High-low cycle compound fatigue test high-cycle amplitude measuring equipment and method

A technology of fatigue test and amplitude measurement, which is applied in the direction of measuring device, measurement of ultrasonic/sonic wave/infrasonic wave, testing of mechanical components, etc. It can solve the problems of not being able to measure blade tip amplitude, improve test accuracy, be easy to implement, and have high magnification Effect

Active Publication Date: 2014-02-19
廊坊智驰动力科技有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the displacement sensor can only measure the amplitude value of the object when the temperature is not high, but for the blade temperature in this test is about 200 ℃, and it is wrapped in the fixture, the traditional displacement sensor cannot measure the vibration amplitude of the blade tip at this time. There is an urgent need for a new method to accurately measure the tip amplitude

Method used

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  • High-low cycle compound fatigue test high-cycle amplitude measuring equipment and method
  • High-low cycle compound fatigue test high-cycle amplitude measuring equipment and method
  • High-low cycle compound fatigue test high-cycle amplitude measuring equipment and method

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Embodiment Construction

[0017] Such as figure 1 , 2 As shown, the first low-period load reinforcing mechanism 1 is connected to the force-transmitting main tension plate 3 through the first force-transmitting pin 2, and then transmits the force to the blade clamp 5 through the force-transmitting round bar 9 and the second force-transmitting top plate 10, wherein Rolling bearings 13 are installed on the force-bearing lugs 12 of the blade clamp to reduce power consumption, which is the connection relationship of the low-circumference force transmission device. The vibrator 20 simulates the high-cycle load by exciting the excitation point 17 on the high-cycle load transmission plate 16, which is the connection relationship of the high-cycle force transmission device.

[0018] During the measurement, the low cycle load is applied by the first low cycle load applying mechanism 1 and the second low cycle load applying mechanism 18, and then moves to the tongue and groove of the wheel disc 11 through the f...

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Abstract

Provided are high-low cycle compound fatigue test high-cycle amplitude measuring equipment and method. The equipment comprises a first low-cycle load stress application, a first stress transmission pin, a stress transmission main tension plate, a first pressing bolt, a blade clamp, a first stress transmission ejection plate, a high-frequency induction heating ring, a first rolling bearing, a stress transmission circular rod, a second stress transmission ejection plate, a turbine disc, a stress bearing convex lug, a second rolling bearing, a turbine blade, a second pressing bolt, a high-cycle load transmission plate, a second low-cycle load stress application mechanism, a second stress transmission pin, a vibration exciter, a needle tip and a telephoto microscope. The high-low cycle compound fatigue test high-cycle amplitude measuring equipment and method achieve the purpose that the amplitude of a blade tip can still be accurately measured even under a high temperature (200 DEG C).

Description

technical field [0001] The invention relates to the field of high-low cycle composite fatigue tests of mortise joints, in particular to a device and method for measuring blade tip amplitude in laboratory high-low cycle composite fatigue tests. Background technique [0002] The turbine is one of the core components of an aero-engine, and its life largely determines the life of the engine. The working environment of the mortise joint is very harsh. In addition to being impacted by high-temperature and high-pressure gas, it also bears low cyclic loads caused by centrifugal force and thermal stress, and high cyclic loads caused by aerodynamic loads on the blades. Therefore, the mortise and tenon joints are prone to fatigue cracks. [0003] In order to accurately determine the life of the tenon joint structure of the turbine, it is necessary to carry out the high and low cycle composite fatigue test of the tenon joint in the laboratory. To this end, the laboratory proposed a fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H9/00G01M13/00
Inventor 胡殿印王荣桥魏佳明刘华伟樊江
Owner 廊坊智驰动力科技有限公司
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