Abstract: The invention relates to a rolled product made of aluminum alloy with a thickness of at least 50 mm comprising (in weight %): Zn 6.9-7.5; Mg 1.8-2.2; Cu 1.8-2.2, where the sum Cu+Mg is between 3.8 and 4.2; Zr 0.04-0.14; Mn 0-0.1; Ti 0-0.15; V 0-0.1; Fe?0.15; If ?0.15; impurities ?0.05 each and ?0.15 total, balance aluminum. The invention also relates to the method of manufacturing such a product. The products according to the invention are particularly advantageous because they have a very favorable compromise between static mechanical strength, toughness and environmental-assisted cracking performance under conditions of high stress and humid environment.

Abstract: The invention relates to a method for manufacturing an aluminum alloy sheet, wherein an aluminum alloy is prepared with the following composition, in wt %: Mg: 4.0-5.2, Mn: 0.40-1.0, Zn: 0.15-0.40, at least one element selected from Ti, Cr, Cu and Zr, the content of the element, if selected, being 0.01-0.15 for Ti, 0.05-0.25 for Cr, 0.02-0.25 for Cu, 0.05-0.25 for Zr, Fe: <0.40, Si: <0.40, other elements or impurities<0.05 each and<0.15 in total, the remainder being aluminum. A rolling plate is cast by vertical semi-continuous casting, and said optionally homogenised plate is hot-rolled in two successive stages to obtain a sheet. The sheets obtained by the method according to the invention are advantageous, in particular for shipbuilding, since they demonstrate, after being exposed for 7 days to a temperature of 100° C., a weight loss of less than 15 mg/cm2 during a corrosion test according to the ASTM G67 standard.

Abstract: The invention relates to a wrought product such as an extruded, rolled and/or forged aluminum alloy-based product, comprising, in weight %: Cu: 3.0-3.9; Li: 0.8-1.3; Mg: 0.6-1.0; Zr: 0.05-0.18; Ag: 0.0-0.5; Mn: 0.0-0.5; Fe+Si?0.20; Zn?0.15; at least one element from among: Ti: 0.01-0.15; Sc: 0.05-0.3; Cr: 0.05-0.3; Hf: 0.05-0.5; other elements ?0.05 each and ?0.15 total, remainder aluminum. The invention also relates to the process for producing said product. The products according to the invention are particularly useful in the production of thick aluminum products intended for producing structural elements in the aeronautical industry.

Abstract: A process for manufacturing a bimetallic part by means of a first component formed by a first aluminum alloy and a second component formed by a second aluminum alloy, said process involving: assembling the first component and the second component to obtain an assembled part; applying a thermal treatment to the assembled part at a temperature of 100 to 250° C., the thermal treatment causing the assembled part to deform, in particular as a result of a metallurgical deformation by a precipitation of hardening phases of the first component and/or the second component; cooling the part to ambient temperature, upon which the part remains deformed. The process involves, prior to the assembling step, an estimation of the degree of deformation that the assembled part will undergo under the effect of the thermal treatment.

Abstract: The invention relates to a rolled product made of aluminum alloy with a thickness of at least 50 mm comprising (in weight %): Zn 6.9-7.5; Mg 1.8-2.2; Cu 1.8-2.2, where the sum Cu+Mg is between 3.8 and 4.2; Zr 0.04-0.14; Mn 0-0.1; Ti 0-0.15; V 0-0.1; Fe?0.15; If?0.15; impurities ?0.05 each and ?0.15 total, balance aluminum. The invention also relates to the method of manufacturing such a product. The products according to the invention are particularly advantageous because they have a very favorable compromise between static mechanical strength, toughness and environmental-assisted cracking performance under conditions of high stress and humid environment.

Abstract: A fabric cutting system and/or method can include a mandrel having a body and first and second legs, a chuck, the chuck configured to receive either one of the legs or body to rotatingly support the mandrel. The mandrel can be rotated and the fabric mounted on the mandrel can be cut about the leg at a location beyond the end of the other leg. One of the legs can include a leg extension removable from a leg base that when removed allows the other leg to be cut beyond the end of the leg base. The fabric can be cut with a cutting laser, which may be a multi-axis laser, and/or have low power.

