2268results about "Investigating abrasion/wear resistance" patented technology

The invention provides a fluid product service life testing device. The fluid product service life testing device comprises a fluid generation device, a fluid product testing region and a washing device, wherein a fluid circulating pipeline is formed between the fluid generation device and the fluid product testing region; fluid flows into the fluid product testing region from the fluid generationdevice and then continually flows back into the fluid generation device; the washing device is communicated with the fluid circulating pipeline; the washing device is communicated with the fluid product testing region and then is communicated with the fluid generation device through the fluid circulating pipeline; the fluid generation device is connected with a sediment recycling device. The fluid product service life testing device can be used for testing the service life of a product through simulating fluid flowing of production conditions.

An apparatus adapted to interact with a cylindrical mold for a gyratory compactor so as to determine a property of the gyratory compactor is provided, wherein the mold is adapted to contain a sample therein. Such an apparatus comprises a rigid disk-shaped plate defining an axis and a periphery, with the plate being adapted to be disposed within the mold. At least one sensing device is operably engaged with the plate, wherein the at least one sensing device is configured to measure a proximity of the at least one sensing device with respect to a reference member and to produce a corresponding signal indicative of the property of the gyratory compactor. In one embodiment, the apparatus is configured to determine the gyration angle of the mold, while in another embodiment, the apparatus is configured to determine the pressure exerted on the sample within the mold. The property of the mold may be determined either statically or dynamically. Associated apparatuses, devices, systems, and methods are also provided.

Method of product evaluation comprising the steps of applying at least one substance to a surface of an artificial substrate to form a substance-coated surface, wherein the substrate surface demonstrates at least one physical property selected from the group consisting of a total surface energy of from about 15 mJ/m² to about 50 mJ/m², a polar component of the total surface energy of from about 0 mJ/m² to about 15 mJ/m², a zeta-potential at a pH of about 5.0 of from about −30 mV to about 30 mV, and combinations thereof, and performing at least one analysis of the substance-coated surface.

The invention discloses a device and a method for testing linear reciprocating sliding friction and abrasion; the device consists of a transducer, a workbench, a sample table, a dragging frame, a force sensor, a changeover switch, a counter, a locking device, a guideway, a baffle, a cable wire, a reducer, a peak value stabilizer, a control part and an auxiliary component; the equipment can automatically complete the abrasion test of an arranged period and can manually complete the test to friction coefficient. The testing method comprises the following steps of: leading the friction block and the sample to reciprocate to slide horizontally with constant pressure, obtaining an abrasion weight loss rate after abrading, keeping a certain positive pressure and leading the sliding block to move from stillness to uniform movement, thus obtaining the maximum static friction coefficient and the sliding friction coefficient. The device and the method can realize uniformly linear and reciprocating relative sliding abrasion in long unidirectional journey, test the maximum static friction coefficient between two bodies and the maximum static friction coefficient, the speed, the load and the adjustable journey with other materials, and can be widely applied to the detection of various samples of different materials and different structural forms.

A system for in situ inspection of a surface of a hot gas component of a turbine includes a robot having an elongated inspection arm extending toward the surface of the hot gas component; and an inspection head carried adjacent an end of the inspection arm remote from controls for the robot. The inspection head is manipulated by the inspection arm to locate the inspection head adjacent interior wall portions defining the hot gas component including by displacing the inspection head in a generally axial direction and generally radially toward a wall portion of the hot gas component being inspected. The inspection head is configured with a UV system to excite and detect fluorescence from a taggant material disposed in a coating on the hot gas component.

This invention relates to one multi-function micro friction test machine, which comprises drive device, move device connected to the drive one and load and measurement device on the move device and lift bench of the measurement device, wherein, it uses hanging spring board and connection bar are hinged with drive device and move device to make the slide bench generate one small range reverse line move under bar push with constant vibration range and small error; it uses motor to drive connection bar push slide to generate large vibration reverse line move.

The present invention provides a cutter rock-breaking mechanism which is applied in the technical field of the cutter experiment and an abrasion resistant tester thereof. The abrasion resistant tester comprises a hydraulic cylinder, a structural frame, a bearing plate, a cutter support, a disc-shaped hob and a rotation worktable. When the cutter rock-breaking mechanism and the abrasion resistant tester work, the disc-shaped hob is connected with the cutter support through a bolt. The cutter support is jointed and fixed on the bearing plate through the bolts. The hydraulic cylinder exerts a certain load to impact the disc-shaped hob to the rock sample on the worktable and generate a certain penetration. Afterwards the worktable is rotated through a power system to execute cutting test to the rock passively. The cutter rock-breaking mechanism and the abrasion resistant tester execute cutting with a single cutter to do the abrasion resistance test of the cutter. The bearing plate is provided with a groove. The regulation to the cutter space and the phase angle is realized through the variation of the jointing position of the cutter support on the bearing plate. The regulation to the inner deflection angle of the cutter is realized by changing the cutter supports with different angles. The positioning and rotation of the rock are realized through the rotating worktable. The designing of the device is novel and scientific. The knife angle, phase angle and inner deflection angle which affect larger to the rock breaking and abrasion of cutter are researched. The device settles the problem that two hob cutters simultaneously cut the rock.

