การศึกษาพฤติกรรมคลื่นกระแทกด้วยเทคนิคชาร์โดว์กราฟ

Wuttichai Sittiwong

doi:10.60136/bas.v14.2025.2915

Authors

Wuttichai Sittiwong Division of Mechanical Engineering, Faculty of Agriculture and Technology, Rajamangala University of Technology Isan SURIN Campus

DOI:

https://doi.org/10.60136/bas.v14.2025.2915

Keywords:

Shadowgraph technique, High speed video camera, Smokeless powder, Gun muzzle

Abstract

The purpose of the research is to study the differences shock waves behavior, the cylindrical projectile of following five head shapes are assigned: 1) flat shape head, 2) round nose head, 3) flat nose head, 4) 30º boat tail head, and 5) 45º boat tail head shape. The projectile driven with 3 grams of smokeless powder. The behavior of the shock waves recorded using the shadowgraph technique in conjunction with a high-speed video camera. According to the results of the experiment, the shadowgraph technique combined with a high-speed video camera can clearly record the behavior of the shock waves from the projectiles. In addition, the projectile velocity is divided into two groups according to the shape of the bullet: flat shape, round nose headed, and flat nose head projectile. It has a similar average speed of about 780 meters per second. The group including projectiles with 30º, and 45º boat tail shapes had a velocity of around 550 m/s. It has an average speed of about 550 meters per second.

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