Academic literature on the topic 'Fusion sélective au laser'
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Journal articles on the topic "Fusion sélective au laser"
NORIMATSU, Takayoshi. "Laser Fusion." Journal of The Institute of Electrical Engineers of Japan 131, no. 1 (2011): 14–17. http://dx.doi.org/10.1541/ieejjournal.131.14.
Full textNAKAI, Sadao. "Laser fusion." Review of Laser Engineering 15, no. 6 (1987): 441–46. http://dx.doi.org/10.2184/lsj.15.441.
Full textPujo Rossi, F., X. Burelle, C. Dot, P. Wary, and F. May. "416 Trabéculoplastie sélective par laser : effet sur la pression intra-oculaire." Journal Français d'Ophtalmologie 31 (April 2008): 139. http://dx.doi.org/10.1016/s0181-5512(08)71014-3.
Full textNakai, Sadao. "Laser Fusion Reactor." Kakuyūgō kenkyū 58, no. 1 (1987): 35–39. http://dx.doi.org/10.1585/jspf1958.58.35.
Full textNAKAI, SADAO. "Laser nuclear fusion." Review of Laser Engineering 21, no. 1 (1993): 187–91. http://dx.doi.org/10.2184/lsj.21.187.
Full textSoures, John M. "Fusion Laser Engineering." Optical Engineering 43, no. 12 (December 1, 2004): 2839. http://dx.doi.org/10.1117/1.1829715.
Full textNakai, S. "Laser fusion experiment." Laser and Particle Beams 7, no. 3 (August 1989): 467–75. http://dx.doi.org/10.1017/s0263034600007424.
Full textLe Corre, A., C. Dot, C. Grasswill, X. Burelle, J. F. Maurin, G. Ract-Madoux, N. Salaun, F. May, and J. P. Renard. "486 Trabéculoplastie sélective par laser : effet sur la pression intraoculaire à 1 an." Journal Français d'Ophtalmologie 32 (April 2009): 1S150. http://dx.doi.org/10.1016/s0181-5512(09)73610-1.
Full textNaouri, M. "Photothermolyse sélective des acrochordons par laser Alexandrite long pulse: la méthode « pop corn »." Annales de Dermatologie et de Vénéréologie 139, no. 12 (December 2012): B228. http://dx.doi.org/10.1016/j.annder.2012.10.398.
Full textNaouri, M. "Photothermolyse sélective des acrochordons par laser Alexandrite long pulse : la méthode « pop corn »." Annales de Dermatologie et de Vénéréologie 139, no. 6-7 (June 2012): H73—H74. http://dx.doi.org/10.1016/j.annder.2012.04.118.
Full textDissertations / Theses on the topic "Fusion sélective au laser"
Liu, Qi. "Etude sur fusion laser sélective de matériau céramique Zircone Yttriée." Phd thesis, Université de Technologie de Belfort-Montbeliard, 2013. http://tel.archives-ouvertes.fr/tel-00976254.
Full textKovaleva, Irina. "Simulation numérique des procédés de fabrication additive: projection laser et fusion laser sélective." Ecole nationale d'ingénieurs (Saint-Etienne), 2015. http://www.theses.fr/2015ENISE031.
