673 results about "Impact testing" patented technology

A bone substitute for use in impact testing of a structure simulating the human body which includes a member fabricated from epoxy resin and having a lengthwise dimension, and a fiberglass sheath embedded in an outer circumferential portion of the member, the sheath having glass fibers oriented along the length of the member.

The invention discloses a multi-angle drop-hammer impact testing device. The multi-angle drop-hammer impact testing device comprises a test bench for fixing a test specimen, a drop-hammer assembly and a lifting mechanism, wherein the drop-hammer assembly is correspondingly arranged above the test bench by the lifting mechanism; the test bench comprises a test bench main body and an angle adjustment mechanism for adjusting the rotation of the test bench main body, and the drop-hammer assembly is kept to correspond to the test specimen on the test bench main body by a hammer adjustment mechanism. The invention also discloses the test bench of the multi-angle drop-hammer impact testing device using the structure. The test bench main body rotates by a preset angle by the angle adjustment mechanism, so as to simulate the impacts from different angles; the drop-hammer assembly is allowed to impact the test specimen from different angles, and the impacts comprise front-surface impact, the offset impact and the lateral impact, so that the material mechanical properties of the test specimen can be analyzed from different impact angles, and the flexibility and universality of the drop-hammer impact test are greatly improved.

The present invention is directed to an in-line compounding and molding process for making fiber reinforced polypropylene composite parts and articles that exhibit beneficial mechanical and aesthetic properties imparted by such process and compositions. The in-line compounding and molding process includes the steps of providing an in-line compounding and molding machine comprising a twin screw extruder fluidly coupled to an injection molder; extrusion compounding in the twin screw extruder a composition comprising at least 30 wt % polypropylene, from 10 to 60 wt % organic fiber, from 0 to 40 wt % inorganic filler, and from 0 to 0.1 wt % lubricant to form a melt extrudate; conveying the melt extrudate to the injection molder; and molding the melt extrudate in the injection molder to form a part or article. Fiber reinforced polypropylene articles formed from the in-line compounding and molding process have flexural modulus of at least 300,000 psi and exhibit ductility during instrumented impact testing. Fiber reinforced polypropylene articles formed from the process of the present invention are particularly suitable for making household appliances, automotive parts, and boat hulls.

The invention provides an impact testing machine. The impact testing machine comprises a cylindrical pellet support, a gun barrel used for launching the pellet support and a pellet support recoverer, wherein the inner wall of the gun barrel is in clearance fit with the lateral side of the cylindrical pellet support, and the pellet support recoverer is arranged on an outlet of the gun barrel and is used for separating the pellet support and a pellet and guaranteeing smooth pass of the pellet when the pellet support and the pellet pass. When the pellet support is located in the gun barrel, the end, facing the outlet of the gun barrel, of the pellet support is used for placing the pellet. Because the pellet support is used for launching the pellet, a good pellet acceleration effect can be achieved; when the pellet and the pellet support integrally pass through the pellet support recoverer, the pellet support is recovered, the pellet continues to be used for an impact test without being affected, and accordingly pellets of all kinds of shapes and specifications can be conveniently used for the impact test.

A system and method for environmental testing and evaluation of non-destructive inspection (NDI) sensors is provided. The system has a structure having a plurality of NDI sensors to be tested. The system further has an environmental chamber containing heating elements and cooling elements for heating and cooling the NDI sensors when the structure is secured to the environmental chamber. The system further has an impact testing assembly positioned over the structure for impacting the structure. The system further has a data acquisition computer subsystem coupled to the environmental chamber and coupled to the NDI sensors. The data acquisition computer subsystem controls and monitors the heating and cooling elements, and collects and processes temperature and impact data acquired by the NDI sensors.

A vehicle impact testing device is provided with a towing device for running a test car along a running road surface to collide with a barrier. The towing device is movably suspended from a pair of guide rails received in a recess formed below the running road surface. The towing device is disposed between the guide rails, thereby making effective use of the space between the guide rails. Further, the towing device is disposed at a position below the running road surface, so that it does not interfere with the running of the test car.