The invention discloses a method for testing accelerating and loading of main drive wheel type pavement materials and a device thereof. The device comprises a control console, a PLC control box, an electronic box, a hydraulic device, a motor, a brake, a driving chain and chain wheel, a drive wheel, a driven wheel, a water bath tank, a circulated air inlet duct, a thermostatic chamber, a test cabinet and a circulated air outlet duct; the control console is positioned on the outside of the test cabinet; the hydraulic device is connected with the driven wheel; the motor is connected with the drive wheel via the driving chain and chain wheel; the drive wheel is fixed on a bracket; the driven wheel is positioned in a guide slot; the water bath tank is arranged right below the driven wheel; a ranging laser is positioned on one side of the driven wheel; one end of the drive wheel is provided with a microphone and the bottom thereof is provided with a torque sensor; the contact surface of the drive wheel and a test piece is provided with a pressure sensor; two tachometers are fixed on the bracket and are respectively positioned on the outsides of the drive wheel and the driven wheel. The device has simple structure, low prices, flexible use and good reliability.

An arrangement for monitoring the wear status of a friction clutch in the drivetrain of a motor vehicle driven by an internal combustion engine includes a wear detection circuit that responds to speed information representing the instantaneous input speed of the friction clutch supplied by a first speed sensor and to information supplied by a movement sensor representing the beginning of a starting process. The wear detection circuit supplies, as a measurement for the loading of the friction clutch during a starting process, load information which is a predetermined monotonic function of a value of the first speed information following the beginning of movement after a predetermined time interval. The monotonic function could also be of a mean value from a plurality of values of the first speed information succeeding one another at predetermined time intervals following the beginning of movement.

The invention relates to a high-speed high-temperature multifunctional friction and abrasion tester which is especially applicable to simulating the service conditions of the sealed pairs of turbojet engines and solves the problems that the friction pairs in the prior art can not meet the needs of high speed (over 100m/s) and high temperature (up to 1200DEG C) in the aspects of motion line speed and experiment temperature and can not simulate the high-speed high-temperature friction and abrasion conditions of the gas path sealing of the turbojet engines and the like. The tester is provided with a rotation main shaft, a rotation disc, a numerical control sliding table and heating devices, wherein the rotation disc is arranged on the rotation main shaft, a rotation sample is arranged on therotation disc, the numerical control sliding table is arranged at one side of the rotation main shaft, a translation sample is arranged on the numerical control sliding table and is opposite to the rotation sample to form a friction pair; and the heating devices are arranged at the side of the rotation sample and at the side of the translation sample. By adopting the invention, the high-speed stable rotation of the rotation main shaft of the tester and the rapid heating of surface of the friction pair sample can be realized.

An apparatus for measuring abradability of a sample comprises a rotating drum with a rough surface and a means for contacting a sample with the rough surface while the drum is rotating. The sample may be caused to rotate relative to the drum, and to translate across the drum while the drum is rotating. Environmental controls may be used to control the temperature and the atmospheric conditions of the test. In the method of the invention, energy consumed by contact between the sample and the drum, as well as the weight loss of the sample, may be measured.

The on-line work condition simulating rolling contact fatigue tester includes driving device, loading device, testing device and signal collecting device, and has temperature controlling cavity sleeved on the driving shaft, lower test cavity end interference fitted to the end of the driving shaft and set inside the temperature controlling cavity, test cavity with upper test sample, rolling part, lower test sample, abruptly stopping cam on the upper test sample, and rolling pin thrust bearing on the abruptly stopping cam and matching the pressure block below the loading lever. The present invention can simulate the contact fatigue, friction and wear process of friction pair with or without surface coating for relevant detection, and the instantaneous failure state may be kept by means of abrupt stopping unit.

