87 results about "Carbon fiber reinforced polymers" patented technology

Application of carbon fiber reinforced polymer structures to metal vehicle wheels is effective in reducing the mass of the wheel while retaining suitable stiffness in the wheel structure. For maximum effect the reinforced polymer structure and the metal wheel must operate cooperatively. Because of the wide range of operating temperatures experienced by wheels and the large difference in coefficient of thermal expansion between metals and carbon fiber reinforced composites attachment of the polymer structure to the wheel by adhesive alone is problematical. However a wheel with an effective and durable reinforcement may be fabricated by confining, through mechanical interference, the reinforced polymer in a cavity in or on the spoke and by preheating the wheel before curing the polymer.

An insole assembly for use in footwear is provided. The insole assembly generally includes a full-length insole base made of a flexible and resilient material (e.g., resiliently compressible foam), and a heel cap made of a generally rigid material (e.g., a carbon fiber reinforced polymer) which is attached to the insole base and mimics the contours thereof to provide proper biomechanical support of the heel and arch areas of a foot in a particularly lightweight and sleek form factor.

A manufactured component, method and apparatus for advanced manufacturing that includes a nozzle for extruding a working material, wherein the polymeric working material includes a carbon fiber reinforced polymer. The build of the component takes place on a work surface at atmospheric temperatures.

A test apparatus used for simulating debonding between a carbon fiber reinforced polymer (CFRP) and concrete in a CFRP-strengthened structure consists of a primary structural block, a secondary structural block, an adjustable hanger, a receiving slot, an attachment mechanism, a pull-off disk, a connecting plate having a plurality of rods. The adjustable hanger and the secondary structural block are slidably positioned into the receiving slot that traverses into a structural body of the primary structural block. The adjustable hanger is mainly used during double-shearing tests and mixed-mode tests, wherein both shearing and peeling is analyzed in mixed-mode tests. The secondary structural block is used in double-shear tests, mixed-mode tests, single-shear tests, tension pull-off tests, and beam-bend tests. The attachment mechanism, which holds the primary structural block, the secondary structural block, and the adjustable hanger together, is also used during single-shear tests and beam-bend tests.

The invention discloses a non-delamination drilling method based on drilling force control for a carbon fiber reinforced polymer (CFRP) laminate. In the method, in a process of drilling a carbon fiber reinforced polymer (CFRP) laminate with a drill bit, the drilling axial force of the drill bit is controlled to be always smaller than a drilling delamination critical thrust value Fa, wherein Fa is determined by the following steps of: establishing a delamination stable state equation of the CFRP laminate; establishing a polar equation of a small-deflection sheet and a CFRP laminate defection formula of the drill bit during drilling to evaluate the maximum deflection value X of the CFRP laminate; establishing a bending deformation energy formula of the CFRP laminate during drilling, and evaluating the bending deformation energy U of the CFRP laminate during drilling of the drill bit; and determining a drilling delamination critical thrust value Fa according to the evaluated maximum deflection X, the bending deformation energy U and the established delamination stable state equation of the CFRP laminate. Due to the adoption of the method, non-delamination drilling processing of the CFRP laminate is realized, the delamination damage defect of drilling is avoided, the product quality is improved, the cost is lowered, and the efficiency is increased.

The invention provides an electric vehicle charger air-cooling system conducting precooling through chilled water and a control method of the electric vehicle charger air-cooling system. The system comprises a cabinet, wherein a lower back plate of the cabinet is provided with an air inlet, and an upper front face plate of the cabinet is provided with an air outlet; an air inlet fan and a refrigerating coil are sequentially arranged at the front end of the air inlet, and a pipeline of the refrigerating coil is vertically arranged at one end of an air inlet of an S-shaped air pipe; an air outlet of the S-shaped air pipe points to the upper front of the cabinet; the refrigerating coil is made of heat conduction continuous carbon fiber reinforced polymer (CFRP) matrix composites; an exhaust fan and a charging module are sequentially arranged at the rear end of the air outlet of the cabinet; a control device is arranged above the charging module. With respect to a high-power indoor charger, the system avoids the situation that the cooling effect is poor because hot air accumulates in a charging room; with respect to an outdoor charger, the system solves the contradiction between cabinet shell protection and power device heat dissipation and enables a high-power charger to become the outdoor charger and be installed, put into operation and used outdoors.

