Device for combined testing
(57) Abstract:Use: the invention relates to testing of electronic equipment (REE), components of its components (ERIE), and other objects on the effects of mechanical and environmental factors. The essence of the invention lies in the fact that the table of the vibration exciter 1 is mounted a cylindrical adapter 2, the upper end of which is fastened experience (OE) REA (ERIE) 3, and the circumference of the side surface of the adapter is the rubber diaphragm 4, which is made in the form of a ring and its outer circumference is fixed to the hole of the stationary cylindrical chamber 5 located in its lower part, and in the upper part of the cylindrical chamber has an opening that can be aligned with the openings of the heat chamber 6 low temperature heat chamber 7 high temperature transfer mechanism, in which through flexible hoses are brought low and high temperature. The transfer mechanism made in the form of segmental construction. On its outer surface cut teeth that engages with the wheel mounted on the shaft of a reversible motor, in which there is a change cameras on the STV will improve the efficiency of trials of CEA and ERIE on the resistance to mechanical and climatic factors. 3 Il. The invention relates to testing of electronic equipment (REE), components of its components (ERIE), and other objects on the effects of mechanical and environmental factors.To assess persistence REA and ERIE to mechanical and climatic factors carry out the appropriate tests, regulated domestic, foreign and international standards, special test equipment (IO) [1,2].One of the most hard types of tests CEA, and ERIE are tested for vibration and thermal shock, which are held separately on a special IO .At the bottom of the device for testing products on heat stroke is a low temperature heat chamber (TNT), in the upper part of the heat chamber high temperature (TW), and in the middle part - cylindrical chamber with an opening for the test samples. This camera is provided by the test area, in which are placed the samples.By turning the cylindrical chamber (test area does not rotate) and dense agree its aperture with the apertures TNT and TW, respectively, obtained low-temperature and viscotester the high temperature.In terms of aircraft (mostly aircraft), these effects on CEA and ERIE operate simultaneously (fast climbing aircraft or rapid decline), which in some cases leads to their failure.So now becomes important to model this type of combined effects in laboratory conditions.The aim of the invention is to increase the efficiency of testing by ensuring that the combined effect of vibration and thermal shock, which allows a user to zoom in test mode to real operating conditions, and to identify potentially unreliable nodes of the object. For this to the table vibrator is mounted a cylindrical adapter on the upper end of which is fastened experience(OE) REA (ERIE), and the circumference of the side surface of the adapter is a rubber diaphragm, which is made in the form of a ring and its outer circumference is fixed to the hole of the stationary cylindrical chamber located in its lower part, and in the upper part of the cylindrical chamber is made of an aperture that can be aligned with the openings of the chambers, in which the through flexible hoses are fed high and low temperature. the which engages with the wheel, mounted on the shaft of a reversible motor, in which there is a change of TNT and TW over the openings of the cylindrical chamber, and therefore, the temperature change in her.In Fig. 1 shows the proposed device and the structural arrangement of its mechanisms, General view; Fig.2), the same cross-section along the axis of the vibrator of Fig.3 is a section along a vertical plane.The device comprises a vibration exciter 1 pinned on his Desk cylindrical adapter 2, the upper end of which is attached test item 3 (REA or ERIE). The circumference of the side surface of the adapter 2 is rubber sealed aperture 4, which is made in the form of a ring and is attached to its external circumference to the hole of the cylindrical chamber 5 located in its lower part. Aperture 4 acts as a heat insulator. The space inside the chamber 5 is the test zone.In the upper part of the chamber 5 has an opening that is designed for tight coordination with the openings of the chamber 6 and the chamber 7. The camera 5 is rigidly connected with the base 8 of the device. Camera 6 and 7 are fixed to the moving mechanism 9, which is mounted on the upper surface of the base 8 with the possibility of prostroke.In one of the walls of the chambers 6 and 7 and the adjacent side surface of the mobile mechanism 9 is made of the total hole to which on the outer side of the mobile mechanism 9 is connected insulated flexible hoses 12. Through the hose 12 into the chambers 6 and 7 serves cold and hot air.On the upper surface of the movable mechanism 9 cut teeth that engages with the wheel 14 fixed on the shaft of the reversible motor 15, rigidly connected with the farm 16 installed on the basis of laboratory premises, where a test is performed (in the drawing the location of the farm 16 on the basis of premises not shown).To the side surface of the camera 5 and the base 8 is attached arc plate 17 so that when moving mobile mechanism 9 openings TNT 6 and TW 7 tightly aligned with their outer surfaces in order to ensure thermal insulation (remote control compartment and switchboard on figures not shown).The proposed device operates as follows.Before