, results in a coarser subgrain microstructure in carbon depleted P24 weld alloy. The loss of resistance to plastic deformation as a result of recrystallisation, which has been shown to take place in decarburised P22 alloy, was not observed in the alloys which precipitated the MX phase.
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BANGASH, MUHAMMAD KASHIF. "Joining of Dissimilar Materials." Doctoral thesis, Politecnico di Torino, 2018. http://hdl.handle.net/11583/2711296.

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Material manufacturers and engineering structure designers are currently focusing new ways to exploit the benefits of light-weight, hybrid materials with improved properties at a low cost. The ability to join dissimilar materials is enabling the design engineers to develop light-weight and efficient automobiles, aircraft and space vehicles. The objective of this PhD research study was to produce alternative and efficient joining solutions for automotive and aerospace applications. The joining of dissimilar material was experimented to obtain light-weight Fibre Reinforced Polymer (FRP) sandwich composites, Al-foam sandwich (AFS) composites, hybrid dynamic FRP epoxy/polyurethane composites and the joining of Ti6Al4V alloy with and without surface modification to Ceramic Matrix Composite (CMC) and itself. The joining of Al-foam and Al-honeycomb to FRP skins was performed. The experimental results show that higher flexural properties can be achieved by replacing Al-honeycomb with low-cost Al-foam as a core material in the sandwich structures. Compared to FRP-honeycomb sandwich panels, FRP-Al foam sandwich panels display ~25 % and ~65 % higher flexural strength in a long and short span three-point bending tests respectively. AFS composites with complete metallic character, to withstand high-temperature application conditions, were produced by soldering/brazing techniques using Zn-based and Al-based joining alloys. A post-brazing thermal treatment was designed to recover the mechanical properties of AFS composites, lost during the soldering/brazing process. The microstructural analysis of the Al-skin/Al-foam interface revealed that the diffusion of joining materials into the joining substrates (Al-sheet and Al-foam) was achieved. Around 80% higher bending load before failure was observed when the AFS specimens produced with Zn-based joining alloys were subjected to flexural load compared to those produced with Al-based joining alloys. Hybrid dynamic Carbon Fibre Reinforced Polymer (CFRP) composites with enhanced impact properties were produced by exploiting the reversible cross-linking functionalities of dynamic epoxy and dynamic PU resin systems. By joining dynamic CFRP-epoxy and dynamic CFR-PU laminates, hybrid dynamic composite in three different configurations and a non-hybrid composite were obtained. The four dynamic composites were characterised for structural, thermal, flexural and impact properties. The damage initiation upon impact was observed at around 95% higher energy level in the hybrid configuration (CFRP-4), compared to the non-hybrid configuration. The hybrid configuration CFRP-3 responded with around 55% higher perforation threshold energy compared the non-hybrid configuration. Preliminary work on Adhesive joining of the Ti6Al4V alloy to itself was performed to analyse the effect micro-machining on adhesion and the effect of shape/design of micro-slots on an adhesive joint strength. Three types of micro-slots: V, semi-circle and U-shaped micro-slots were produced on Ti6Al4V sheet surface by using an in-house developed Micro-Electro-Discharge Machining (Micro-EDM) setup. Ti6Al4V alloy specimens with and without micro-machined surfaces were bonded together using a commercial epoxy adhesive. The Single Lap Offset (SLO) shear test results revealed that the micro-slot oriented perpendicular to the applied load displayed ~23 % higher joining strength compared to when the micro-slots were oriented parallel to the applied load. U-shaped micro-slots configuration displayed ~30 % improvement in the joint shear strength compared to the specimens with un-modified surfaces. The fractured surfaces analysis revealed mix (adhesive-cohesive) with cohesive dominated failure in bonded specimens with micro-machined surfaces compared to the as-received where pure adhesive failure was observed. The joining of CMCs (C/SiC and SiC/SiC) to Ti6Al4V alloy was experimented using active brazing alloy (Cusil-ABA) and Zr-based brazing alloy (TiB590) in a pressure-less argon atmosphere. The CMC-Ti6Al4V joint strength was further improved by modifying the surface of Ti6Al4V alloy using an in-house built Micro-EDM setup. Around 40% higher joining strength was recorded when the Zr-based brazing alloy was used as a joining material compared to the conventional active brazing alloy, Cusil-ABA. Improvement in the joining strength was noticed when the Ti6Al4V surface was modified prior to joining.
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Gonçalves, Vitor Manuel Martins. "Soldadura laser de ligações dissimilares." Phd thesis, Instituições portuguesas -- UTL-Universidade Técnica de Lisboa -- IST-Instituto Superior Técnico, 1998. http://dited.bn.pt:80/5.

