摘要:
A system including a dual cure composite structure is disclosed. The system also includes a first layer comprising a resin having a first and a second functional group. The system further includes a second layer comprising the resin having the first and the second functional group. The system also includes a third layer comprising the resin having the first and the second functional group. The system further includes a first covalent bond across an interface of the first and the second layer and a second covalent bond across another interface of the second and the third layer. The system further includes more than two layers comprising the resin having the first and second functional group. A method of manufacturing a system including a dual cure composite structure is also disclosed. The method includes providing a first layer comprising a resin having a first functional group and a second functional group. The method also includes applying a first curing source to partially cure the first layer. The method further includes providing a second layer comprising the resin having the first and the second functional group onto the first layer and applying a second curing source to fully cure the first layer and partially cure the second layer simultaneously.
摘要:
A system including a dual cure composite structure is disclosed. The system also includes a first layer comprising a resin having a first and a second functional group. The system further includes a second layer comprising the resin having the first and the second functional group. The system also includes a third layer comprising the resin having the first and the second functional group. The system further includes a first covalent bond across an interface of the first and the second layer and a second covalent bond across another interface of the second and the third layer. The system further includes more than two layers comprising the resin having the first and second functional group. A method of manufacturing a system including a dual cure composite structure is also disclosed. The method includes providing a first layer comprising a resin having a first functional group and a second functional group. The method also includes applying a first curing source to partially cure the first layer. The method further includes providing a second layer comprising the resin having the first and the second functional group onto the first layer and applying a second curing source to fully cure the first layer and partially cure the second layer simultaneously.
摘要:
A composition includes a first cylcoolefin substituted with at least one epoxy group and an aromatic amine. The composition is capable of bonding to a filler having a corresponding binding site. The composition is compatible with a metathesis catalyst capable of catalyzing a ring-opening metathesis polymerization reaction when contacted with the first cycloolefin. An associated method is also provided.
摘要:
A method of assembling a wind turbine blade comprises providing a first blade segment comprising at least two first spar cap segments; providing a second blade segment comprising at least two second spar cap segments; inserting the second blade segment into the first blade segment wherein a spar cap cavity is formed between each set of corresponding first and second spar cap segments; injecting an adhesive into the spar cap cavities to bond the blade segments together, wherein a scarf joint is formed between each set of corresponding first and second spar cap segments.
摘要:
A composition includes a polymer precursor and a coupling agent composition capable of bonding to a filler having a corresponding binding site. The polymer precursor includes cycloolefin and the coupling agent has at least one functional group that is an epoxy, an amine, an imine, a thiol, a carboxylic acid, a cyanato, a carboxylic acid anhydride, a cyano group, or a silane group. A method to make the composition is also provided.
摘要:
A method for manufacturing a multi-resin composite article is provided. The method comprises providing at least one fiber preform in a mold; injecting a plurality of resins into the at least one fiber preform at a plurality of locations on the at least one fiber preform; and forming at least one transition region along a mutual contact surface between the resins. Each of the at least one transition regions is defined by a gradual transition in composition from one of the resins to another of the resins. A multi-resin composite article is also provided. The article comprises: at least one fiber preform; a plurality of resins, wherein the at least one fiber preform is infused with the resins; and at least one transition region extending along a mutual contact surface between respective ones of the resins. A system for manufacturing such a multi-resin composite article is also provided.
摘要:
A fan blade includes a metal airfoil having a pocket disposed in a first side thereof, with the pocket including a filler bonded thereto. The pocket includes a plurality of cells separated by corresponding ribs which are submerged in the filler.
摘要:
A noise reducer for a rotor blade of a wind turbine and a rotor blade assembly are disclosed. The rotor blade assembly includes a rotor blade having exterior surfaces defining a pressure side, a suction side, a leading edge and a trailing edge each extending between a tip and a root. The rotor blade further defines a span and a chord. The rotor blade assembly further includes a noise reducer configured on the rotor blade. The noise reducer includes a plurality of rods each having a body extending between a first end and a second end. The body of each of the plurality of rods contacts and extends parallel to the body of a neighboring rod of the plurality of rods when the noise reducer is in a stable position.
摘要:
Polymer-based materials and processes suitable for producing panels, for example, panels for use in a fan shroud abradable seal of a turbofan engine. Such a process includes introducing constituents of an expandable foam material into a continuous forming apparatus that continuously compounds the constituents into a partially-cured compounded polymeric material, which is then continuously formed with the continuous forming apparatus to produce a continuous form having a constant cross-sectional shape transverse to a continuous forming direction of the continuous forming apparatus. A portion of the continuous form is then deformed to produce a preform, and the preform is cured within a restricted volume to cause the preform to expand and produce the panel.
摘要:
A turbine blade includes at least two blade segments. Each blade segment includes first and second shells joined together, a base region, at least one joint region including a mating face. Each of the first and second shells includes an outer skin, a base spar cap attached to an inner surface of the outer skin in the base region, a joint spar cap attached to the inner surface of the outer skin in the joint region and adjacent to at least a portion of the base spar cap. The joint spar cap includes holes in the mating face of the joint region. The turbine blade further includes fasteners within the holes for securing the at least two blade segments together.