The invention discloses a friction and abrasion testing method and equipment of cylinder piston ring element in the friction and abrasion testing technique domain, which is characterized by the following: adapting mechanic radial loading construction method and equipment to test the cylinder and piston ring element; adding liquid through heating the cylinder cavity to keep thermal; fixing the friction force sensor on the test machine rack directly; eliminating the measuring result influence of friction force by inertia force of moving component to gain more precise friction force; segregating the friction force sensor and cylinder through thermal-insulation material; setting the cooler to prevent the rack temperature from elevating and the temperature of friction force sensor from exceeding the highest working temperature. The invention is used as the rapid assessment method in the lab developing procedure of cylinder piston ring.

A method and associated product for wear level determination. Data is received from at least one Radio Frequency IDentification (RFID) tag within a thickness of a wearing surface layer of each product of at least one product. The wearing surface layer of each product is an outermost surface layer of each product. The wearing surface layer of each product is adapted to be worn away such that the thickness of the wearing surface layer is reduced as each product is being used. A measure of wear of the wearing surface layer of each product is determined.

This invention relates to a method for determining a wear state of a chisel, a chisel holder, and/or a chisel holder replacement system equipped with a chisel and chisel holder. For this method to give the user qualitative and quantitative information about the wear, according to one embodiment of this invention, a position of at least one point of the chisel and/or the chisel holder is determined by a contactless measurement method and a corresponding measurement result is compared in a switching unit to a reference value stored in a memory device.

The invention provides, in one embodiment, a device for performing scrub testing on a plurality of samples simultaneously, including a plurality of scrubbing devices. A stage is provided which positions the plurality of samples in contact with the plurality of scrubbing devices. The scrubbing devices can individually be provided with different weights to produce different forces on the samples. A motion producing device produces one or both of linear and rotational motion between the brushes and the samples. The scrubbing devices are held in the stage so as move freely vertically.

The invention discloses a micro-movement friction and abrasion testing machine. The micro-movement friction and abrasion testing machine is that two symmetrically arranged electric vibration exciters are adopted and used as excitation sources for generating micro-movement friction between friction pairs; a loading device is adopted and used for applying positive pressure to the friction pairs; a force sensor is adopted and used for collecting a positive pressure signal; a computer data processing device is arranged and produces a closed-loop feedback control together with the acquired positive pressure signal, and the load applied by the loading device is kept constant. In addition, the computer data processing device is used for recording and analyzing the positive pressure signal acquired by the sensor, a micro-movement friction force signal, and a displacement signal, acquired by a displacement sensor, of each electric vibration exciter and then are automatically outputting the signals to generate abrasion performances for a sample A and a sample B of the friction pairs; and therefore, the micro-movement friction and abrasion testing machine has the characteristics of being adjustable in vibration excitation amplitude, variable in vibration mode, convenient to operate and move, high in loading precision, and reproducible in project service condition, the experimental data is high in repeatability and can be used for evaluating the micro-movement friction and abrasion performance of a material.

The invention relates to a torsional fretting friction wear test method, the method is that: an upper testing part is clamped in an upper clamp, a lower clamp is fixed with a high-precision low-speed rotation table by a thread, a vertical central line of a holding cavity of the lower clamp is aligned with a rotating shaft of the high-precision low-speed rotation table, a spherical lower testing part is clamped by the lower clamp; the upper clamp is controlled for up and down movements by a data collection control system, the upper and lower testing parts are contacted and are exerted by a set load, at the same time, the lower clamp and the lower testing part clamped by the lower clamp are controlled by the data collection control system to carry out a plurality of times of reciprocating rotations by a set rotation speed and a rotation angle; at the same time, the friction torque is measured by a six-dimension force/torque sensor which is connected with the upper clamp and is sent to the data collection control system, and a torque-angular displacement curve under the set rotation speed and the load conditions can be obtained by analysis. The method can conveniently allow the materials to generate the small angle torsional fretting friction wear, the degree of the automation is high, the precision of the control and the test is high and the reproducibility of the test data is good.

The invention relates to a constant temperature wiggly corrosive wear testing device and a test method thereof. A medium cavity of a high ball discharge test piece is arranged on the periphery of a lower clamp of the testing device, and the cavity is filled with test medium; the wall of the cavity is of a sandwich layer structure, the lower part of the sandwich layer is provided with a water inlet, the upper part is provided with a water outlet, the water inlet is connected with a constant temperature water bath kettle by a miniature water pump, and the water outlet is directly connected with the constant temperature water bath kettle, thereby forming a constant temperature water circulation system; an auxiliary electrode and a reference electrode are immersed in test medium of the medium cavity; and the auxiliary electrode, the reference electrode and the upper end face of an upper test piece are respectively connected with the corresponding port of a microprocessor controlled electrochemical workstation by conducting lines so as to form an electrochemical corrosion test system. The testing device and the method thereof can conveniently wear materials in the constant temperature test medium by wiggly corrosion, thereby much more factually and accurately testing the wiggly corrosive wear property of the materials in the specific corrosion medium; and the testing device and the method thereof provide much more accurate and reliable test basis for corresponding design, so that the properties and the service lives of equipment and apparatus can be increased.