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Stenhouse, Henry G. "Direct bonding dissimilar optical materials." Thesis, University of Southampton, 2018. https://eprints.soton.ac.uk/420653/.

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This thesis presents the work conducted during this project on direct bonding of dissimilar optical materials at the Optoelectronics Research Centre, University of Southampton. It covers the history and background of the art, before progressing to the development of unique bonding processes used during the research detailed. During this project, direct bonding using chemical and plasma activation is successfully conducted on both amorphous and crystalline materials. Bonding of borosilicate glass is demonstrated in the production of planar structured fibre preforms to be caned. Development of Nd:YAG to sapphire bonds is reported, producing bonds of remarkable resilience, capable of surviving dicing and polishing procedures. Zinc selenide to diamond and sapphire bonding is presented using a plasma activated approach along with investigation of the resulting bond’s limits, demonstrating the heat spreading benefits of a bonded diamond layer.
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Shukla, Nitin. "Heat Transport across Dissimilar Materials." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/27820.

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All interfaces offer resistance to heat transport. As the size of a device or structure approaches nanometer lengthscales, the contribution of the interface thermal resistance often becomes comparable to the intrinsic thermal resistance offered by the device or structure itself. In many microelectronic devices, heat has to transfer across a metal-nonmetal interface, and a better understanding about the origins of this interface thermal conductance (inverse of the interface thermal resistance) is critical in improving the performance of these devices. In this dissertation, heat transport across different metal-nonmetal interfaces are investigated with the primary goal of gaining qualitative and quantitative insight into the heat transport mechanisms across such interfaces. A time-domain thermoreflectance (TDTR) system is used to measure the thermal properties at the nanoscale. TDTR is an optical pump-probe technique, and it is capable of measuring thermal conductivity, k, and interface thermal conductance, G, simultaneously. The first study examines k and G for amorphous and crystalline Zr47Cu31Al13Ni9 metallic alloys that are in contact with poly-crystalline Y2O3. The motivation behind this study is to determine the relative importance of energy coupling mechanisms such as electron-phonon or phonon-phonon coupling across the interface by changing the material structure (from amorphous to crystalline), but not the composition. From the TDTR measurements k=4.5 W m-1 K-1 for the amorphous metallic glass of Zr47Cu31Al13Ni9, and k=5.0 W m-1 K-1 for the crystalline Zr47Cu31Al13Ni9. TDTR also gives G=23 MW m-2 K-1 for the metallic glass/Y2O3 interface and G=26 MW m-2 K-1 for the interface between the crystalline Zr47Cu31Al13Ni9 and Y2O3. The thermal conductivity of the poly-crystalline Y2O3 layer is found to be k=5.0 W m-1 K-1. Despite the small difference between k and G for the two alloys, the results are repeatable and they indicate that the structure of the alloy plays a role in the electron-phonon coupling and interface conductance. The second experimental study examines the effect of nickel nanoparticle size on the thermal transport in multilayer nanocomposites. These nanocomposites consist of five alternating layers of nickel nanoparticles and yttria stabilized zirconia (YSZ) spacer layers that are grown with pulsed laser deposition. Using TDTR, thermal conductivities of k=1.8, 2.4, 2.3, and 3.0 W m-1 K-1 are found for nanocomposites with nickel nanoparticle diameters of 7, 21, 24, and 38 nm, respectively, and k=2.5 W m-1 K-1 for a single 80 nm thick layer of YSZ. The results indicate that the overall thermal conductivity of these nanocomposites is strongly influenced by the Ni nanoparticle size and the interface thermal conductance between the Ni particles and the YSZ matrix. An effective medium theory is used to estimate the lower limits for the interface thermal conductance between the nickel nanoparticles and the YSZ matrix (G>170 MW m-2 K-1), and the nickel nanoparticle thermal conductivity.
Ph. D.
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Race, Julia Margaret. "Carbon diffusion across dissimilar steel welds." Thesis, University of Cambridge, 1992. https://www.repository.cam.ac.uk/handle/1810/221881.

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Books on the topic "Dissimilaire"

1

Norman, Bailey, and Welding Institute, eds. Welding dissimilar metals. Cambridge, Eng: Welding Institute, 1986.

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Dwivedi, Dheerendra Kumar. Dissimilar Metal Joining. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1897-3.

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McKenzie, Lara. Age-Dissimilar Couples and Romantic Relationships. London: Palgrave Macmillan UK, 2015. http://dx.doi.org/10.1057/9781137446770.

