A composite material includes a laminate in which fiber sheets are laminated. The laminate has a bendable portion that is to be bent along a mold. In a region of the laminate from an end edge on a bent side to the bendable portion, the laminate is divided into layers along a plate thickness direction of the laminate.

Items may be packaged for shipping or storage using additive manufacturing techniques, also known as three dimensional (3-D) printing. Packages made by such processes may be referred to as 3-D printed packages. The 3-D printed packages may be customized based on one or more items contained in the package, a recipient of the package, a sender of the package, and/or a destination location of the package. The customizations may include two-dimensional and/or three-dimensional customizations on an interior and/or exterior of the 3-D printed packages.

A pipe fitting having a first body and a second body that together at least partially define a fluid flow passage. The first body defines a first portion of the fluid flow passage that extends from a first end of the fluid flow passage to a first internal opening. The second body defines a second portion of the fluid flow passage that extends from a second internal opening to a second end of the fluid flow passage. The first body has a first interface surface that surrounds the first internal opening, the first interface surface having a plurality of anti-rotation grooves. The second body has a second interface surface that surrounds the second internal opening and engages with the first interface surface. The first internal opening is in fluid communication with the second internal opening. The second interface surface has a plurality of anti-rotation fingers that are each received by and engage with a corresponding one of the anti-rotation grooves. Rotation of the second body relative to the first body is resisted by the engagement of the anti-rotation fingers with the anti-rotation grooves.

A method for manufacturing a joined body according to an embodiment of the present disclosure is a method for manufacturing a joined body in which composite materials in which fibers are impregnated with resins are heated and joined to each other. The method includes: a step of aligning the composite material with each of a plurality of molding dies, heating the molding dies, and semi-curing the resins of the composite materials; and a step of joining the composite materials to each other by combining and heating the molding dies with which the composite materials are aligned after semi-curing the resins of the composite materials. The molding dies used when semi-curing the resins of the composite materials and the molding dies used when joining the composite materials to each other are the same.

An object of the present invention is to provide a rotor blade which is excellent in lightweight, stiffness, fatigue characteristics, and dimensional accuracy, and especially excellent in fatigue characteristics, that is, durability, and a main object of the present invention is to provide a rotor blade including at least: a component [A] described below constituting a skin which is a surface layer of the rotor blade; and a component [B] described below constituting a core which is an interior of the skin, wherein the component [B] is enclosed in the component [A] at least in a cross-section taken at the center of the distance between a central axis at the time of rotation and a tip of the rotor blade: Component [A]: a continuous fiber base material including continuous reinforcing fibers and a matrix resin; Component [B]: a porous body including reinforcing fibers and a resin, the reinforcing fiber having a mass mean fiber length of 1 mm or more and 15 mm or less and forming voids by bonding through the resin.

The purpose of the present invention is to provide a sandwich structure that has both excellent heat dissipation properties and excellent mechanical properties. In order to achieve this purpose, the sandwich structure of the present invention has the following structure. The sandwich structure includes a core member (I), and a fiber reinforced member (II) disposed on both sides of the core member (I), wherein the core member (I) includes a sheet-shaped heat conductive member (III) having an in-plane thermal conductivity of 300 W/m.Math.K or more.

The purpose of the present invention is to provide a sandwich structure that has both excellent heat dissipation properties and excellent mechanical properties. In order to achieve this purpose, the sandwich structure of the present invention has the following structure. The sandwich structure includes a core member (I), and a fiber reinforced member (II) disposed on both sides of the core member (I), wherein the core member (I) includes a sheet-shaped heat conductive member (III) having an in-plane thermal conductivity of 300 W/m.Math.K or more.

A method for producing a rubber-plastic composite, including the steps of (a) shaping an unvulcanized elastomer, (b) partially vulcanizing the shaped elastomer at a temperature of at least 140 C. up to a degree of vulcanization in the range from 10% to 40%, (c) cooling the partially vulcanized elastomer to a temperature of less than 100 C. within less than 20 minutes, (d) overmolding the partially vulcanized elastomer with a plastic, and (e) heat treating the partially vulcanized elastomer overmolded with a plastic at a temperature in the range from 100 C. to 170 C. for a duration of from 5 minutes to 5 hours to complete the vulcanization and form a rubber-plastic composite. The method further relates to a rubber-plastic composite obtainable by the method according to the invention and also to a shoe comprising the rubber-plastic composite obtainable by the method according to the invention.

Systems and methods for manufacturing stiffened composite structures comprise a plurality of hollow airtight structures and curable material applied to outer surfaces of the plurality of hollow airtight structures. The plurality of hollow airtight structures are positioned in a predetermined arrangement relative to each other to define an assembly. The assembly is enclosed in a rigid outer mold and is cured within the rigid outer mold. After the assembly is cured, the plurality of hollow airtight structures and the curable material form the stiffened composite structure having an integrated internal stiffening structure.

Methods and apparatus for molding and joining composite parts are disclosed herein. An example method includes positioning a base mandrel over a tool base, laying up plies of material over the base mandrel and the tool base to form a support structure base layup, curing the support structure base layup to form a support structure base, removing the support structure base from the tool base and the base mandrel, and configuring the support structure base to be a first support structure for use with a first radar assembly or a second support structure for use with a second radar assembly.