Work

Dynamic Tensile Extrusion of 0.25 and 0.30 Caliber Hypervelocity Projectiles

Year: 2024

Type: conference-paper

Abstract: Introduction An electrothermal (ET) laboratory gun capable of firing small cylindrical projectiles at hyper-velocities has been developed. [1-4] Such compact laboratory devices have significant potential for subscale material analysis. The ET gun allows high-throughput data acquisition in a controlled environment. A material response evaluation technique known as dynamic tensile extrusion (DTE) is one means to further increase the velocity of a moving projectile.[5] DTE is an experimental technique used to explore material response in tension under high strains and high strain rates as a spherical or hemispherical nose specimen passes through a conical reducing die. [6] Given a sufficient initial velocity, intense pressure is generated in the specimen as it impacts the die allowing the material to flow and results in a velocity enhancement at the front of the specimen.

Source: Hypervelocity Impact Symposium (HVIS)

DOI: 10.1115/hvis2024-050

Authors: W. Casey Uhlig, Matthew Coppinger, Brian Wilmer, Paul Berning

Institutions: DEVCOM Army Research Laboratory, United States Army Combat Capabilities Development Command

Language: English

Topic: High-Velocity Impact and Material Behavior

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funder: Army Research Laboratory

OpenAlex ID: W4411178379