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Goldberg, Beth. Photographs updated: Similar images/dissimilar motives. Rohnert Park, Calif: University Art Gallery, Sonoma State University, 1990.

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Cloud, Gary L., Eann Patterson, and David Backman, eds. Joining Technologies for Composites and Dissimilar Materials, Volume 10. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-42426-2.

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Sun, Zheng. Laser beam welding of austenitic-ferritic dissimilar steel joints. Lappeenranta: Lappeenranta University of Technology, 1992.

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Richey, Will H. Racism is a myth: We are not too dissimilar. Dubuque, Iowa: Kendall/Hunt, 1996.

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Ryabov, Vladimir Rafailovich. Welding of dissimilar and composite materials: Manual for welding specialists. Kiev: E.O. Paton Institute of Electric Welding, 1990.

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LaCrosse, Victoria D. J. Homogeneity of prejudice toward dissimilar outgroups as a function of ingroup membership. Sudbury, Ont: Laurentian University, Department of Psychology, 1987.

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Satoh, Gen. Modification and Integration of Shape Memory Alloys Through Thermal Treatments and Dissimilar Metal Joining. [New York, N.Y.?]: [publisher not identified], 2013.

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Book chapters on the topic "Dissimilaire"

1

Peretó, Juli. "Dissimilative Metabolism." In Encyclopedia of Astrobiology, 659. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_447.

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Peretó, Juli. "Dissimilative Metabolism." In Encyclopedia of Astrobiology, 441. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-11274-4_447.

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Peretó, Juli. "Dissimilative Metabolism." In Encyclopedia of Astrobiology, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-27833-4_447-2.

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Peretó, Juli. "Dissimilative Metabolism." In Encyclopedia of Astrobiology, 818–19. Berlin, Heidelberg: Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-65093-6_447.

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Dwivedi, Dheerendra Kumar. "Dissimilar Metal Joining Using Filler Wire Fed A-GTAW." In Dissimilar Metal Joining, 171–89. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1897-3_6.

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Dwivedi, Dheerendra Kumar. "Dissimilar Metal Joining Using A-GTAW and HW-GTAW." In Dissimilar Metal Joining, 137–70. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1897-3_5.

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Dwivedi, Dheerendra Kumar. "Dissimilar Metal Joining by Solid-State Joining Technologies." In Dissimilar Metal Joining, 89–135. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1897-3_4.

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Dwivedi, Dheerendra Kumar. "Fundamentals of Dissimilar Metal Joining by Arc and Resistance Welding Processes." In Dissimilar Metal Joining, 23–61. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1897-3_2.

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Dwivedi, Dheerendra Kumar. "Adhesive Joining of Dissimilar Metals." In Dissimilar Metal Joining, 287–305. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1897-3_11.

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Dwivedi, Dheerendra Kumar. "Residual Stress and Thermal Treatment of Dissimilar Metal Joints." In Dissimilar Metal Joining, 307–34. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1897-3_12.

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Conference papers on the topic "Dissimilaire"

1

Sepold, Gerd, and Michael Kreimeyer. "Joining of dissimilar materials." In LAMP 2002: International Congress on Laser Advanced Materials Processing, edited by Isamu Miyamoto, Kojiro F. Kobayashi, Koji Sugioka, Reinhart Poprawe, and Henry Helvajian. SPIE, 2003. http://dx.doi.org/10.1117/12.497587.

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Hanteer, Obaida, and Luca Rossi. "The meaning of dissimilar." In ASONAM '19: International Conference on Advances in Social Networks Analysis and Mining. New York, NY, USA: ACM, 2019. http://dx.doi.org/10.1145/3341161.3342941.

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Leznik, Mark, Johannes Grohmann, Nina Kliche, André Bauer, Daniel Seybold, Simon Eismann, Samuel Kounev, and Jörg Domaschka. "Same, Same, but Dissimilar." In ICPE '22: ACM/SPEC International Conference on Performance Engineering. New York, NY, USA: ACM, 2022. http://dx.doi.org/10.1145/3489525.3511699.

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Ainsworth, Robert A. "Dissimilar Metal Analysis and Issues." In ASME 2016 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/pvp2016-63977.

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Detailed analysis of dissimilar metal welds (DMWs) is difficult and the accuracy of the results is often limited by the availability of materials data and knowledge of operating conditions. There are few design or assessment procedures that explicitly take account of the presence of DMWs under high temperature creep and fatigue conditions. One that does is the UK R5 procedure, which provides a simplified assessment approach based on laboratory testing and stress analysis supported by service experience. This paper briefly summarises the R5 approach. Then, more recent work on performance of DMWs operating at high temperature and issues for development of analysis methods is discussed.
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Bharti, Arvind, and N. D. Pandey. "Laser welding of dissimilar alloys." In ICALEO® 2002: 21st International Congress on Laser Materials Processing and Laser Microfabrication. Laser Institute of America, 2002. http://dx.doi.org/10.2351/1.5066157.

