Optimization process of strain gauge installation method
An installation method and technology of strain gages, applied in measuring devices, devices for coating liquid on surfaces, force/torque/work measuring instruments, etc., can solve problems such as changing the stress state of the test piece, and improve the success rate and uniformity. Optimized, combined with the effect of strength optimization
Active Publication Date: 2020-11-03
AECC HUNAN AVIATION POWERPLANT RES INST
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Problems solved by technology
When the test piece is the type of turbine blade of an aero-engine, the preprocessing of traces such as dovetail grooves on the surface of this type of test piece will change the stress state of the test piece. If the above-mentioned existing optimized processing method is not adopted, the existing There are no other installation methods for test pieces suitable for high temperature environments above 600°C in the technology
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[0042] Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and that the description and drawings therein are illustrative in nature and not intended to limit the present invention. invention.
[0043] In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of example different exemplary structures, systems, and embodiments in which aspects of the invention may be implemented and steps. It is to be understood that other specific arrangements of components, structures, exemplary means, systems and steps may be utilized and structural and functional modifications may be made without departing from the scope o...
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The invention discloses an optimization process for the mounting method of a strain gauge. The optimization process comprises the following steps: arranging a standard part of which the material is the same as that of a test piece to be tested; grinding the mounting area where the strain gauge of the standard part is mounted so as to roughen the surface of the mounting area, and cleaning the mounting area; coating the surface of one side of the standard part with an active coating material layer by layer so as to form a bonding layer and a precoating layer in sequence; coating the precoating layer with the active coating material to form a final coating; testing the bonding strength of each of the coatings formed on the standard part by coating; according to the testing results of the bonding strength, performing optimization and adjustment on the spraying parameters of each of the coatings; and repeatedly and iteratively carrying out the steps in sequence until the testing results ofthe bonding strength meet the preset process requirements, and taking the spraying parameters after final optimization and adjustment of each of the coatings as the spraying parameters of each of thecoatings formed when the strain gauge is mounted on the test piece, and therefore the mounting method of the strain gauge is optimized.
Description
technical field [0001] The invention relates to the field of research and development and testing of aero-engines, in particular to an optimization process of a strain gauge installation method. Background technique [0002] In the development process of existing aero-engines, the stress measurement of high-temperature components (test pieces) used in a temperature environment of 600°C-1000°C mainly relies on high-temperature strain gauges. The installation area of the test piece is treated, and then the prefabricated coating is sprayed on the test piece installation area, and then the high temperature strain gauge is fixed and covered on the prefabricated coating. For the optimization process of the installation method of the above-mentioned strain gauge, you can refer to the Chinese invention patent "Process for Improving the Bonding Strength of Substrate and Ceramic Coating" (CN 102191446B), which mainly pre-processes dovetail grooves on the surface of the test piece. ...
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IPC IPC(8): B05D7/00B05D3/12B05D3/10G01L5/00
CPCB05D3/10B05D3/12B05D7/58G01L5/00
Inventor 文华张娟黄臻荣张勇夏清郭天才高俊
Owner AECC HUNAN AVIATION POWERPLANT RES INST