The invention discloses a preparation method and application of a carbon fiber reinforced polymer-based composite material. The preparation method comprises the following steps: putting a salt solution for an inorganic compound into a reaction kettle, and putting a base material for inducing an alternating magnetic field into the reaction kettle; sealing the reaction kettle and putting in hydrothermal induction heating equipment; cooling the reaction kettle to room temperature; taking out the base material loaded with the inorganic compound, and cleaning and drying; and finally, performing hot-press moulding to obtain the carbon fiber reinforced polymer-based composite material. In the invention, the hydrothermal induction heating technology is applied to the surface grafting of carbon fiber, and the shortcoming of difficult combination with other components caused by the surface inertia of carbon fiber is overcome. Moreover, under the effect of alternating magnetic field, the high temperature of carbon fiber promotes the growth of multiple nano materials on the surface thereof, more meshing sites are provided for the combination of carbon fiber and resin, and the interface bonding between the carbon fiber and resin as well as the mechanical properties of the composite material are improved.

The invention provides a carbon fiber reinforced polymer (CFRP) machined surface appearance representation method. The method includes the steps that a to-be-represented workpiece is a continuous curve block on a bounded domain, and a surface appearance characteristic function F(x,y) is measured; wavelet component division is carried out on the appearance characteristic function F(x,y) of the three-dimensional surface of the bounded domain, and representation of the surface appearance is further carried out. The method is based on a wavelet assessment reference, machined surface appearance of the CFRP is truly reflected, and meanwhile the machined surface appearance which is precisely represented is obtained by calculating representation parameters. According to a wavelet theory, a multi-fractal spectrum of the machined surface of the CFRP is calculated by means of a wavelet transform method, and multi-fractal parameters are identified to represent characteristics of the machined surface appearance of the CFRP. An appearance representation model is built on the basis of multi-fractal characteristic analysis of the machined surface of the CFRP, the characteristics of the whole machined surface can be described, and local appearance characteristics can be described.

The composite girder partially reinforced with carbon fiber reinforced polymer is a composite steel-concrete beam partially reinforced with a sheet of carbon fiber reinforced polymer bonded to a concrete slab secured to a flange of the steel beam by shear studs, the sheet of CFRP extending across the length and width of the negative moment region of the beam. The negative moment region may be centered about a point of interior support of the composite steel-concrete beam. The carbon fiber reinforced polymer may have a thickness of about 0.25 mm.

The invention discloses a preparation method and application of a carbon fiber-reinforced polymer-based composite material.The preparation method comprises the steps that firstly, a saline solution needed by an inorganic compound is put into a reaction kettle, a basis material used for inducing an alternating magnetic field is put into the reaction kettle, and the reaction kettle is sealed and then put into hydrothermal induction heating equipment; secondly, the temperature of the reaction kettle is lowered to the room temperature, and the basis material loaded with the inorganic compound is taken out, cleaned and dried; lastly, hot press molding is performed on the basis material, and then the carbon fiber-reinforced polymer-based composite material is obtained.According to the preparation method and application of the carbon fiber-reinforced polymer-based composite material, a hydrothermal induction heating technique is applied to carbon fiber surface grafting, and therefore the defect, brought by the surface inertia of carbon fibers, that the carbon fibers are not prone to be combined with other components is overcome; in addition, under the action of the alternating magnetic field, the high temperature of the carbon fibers promotes growth of multiple nanometer materials on the surfaces of the carbon fibers, more meshing sites are supplied to combination of the carbon fibers and resin, and interface bonding of the carbon fibers and the resin and the mechanical property of the composite material are improved.

A soft lithography template or stamp is made by casting a polydimethysiloxane (PDMS) or other suitable elastomeric precursor onto a master pattern. The master pattern may be formed utilizing known micro-fabrication techniques. The PDMS template includes an inverse copy of the micro-structures on the master pattern, and can be placed into a mold used to prepare a carbon-fiber reinforced polymer composite part or other polymer molding systems where a matrix material passes through a fluid state during the cure process. The liquid resin material flows into the structures on the surface of the PDMS template and hardens during the curing cycle. After the part is released from the mold, the PDMS template can be peeled from the surface of the part to reveal the free standing micro structures which are a replica of the master pattern.

The invention discloses a method for recovery of carbon fiber from a thermosetting polymer based carbon fiber reinforced polymer material by use of a unitary, binary composite or ternary composite low temperature molten salt system (melting range: 100-400 DEG C). A composite molten salt is prepared in a certain proportion, and then is heated to melt, a carbon fiber reinforced polymer material is added into the composite molten salt for heating until the carbon fiber is separated, the carbon fiber is dragged out and put into water for cleaning, the carbon fiber suspends in the upper layer of the solution, and polymer degradation matters sink to the bottom. The method is simple in process and easy to control, and has no need of large and special instrument equipment, no toxic and harmful gas emissions in a treatment process, and no waste liquids and other secondary pollution after treatment, the carbon fiber is easy to separate, and at the same time inorganic salts dissolved in the water can be recovered and recycled, so that the method has economic, efficient, green and other advantages.

