Bird impact load testing device and method

A load test and bird strike technology, which is applied in the direction of measuring devices, impact tests, machine/structural component tests, etc., can solve the problem that the sensor cannot be used for static measurement, and achieve the effect of simple structure, easy operation and good maintainability

Pending Publication Date: 2021-03-16
HARBIN
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  • Description
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Problems solved by technology

This type of sensor cannot be used for static measurement, because the charge after the external force can only be preserved when the circuit has an infinite input impedance, but the actual application situation is not like this, so it is determined tha

Method used

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  • Bird impact load testing device and method
  • Bird impact load testing device and method

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Example Embodiment

[0023]In order to avoid a large error in the test results in the bird hit trial due to temperature factors. This paper proposes a simple mechanical device structure.

[0024]According to an embodiment of the present invention, a bird hit load test device includes: a supporting seat, a first elastic member, a bird impact support surface, a second elastic member, a compressed amount measuring support surface, a first chain, a second chain, a gear mechanism The ruler, wherein the support holder includes a fixed surface, the fixing surface is a plane of the vertical direction; the first end of the first elastic member is fixed to the upper end of the fixed surface; the other end of the first elastic member is fixed to the top of the bird impact support surface, A chain is fixed at the lower end of the bird hitting support surface; the second elastic member is fixed at the lower end of the fixed surface, and the other end of the second elastic member is fixed at the lower end of the compres...

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Abstract

The invention belongs to the technical field of bird impact load testing, and particularly relates to a bird impact load testing device and method. The device comprises a supporting base, a first elastic component, a bird impact supporting surface, a second elastic component, a compression amount measurement supporting surface, a first chain, a second chain, a gear mechanism and a scale, wherein the supporting base comprises a fixing surface; one end of the first elastic component is fixedly connected with the the upper end of the fixing surface; the other end of the first elastic component isfixedly connected with the upper end of the bird impact supporting surface; one end of the second elastic component is fixedly connected with the lower end of the fixing surface; the gear mechanism comprises two driving gears and a driven gear, the two driving gears are meshed with the first chain and the second chain respectively, and the driven gear is meshed with the two driving gears at the same time; and the scale is fixedly connected with the fixing surface of the supporting base, and a colored coating is arranged on the contact surface of the compression amount measuring supporting surface and the scale and used for calibrating the distance.

Description

technical field [0001] The invention belongs to the technical field of bird strike load testing, and in particular relates to a bird strike load testing device and method. Background technique [0002] The bird strike load test is mainly used in the bird strike test of aviation aircraft. For the bird strike load test of the structure, the main method is to paste the piezoelectric sensor on the structure to be hit. Piezoelectric sensors include PVDF pressure sensors, quartz pressure sensors, and piezoelectric ceramics. [0003] The polarization direction and force of PVDF film are as follows: figure 1 , the impact force test circuit setting of PVDF film in bird strike see figure 2 , where the first attenuation circuit is to ensure that the output voltage of the PVDF film does not exceed the operating voltage of the following circuit. The second attenuation circuit is to ensure that the output voltage does not exceed the range of the transient waveform recorder. The PVDF ...

Claims

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Application Information

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IPC IPC(8): G01M7/08G01L5/00G01L1/16
CPCG01L1/16G01L5/0052G01M7/08
Inventor 胡文刚于仁业王刚夏双满赵泽乾尹中伟王金亮
Owner HARBIN
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