142 results about "Energy impact" patented technology

Provided is a simple, fast, scalable, and environmentally benign method of producing graphene-embraced or encapsulated particles of a battery electrode active material directly from a graphitic material, the method comprising: a) mixing graphitic material particles and multiple particles of a solid electrode active material to form a mixture in an impacting chamber of an energy impacting apparatus, wherein the graphitic material has never been intercalated, oxidized, or exfoliated and the chamber contains therein no previously produced graphene sheets and no ball-milling media; b) operating the energy impacting apparatus with a frequency and an intensity for a length of time sufficient for transferring graphene sheets from the graphitic material to surfaces of electrode active material particles to produce graphene-embraced electrode active material particles; and c) recovering the particles from the impacting chamber. Also provided is a mass of the graphene-embraced particles, electrode containing such particles, and battery containing this electrode.

An impact absorbing device for a vehicle uses a shape memory material that can be heated to repair deformation from a relatively low speed, low energy impact and its stroking force and energy absorption can be tuned by heating. The shape memory material is suitably used in a crash box having an inserted impact absorbing ram, the box being placed, for example, between a bumper and strong body member. The shape memory material is attached to the box and ram for absorbing energy as the ram is driven into the box. Heating means is provided to repair or tune the shape memory material.

Provided is a simple, fast, scalable, and environmentally benign method of producing graphene-embraced or encapsulated particles of a battery electrode active material directly from a graphitic material, the method comprising: a) mixing graphitic material particles, multiple particles of an electrode active material, and non-polymeric particles of milling media to form a mixture in an impacting chamber, wherein the graphitic material has never been intercalated, oxidized, or exfoliated and the chamber contains therein no previously produced graphene sheets; b) operating the energy impacting apparatus with a frequency and an intensity for a length of time sufficient for peeling off graphene sheets from the graphitic material and transferring graphene sheets to surfaces of electrode active material particles to produce graphene-embraced active material particles; and c) recovering the graphene-embraced particles from the impacting chamber. Also provided is a mass of the graphene-embraced particles, electrode containing such particles, and battery containing this electrode.

A method of producing isolated graphene sheets directly from a graphitic material, comprising: a) mixing multiple particles of a graphitic material and multiple particles of a solid carrier material to form a mixture in an impacting chamber of an energy impacting apparatus; b) operating the impacting apparatus for peeling off graphene sheets from the graphitic material and transferring these graphene sheets to surfaces of solid carrier material particles to produce graphene-coated solid particles inside the impacting chamber; c) separating the graphene sheets from the solid carrier material particle surfaces to recover isolated graphene sheets. The method enables production of graphene sheets directly from a graphitic material without going through a chemical intercalation or oxidation procedure. The process is fast (hours as opposed to days of conventional processes), has low or no water usage, environmentally benign, cost effective, and highly scalable.

Provided is a method of producing pellets of a graphene-polymer composite, the method comprising: (a) mixing multiple particles of a graphitic material and multiple particles of a solid polymer carrier material to form a mixture in an impacting chamber of an energy impacting apparatus; (b) operating the energy impacting apparatus with a frequency and an intensity for a length of time sufficient for peeling off graphene sheets from the graphitic material particles and transferring the graphene sheets to surfaces of the solid polymer carrier material particles to produce graphene-coated polymer particles inside the impacting chamber; and (c) feeding multiple graphene-coated polymer particles into an extruder to produce filaments of an extruded graphene-polymer composite and operating a cutter or pelletizer to cut the filaments into pellets of graphene-polymer composite. The process is fast (hours as opposed to days of conventional processes), environmentally benign, cost effective, and highly scalable.

A low mass safety helmet is provided, containing a sandwich of polymer composite materials to produce an effective means of shock mitigation to a wearer's head. The sandwich comprises an inner and outer layer of fibre reinforced polymer which encapsulates a pre-formed energy dispersive material which is typically a high impact resistant foam. Optionally, on the inside surface of the inner layer which is adjacent to the wearer's head there may also be fitted a comfort liner, manufactured from either a low density impact foam or a material or plastic lattice, to provide comfort to the wearer and protection from low energy impacts. The use of a preformed foam liner in the manufacturing of the helmet allows for accurate dimensional tolerances to be achieved, thus allowing helmets which can meet the requirements for both military and civilian use to be manufactured by mass production techniques.

