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A Measuring Method for Composite Fatigue Test

A measurement method and technology of fatigue test, applied in the field of fatigue test, can solve problems such as no method of measuring force, complex stress on the main shaft of aircraft engine, etc., and achieve the effect of easy implementation

Active Publication Date: 2016-05-18
SUZHOU DONGLING TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, due to the complexity of the force on the main shaft of the aircraft engine, there is no relevant force measurement method for reference.

Method used

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  • A Measuring Method for Composite Fatigue Test
  • A Measuring Method for Composite Fatigue Test
  • A Measuring Method for Composite Fatigue Test

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Embodiment Construction

[0020] The technical solution in the embodiment will be specifically, clearly and completely described below in conjunction with the drawings in the embodiment.

[0021] A measurement method of composite fatigue test can be used as Figure 1-2 The system shown is implemented, which includes: a worktable 1 for fixedly installing a test piece 5 (engine spindle) for testing, a first force sensor 2 installed on one side of the worktable 1 in the length direction, and a first force sensor 2 installed on the width of the workbench 1 The second force sensor 3 on one side of the direction and the third force sensor 4 installed on the bottom end surface of the worktable surface 1 .

[0022] The implementation process of the measurement method of this composite fatigue test comprises the following steps:

[0023] see Figure 1-2 As shown, one end of the test piece 5 is rigidly fixed vertically at the center position on the worktable 1. Preferably, two first force sensors 2 are symmetr...

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Abstract

The invention discloses a method for measuring a composite fatigue test. The method includes the following steps that a test specimen is fixed to a working table; the side face, in the length direction, of the working table, the side face, in the width direction, of the working table and the bottom end face of the working table are respectively provided with one force sensor; a rectangular coordinate system is built in the center of the working table, and three coordinates are an X axis in the length direction of the working table, a Y axis in the width direction of the working table and a Z axis vertical to the working table respectively; composite force for simulating the test specimen in the work state is exerted on the top end of the test specimen; a mathematic model is built, force in the X axis direction is shown in the instruction, force in the Y axis direction is shown in the instruction, force in the Z axis direction is shown in the instruction, the bending moment in the X axis direction is calculated according to the formula shown in the instruction, the bending moment in the Y axis direction is calculated according to the formula shown in the instruction, and the torque in the Z axis direction is calculated according to the formula shown in the instruction. Values of force sensed by the force sensors are calculated through the mathematic model, the composite force borne by the test specimen is measured, and the measurement method is easy to carry out, practical and effective.

Description

technical field [0001] The invention relates to the technical scope of fatigue test, in particular to a measuring method of composite fatigue test. Background technique [0002] With the rapid development of aviation and aerospace technology, the quality and performance requirements of key parts are getting higher and higher. For example, the main shaft of an aircraft engine is one of the key parts of the aircraft. It operates under the conditions of high speed, high temperature and complex stress. Its quality and performance directly affect the performance, life and reliability of the engine. In order to ensure the quality and performance of the engine main shaft, it must have sufficient fatigue strength during operation. However, in order to ensure that the engine main shaft has sufficient fatigue strength, in the process of its trial production and mass production, it is necessary to carry out simulated measurement of its fatigue strength to evaluate whether its fatigue ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00
Inventor 仝宁可王述成
Owner SUZHOU DONGLING TECH
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