Material performance testing system under fixed multi-field coupling action in supergravity environment

Abstract

The invention discloses a material performance testing system under the fixed multi-field coupling action in a supergravity environment. The material performance testing system comprises a hoisting sealed cabin, a bearing frame, a high-temperature furnace, a mechanical testing device and a buffer device; the bearing frame and the high-temperature furnace are fixedly installed inside the hoisting sealed cabin, the bearing frame covers the high-temperature furnace, the buffer device is installed at the bottom inside the high-temperature furnace, the upper end and the lower end of the mechanical testing device are connected to the top of the bearing frame and the bottom of the high-temperature furnace, and the sample is connected and installed at the tail end of the mechanical testing device. The material performance testing system solves the problem of material dynamic performance testing under the coupling action of volume force-surface force-temperature under the high-speed rotation state, and is simple in structure, convenient to operate, safe and reliable.

Description

technical field [0001] The invention relates to the technical field of material performance testing, in particular to a material performance testing system under the coupling action of fixed body force-surface force-temperature in a supergravity environment. Background technique [0002] As the thrust-to-weight ratio of modern aero-engines increases and the number of turbine stages decreases, the gas inlet temperature before the turbine has developed from 1400-1500K in the 1970s to 1600-1750K at the beginning of this century. Up to 2000-2200K, which puts forward higher performance requirements for the core hot end components of the engine. As one of the key components of the hot end components, the working blades of the high-pressure turbine work under coupled loading conditions such as high temperature, high pressure, high speed, and alternating load for a long time during service. [0003] When in service, the working blades of the turbine rotate around the axis of the en...

AI Technical Summary

Problems solved by technology

The thermal stress generated by thermal load is closely related to geometric constraints. The more geometric constraints, the greater the thermal stress, especially the stress concentration at the air film hole, which will significantly reduce the fatigue life of the blade.

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