The invention discloses a high-voltage circuit breaker mechanical state online monitoring and fault identification device. The high-voltage circuit breaker mechanical state online monitoring and faultidentification device comprises an image sensor, a hall current sensor, a sound sensor, a vibration acceleration sensor, an acquisition card, an intelligent industrial control monitor and an acousto-optic alarm module; the mechanical parameters of the operating mechanism of the high-voltage circuit breaker in the operation process are synchronously monitored through the four sensors, and then theintelligent industrial control monitor is used for analyzing and processing so as to judge the health grade required by the mechanical state in the operation process of the operation mechanism; the device can achieve rapid analysis of the energy impact, the component movement and the driving state of the operation mechanism in the operation of the circuit breaker, the overall mechanical performance and the running state of the operating mechanism can be judged, and more importantly, the device has no influence on normal operation of the circuit breaker; and the device can be used for solvingthe problem the fault of the high-voltage circuit breaker is difficult to judge only by means of perceptual understanding and experience in the periodic inspection by an operator, so that efficiency is improved, and manpower and material resources are saved.

The invention relates to a preparing method of an ultrahigh manganese multielement rare earth wear-resisting alloy steel liner plate. The liner plate comprises the following components in percent by mass: 0.9 to 1.4% of C, 16.0 to 19.0% of Mn, smaller than 1.0% of Si, 1.5 to 3.0% of Cr, 0.3 to 1.0% of Mo, 0.2 to 0.5% of V, 0.1 to 0.4% of Ti, smaller than 0.3% of CU, smaller than 0.035% of S, smaller than 0.05% of P, 0.2% of RE and the balance of steel. The preparing method of the liner plate comprises the following steps of: adding into a smelting furnace for smelting and casting the liner plate, placing the liner plate into a thermal processing furnace for normalizing, quenching and tempering; air cooling processing; tempering the air-cooled liner plate at low temperature; performing mechanical performance test, grinding and polishing. The preparing method has the beneficial effects that the alloy steel has the tenacity strength of common high manganese steel, substrate initial hardness is enhanced, the material is fast hardened by small energy impact in use, and achieves a excellent wear-resisting capability, the service life of the product is improved, productivity is improved, production cost is reduced, and resource waste is reduced.

The invention belongs to the technical field of engineering material detection and in particular relates to an impacting ball-pressure testing and evaluation method of an engineering material. An impact load and an impact indentation radius are obtained through an impacting ball-pressure test, so that the plasticity resistance, deformation capability, elasticity recovery capability, surface dynamic elastic modulus and shear modulus of the engineering material are analyzed; the impacting ball-pressure testing and evaluation method comprises four parts including test sample treatment, impacting testing, three-dimensional shape inspection and data processing. Compared with the prior art, the impacting ball-pressure testing method provided by the invention can realize polishing on a test sample needing surface treatment; a self-researched automatic ball-pressure tester can be used for carrying out a small-energy impacting ball-pressure test, and shape changes of the test sample are analyzed by measuring a 3D (Three Dimensional) shape of a surface damaged region of the test sample through utilizing a laser confocal technology; finally, test sample surface mechanical properties including the plasticity resistance, deformation capability, elasticity recovery capability, surface dynamic elastic modulus and shear modulus and the like of the surface of the test sample are analyzed through corresponding software; finally, one set of complete impacting ball-pressure testing method of the engineering material is obtained.

Provided is a simple, fast, scalable, and environmentally benign method of producing graphene-embraced particles of a battery electrode active material, comprising: a) mixing graphitic material particles and multiple particles of a milling media to form a mixture in an impacting chamber of an energy impacting apparatus; b) operating the energy impacting apparatus with a frequency and an intensity for a length of time sufficient for transferring graphene sheets from the graphitic material to surfaces of milling media particles to produce graphene-embraced milling media particles; c) mixing particles of an active material with graphene-embraced milling media particles in an impacting chamber of an energy impacting apparatus; d) operating the energy impacting apparatus for transferring graphene sheets from the graphene-embraced milling media particles to surfaces of active material particles to produce graphene-embraced electrode active material particles; and e) recovering these graphene-embraced active material particles from the impacting chamber.

