摘要:
There is provided a cap capable of achieving enhanced safety by inhibiting the occurrence of sparks thereinside even if a lightning current has flowed through a fastener, a fastening structure using the same, and an aircraft including the fastening structure. A cap (27) according to the present invention is attached so as to cover a portion of a fastener (15) that couples an upper skin (3) of an aircraft and a stringer (11) located inside the upper skin (3), the portion projecting through the stringer (11), wherein an outer surface (33) of the cap that comes into contact with an interior space of the upper skin (3) is a curved surface, and the cap is made of a conductive material.
摘要:
Provided are a method for molding a composite material, whereby the occurrence of temperature unevenness in the composite material during heating is reduced, a composite material, a pressing head, and a device for molding a composite material. The method for molding a composite material has an electroconductive wire-shaped material arranging step and a magnetic field application step. The electroconductive wire-shaped material arranging step comprises arranging, in an unreacted composite material 10 having reinforcing fibers 12, a plurality of electroconductive wire-shaped materials 16 at an interval wider than the interval between the reinforcing fibers 12 along a direction intersecting with the reinforcing fibers 12 in the plane in which the reinforcing fibers 12 are aligned. The magnetic field application step comprises applying a magnetic field 42 in a direction intersecting with the plane in which the reinforcing fibers 12 are aligned.
摘要:
Provided are an adhesive that makes it possible to bond thermoplastic resins to each other in a short time and to obtain excellent adhesive strength, a structure bonded by this adhesive, and a bonding method using this adhesive. The adhesive bonds a first member (11) containing a thermoplastic resin or a thermoplastic resin reinforced by carbon fibers and a second member (12) containing this thermoplastic resin or this thermoplastic resin reinforced by carbon fibers. The adhesive has a thermoplastic resin as the base material and contains a metallic nano material that generates heat by absorbing electromagnetic waves, in this base material.
摘要:
Provided is a method for bonding composite materials together in which bonding regions are suitably put into a semi-cured state and the composite materials are efficiently bonded together while the quality of the bonding strength of the composite materials is suitably maintained. The method for bonding a first composite material and a second composite material together includes the following respective steps. In step S12, a first bonding region of the first composite material is prepared to be maintained in a softened state. In step S14, a first non-bonding region of the first composite material is heated to be put into a cured state. In step S16, the first bonding region is put into a heatable state. In step S18, the first bonding region is heated to be put into a semi-cured state. In step S32, the first bonding region having been put into the semi-cured state is pressed in contact with a second bonding region of the second composite material that becomes a softened state or a semi-cured state. In step S34, the first bonding region and the second bonding region having been brought into contact with each other and pressed in the contacting and pressing step are heated to be put into a cured state.
摘要:
A cap (9) is applied to a securing structure part (1) for securing structure elements (3, 3) using a fastener (5) passed through through-holes (3a) formed in the structure elements (3, 3), and a collar (7) fastened to the tip part (5a) of the fastener (5), and is mounted in a non-engaged state to the tip part (5a) of the fastener (5) and the collar (7). A filler engaging part (91) for engaging with a cured filler (11), said engaging part (91) configured with a female thread that turns about a center axis (CL), is formed on the inner peripheral surface (9e) of the cap (9). The filler engaging part (91) is provided with: a first helical engagement part (91a) formed in the region near the cap inner part of the inner peripheral surface (9e) in the center axis (CL) direction; and a second helical engagement part (91b) formed in the region near the cap opening-end part (9a) in the center axis (CL) direction, the inner diameter of the second helical engagement part (91b) being greater than that of the first helical engagement part (91a), and having a helical direction that is opposite to that of the first helical engagement part (91a).
摘要:
In order to simplify the equipment for heating a thermosetting resin or a thermoplastic resin and to reduce manufacturing costs of a molded resin article by saving energy, this resin composite material (1A-1I) is formed by combining a fibrous reinforcing material (2) and a thermosetting or thermoplastic matrix resin (3), wherein a metal nanomaterial (4) which self-heats after absorbing electromagnetic waves is added to the matrix resin (3). The frequency of the electromagnetic waves is preferably within the range of 3 MHz to 3 GHz. The metal nanomaterial (4) is preferably nanofibers or nanocoils, and the material is preferably platinum or gold.
摘要:
A system and method detects within an IP network an offending network device that has been adversely affecting the IP network performance. A discovery protocol frame is propagated to successive network switches and is formed as a field having a query for inquiring within each network switch to which the frame is propagated whether the network switch has a database entry regarding the MAC address and switch port for the offending network device to locate the offending network device. This discovery protocol frame includes a command for any network switch that has the offending network device connected thereto to disable the switch port to which the offending network device is connected or block all data traffic from the MAG address of the offending network device.
摘要:
This inspection device comprises an infrared acquisition unit for acquiring infrared light detected by an infrared camera for detecting infrared light from an inspected object that includes an electroconductive member, an intensity-determining unit for determining the detection intensity of the infrared light, and a scratch-determining unit for determining whether or not there is a scratch on the electroconductive member on the basis of the detection intensity of the infrared light.
摘要:
Problem Erosion damage that occurs to wind turbine blades is suppressed, and excellent lightning resistance performance is achieved. Solving Means A wind turbine blade includes a blade main body and a leading edge protector. The leading edge protector includes a conductive material and covers a leading edge of the blade main body. The leading edge protector is also electrically connected to at least one of a down conductor disposed in a hollow space enclosed by a skin in the blade main body and a conductive mesh member provided along an outer surface of the skin.