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Pneumatic material impact test device simulating shooting of bullet (cannonball)

An impact test, pneumatic technology, applied in the direction of using one impact force to test the strength of materials, can solve problems such as difficult to carry out, and achieve the effect of accurate test, accurate impact energy test and large range

Inactive Publication Date: 2014-10-08
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

More importantly, for the impact test of large material samples or special-shaped parts, it is difficult to perform pendulum impact testing machine or falling ball impact testing machine due to the limitation of equipment size and impact principle.

Method used

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  • Pneumatic material impact test device simulating shooting of bullet (cannonball)
  • Pneumatic material impact test device simulating shooting of bullet (cannonball)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The pneumatic material impact test device imitating the shooting of bullets (guns) is mainly composed of air compressor (1), computer (3), solenoid valve (4) equipped with jog switch, magnet (5), photoelectric speedometer (7) , launch tube (8), shock bullet (9), support (10) etc. to form. The air compressor (1) is connected with the solenoid valve (4) and the launch tube (8) through the plastic hose (2) to form the compressed air circuit of the impact test device. Drill two small holes with a diameter of about 2mm symmetrically in the center where the photoelectric velocimeter (7) is installed in the launch tube (8) to ensure that the light of the photoelectric velocimeter (7) can pass through the launch tube (8). In order to ensure accurate measurement of the velocity and energy of the impact bomb (9), the minimum distance from the center of the small hole to the mouth of the launch tube (8) is half the thickness of the photoelectric speedometer (7), and the maximum di...

Embodiment 2

[0023] figure 2 For the impact test of materials, the impact bomb energy calculation and statistical table displayed by the computer. After the impact bullet passes through the photoelectric speedometer, the computer can measure the light blocking time of the impact bullet in real time and calculate the speed of the impact bullet according to the length of the impact bullet. At the same time, the impact energy of the impact bomb is automatically calculated according to the mass of the impact bomb and displayed on the computer.

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Abstract

The invention discloses a pneumatic material impact test device simulating the shooting of a bullet (cannonball). The pneumatic material impact test device is characterized in that compressed air of an air compressor is used as power, a cylindrical impact ball with a semispherical or pyramidal front end is shot to a test material through a launching tube, and the speed and energy of the impact ball are determined by utilizing a photoelectric speedometer. The launching tube provided by the invention can be fixed on a support, and is also can be held by hands or carried on a shoulder to perform material impact test. By adopting the pneumatic material impact test device, the impact position and energy of the impact ball can be accurately controlled, and the secondary impact of the impact ball on the test material can be prevented from injuring the operation personnel or other articles. The pneumatic material impact test device has the advantages that the shape of the impact ball is diversified, the test on the impact energy is accurate, the measuring range is large, the impact test can be carried out in the vertical, longitudinal and horizontal directions, and the size and shape of the test material or components are not limited.

Description

technical field [0001] The invention relates to a pneumatic material impact test device for simulating the shooting of bullets (guns), especially a cylindrical impact test device with a hemispherical or cone-shaped front end, which is driven by the compressed air in the air compressor. A material impact test device that shoots the projectile at the test material and uses a photoelectric velocimeter to measure the velocity and energy of the impact projectile. technical background [0002] The impact strength of a material is the ability of a material to resist external impact. In the process of preparation or use, materials or parts will inevitably be subjected to various impact external forces, which will cause certain damage to materials or parts. For example, the body of a car or aircraft made of metal (such as aluminum or steel) will be dented or perforated when hit by a hard object, which will affect the appearance and strength of the car or aircraft. Composite materi...

Claims

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Application Information

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IPC IPC(8): G01N3/30
Inventor 谢小林李志鹏江洪流
Owner NANCHANG HANGKONG UNIVERSITY
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