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Atelier LZC --- Brabant, Laurence --- Forte, Duilio --- Groove Design --- Ikebuchi, Koichirio --- Morsi, Cherif --- Ragni, Massimo

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Haller, Hermann --- Lehmann, Kurt --- Breker, Arno --- Maillol, Aristide --- Barlach, Ernst H. --- Roeder, Emy --- Mataré, Ewald --- Albiker, Karl --- Blumenthal, Hermann --- Stadler, Toni --- Geibel, Hermann --- Klein, Jürgen --- Kricke, Norbert --- Szekessy, Zoltan --- Zimmermann, Kurt --- Lehmbruck, Wilhelm --- Beucker, Ivo --- Groove-Marković, Marga --- Stieler, Robert --- Minne, George --- Kolbe, Georg --- Fiori, de, Ernesto --- Gaul, August --- Marcks, Gerhard --- Scheibe, Richard --- Sintenis, Renée --- Wimmer, Hans --- Kollwitz, Käthe

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Primary and secondary solar concentrators are of vital importance for advanced solar energy and solar laser researches. Some of the most recent developments in primary and secondary solar concentrators were firstly presented. A novel three-dimensional elliptical-shaped Fresnel lens analytical model was put forward to maximize the solar concentration ratio of Fresnel-lens-based solar concentrators. By combining a Fresnel lens with a modified parabolic mirror, significant improvement in solar laser efficiency was numerically calculated. A fixed fiber light guide system using concave outlet concentrators was proposed. The absence of a solar tracking structure highlights this research. By shaping a luminescent solar concentrators in the form of an elliptic array, its emission losses was drastically reduced. Simple conical secondary concentrator was effective for thermal applications. New progresses in solar-pumped lasers by NOVA University of Lisbon were presented. By adopting a rectangular fused silica light guide, 40 W maximum solar laser power was emitted from a single Ce:Nd:YAG rod. An aspheric fused silica secondary concentrator and a small diameter Ce:Nd:YAG rod were essential for attaining 4.5 % record solar-to-laser power conversion efficiency. A novel solar concentrator design for the efficient production of doughnut-shaped and top-hat solar laser beams were also reported. More importantly, a novel solar concentrator approach for the emission of 5 kW-class TEM00 mode solar laser beams from one megawatt solar furnace was put forward at the end of this book, revealing promising future for solar-pumped lasers.

Technology: general issues --- History of engineering & technology --- luminescent solar concentrator --- solar spectrum splitter --- power generation in space --- microalgae --- beam merging --- multirod --- Nd:YAG --- solar furnace --- solar flux homogenizer --- solar laser --- TEM00-mode --- solar pumping --- twisted light guide --- top hat --- doughnut-shaped --- nanofluid --- conical concentrator system --- performance comparison --- thermal efficiency --- Fresnel lens --- Gaussian source --- groove number --- solar flux --- optical efficiency --- full width at half maximum --- concentrator --- light guide --- optical fiber solar system --- solar daylighting --- laser --- parabolic mirror --- solar concentrator --- collecting efficiency --- conical solar concentrator --- performance analysis --- solar energy --- Ce:Nd:YAG --- aspherical lens --- side-pumped --- uniformity --- light-guide --- homogenizer --- solar-pumped laser --- laser efficiency

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At present, the manufacturing industry is focused on the production of lighter weight components with better mechanical properties and always fulfilling all the environmental requirements. These challenges have caused a need for developing manufacturing processes in general, including obviously those devoted in particular to the development of thin-walled metallic shapes, as is the case with tubular and sheet metal parts and devices.This Special Issue is thus devoted to research in the fields of sheet metal forming and tube forming, and their applications, including both experimental and numerical approaches and using a variety of scientific and technological tools, such as forming limit diagrams (FLDs), analysis on formability and failure, strain analysis based on circle grids or digital image correlation (DIC), and finite element analysis (FEA), among others.In this context, we are pleased to present this Special Issue dealing with recent studies in the field of tube and sheet metal forming processes and their main applications within different high-tech industries, such as the aerospace, automotive, or medical sectors, among others.