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Licu, Gil Rupert, Nelvyn John Mendoza, Mark Kelvin See, Sonam, Carlo Noel Ochotorena, Maria Antonette Roque, and Edwin Sybingco. "Image stitching of dissimilar images." In 2015 International Conference on Humanoid, Nanotechnology, Information Technology,Communication and Control, Environment and Management (HNICEM). IEEE, 2015. http://dx.doi.org/10.1109/hnicem.2015.7393244.

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Peer, A., B. Stanczyk, and M. Buss. "Haptic telemanipulation with dissimilar kinematics." In 2005 IEEE/RSJ International Conference on Intelligent Robots and Systems. IEEE, 2005. http://dx.doi.org/10.1109/iros.2005.1545349.

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Roget, Beatrice, and Inderjit Chopra. "Control of Dissimilar Rotor Vibration." In 43rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2002. http://dx.doi.org/10.2514/6.2002-1448.

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Polyakov, Sergey V., Andreas Muller, Alexander Ling, Edward B. Flagg, Natalia Rutter, Edward Van Keuren, Alan L. Migdall, and Glenn S. Solomon. "Towards Interfacing Dissimilar Quantum Systems." In Quantum Electronics and Laser Science Conference. Washington, D.C.: OSA, 2010. http://dx.doi.org/10.1364/qels.2010.qthg5.

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Mvola, B., P. Kah, and J. Martikainen. "Dissimilar ferrous-nonferrous metal welding." In 2013 International Conference on Advanced Materials and Information Technology Processing. Southampton, UK: WIT Press, 2014. http://dx.doi.org/10.2495/amitp130301.

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Reports on the topic "Dissimilaire"

1

FLORO, JERROLD A., STEPHEN R. LEE, DAVID M. FOLLSTAEDT, and JOHN F. KLEM. Compliant substrate technology for dissimilar epitaxy. Office of Scientific and Technical Information (OSTI), March 2000. http://dx.doi.org/10.2172/753377.

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Daehn, Glenn S., Anupam Vivek, and Bert C. Liu. Collision Welding of Dissimilar Materials by Vaporizing Foil Actuator: A Breakthrough Technology for Dissimilar Metal Joining. Office of Scientific and Technical Information (OSTI), September 2016. http://dx.doi.org/10.2172/1416747.

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Han, Q. Reinforcement of Aluminum Castings with Dissimilar Metals. Office of Scientific and Technical Information (OSTI), January 2004. http://dx.doi.org/10.2172/885813.

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Han, Q., K. L. More, M. R. Myers, M. J. Warwick, and Y. C. Chen. Reinforcement of Aluminum Castings with Dissimilar Metals. Office of Scientific and Technical Information (OSTI), January 2004. http://dx.doi.org/10.2172/940372.

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Weihs, Timothy P. Brazing Dissimilar Metals with a Novel Composite Foil. Office of Scientific and Technical Information (OSTI), October 2018. http://dx.doi.org/10.2172/1476909.

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Kostka, Timothy D., and Jeremy Alan Templeton. Coupled thermomechanical modeling using dissimilar geometries in arpeggio. Office of Scientific and Technical Information (OSTI), November 2010. http://dx.doi.org/10.2172/1028947.

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Logan, Stephen. Chrysler Upset Protrusion Joining Techniques for Joining Dissimilar Metals. Office of Scientific and Technical Information (OSTI), September 2017. http://dx.doi.org/10.2172/1395240.

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Pribyl, Zachary Jerome. Structural Health Monitoring of Epoxy Bond between Dissimilar Materials. Office of Scientific and Technical Information (OSTI), December 2019. http://dx.doi.org/10.2172/1578015.

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Crawford, Susan L., Anthony D. Cinson, Matthew S. Prowant, Traci L. Moran, and Michael T. Anderson. Ultrasonic Evaluation of Two Dissimilar Metal Weld Overlay Specimens. Office of Scientific and Technical Information (OSTI), June 2012. http://dx.doi.org/10.2172/1049665.

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Vogel, Sven. BERT Non-Destructively Probes the Microstructure of Dissimilar Welds. Office of Scientific and Technical Information (OSTI), April 2024. http://dx.doi.org/10.2172/2332779.

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