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

CN112504598APending Publication Date: 2021-03-16HARBIN
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2021-03-16

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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.
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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 ...

Examples

Embodiment Construction

[0023] In order to avoid large errors in the experimental test results in the bird strike test due to temperature factors. This paper presents a simple mechanical device structure.

[0024] A bird strike load testing device according to an embodiment of the present invention, comprising: a support seat, a first elastic component, a bird strike support surface, a second elastic component, a compression measurement support surface, a first chain, a second chain, and a gear mechanism . Ruler, wherein, the support base includes a fixed surface, the fixed surface is a plane in the vertical direction; one end of the first elastic component is fixedly connected to the upper end of the fixed surface; the other end of the first elastic component is fixedly connected to the upper end of the bird impact support surface, the second A chain is fixed at the lower end of the bird impact support surface; one end of the second elastic component is fixedly connected with the lower end of the fi...