{"id":3700,"date":"2021-11-27T21:47:38","date_gmt":"2021-11-27T21:47:38","guid":{"rendered":"https:\/\/tribologie-mannheim.de\/equipment\/est\/"},"modified":"2022-12-09T09:24:55","modified_gmt":"2022-12-09T09:24:55","slug":"est","status":"publish","type":"page","link":"https:\/\/tribologie-mannheim.de\/en\/equipment\/est\/","title":{"rendered":"EST"},"content":{"rendered":"\t\t
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<\/p>\n

Engine Simulation Test System (EST)<\/h2>\n

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The SRV\u00ae technology platform from Optimol Instruments has a modular structure. This allows the configuration to be seamlessly adapted to individual testing requirements. To further optimize compatibility with specific test and analysis projects, a wide range of specimens, specimen holders and adapters are available. Based on the proven SRV\u00ae technology platform, simulations, measurement and testing projects as well as tribological analyses can be carried out in an enormous variety.<\/p>\n

The engine simulation test system is based on the SRV4, supplemented by the RAI – or nVCT test system, which allows highly accurate recording of wear rates in the range of nanometers per hour using radioactively marked test specimens….<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Test principle of the basic device Oscillation<\/b><\/td>\n<\/tr>\n
The two test specimens installed in the test chamber (e.g. ball on disc) are pressed onto each other with a specified normal force. The upper specimen oscillates on the lower specimen. Frequency, sliding distance, test force, test temperature and test duration are specified. The friction forces are continuously measured by a sensor. The friction coefficient is automatically calculated and recorded during the entire test duration. Wear is measured and recorded during and\/or after the test.<\/td>\n<\/tr>\n
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Testing principle of the Rotation option<\/b><\/td>\n<\/tr>\n
The rotation module is an alternative motion system to oscillation. Its main components are the rotary motor, the motor for the displacement of the block (radius) and the multi-channel sensor for measuring torque and friction. After removal of the oscillation pick-up block, a device with rotating disk is installed. The counterbody (e.g. pin\/ball\/disk) is installed in the existing test load system by means of an adapter. The triborelevant variables of frictional torque and frictional force are measured via a multi-channel sensor system. The rotation block is equipped with a heater and a temperature sensor.<\/td>\n<\/tr>\n
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Wear measurement with nVCT\u00ae radionuclide technology <\/b><\/td>\n<\/tr>\n
nVCT\u00ae opens up the possibility of measuring nano-wear using radionuclide technology with high precision and efficiency already in the SRV\u00ae model test environment. Radionuclide technology (RNT) is a long-established method for continuous measurement of wear. Due to its complexity, it could previously only be used effectively on engine test benches. <\/td>\n<\/tr>\n\n<\/tbody>\n<\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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With the development of the nVCT\u00ae technology by AC2T research GmbH, the analysis possibilities of the RNT method could be opened up for the first time for application in the model testing environment of the SRV\u00ae test system. These analysis capabilities primarily include continuous measurement of nano-scale wear, the 2-isotope technique, determination of realistic wear rates as a basis for extrapolating system life, differentiation between run-in and constant wear, and the possibility of mechanism-based wear investigations. <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Test bench parameters<\/strong><\/span><\/td>\n <\/td>\n <\/td>\n<\/tr>\n
Frequency\/speed<\/td>\n1 to 500 Hz \/ 0 – 2000 1\/min.<\/td>\n <\/td>\n<\/tr>\n
Stroke\/radius<\/td>\n0.1 to 5 mm (at max. 50 Hz) \/ 0 – 42 mm<\/td>\n <\/td>\n<\/tr>\n
Load<\/td>\n1 to 2,500 Newton<\/td>\n <\/td>\n<\/tr>\n
Temperature<\/td>\n-40 to 900 \u00b0C<\/td>\n <\/td>\n<\/tr>\n
Ambient medium<\/td>\nNitrogen, synt. Air, conditioned air 10 – 90 % rel. F. <\/td>\n <\/td>\n<\/tr>\n
Movement type \/ form<\/td>\nGlide (oscillation)<\/td>\n <\/td>\n<\/tr>\n
Friction conditions<\/td>\nSolid, boundary and mixed friction<\/td>\n <\/td>\n<\/tr>\n
Contact geometry<\/td>\nPoint, line and surface contact<\/td>\n <\/td>\n<\/tr>\n
Measured variables<\/td>\nFriction value, linear wear amount, opt. Assessment, contact resistance<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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DIN tests<\/h4>\n