An impact testing device used for testing impact resistance of electronic devices is provided. The impact testing device includes a supporting assembly for supporting the electronic device, a falling assembly for an impact head to fall through to hit the testing points of the electronic device on the supporting assembly, and a controller box, electrically connected to the supporting assembly. The controller box controls the supporting assembly to adjust the positions of the electronic device for the impact head to hit different testing points of the electronic device.

A hydraulic control system of a multifunctional hydraulic testing stand comprises a hydraulic oil source module, a high-flow unloading impact simulation and test module, a hydraulic cylinder impact test and buffer performance test module, a proportional component test module, an oil cylinder test and simulation loading module and a pressure oil source output module. In this way, a module is connected with a test oil cylinder and a loading oil cylinder through a component, and corresponding tests are completed. By the adoption of the hydraulic control system, a clean oil source meeting the requirement of the proportional servo component test can be provided, the output pressure and flow are stable and adjustable, the functions of hydraulic impact testing, high-flow unloading impact testing, buffer performance testing, proportional component testing, proportional servo oil cylinder testing, simulation loading and pressure oil source output are integrated through the system, the integration degree is high, and the application range is wide.

The invention discloses a grounding simulation testing device and a grounding simulation testing method. The grounding simulation testing device consists of a transparent container, a transparent liquid medium and an equivalently-contracted grounding device model. The method comprises the following steps of: simulating the variation of earth resistivity by adjusting the resistivity of the liquid medium in the transparent container; simulating non-uniform distribution of soil resistivity by arranging a horizontal or vertical insulated spacer layer in the transparent container; simulating grounding devices of different types by changing the shape of the grounding device model; simulating different grounding device types or the dispersion processes and dispersion mechanisms of different soil structures flowing through working frequency, direct-current and lightning impulse current by arranging working frequency, direct-current and impact testing power supplies; embedding a sampling sensor; measuring needed testing parameters; and recording a testing process through a video camera. The grounding simulation testing device and the method have the advantages of simple and compact structure, easiness in operating and high equivalence.

The invention discloses an electronic control type aimable bird shot impact testing device and belongs to the technical field of aeronautical facilities. The electronic control type aimable bird shot impact testing device comprises an air storage tank, an electronic control valve, a sighting device, a bird shot filling and launching compartment, a bird shot launching tube, bird shot supporting rods, a bird shot inlet, a sliding valve groove, a bird shot inlet sliding valve and a bird bolt casing stripping device, wherein the inlet of the bird shot launching tube is connected with the bird shot filling and launching compartment, the bird shot supporting rods are arranged in the bird shot filling and launching compartment evenly, the bird shot inlet and the sliding valve groove are formed in the same lateral wall of the bird shot filling and launching compartment, and the bird bolt casing stripping device is fixedly connected with the outlet of the bird shot launching tube. By means of the electronic control type aimable bird shot impact testing device, impact force is applied on bird shots by controlling high-pressure air, and therefore, the bird shots fly to a target quickly to achieve bird shot impact effect. The electronic control type aimable bird shot impact testing device is simple, parts are purchased or manufactured easily, the whole electronic control type aimable bird shot impact testing device can be implemented easily, and cost is low.

A micro-impact testing apparatus for measuring the impact characteristics of a microelectronics specimen exposed to an impact thereon. The apparatus comprises of a specimen holder for receiving a specimen to be tested, and an impact device. The impact device comprises of an impact head, a support member, at least one connecting element and a first flexural spring. The support member is connected to the connecting element in that the first flexural spring is firmly attached with its one end to the support member and with its other end to the connecting element. A second flexural spring, being at least substantially identical to said first flexural spring, is firmly attached with its one end to the connecting element and with its other end to the impact head so that the ends of the first and second flexural springs define, in an unloaded state of the flexural springs, a rectangle. The impact head is moveable transversally with respect to the first and second flexural springs along a linear line between a spring-loaded position and an impact position thereof. The specimen holder is aligned with the impact device such that the specimen is arranged in said impact position of the impact head so that the impact head is capable of impacting on the specimen after traveling from its loaded position towards its impact position along said linear line upon release thereof from said loaded position.

