A high-temperature strain gauge installation process reliability verification device

Abstract

The invention discloses a high-temperature strain gauge installation process reliability verification device, which includes a motor, a speed-increasing box, a test plate, a lead, a high-temperature heating furnace, a data acquisition system, a number of bearing brackets and couplings, a motor and a speed-increasing box Connected by a coupling, the speed-increasing box is connected with the test disk through the coupling, the test disk is set inside the high-temperature heating furnace, the bearing brackets are set at both ends of the test disk and the front end of the lead, the signal acquisition system is connected with the lead, the present invention It solves the problem of multiple rounds of tests that need to be carried out in the whole aero-engine, and becomes the assessment and verification of the high-temperature strain gage installation process parameters under different test conditions in the laboratory environment, so that the existing process can be found in advance. Insufficient parameters, make improvements, quantify process parameters, and effectively improve the survival rate of high-temperature strain gauges.

Description

technical field [0001] The invention belongs to the technical field of high-temperature and high-rotational speed testing of aero-engines, and in particular relates to a high-temperature strain gauge installation process reliability verification device. Background technique [0002] The turbine rotor blade is a key part of an aero-engine, and its vibration stress in the working environment needs to be measured in the development of an aero-engine. At present, the vibration stress of turbine rotor blades is usually measured by high-temperature strain gauges. The most important factors affecting the survival rate of strain gauge tests are turbine rotor speed and ambient temperature. Although there are corresponding process regulations for installing high-temperature strain gauges, they are only general procedures. According to the actual test conditions of different engines, quantitative adjustments to the process parameters are still required. If this work is carried out thr...

AI Technical Summary

Problems solved by technology

Although there are corresponding process regulations for installing high-temperature strain gauges, they are only general procedures. According to the actual test conditions of different engines, it is still necessary to make quantitative adjustments to the process parameters.

If the work is carried out through multiple rounds of tests on the complete engine, it will not only waste manpower and material resources, but also delay the progress of the engine test

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