A computer system is provided for processing ultrasonic data of an ultrasonic probe applied to an area of an aircraft component that includes carbon fiber reinforced polymer. C-scan data is obtained and a preliminary mesh is defined over the C-scan data by taking into account the underlying structural or mechanical characteristics of the analyzed component. The mesh is further refined and data gathered for each mesh cell. A heat map is generated based on the mesh.

Described are structural electrode and structural batteries having high energy storage and high strength characteristics and methods of making the structural electrodes and structural batteries. The structural batteries provided can include a liquid electrolyte and carbon fiber-reinforced polymer electrodes comprising metallic tabs. The structural electrodes and structural batteries provided can be molded into a shape of a function component of a device such as ground vehicle or an aerial vehicle.

The invention provides a composite vibration drilling method suitable for a CFRP/titanium (aluminum) alloy laminated material. The method applies ultrasonic vibration and/or low frequency vibration toa tool and/or workpiece during drilling of the laminated material, and according to different drilled objects in a drilling process, different vibration modes are added to suppress processing defectsof all layers so as to obtain optimal drilling effect of the materials of all layers. The method controls a vibration device through a numerical control system so as to realize automatic operation ofthe high and low frequency composite vibration drilling process of the laminated material. The method can select the ultrasonic vibration and/or low frequency vibration processing according to processed objects so as to avoid the defect that a single vibration mode cannot take into account both in processing the carbon fiber reinforced polymer (CFRP) and titanium (aluminum) alloy laminated material.

The invention discloses a preparation method and application of a carbon fiber reinforced polymer-based composite material. The preparation method comprises the following steps: putting a salt solution for an inorganic compound into a reaction kettle, and putting a base material for inducing an alternating magnetic field into the reaction kettle; sealing the reaction kettle and putting in hydrothermal induction heating equipment; cooling the reaction kettle to room temperature; taking out the base material loaded with the inorganic compound, and cleaning and drying; and finally, performing hot-press moulding to obtain the carbon fiber reinforced polymer-based composite material. In the preparation method, the hydrothermal induction heating technology is applied to the surface grafting of carbon fiber, and the shortcoming of difficult combination with other components caused by the surface inertia of carbon fiber is overcome. Moreover, under the effect of alternating magnetic field, the high temperature of carbon fiber promotes the growth of multiple nano materials on the surface thereof, more meshing sites are provided for the combination of carbon fiber and resin, and the interface bonding between the carbon fiber and resin as well as the mechanical properties of the composite material are improved.

A mechanical device was invented for prestressing of carbon fiber reinforced polymer (CFRP) sheets. Significant features of this device are that the CFRP sheets are directly anchored to the mechanical device itself, the prestressing forces are applied with a manual torque wrench without the need for power operated hydraulic jacks and the prestressing transfer is accomplished under slow strain rates. Experimental investigation clearly indicates that the device was efficient in applying prestressing to the CFRP sheets and prestress losses during stressing were maintained at a minimum.

A storage tank for pressurized gas includes a liner defining an interior cavity for storing the pressurized gas. The storage tank further includes a nanoporous carbon shell formed from at least one pyrolyzed polymer. The liner is disposed at an inner side of the nanoporous carbon shell. The storage tank further includes a carbon fiber reinforced polymer layer disposed on an outer side of the nanoporous carbon shell opposite from the liner. The nanoporous carbon shell has an exposed surface at an exterior of the storage tank and is configured to permit gas permeated through the liner from the interior cavity to diffuse through the nanoporous carbon shell to the exposed surface.

The invention discloses a preparation method and application of a carbon fiber reinforced polymer-based composite. A saline solution needed by an inorganic compound is placed in a reaction still, a base material for inducting an alternating magnetic field is placed in the reaction still, and the reaction still is placed in hydrothermal induction heating equipment after being sealed; then the reaction still is cooled to room temperature, and the base material loaded with the inorganic compound is taken out, cleaned and dried; and finally, the base material loaded with the inorganic compound is subjected to hot press molding, and the composite can be obtained. The hydrothermal induction heating technology is applied to surface grafting of carbon fibers, and the defect that due to the surface inertia of the carbon fibers, the carbon fibers cannot be combined with other components easily is overcome. In addition, under the action of the alternating magnetic field, the high temperature of the carbon fibers promotes multiple nanometer materials to grow on the surfaces of the carbon fibers, more meshing sites are provided for the combination of the carbon fibers and resin, and interface bonding between the carbon fibers and the resin and the mechanical performance of the composite are improved.