The invention discloses a positive-pressure blasting device, which solves the problem that ultra-shallow well crustless bomb high-energy gas fracturing cannot be directly realized in the prior art. The positive-pressure blasting device comprises a primer ignition system, a pressure generator and an initiation device. A bridge plug grain is arranged in the central hole of the pressure generator. The upper end of the pressure generator is connected with an ignition joint in a screwing way. The initiation device comprises a pressure initiation joint, a pressure initiation firing pin, a micro initiation core piece and a booster grain, wherein the booster grain, the micro initiation core piece and the pressure initiation firing pin are sequentially arranged in the center of the pressure initiation joint from the bottom to the top. The positive-pressure blasting device has the advantages that the combustion is ensured to be full during ultra-shallow well crustless bomb high-energy gas fracturing, the ultra-shallow well fracturing operation is smoothly realized, the filler is prevented from being discharged out of a hole and being failed, the explosion energy impact waves can decompose petroleum and natural gas hydrate solids into liquid and gas, and the collection and extraction of the generated liquid and gaseous natural gas hydrates are facilitated.

The invention discloses a supersonic wind tunnel model pitching motion protection device. The pitching motion protection device comprises a transverse support, the main body of the transverse supportis a tubular support rod, and the tubular support rod penetrates through the mass center of an aircraft model to support the aircraft model on the central axis of a wind tunnel test section; a motionbearing, a mechanical limiting mechanism and an anti-impact conical surface locking mechanism are sequentially installed on the tubular supporting rod extending out of the left side of the transversesupport outside the wind tunnel test section, and a motion bearing, a mechanical limiting mechanism and an emergency forced zero returning mechanism are sequentially installed on the tubular supporting rod extending out of the right side of the transverse support. The pitching motion protection device can provide three-level protection from weak to strong for an aircraft model of a supersonic windtunnel simulation test, has the advantages of being reliable in structure and convenient to control, has the functions of high resistance to high-energy impact, forced zero returning and the like, and can be expanded to be used in supporting model systems on the two sides of a subsonic wind tunnel and a transonic wind tunnel.

The invention discloses a PCB (printed circuit board) matrix fuse and a manufacturing method thereof. A PCB substrate is used as a matrix, and is wrapped by flame-retardant arc-extinguishing glue; an effect point part of a melt layer on the upper surface of the PCB substrate is wrapped by a melting supporter; the melting supporter is wrapped by an arc extinguishing protection layer prepared from the flame-retardant arc-extinguishing glue, so that the effect point part, which is easy to fuse, on the melt layer is completely wrapped in the flame-retardant arc-extinguishing glue, and the flame-retardant arc-extinguishing glue is provided with an arc extinguishing layer of a three-dimensional elastic structure and a nanofiller; in case of high current and high voltage in the fuse, a breaking arc generates plasmas which are outwards splashed; the arc extinguishing layer can absorb a large amount of heat and bear energy impact of the plasmas; the nanofiller absorbs a large amount of heat and is partially decomposed, thus generating flame-retardant arc-extinguishing gas which accelerates attenuation of short circuit current to finally extinguish the arc; the breaking capacity is improved, and the surge resisting capacity is also improved. The manufacturing method is mature in process; for a small-sized fuse with high surge resistance and high breaking capacity, the manufacturing method is relatively low in cost.

A light weight armor system for retrofitting onto a light vehicles or incorporating into a vehicle to protect against HEAT warheads. The armor system comprises an outer armor structure for rotating a HEAT warhead toward a preferred detonation angle to maximize the protection of underlying armor or vehicle structures. This first armor structure will further impart a rotational movement to increase the energy impact footprint, dissipate jet stream energy, and improve the probability that a second protection layer can successfully resist penetration by the jet stream. Coatings on the armor structure materials laterally impact a HEAT jet stream to further disrupt the jet and dissipate its energy.