Full textThis work is devoted to development of mathematical modeling methods of laser interaction with materials and porous media, used in the additive technologies for the production of volume products. The process of laser cladding suffers from faults and defects of parts and coatings obtained such as cracks, exudations, residual stresses and etc. Currently, the general theory of this process does not exist. A large number of parameters affect the laser cladding such as laser parameters (power, beam diameter, scanning speed, etc. ), parameters of powder and gas flow. Therefore, experimental investigations of optimum technological modes become the complex problem. The relevance of this work is the need to perform calculations and predictions of rational modes of laser treatment, due to the increasing quality requirements of manufactured parts and technological processes optimization. We investigated in details the parameters of the gas stream and the powder for different coaxial nozzles. The parameters of powder jet essentially depends on the geometrical configuration and the size of output nozzle channels and also the composition of the powder, its dispersion and features of particles interaction with the walls of nozzle. We developed a physical-mathematical model of acceleration of powder particles in the light field of a permanent laser radiation in the conditions of laser cladding owing to the force caused by the reaction of the material–vapor recoil from the beamed part of the particle. We proposed a calculation method of random packing of polydisperse spherical particles which allows, taking into account the weight force and adhesive force between the particles in contact, to obtain the internal structure of loose powder layer close to the real. Discrete model is developed to describe the processes of heat and mass transfer in loose powder layer, which is applicable in the conditions of local laser irradiation in selective laser melting and selective laser sintering. Physico-mathematical models proposed in this work and results of calculations are new and have a practical relevance. The reliability of spent researches is consistent qualitatively with experimental data
Zhang, Baicheng. "Fusion sélective par laser - influence de l'atmosphère et réalisation d'alliage in situ." Phd thesis, Université de Technologie de Belfort-Montbeliard, 2013. http://tel.archives-ouvertes.fr/tel-00880004.
Full textLi, Yingjie. "Fabrication Additive des Alliages d’Aluminium 6061 et 7075 avec Fusion Laser Sélective." Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCA010.
Full textThe purpose of this study is to use green laser SLM equipment to print crack-free 6061 and 7075 aluminum alloy samples and to investigate their mechanical properties. Compared to traditional infrared lasers, aluminum alloy powder has a higher absorption rate for green lasers, which means that lower energy densities can be used for printing. This reduces the evaporation of low-alloy elements. Additionally, Ti particles and TiC/SiC particles are added as nucleating agents to refine grains and reduce cracking. Three types of powders were prepared by mechanical mixing: 6061 + Ti particles, 7075 + Ti particles, and 7075 + TiC/SiC particles. The samples were printed using green laser equipment, different from the traditional infrared laser. The morphology and phase composition of the powders and printed parts were observed and studied using optical microscopy (OM), scanning electron microscopy (SEM), and X-ray diffraction (XRD). The strengthening mechanisms and mechanical properties of the printed samples were analyzed using high-resolution transmission electron microscopy (HRTEM), electron backscatter diffraction (EBSD), microhardness testing, and tensile testing equipment. By optimizing process parameters (laser power, scanning speed) and the proportion of added particles, crack-free 6061 and 7075 aluminum alloys were ultimately prepared, and their strengthening mechanisms were revealed. This provides a new approach for the SLM process to produce crack-free high-performance aluminum alloys.Experimental results indicate that during the green laser printing process with higher absorption rates, an energy density of 52.1 to 62.5 J/mm³ is sufficient to obtain relatively dense printed samples. The grains in the printed 6061 and 7075 aluminum alloy samples were large columnar grains (12.1-17.9 microns). The addition of titanium particles significantly refined the grains, transforming them into small columnar and equiaxed grains (0.9-1.63 microns). Besides serving as nucleation points, titanium particles reacted with the aluminum matrix to form Al3Ti, which was confirmed in the HRTEM of the 6061 prints and the XRD of the 7075 prints. The addition of titanium particles resulted in crack-free samples for both 6061 and 7075.Compared to the traditional infrared laser, the loss of Mg and Zn elements was reduced with the green laser, and the tensile properties were improved. The yield strength of the heat-treated 6061 alloys with 1% Ti content met the standards of forged AA6061, and the elongation reached 12.6%. The tensile strength of 7075 also approached 400 MPa, though further improvement in elongation is needed. Our attempts with 7075 + TiC/SiC also showed certain effects, indicating that printing aluminum alloys with a green laser is feasible
Regniere, Matthieu. "Impact du conditionnement de poudres de Ti6Al4V sur le procédé de fusion sélective laser." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEM038/document.