starting the test run the engine 15 as long as the mechanism 9 will not occupy a position that allows the operator to have easy access to the adapter 2 to install the Oia openings camera 5 and 6.In chambers 6 and 7 from the cooling and heating devices through the hose 12 is supplied with hot and cold air and set the temperature depending on the degree of hardness tests. Product 3 is kept in the chamber 6 during the time required to reach thermal equilibrium.Starts up the vibration exciter and simultaneously started the engine 15 as long as the mechanism 9 will not occupy a position in which the openings of the chambers 7 and 5 will be tightly coordinated. The vibration exciter 1 is turned off, and the product 3 is maintained in the chamber 7 during the time required to achieve thermal equilibrium (tests can be built so that the product 3 within the specified time will be first subjected to the combined effect of vibration and low temperature, when the product of thermal shock vibration exciter 1 is turned off, and then a test is performed on the combined effect of vibration and high temperature).Similarly, the device will work when the work operations, following the reverse sequence. The number of test cycles is set in the normative-technical documentation on the test item 3.DEVICE FOR COMBINED TESTING of OBJECTS containing the base, set the camera tool temperature changes, vibration exciter associated with camera by means of a sealed diaphragm, characterized in that it has established on the basis of additional Luggage together with the temperature changes and the mechanism for moving the Cam drive motor gear, a base and a camera made in the form of the mating segment designs, camera mounted for movement along the base and fixing their relatively tight aperture, with each chamber is communicated with the corresponding means of temperature changes through flexible hoses.
FIELD: testing engineering.
SUBSTANCE: device comprises high-frequency generator and inductor connected in series, device for control of heating, system for air supply, device for external cooling, measuring system, unit of contact temperature gauges, and device for bottom clamping connected with the end section of the blade. The device is provided with a means for axial loading, device for top clamping connected with the shelf of the end section of the blade, device for control of axial loading, first dynamometer, device for applying torque, which has the second dynamometer, device for information input, load-bearing frame, contactless temperature gauge, generator of nonstandard signals, oil pumping system, and device for internal cooling.
EFFECT: enhanced reliability of testing.
7 cl, 1 dwg
FIELD: measuring technique.
SUBSTANCE: method comprises heating the heat-shield structure from one side up to a high temperature, cooling the structure, applying marker dots on the section of the outer surface under study, cutting the axisymmetric specimens of the heat-shield structure, applying marker dots on the side of the specimen at a given distance from the inner surface, cutting the specimen over the planes perpendicular to its longitudinal axis and passing through the marker dots into pieces, subsequent heating of the pieces in the atmosphere of an inert gas, recording the change of weight of the pieces, recording the temperature of the beginning of the decrease of weight of each piece, and judging on the spatial temperature distribution from data obtained.
EFFECT: expanded functional capabilities.
SUBSTANCE: stone sample saturated with water is frozen to a specified temperature. The sample is unfrozen and deformation is measured. Before freezing, the threshold load which accounts for long-term compression strength of the sample is measured using a nondestructive method. After several thermal cycles, residual deformation of the unfrozen sample is measured in the direction perpendicular the previous compression. A least residual deformation is achieved through periodical compression of the sample in the current direction from zero to a load which exceeds the threshold by not more than a third. The number of thermal cycles required for reducing long-term strength to the required value is determined by repeating these operations.
EFFECT: reduced labour input and increased efficiency.
SUBSTANCE: method of determining heat resistance of bentonite clay is characterised by that, a nomograph which reflects dependency of temperature of the second endothermal effect and heat resistance of bentonite clay from contained structural iron is constructed first. For this purpose samples of bentonite clay from known deposits are analysed. The samples are tested in a derivatograph. Derivatograms with differential thermo-weighted (DTW) and differential thermal (DT) curves are obtained, from which temperature of the second endothermal effect is determined depending on structural iron contained in the samples. Heat resistance of the samples is determined depending on structural iron contained in the samples. From the said two curves, the said nomogram is constructed, which is then used for subsequent determination of heat resistance of the analysed bentonite clay; a wet ground up sample is tested in a derivatograph by heating followed by drying. Derivatograms with differential thermo-weighted and differential thermal curves are obtained, from which temperature of the second endothermal effect is determined and heat resistance of the analysed bentonite clay is determined from the said nomogram.
