摘要:
A repair for a structural element made from a composite material includes a bracket defining a first surface and a second surface. The first surface is adapted for facing the structural element. A chamfer is located on a first end of the bracket. An angle is defined between a plane of the chamfer and a plane of the first surface, the first surface of the bracket being adapted to be disposed adjacent to a side of the structural element. The repair also includes a sealant material between the bracket and the structural element, where the sealant material occupies a space established between the chamfer and the structural element.
摘要:
The invention provides improvements to electrofusion fitting methods that allow for continuity and repeatability of welds between an electrofusion fitting and a pipe lining (or stand-alone pipe). An electrofusion fitting for joining sections of lined pipe has heating elements configured to create at least one weld between the electrofusion fitting and a pipe lining, however prior to the weld step taking place the electrofusion fitting is heated and expands accordingly to ensure contact with the pipe lining. Preheating the electrofusion fitting also provides a predetermined starting temperature for the fitting and the lining which results in improved fusion cycle reliability. Furthermore, the need for clamps or support frames to support the electrofusion fitting in situ is removed, with corresponding reductions in cycle times, complexity, and hence cost.
摘要:
A method of applying protective sheeting (12) of polymer material to a pipeline (P), preferably on a J-lay rig, includes the steps of driving a carriage along an annular path about the pipeline (P); extruding and simultaneously winding the protective sheeting (12) about the pipeline (P) by means of an end extrusion die (47) fitted to the carriage; compressing the protective sheeting (12) on the pipeline (P), directly downstream from the end extrusion die (47), so the protective sheeting (12) adheres to the pipeline (P); and controlling the drive, extrusion, and compression steps so that the time lapse between expulsion of a cross section (SI) of protective sheeting (12) from the end extrusion die (47) and compression of the same cross section (SI) of protective sheeting (12) is less than one second.
摘要:
The present disclosure relates to dialyzers comprising laser-welded joints and to a process for the production of capillary dialyzers which employs laser welding.
摘要:
There is provided a laminate (3) for joining parts (1, 2) of composite material that comprises: • a first layer (3.1) of adhesive material, • a second layer (3.2) of preimpregnated composite material, adjacent to the first layer (3.1), and • a third layer (3.3) of adhesive material, adjacent to the second layer (3.2), and
a method for joining at least two parts (1, 2) of composite material with a laminate (3) according to claim 1, comprising the steps of: • providing already cured composite material parts (1, 2), • positioning the laminate (3) for joining between the two cured parts (1, 2), • applying pressure and temperature to the whole structure comprising the at least two parts (1, 2) and the laminate (3), in such a way that the laminate (3) is cured and the at least two parts (1, 2) are joined together in a resulting structure.
摘要:
An airfoil includes at least one precured composite spar (66, 68) having a web (82, 88) and at least one flange or cap (84, 86, 90, 92) integrated with an end of the web. A precured composite skin (74, 76) is attached to the spar by adhesive bonding the skin to the flange.
摘要:
An object is to provide a gas container and a method of producing the gas container in which liner constituting members can appropriately be joined to each other and productivity can be improved. A gas container has a resin liner constituted by joining a plurality of liner constituting members, the liner constituting members each having at least a hollow cylindrical part, and a reinforcement layer arranged on an outer periphery of the resin liner. Joining portions of the liner constituting members are joined to each other over a circumferential direction by laser welding, and the joining portions are made of a laser transmitting resin and a laser absorbing resin, respectively.
摘要:
Moulding material comprising at least one dry fibrous reinforcement layer having a surface resin material conjoined to a first surface thereof and a structural resin material conjoined to a second surface thereof wherein the structural resin material is provided with a recess which is free from resin and is located at the edge of the structural resin layer and wherein the dry fibrous reinforcement layer provides a venting structure to allow entrapped air to pass out during processing. The material of the present invention can be used to form a composite which can be used as a surface coating for large components such as wind turbines.