Technology --- Engineering --- micro tube --- hollow sinking --- plastic anisotropy --- surface quality --- size effect --- plasticity --- strength --- metallic tubes --- finite element analysis --- accumulative extrusion bonding --- kinematic bending --- product properties --- local heating --- profile bending --- asymmetric profile --- warping --- superimposed hydrostatic pressure --- shear damage growth --- fracture strain --- finite element analysis (FEA) --- additive manufacturing --- rapid prototyping --- sheet metal forming --- V-bending --- groove pressing --- HA-SPIF --- surface finish --- machine learning --- Ti6Al4V --- R-value --- thickness strain --- digital image correlation --- multi-camera DIC --- non-destructive testing --- single point incremental forming --- tube expansion --- formability --- fracture --- stress-triaxiality --- strain-hardening --- viscoplasticity --- bending --- semi-analytic solution --- Ti-6Al-4V ELI --- superplastic forming --- custom prosthesis --- in vivo tests --- History. --- History. --- micro tube --- hollow sinking --- plastic anisotropy --- surface quality --- size effect --- plasticity --- strength --- metallic tubes --- finite element analysis --- accumulative extrusion bonding --- kinematic bending --- product properties --- local heating --- profile bending --- asymmetric profile --- warping --- superimposed hydrostatic pressure --- shear damage growth --- fracture strain --- finite element analysis (FEA) --- additive manufacturing --- rapid prototyping --- sheet metal forming --- V-bending --- groove pressing --- HA-SPIF --- surface finish --- machine learning --- Ti6Al4V --- R-value --- thickness strain --- digital image correlation --- multi-camera DIC --- non-destructive testing --- single point incremental forming --- tube expansion --- formability --- fracture --- stress-triaxiality --- strain-hardening --- viscoplasticity --- bending --- semi-analytic solution --- Ti-6Al-4V ELI --- superplastic forming --- custom prosthesis --- in vivo tests

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This reprint presents the current state of knowledge and the latest advances in the development of microstructure and material properties using modern FSP (Friction Stir Processing) and related technologies such as FSW (Friction Stir Welding). The chapters of this reprint contain valuable results of research on changes in the microstructure and properties of materials caused by the use of the above technologies. Detailed analysis of these results allowed for the formulation of constructive conclusions of scientific and technological importance. The issues described in here present a significant cognitive and application potential and indicate the problems and implementation challenges faced by users of FSP and related technologies.

Technology: general issues --- stir casting --- boron carbide --- silicon carbide --- AA6061 aluminium alloy --- tensile strength --- friction stir welding --- bobbin tool --- AA1050-H14 --- pin geometry --- travel speed --- welding temperature --- mechanical properties --- groove joint design --- gas tungsten arc welding --- 2205 DSS --- friction stir lap welding --- definitive screening design (DSD) --- tensile shear load --- tool penetration depth --- plunge depth --- friction stir deposition --- solid-state additive manufacturing --- AA2011-T6 and AA2011-O --- AA2011 aluminum alloy --- microstructure --- intermetallics --- hardness --- Friction stir spot welding --- low-carbon steel --- brass --- load-carrying capacity --- dissimilar friction stir welding --- tool penetration depth (TPD) --- intermetallic compound (IMC) thickness --- process parameter --- friction stir processing --- 7075 aluminum alloy --- air cooling --- jet cooling nozzle --- microstructure evolution --- tribological properties --- aluminum alloys --- AA6082 --- friction stir spot welding --- stir casting --- boron carbide --- silicon carbide --- AA6061 aluminium alloy --- tensile strength --- friction stir welding --- bobbin tool --- AA1050-H14 --- pin geometry --- travel speed --- welding temperature --- mechanical properties --- groove joint design --- gas tungsten arc welding --- 2205 DSS --- friction stir lap welding --- definitive screening design (DSD) --- tensile shear load --- tool penetration depth --- plunge depth --- friction stir deposition --- solid-state additive manufacturing --- AA2011-T6 and AA2011-O --- AA2011 aluminum alloy --- microstructure --- intermetallics --- hardness --- Friction stir spot welding --- low-carbon steel --- brass --- load-carrying capacity --- dissimilar friction stir welding --- tool penetration depth (TPD) --- intermetallic compound (IMC) thickness --- process parameter --- friction stir processing --- 7075 aluminum alloy --- air cooling --- jet cooling nozzle --- microstructure evolution --- tribological properties --- aluminum alloys --- AA6082 --- friction stir spot welding