The invention discloses a spherical contact type friction characteristic testing device under ultrasonic vibration. The device consists of a main movement unit, a loading unit and a dynamometer unit, wherein the torque output by a step motor is converted into axial pressure of a sliding table through a lead screw nut pair of a trapezoidal screw, and an upper sample and a lower sample which are arranged at the bottom of a piezoelectric micromachined ultrasonic transducer are contacted with each other, and certain pressure is applied to the lower sample; when the piezoelectric micromachined ultrasonic transducer is connected with an ultrasonic power supply, the upper sample produces ultrasonic frequency vibration with micron-grade amplitude in the horizontal direction or the vertical direction, the lower sample rotates together with a rotating platform and forms a friction pair with the upper sample, so that the friction characteristic of the spherical contact under ultrasonic vibration can be tested. The device can be used for accurately controlling the testing parameters, is high in degree of automation, and can be used for performing spherical contact friction experiments of various types of friction materials under different ultrasonic vibration frequencies and vibration amplitudes.

Apparatuses, processes, and systems for implementing techniques for determining characteristics of a papermaking fabric. The techniques include forming a representation of a portion of the surface of the fabric, with the representation showing the knuckles and pockets in the surface. The representation can be formed, for example, in pressure measurement film, in wax paper, or as a photograph. An image is generated from the representation, and the image is analyzed to determine characteristics of the surface of the fabric, such as knuckle sizes and pocket sizes. The depth of pockets in the fabric can also be determined. The techniques can be used in processes for analysing wear of a fabric, and for obtaining a fabric for making a paper product with a particular three-dimensional structure.

The invention provides a hydrodynamic pressure scouring test method and a device of bituminous mixture. The method comprises the following steps of: disposing a bituminous mixture test piece in a closed container and soaking in water; heating the water to a temperature to be simulated, keeping the temperature, and filling compressed air in the closed container to 0.68 to 0.7 MPa, i.e. applying positive pressure to the water and the test piece; releasing the pressure of the closed container to normal pressure, pumping the closed container to -0.095 to -0.1 MPa, i.e. applying negative pressure to the water and the test piece; and repeating steps to achieve simulation process of hydrodynamic pressure scouring of the bituminous mixture. The steps are respectively used for testing the determination index of water damage resistance of the bituminous mixture test piece. The invention can acquire the attenuation law of water damage resistance performance of the bituminous mixture and the migration law of bituminous in the mixture by applying hydrodynamic pressure to the bituminous mixture test pipe, simulating the actual condition of bituminous pavement and detecting the water stability of the bituminous mixture.

A test apparatus for measuring surface friction of a damping material such as brake pad insulator material includes a rotor configured to support the damping material for rotation therewith, an actuator pressurizable to apply axially-inward force to the damping material and a stator configured to support the actuator. A sensor determines the force applied to the actuator and a torque cell is axially aligned with the rotor for measuring torque of the rotor in relation to force applied to the damping material. The calculation of surface friction of the damping material is possible based on the measured load and torque. A method of measuring surface friction of a brake pad insulator material as well as a method using a brake dynamometer is also presented.

The invention discloses an oil drilling rod shock slide abrasion tester, including the fixture system, the transmission system and the excitation system, in which the said fixture system clamping fixes the tubular specimen, and the one end of the said transmission system equips the rod specimen corresponding to the tubular specimen, and the said transmission system drives the rod specimen rotating with the axis, and the said excitation system provides radial shock to the said rod specimen, to drive the rod specimen shocks the tubular specimen fixed in the fixture system at the same time of rotating, to realize the composite shock slide friction, and through the friction, transmit the torque to the rod specimen. The invention overcomes the limitation of the existing abrasion testers, and it can realize rod friction and abrasion study of shock slide composite working conditions of controlled shock load type under the condition of multiphase cycle lubricating medium, and it can not only realize multiphase media cycle of adjustable flow and variable components, but also realize the complex impact of adjustable shock size, controllable wave-type.

A tester used for simulating wear-out and vibration of main movable parts on internal combustion engine consists of master driving system formed by air cylinder, piston ring, piston, crankshaft, inlet and outlet of high pressure air; state monitoring system formed by pressure transducer and vibration transducer on bearing base, oil monitoring transducer and temperature transducer as well as vibration transducer on machine rack, and dynamic transducer on crankshaft. It is featured as utilizing high pressure air to simulate explosion pressure in air cylinder and to simulate operation condition causing wear-out and vibration of cylinder sleeve and piston ring pair in said engine.