The invention relates to a pendulum bob type shearing-resistant impact testing machine and a testing method thereof, belonging to the technical field of concrete material testing. The pendulum bob type shearing-resistant impact testing machine can achieve accurate shearing-resistant impact testing result and wide application range, is convenient to carry, and can avoid danger to operators. The pendulum bob type shearing-resistant impact testing machine comprises a working shaft, a base, a support, a connecting frame, a pendulum bob, a pendulum rod, a graduated dial and a pointer; the testing method comprises the following steps: measuring the compressive strength of a test piece; horizontally placing the test piece on the support and recording the initial scale value of the pointer on the graduated dial; carrying out pendulum bob shearing-resistant impact on the front surface of the test piece; recording the ending scale value of the pointer on the graduated dial to obtain the difference of the initial scale value and the ending scale value; measuring a shearing-resistant impact force-displacement curve to obtain the shearing-resistant impact energy of the test piece; corresponding the shearing-resistant impact energy of the test piece to the difference of the initial value and the ending value.

The invention discloses a comprehensive impact test bench for steering parts of an automobile and a detection method thereof. The test bench includes a main body support structure, a pendulum fixture, a drop hammer fixture, a pendulum assembly, a drop hammer assembly, a pendulum uncoupling device, and a drop hammer uncoupling device , The first lift, the second lift, locking device, drop hammer anti-shock device. The present invention can carry out pendulum impact test and drop weight impact test. The comprehensive impact test bench of automobile steering parts utilizes the free fall movement of the pendulum assembly and the drop weight assembly to act on the test sample, and can directly perform impact resistance on the test sample. load test. Through the elevator, the remote control is realized, which greatly improves the safety, and through the feedback of the sensor, the lifting height of the falling weight and the lifting angle of the pendulum are more accurate, so that the impact load resistance of the test sample can be easily detected. , the detection result is more accurate.

The invention relates to a portable high-precision drop hammer impact testing machine comprising a falling weight impact assembly, a photoelectric speed measuring system, a guide rail-sliding block system, an anti-secondary impact device, a lifting releasing device and a support frame. The falling weight impact assembly is connected with the support frame by the guide rail-sliding block system; the photoelectric speed measuring system is connected with the falling weight impact assembly and the support frame; the anti-secondary impact device is fixed at the bottom of the support frame; and thelifting releasing device is arranged at the support frame. Compared with the prior art, the portable high-precision drop hammer impact testing machine has the following advantages: the overall structure is simple; the machine is convenient to assemble and move; the impact force, the impact speed and the rebound speed can be synchronously measured in real time; the drop hammer falls along the guide rail; the guiding precision is high; the impact point position is accurate; the testing machine is suitable for the low-speed impact tests of various large engineering structures; and the impact process can be studied and analyzed further by force, impact speed, and rebound speed collection.

The invention discloses a falling weight impact testing machine which comprises a rack, a lifting mechanism, an impact counter weight and a load-bearing mechanism, wherein the lifting mechanism comprises a positioning pulley arranged above the load-bearing mechanism and connected with a cable between a cable disc and the impact counter weight, and a cable adjustment mechanism; the cable adjustment mechanism comprises an air cylinder and a movable pulley; the air cylinder is fixed on the rack; and the movable pulley is connected with a piston rod of the air cylinder, and is connected with the cable between the cable disc and the positioning pulley. The falling weight impact testing machine can achieve that a release rate of the cable can be greater than a free falling motion rate of the counter weight, so that a falling weight impact test can be performed without separating the impact counter weight from the cable; the manpower is saved; and the working efficiency is improved.