Full textSelective Laser Melting (SLM), through additive manufacturing process, allows the conception of specific shapes through a layer-by-layer building method from a powder bed. The emphasis between processing parameters as, laser power, scan speed, scan strategy… has already been well investigated for a wide panel of material. Nevertheless, the powder interaction with electromagnetic waves remains a topical issue to handle the stabilization of the melting pool, and optimize the amount of energy used within the process.The purpose of this survey is : (a) the understanding and handling of powder bed layering mechanism through SLM Phenix rolling blade ; (b) the analysis and quantification of morphological and microstructural evolutions single tracks according to SLM process and powder bed parameters ; (c) development of a thermal and microstructural model standing for post SLM single tracks edification.First of all, the process of powder spreading by rolling blade has been investigated in order to tame and modelize the porosity and effective thickness of the powder bed. Thereafter, characteristics of Ti6Al4V single tracks produced by SLM were analyzed according to process and bed powder parameters. This approach tends to quantify the impact of the powder bed packing on the SLM melting mechanism. Accordingly, fine microstructural analysis and reconstruction have been extracted. Finally, a radiative thermal model linked to a microstructural prediction of single tracks has been settled, leading to a deeper understanding of the melting mechanism
Maisonneuve, Julie. "Fabrication directe de pièces aéronautiques en TA6V et IN718 : projection et fusion sélective par laser." Paris, ENMP, 2008. http://www.theses.fr/2008ENMP0006.
Full textDefauchy, Denis. "Simulation du procédé de fabrication directe de pièces thermoplastiques par fusion laser de poudre." Phd thesis, Paris, ENSAM, 2013. http://pastel.archives-ouvertes.fr/pastel-00871731.
Full textDe, Terris Thibaut. "Fabrication additive par fusion laser sélective (SLM) d’un superalliage base nickel : relations procédé – microstructures – propriétés mécaniques." Thesis, Paris, ENSAM, 2019. http://www.theses.fr/2019ENAM0061.
Full textThe Selective Laser Melting (SLM) additive manufacturing process is a 3D metal printing process controlled by many parameters related to the machine and to the manufacturing environment. As a result, the quality of the parts (porosity rate, surface roughness) and the productivity depend on the parameters. The work carried out aims to optimize the SLM process in order to be able to produce exchangers for Air Liquide. On the other hand, once the process is optimized, it is necessary to qualify the microstructures induced by the process, and their effects on the mechanical properties. The first part of the study consisted in developing sets of parameters allowing to reduce as much as possible the porosity of the parts, while improving the surface roughness and the productivity. A lot of experimental work has been carried out on the SLM machine of the PIMM laboratory, and a wide exploration of the effects of the first and second order parameters has been done on Inconel 625. The second part of the study consisted of studying the microstructures of parts developed by SLM, from their raw state to their recrystallized state after heat treatment. The relationship between the manufacturing process and the microstructures has been demonstrated, and the mechanical properties of raw and heat-treated parts were then characterized. It appears that the manufacturing parameters will influence the raw microstructural state, on which the mechanical properties depend. Indeed, columnar grains are formed along the building direction. The use of a suitable heat treatment, however, makes it possible to cancel the effect of the process
Pavlov, Mikhail. "Application des dispositifs de diagnostic optique multi-spectraux dans les procédés de fabrication additive : fusion sélective par laser et projection laser coaxiale." Ecole nationale d'ingénieurs (Saint-Etienne), 2011. http://www.theses.fr/2011ENISE007.
Full textThe manuscript contains four chapters including a general introduction presenting the optical diagnostics, followed by a chapter on the application of the selective laser melting and two chapters on a process of laser cladding. Chapter 1 is an introduction to optical diagnostics tools designed to measure the temperature of an object without physical contact. The importance of the choice of the spectral band as a function of temperature is also highlighted. Chapter 2 describes the study the process of selective laser melting. The first part concerns the description of the selective laser melting machine used. On this machine various optical elements have been added for visualization of powder layering process and the molten pool coaxially with the laser beam. Chapter 3 describes the study of laser cladding of titanium carbide and steel powders. This chapter begins with a bibliographical part. Thermal imaging camera (3-5 micron band) and a multi-wavelength pyrometer (1-1. 27 microns) were applied to monitor the zone of laser action. The effects of various operating parameters on the temperature profiles (true and brightness) were examined in detail. The fourth chapter describes the laser cladding on a substrate TA6V with powder of the same composition. A thermal imaging camera (3-5 microns) was applied to obtain the temperature distributions in the laser action zone
Chen, Qiang. "Modélisation numérique thermomécanique de fabrication additive par fusion sélective de lit de poudre par laser : Application aux matériaux céramiques." Thesis, Paris Sciences et Lettres (ComUE), 2018. http://www.theses.fr/2018PSLEM004/document.
