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Test setup for blade load application

A test device and blade technology, applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, instruments, etc., can solve the problem of inability to simulate the load distribution of the blade, and achieve the effect of real results and good evaluation

Active Publication Date: 2019-04-23
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] What the present invention aims to solve is the technical problem that the actual load distribution of blades cannot be simulated in the prior art

Method used

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  • Test setup for blade load application
  • Test setup for blade load application
  • Test setup for blade load application

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Embodiment Construction

[0026] In order to make the purpose, technical solutions and advantages of the invention clearer, the technical solutions in the invention will be clearly described below in conjunction with the accompanying drawings in the invention. Obviously, the described embodiments are part of the embodiments of the invention, not all of them. Example. Based on the embodiments of the invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the invention.

[0027] In the description of the present invention, unless otherwise specified, "plurality" means two or more. The orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or It should not be constru...

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Abstract

The invention relates to the technical field of a blade testing device, and particularly relates to a testing device for blade load application. The device comprises a first stretching unit, a second stretching unit, a first clamping unit and a second clamping unit; the first stretching unit is connected with one end of a blade to be tested in the radial direction by the first clamping unit; the second stretching unit is connected with the other end of the blade to be tested in the radial direction by the second clamping unit; in a direction perpendicular to the radial direction of the blade to be tested, relative positions of the first stretching unit and the first clamping unit are adjustable. According to the testing device disclosed by the invention, by regulating the position of the first stretching unit relative to the first clamping unit in the direction perpendicular to the radial direction of the blade, the first stretching unit can apply a torque to a part of the blade, which is to be tested, by applying an eccentric load to simulate actual stress distribution of the blade, so that a result of a blade fatigue test is more real and accurate, thereby better evaluating blade fatigue life and improving safety.

Description

technical field [0001] The invention relates to the technical field of blade testing devices, in particular to a testing device for blade load application. Background technique [0002] The geometry of aeroengine turbine blades is complex. The main structure includes the blade body, blade root and tenon, and the blade body includes the blade pot and the blade back. As the core part of the aero-engine, the aero-engine turbine blade directly affects the safety and reliability of the aero-engine. The fracture failure is mainly caused by low cycle fatigue or creep fracture, so it is of great significance to carry out the fatigue life test of turbine blades for the evaluation of turbine blade life. The working environment of aeroengine turbine blades is extremely harsh, and they need to bear time-varying loads such as centrifugal loads, aerodynamic loads, thermal loads, and vibration loads at all times, which makes the stress distribution of the blades extremely uneven. difficu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08
CPCG01N3/08G01N2203/0017
Inventor 石多奇周明南李振磊杨晓光齐红宇
Owner BEIHANG UNIV