A method for measuring road surface friction of a road surface uses a vehicle that moves across the road surface. An auxiliary independent wheel is interposed between the vehicle and the road surface. The auxiliary wheel is freely rotatable by movement of the vehicle and is toed in (skewed) with respect to a direction of travel of the vehicle so as to create an axial force on the auxiliary wheel. The axial force on the auxiliary wheel is isolated and measured while the vehicle moves across the road surface. The measured axial force is correlated with the road surface friction.

Substrate comprising a discrete first layer comprising a first surface, an opposing second surface and a polymeric first material, wherein the first layer has a thickness of from about 1 micron to about 1000 microns and a hardness of from about 10 to about 80 on the Shore A scale; a discrete second layer comprising a first surface, an opposing second surface, and a second material, wherein the second layer has a hardness of from about 1 to about 70 on the Shore OOO scale and a thickness of from about 0.001 cm to about 2.0 cm; a discrete third layer comprising a first surface and a third material, wherein the third layer has a hardness of from about 0 to about 90 on the Shore D scale; and wherein the second surface of the first layer is in substantially fixed and continuous contact with the first surface of the second layer; the second surface of the second layer is in substantially fixed and continuous contact with the first surface of the third layer; and wherein the ratio of the average thickness of the second layer to the average thickness of the third layer is from about 4:96 to about 25:75.

The invention provides a high temperature friction wear testing machine, belongs to the technical field of material wear tests, and solves the technical problems that the test precision of the testing machines in the prior art is low and the like. The high temperature friction wear testing machine comprises a frame. The frame is provided with a rotating shaft, and is also provided with a driving device. The top end of the rotating shaft is provided with a tray, the surface of the tray is coated with a thermal insulation layer, and a friction disk is fixed on the surface of the tray. The frame is provided with a bracket, and the bracket is provided with a beam. The beam is provided a force value sensor, and a loading rod is arranged at one end of the beam. A specimen holder is arranged at the bottom end of the loading rod. The high temperature friction wear testing machine comprises a high temperature furnace. The high temperature furnace is provided with a heating cavity, and the bottom end of the loading rod is inserted in the heating cavity. An opening is arranged at the bottom part of the heating cavity, the tray is located out of the opening, and the friction disk is located in the heating cavity. The high temperature friction wear testing machine has the advantages of high test precision and the like.

A variable-load cylinder-sleeve piston-ring frictional wear testing device is mainly composed of a main shaft motor, a guide rail, a sliding table, left and right uprights, a work table, a lever, a loading rod, a swing limiter, a load changer, an inner concave cambered-surface lower clamp and an outer convex cambered-surface upper clamp. An alternating force is generated by the load changer, and then is amplified by the lever to act on a test piece, thereby realizing radial loading of a piston ring to a cylinder sleeve; a variable load is measured in real time by a pressure sensor between theload changer and the lever; friction is measured by a foil gauge on the loading rod; the swing amplitude of the lever is reduced by the swing limiter; the loading rod comes into contact with the outer convex cambered-surface upper clamp through a ball pair to guarantee that the loading direction is vertically downward; the rotating speed of the motor is controlled by means of a program so as to carry out frictional wear tests at different speeds. The testing device is simple in structure, various in testing functions and high in accuracy.

The invention discloses a friction wear testing machine and comprises an abrading agent slot, a grinding steel wheel that is suspended in the abrading agent slot, a boosting lever that has a vertical arm suspended between the grinding steel wheel and a lateral wall of the abrading agent slot, a servo sand slot that has a sand discharging mouth and a transmission pipe, a servo spring loading mechanism that is connected with a horizontal arm of the boosting lever, a load sensor that is serially connected between the servo spring loading mechanism and the boosting lever and a temperature sensor that is arranged on the back of a sample. A main shaft of the grinding steel wheel is arranged on a bearing holder, connected with a torque sensor through a flexible coupler and connected with a frequency-varied speed-regulating drive motor, and a computer adjusts and detects the sand discharge amount of the sand slot, the rotating speed and the torque of the frequency-varied speed-regulating drive motor, and the loading capacity of the servo spring loading mechanism in real time, and can detect and record the rotational frequency of the grinding steel wheel and sample temperature in real time. The friction wear testing machine can detect and analyze the abrasion resistance and the frictional behaviour of hard alloy products under the conditions close to real working conditions.