Full textThe application of SLM process is limited by the difficulty of process control. Its application to ceramics is especially challengeable due to their weak absorption to laser and weak resistance to thermal shock. The mastery of this process requires a full understanding of heat transfer, fluid dynamics in melt pool and solid mechanics. In this work, we propose a numerical model for the simulation of SLM process applied to ceramics. The model is developed at the track scale and with the assumption of continuous powder bed. It is based on level set method and multiphase homogenization, with which we are able to follow the evolution of gas/material interface and phase transformation. Simulations are performed to study the influence of material properties and process parameters on temperature, melt pool shape, fluid dynamics and solid mechanics. Apart from the laser power and scanning speed, material absorption is also found to be important to the thermal behavior and the melt pool shape. With the fluid dynamics, convex shape of track cross section is achieved under surface tension. Besides that, liquid droplets collapsing formed by the melting of powder create melt pool instability when falling, thus leading to track irregularity after solidification. The Marangoni effect, caused by surface tension gradient at gas/material interface, is investigated. Its influence on temperature distribution, melt pool shape and track regularity is recognized. One interesting finding is the smoothing effect of track surface with negative ∂γ/∂T. When combine surface tension with scanning speed, track surface becomes more irregular with the increase of scanning speed. The well-known balling effect is reproduced with high scanning speed. This can be helpful to find the regime for regular track shape with given laser power and scanning speed. Cracking defect is deleterious in additive manufacturing. The use of an auxiliary laser can help to avoid this defect by decreasing the maximum tensile stress. The process mode of this auxiliary laser remains an interesting subject to be studied and some guidelines have been given by the presented simulations. The model is validated by the comparison of melt pool shape with experiments under different process conditions. Simulations can also reveal the tendency of track surface variation for certain cases. By the application to multi-track deposition, the influence of hatch distance on layer surface, temperature and stress evolution is emphasized
Books on the topic "Fusion sélective au laser"
Kunioki, Mima, ed. Laser plasma theory and simulation. Chur, Switzerland: Harwood Academic Publishers, 1994.
Find full textRufer, M. Louise. Laser Program annual report 84. Edited by Murphy Peter W and Lawrence Livermore National Laboratory. [S.l.]: Lawrence Livermore National Laboratory, 1985.
Find full textEnergy, Alberta Alberta. Development of a krypton fluoride laser for fusion energy research. Calgary: Alberta Energy, Scientific and Engineering Services and Research Division, 1986.
Find full textStefan, V. Alexander. Laser thermonuclear fusion: Research review (1963-1983) on generation of suprathermal particles, laser radiation harmonics, and quasistationary magnetic filelds. La Jolla, CA: Stefan University Press, 2008.
Find full textGierszewski, Paul Joseph. Alternate fusion concepts: Status and plans. [Ontario, Canada?: s.n.], 1990.
Find full textYevko, Vladimir. Cladding formation in laser-beam fusion ofmetal powder. Ottawa: National Library of Canada, 1998.
Find full textWang, Di, Yongqiang Yang, Yang Liu, Yuchao Bai, and Chaolin Tan. Laser Powder Bed Fusion of Additive Manufacturing Technology. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-5513-8.
Full textJapan-U, S. Seminar on Physics of High Power Laser Matter Interactions (1992 Kyoto Japan). Japan-U.S. Seminar on Physics of High Power Laser Matter Interactions, Kyoto, Japan, 9-13 March 1992. Singapore: World Scientific, 1992.
Find full textG, Basov N., ed. Heating and compression of thermonuclear targets by laser beam. Cambridge: Cambridge University Press, 1986.
