4966results 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.

The invention provides a multifunctional vacuum friction and wear testing machine, which not only can simulate special environmental atmospheres such as vacuum, radiation and corrosion, but also can conduct tribology tests in a relatively wide speed and load range by using various contact manners (ball-disc and pin-disc). The multifunctional vacuum friction and wear testing machine mainly comprises a vacuum system, a friction and wear system, a power transmission system, a control system, and the like, wherein the friction and wear system comprises a lever structure (22) used for fixing a test sample fixture (20) and capable of freely rotating in a horizontal direction and a vertical direction; the lever structure (22) comprises a cantilever beam (18) and a vertical arm (23) which are arranged in a perpendicular manner; the cantilever beam (18) is connected with the vertical arm (23) through a two degree of freedom bearing structure (17); positions of the cantilever beam (18) and the vertical arm (23) can be adjusted in the horizontal direction and the vertical direction through the control of a manipulator (15) and a hand wheel structure (13), so that the test sample fixture (20) can accurately move within two degrees of freedom; and a temperature sensor (2) and a pressure sensor (3) are mounted on the test sample fixture (20), so as to detect/monitor friction coefficients and temperature variations during the tribology tests.

The tester comprises: a clamp (22) to fix the upper sample (23) on its arc groove above the lower sample (25) connected to the middle of supporting shaft (37) by a flat key, a oil bath (26) to accommodate part (25), and a pressure bearing (20) with outside circle contacted to the upper arc surface of (22). This invention can protect the failure condition, and cuts wear test time.

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.

The invention is a sliding way sleeve abrasion testing machine, which comprises a transmission system, an excitation system, a clamping system and a rack. A first test piece is fixed and clamped on a rotating transmission shaft of the transmission system; a second test piece is arranged corresponding to the first test piece on the clamping system and the transmission system drives the first test piece to rotate around the axis. The rack is provided with at least one sliding platform and the transmission system is arranged on the sliding platform. The excitation system can drive the sliding platform to vibrate up and down to drive the first test piece to impulse the second test piece while rotating. The testing machine overcomes the disadvantage of the prior abrasion testing machine which is incapable of satisfying the requirement on studying the impulse and sliding composite abrasion test between petroleum the drilling rod and the sleeve under the conditions of circulating medium and can perform systematic investigation on the impulse and sliding composite abrasion of various materials of large dimension between the petroleum the drilling rod and the sleeve.

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.

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 analyzing wear of a fabric, and for obtaining a fabric for making a paper product with a particular three-dimensional structure.

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.

A device and method for scratch and/or mar testing the surface of a material specimen. In an embodiment, the scratch testing device comprises a scratching member. In addition, the scratch testing device comprises a carriage operable to move the scratching member. Further, the scratch testing device comprises a load mechanism, wherein the load mechanism applies a load to the scratching member.

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 testing device for simulation and real-time detection of erosion of thermal barrier coatings of turbine blades, belonging to the field of simulation devices in a special service environment. The testing device comprises an erosion particle feeding system, a test testing platform (1), a temperature test system, an acoustic emission nondestructive testing system, a control platform and the like. An erect fixed shaft (101) is arranged on the test testing platform (1) and is connected with a horizontal supporting shaft. The testing device can be used for simulating the erosion service environment in which hard particles in a high-performance aero-engine repeatedly impact thermal barrier coatings of turbine blades due to the driving of airflow. By controlling the parameters such as erosion speed, angle, size and the like of erosion particles, the process that the coatings are eroded by different hard particles in the service process is realized and the real-time test and analysis of data, such as the temperature, the surface topography evolution, the interfacial oxidation of a sample and the like can be synchronously realized. The device can provide an important test platform for effectively assessing the erosion failure process and the failure mechanism of coatings of turbine blades in the special service environment.

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.