The invention relates to the technical field of aero-engine high-temperature stress testing, in particular to a method for laying a high-temperature strain gauge, which comprises the following steps: S1, purifying the surface of a test piece; s2, roughening the surface of the test piece: roughening the to-be-mounted surface of the test piece by sand blasting, and protecting the non-mounting part of the surface of the test piece; s3, a spray gun is debugged, and technological parameters are set; s4, strain gauge installation: laying is carried out in a flame spraying mode; s5, conducting wire welding; and S6, inspecting the installation quality of the strain gauge. And sand blasting is adopted for coarsening, and the substrate shows high bonding strength. The high-temperature strain gauge is installed in a flame spraying mode, and compared with a ceramic adhesive pasting mode, the flame spraying mode has the advantages that the flame spraying mode is not limited by the size of a test piece, spraying fixing on a light and thin blade can be achieved, the operation process is simple, and the strain gauge is well protected when the strain gauge works.
本发明涉及航空发动机高温应力测试技术领域,尤其涉及一种高温应变计敷设的方法,包括以下步骤:S1、试件表面净化;S2、试件表面粗化:采用喷砂对试件表面待安装表面进行粗化,试件表面非安装部位进行保护;S3、喷枪调试,设定工艺参数;S4、应变计安装:采用火焰喷涂的方式进行敷设;S5、导线的焊接;S6、应变计安装质量检查。采用喷砂进行粗化,基底则显示出较大的结合强度。采用火焰喷涂的方式进行高温应变计安装,相对于采用陶瓷胶粘贴的方式,其特点是:不受试件尺寸限制,可以实现在轻薄叶片上的喷涂固定,操作工艺简单,应变计工作时对应变计的保护较好。
Method for laying high-temperature strain gauge
一种高温应变计敷设的方法
22.11.2024
Patent
Elektronische Ressource
Chinesisch
IPC: | G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen / G01L Messen von Kraft, mechanischer Spannung, Drehmoment, Arbeit, mechanischer Leistung, mechanischem Wirkungsgrad oder des Drucks von Fluiden , MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE / G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen |
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