Find full textShalom, Eliezer, and Mima Kunioki, eds. Applications of laser plasma interactions. Boca Raton: Taylor & Francis, 2009.
Find full textBook chapters on the topic "Fusion sélective au laser"
Thyagarajan, K., and Ajoy Ghatak. "Laser-Induced Fusion." In Lasers, 403–15. Boston, MA: Springer US, 2010. http://dx.doi.org/10.1007/978-1-4419-6442-7_16.
Full textSchierenberg, Einhard. "Laser-Induced Cell Fusion." In Cell Fusion, 409–18. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4757-9598-1_19.
Full textLee, James K. W. "Single-Crystal Laser Fusion." In Encyclopedia of Scientific Dating Methods, 1–5. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6326-5_41-1.
Full textKumar, Sanjay. "Laser Powder Bed Fusion." In Additive Manufacturing Processes, 41–63. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-45089-2_3.
Full textYamanaka, C. "Advances in Laser Fusion." In Laser Science and Technology, 293–307. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4757-0378-8_21.
Full textLee, James K. W. "Single-Crystal Laser Fusion." In Encyclopedia of Scientific Dating Methods, 760–63. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-007-6304-3_41.
Full textMcMahon, John M. "Fusion Laser Technology Revisited." In Laser Interaction and Related Plasma Phenomena, 571–79. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4615-7335-7_41.
Full textGebhardt, Andreas, and Alexander Schwarz. "Laser Powder Bed Fusion." In Produktgestaltung für die Additive Fertigung, 85–136. München: Carl Hanser Verlag GmbH & Co. KG, 2019. http://dx.doi.org/10.3139/9783446461338.003.
Full textGebhardt, Andreas, Julia Kessler, and Alexander Schwarz. "Laser Powder Bed Fusion." In Produktgestaltung für die Additive Fertigung, 85–136. München, Germany: Carl Hanser Verlag GmbH & Co. KG, 2019. http://dx.doi.org/10.1007/978-3-446-46133-8_3.
Full textMuraoka, K., K. Uchino, T. Kajiwara, S. Kuroda, T. Okada, and M. Maeda. "Laser-Induced Fluorescence." In Diagnostics for Experimental Thermonuclear Fusion Reactors, 331–40. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-0369-5_39.
Full textConference papers on the topic "Fusion sélective au laser"
Weiss, Maxwell, Samuel Castro Lucas, Aaron Davenport, Sarah Sadler, and Carmen Menoni. "Ultraviolet Interference Coatings for Laser Fusion Drivers." In Frontiers in Optics, JTu4A.19. Washington, D.C.: Optica Publishing Group, 2024. https://doi.org/10.1364/fio.2024.jtu4a.19.
Full textMiley, George H., and Heinrich Hora. "Laser Fusion Propulsion using Extreme CPA-Laser Pulses for Boron Fusion." In ASCEND 2020. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2020. http://dx.doi.org/10.2514/6.2020-4081.
Full textWinterberg, F. "On impact fusion." In LASER INTERACTION AND RELATED PLASMA PHENOMENA. ASCE, 1997. http://dx.doi.org/10.1063/1.53519.
Full textVelarde, G., S. Eliezer, Z. Henis, M. Piera, and J. M. Martinez-Val. "Systematic analysis of advanced fusion fuel in inertial fusion energy." In LASER INTERACTION AND RELATED PLASMA PHENOMENA. ASCE, 1997. http://dx.doi.org/10.1063/1.53521.
Full textLiu, Lizhen, canbing zhao, yifan qi, wenqing hong, haoteng yin, jie wang, and yating li. "A method for dual band infrared image fusion." In Advanced Laser Materials and Laser Technology, edited by Zhenxu Bai, Qidai Chen, and Yidong Tan. SPIE, 2023. http://dx.doi.org/10.1117/12.2652161.
Full textWhite, John V., Eric Leefmans, Gwendolyn Stewart, Daniel T. Dempsey, Mira Katz, and Anthony J. Comerota. "Laser Fusion Tissue Repair With CO 2 Laser." In OE/LASE '89, edited by Kazuhiko Atsumi, Norman R. Goldblatt, and Stephen N. Joffe. SPIE, 1989. http://dx.doi.org/10.1117/12.952025.