Abstract: The invention relates to the method for manufacturing a rolled product of variable thickness made of heat-treatable aluminum alloy in which hot rolling is performed to achieve a variation in thickness of at least 10% lengthwise between the thickest part and the thinnest part; the rolled product of variable thickness obtained undergoes solution heat-treatment and quenching with permanent set of at least 1% in the thickest part before natural or artificial ageing. The products obtained according to the invention exhibit improved mechanical strength of at least 5% in the thinnest part and improved fracture toughness of at least 15% in the thickest part. The products according to the invention are notably useful in the fabrication of aircraft upper or lower wing skins the “buy to fly” ratio and the properties are simultaneously improved.

Abstract: An extruded product made of an alloy containing aluminum comprising 4.2 wt % to 4.8 wt % of Cu, 0.9 wt % to 1.1 wt % of Li, 0.15 wt % to 0.25 wt % of Ag, 0.2 wt % to 0.6 wt % of Mg, 0.07 wt % to 0.15 wt % of Zr, 0.2 wt % to 0.6 wt % of Mn, 0.01 wt % to 0.15 wt % of Ti, a quantity of Zn less than 0.2 wt %, a quantity of Fe and Si less than or equal to 0.1 wt % each, and unavoidable impurities with a content less than or equal to 0.05 wt % each and 0.15 wt % in total is disclosed. The profiles according to the invention are particularly useful as fuselage stiffeners or stringers, circumferential frames, wing stiffeners, floor beams or profiles, or seat tracks, notably owing to their improved properties in relation to those of known products, in particular in terms of energy absorption during an impact, static mechanical strength and corrosion resistance properties and their low density.

Abstract: A fabric cutting system and/or method can include a mandrel having a body and first and second legs, a chuck, the chuck configured to receive either one of the legs or body to rotatingly support the mandrel. The mandrel can be rotated and the fabric mounted on the mandrel can be cut about the leg at a location beyond the end of the other leg. One of the legs can include a leg extension removable from a leg base that when removed allows the other leg to be cut beyond the end of the leg base. The fabric can be cut with a cutting laser, which may be a multi-axis laser, and/or have low power.

Abstract: A fabric cutting system and/or method can include a mandrel having a body and first and second legs, a chuck, the chuck configured to receive either one of the legs or body to rotatingly support the mandrel. The mandrel can be rotated and the fabric mounted on the mandrel can be cut about the leg at a location beyond the end of the other leg. One of the legs can include a leg extension removable from a leg base that when removed allows the other leg to be cut beyond the end of the leg base. The fabric can be cut with a cutting laser, which may be a multi-axis laser, and/or have low power.

Abstract: The method performed by the apparatus includes interconnecting a first file system managing unit 310 between the plurality of client computers 100 and the second file system managing unit 410, creating a first directory /root in a first file system managed by the first file system managing unit 310, associating a first directory /root of the second file system with the first directory /root of the first file system, enabling on-demand virtualization of the second file system by the first file system managing unit 310 based on client requests received from the client computers 100 at the first file system managing unit 310 and based on the association between the first directory of the first file system and the first directory of the second file system, and enabling indirect client access to the second file system through the first file system.

Abstract: The present invention relates to a method and an apparatus for data migration of a first file system in a data storage system comprising a plurality of client computers 100, a first file system managing unit 310 for managing the first file system and being connected to the plurality of client computers 100, and a second file system managing unit 410 for managing a second file system and being connected to the first file system managing unit 310, the second file system comprising a plurality of data files and the first file system comprising a plurality of external link objects, each external link object of the first file system being associated with a respective data file of the second file system for enabling client access to the respective data file of the second file system.

Abstract: The method and an apparatus provides a virtualized file system enabling indirect access to a second file system in a data storage system comprising a plurality of client computers 100 and a second file system managing unit 410 for managing the second file system and enabling client access to the second file system, the method comprising interconnecting a first file system managing unit 310 between the plurality of client computers 100 and the second file system managing unit 410, creating a directory /root in a first file system managed by the first file system managing unit 310, a directory /root of the second file system with the directory /root of the first file system, enabling on-demand virtualization of the second file system by the first file system managing unit 310 based on client requests received from the client computers 100 at the first file system managing unit 310.