EFFECT: cutting on time and simplification of the process of determining heat resistance.
SUBSTANCE: device has a cylindrical housing, a horizontal partition wall and sensors for monitoring and controlling tests. Inside the cylindrical housing, which has a flat bottom and an air-tight cover which is fixed by bolts and nuts in the top part, there is a drum which is mounted on the cover inside the housing. The horizontal partition wall is placed in the bottom part of the drum and is in form of a perforated disc whose perforations are in form of calibrated orifices lying on a circle, having along their edge calibrated channels for passage of heating medium. Inside the drum there is an additional horizontal partition wall with calibrated orifices which are exactly as those in the perforated disc. Sample pipes are fitted in the perforations of the disc and are fixed on the cover of the housing, and there are vertical partition walls between the pipes. Pipes with a smaller diameter are fitted inside each sample pipe and are fixed in a dispensing receiver and have in their top part connecting pipes for outlet of cooling medium and discharge pipes with calibrated devices on them. In the bottom part of the housing under the perforated disc there is a pipe with a diffusion nozzle connected to a cylindrical diffuser and a connecting pipe for inlet of heating medium and a system of chambers with a connecting pipe at the bottom for outlet of the heating medium.
EFFECT: high quality and accuracy of tests and efficiency thereof.
SUBSTANCE: invention relates to space hardware testing, namely to installations for simulation of spacecraft components operation modes. Installation for vacuum thermocycling of photoconverter panels includes vacuum chamber consisting of two communicating compartments. In one compartment, two cryopanels are installed in parallel with possibility to place tested panel between them. In the second compartment there is thermal panel made as assembly of filament lamps. The cryopanels and thermal panel are positioned vertically, and thermal panel compartment is placed over cryopanel compartment. The cryopanels are installed with possibility of additional placement of thermal panel between them. The thermal panel is provided with reciprocating mechanism of vertical action and thermal insulation at the side facing cryopanel.
EFFECT: higher accuracy of thermal simulation of outer space conditions.
3 cl, 4 dwg
FIELD: testing equipment.
SUBSTANCE: device comprises a body with a flange joint and tested samples in the form of tubes. Tested samples in the amount of two arranged coaxially one inside the other to form a circular gap between them, are fixed inside separate parts of the body, placed on a header of hot water and a header of drainage of a mixture of hot and cold water. Headers by means of pipelines are connected to a heater and a refrigerator. The outer surface of the outer tube and the inner surface of the central tube are coated with a layer of insulation. In the upper part of the body there is a nozzle and a valve for supply and control of cooling water flow.
EFFECT: elimination of medium working pressure impact at process of crack formation, providing for pure crack formation only due to pulsation of medium temperature, which results in getting absolutely accurate testing results.
FIELD: test equipment.
SUBSTANCE: stand includes base, coaxial sample grips mounted on the base, sample loading device connected to the grips, mechanical sample processing device and platform for processing devise movement against grip axes. Additionally the stand features aggregate for grip turning around grip axis, consisting of drive with two gear wheels bearing the grips, on the drive shaft.
EFFECT: extended functionality of stand due to test performance at changing directions of mechanical processing against radial directions of sample.
FIELD: testing equipment.
SUBSTANCE: invention relates to testing equipment, to tests of mostly samples of rocks. The bench comprises a base, sample grips installed on it coaxially, a device to load a sample with an axial mechanical load, a mechanism for interaction with the sample, a platform for movement of the mechanism along the axis of the grips, a platform for movement of the mechanism in the vertical direction perpendicularly to the axis of the grips and a platform for movement of the mechanism in the horizontal direction perpendicularly to the axis of the grips. The mechanism for interaction with the sample is made as milling.
EFFECT: expansion of functional capabilities of a bench by provision of research with gradual removal of material sample without removal of mechanical load.
FIELD: test equipment.
SUBSTANCE: device includes gas generator and operation part with structural material sample, connected in series. Gas generator features removable mixing head. Cylindrical combustion chamber of the gas generator features ignition device and orifice plate. Operation part includes interconnected clamping flange with central hole and flange holding a sample. Central longitudinal axes of flange and sample are coincident. Internal cylindrical surface of clamping flange forms an annular slot with the sample surface, the slot joins a cavity ending with output nozzle through end outlet holes in the flange around sample.
EFFECT: possible maintenance of required pressure-heat loading modes for samples, modelling natural thermal stress state of structural materials of various aggregates operating in alternate heat modes.