Full textEdwards, C. B. "HIPER: THE EUROPEAN PATH TO INERTIAL FUSION ENERGY." In Laser Science. Washington, D.C.: OSA, 2011. http://dx.doi.org/10.1364/ls.2011.lwe2.
Full textKryukov, P. G. "Novel approach to laser inertial fusion-driver construction." In Laser Optics, edited by Artur A. Mak. SPIE, 1994. http://dx.doi.org/10.1117/12.183116.
Full textMerschroth, Holger, Jana Harbig, and Matthias Weigold. "Defect detection based on sensor data fusion of optical monitoring systems in laser based Powder Bed Fusion." In Laser Applications Conference. Washington, D.C.: OSA, 2020. http://dx.doi.org/10.1364/lac.2020.lth1b.3.
Full textKhaydarov, R. T., Carlos Varandas, and Carlos Sliva. "Improved Characteristics of Laser Source of Ions Using a Frequency Mode Laser." In PLASMA AND FUSION SCIENCE: 17th IAEA Technical Meeting on Research Using Small Fusion Devices. AIP, 2008. http://dx.doi.org/10.1063/1.2917020.
Full textReports on the topic "Fusion sélective au laser"
Afeyan, B. B., S. E. Bodner, J. H. Gardner, J. P. Knauer, P. Lee, R. H. Lehmberg, R. L. McCrory, et al. Direct-drive laser fusion: status and prospects. Office of Scientific and Technical Information (OSTI), January 1998. http://dx.doi.org/10.2172/14137.
Full textWharton, K. B. Laser-plasma interactions relevant to Inertial Confinement Fusion. Office of Scientific and Technical Information (OSTI), November 1998. http://dx.doi.org/10.2172/12528.
Full textHeebner, J., and M. Bowers. Pre-Amplifier Module for Laser Inertial Confinement Fusion. Office of Scientific and Technical Information (OSTI), February 2008. http://dx.doi.org/10.2172/926063.
Full textLuhmann, Jr., N. C. Microwave experimental studies of laser fusion: Final report. Office of Scientific and Technical Information (OSTI), January 1989. http://dx.doi.org/10.2172/6276490.
Full textDeri, R. Semiconductor Laser Diode Pumps for Inertial Fusion Energy Lasers. Office of Scientific and Technical Information (OSTI), January 2011. http://dx.doi.org/10.2172/1018822.
Full textCaird, J. A., R. B. Ehrlich, and G. L. Hermes. Precision operation of the Nova laser for fusion experiments. Office of Scientific and Technical Information (OSTI), February 1994. http://dx.doi.org/10.2172/10125508.
Full textMantri, Srinivas, Xuan Zhang, and Wei-Ying Chen. Laser Powder Bed Fusion of Steels for Nuclear Applications. Office of Scientific and Technical Information (OSTI), August 2024. http://dx.doi.org/10.2172/2438497.
Full textKramer, Kevin James. Laser Intertial Fusion Energy: Neutronic Design Aspects of a Hybrid Fusion-Fission Nuclear Energy System. Office of Scientific and Technical Information (OSTI), April 2010. http://dx.doi.org/10.2172/1013210.
Full textMiles, R. R., M. Havstad, M. LeBlanc, A. Chang, I. Golosker, and P. Rosso. Thermal Studies of the Laser Inertial Fusion Energy (LIFE) Target during Injection into the Fusion Chamber. Office of Scientific and Technical Information (OSTI), September 2014. http://dx.doi.org/10.2172/1169850.
Full textAlbright, Brian, Todd Ditmire, Evan Dodd, Juan Fernandez, Donald Gautier, Brian Haines, Chengkun Huang, et al. Fast ignition inertial fusion energy using laser-driven ion beams. Office of Scientific and Technical Information (OSTI), January 2022. http://dx.doi.org/10.2172/1843149.
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