Abstract: The present invention relates to a method and an apparatus for data migration of a first file system in a data storage system comprising a plurality of client computers 100, a first file system managing unit 310 for managing the first file system and being connected to the plurality of client computers 100, and a second file system managing unit 410 for managing a second file system and being connected to the first file system managing unit 310, the second file system comprising a plurality of data files and the first file system comprising a plurality of external link objects, each external link object of the first file system being associated with a respective data file of the second file system for enabling client access to the respective data file of the second file system.

Abstract: A fabric cutting system and/or method can include a mandrel having a body and first and second legs, a chuck, the chuck configured to receive either one of the legs or body to rotatingly support the mandrel. The mandrel can be rotated and the fabric mounted on the mandrel can be cut about the leg at a location beyond the end of the other leg. One of the legs can include a leg extension removable from a leg base that when removed allows the other leg to be cut beyond the end of the leg base. The fabric can be cut with a cutting laser, which may be a multi-axis laser, and/or have low power.

Abstract: The method performed by the apparatus includes interconnecting a first file system managing unit 310 between the plurality of client computers 100 and the second file system managing unit 410, creating a first directory /root in a first file system managed by the first file system managing unit 310, associating a first directory /root of the second file system with the first directory /root of the first file system, enabling on-demand virtualization of the second file system by the first file system managing unit 310 based on client requests received from the client computers 100 at the first file system managing unit 310 and based on the association between the first directory of the first file system and the first directory of the second file system, and enabling indirect client access to the second file system through the first file system.

Abstract: The method and an apparatus provides a virtualized file system enabling indirect access to a second file system in a data storage system comprising a plurality of client computers 100 and a second file system managing unit 410 for managing the second file system and enabling client access to the second file system, the method comprising interconnecting a first file system managing unit 310 between the plurality of client computers 100 and the second file system managing unit 410, creating a directory /root in a first file system managed by the first file system managing unit 310, a directory /root of the second file system with the directory /root of the first file system, enabling on-demand virtualization of the second file system by the first file system managing unit 310 based on client requests received from the client computers 100 at the first file system managing unit 310.

Abstract: The method and an apparatus provides a virtualized file system enabling indirect access to a second file system in a data storage system comprising a plurality of client computers 100 and a second file system managing unit 410 for managing the second file system and enabling client access to the second file system, the method comprising interconnecting a first file system managing unit 310 between the plurality of client computers 100 and the second file system managing unit 410, creating a directory /root in a first file system managed by the first file system managing unit 310, a directory /root of the second file system with the directory /root of the first file system, enabling on-demand virtualization of the second file system by the first file system managing unit 310 based on client requests received from the client computers 100 at the first file system managing unit 310.

Abstract: The invention relates to the method for manufacturing a rolled product of variable thickness made of heat-treatable aluminum alloy in which hot rolling is performed to achieve a variation in thickness of at least 10% lengthwise between the thickest part and the thinnest part; the rolled product of variable thickness obtained undergoes solution heat-treatment and quenching with permanent set of at least 1% in the thickest part before natural or artificial ageing. The products obtained according to the invention exhibit improved mechanical strength of at least 5% in the thinnest part and improved fracture toughness of at least 15% in the thickest part. The products according to the invention are notably useful in the fabrication of aircraft upper or lower wing skins the “buy to fly” ratio and the properties are simultaneously improved.

Abstract: The present invention relates to a method and an apparatus for data migration of a first file system in a data storage system comprising a plurality of client computers 100, a first file system managing unit 310 for managing the first file system and being connected to the plurality of client computers 100, and a second file system managing unit 410 for managing a second file system and being connected to the first file system managing unit 310, the second file system comprising a plurality of data files and the first file system comprising a plurality of external link objects, each external link object of the first file system being associated with a respective data file of the second file system for enabling client access to the respective data file of the second file system.