10 Result(s)
within
Youngsik Choi
Engineering
English
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Article
Investigation on High Velocity Impact of Projectile on Double Layered Geomaterial
This study investigated the high velocity impact phenomena of a projectile on double layered geomaterial consisting of soil and rock. Experiments were conducted to analyze the penetration depth of the projecti...
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Article
A study on the plasticity and fracture of the AISI 4340 steel alloy under different loading conditions and considering heat-treatment effects
Comprehensive numerical and experimental studies were performed to investigate the plasticity and ductile fracture behaviors of the AISI 4340 steel alloy under multiaxial stress loading conditions and at diffe...
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Article
Influence of Projectile Velocity on Penetration into a Steel Plate
The effect of various impact conditions on the behavior of projectiles should be explored to determine the structural damage resulting from a high-velocity impact. Although the projectile velocity and incident...
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Article
Effects of Cutting Speed on Surface Integrity and Fatigue Performance of Hard Machined Surfaces
The study investigates the effects of cutting speed on the surface integrity and fatigue performance of hard machined surfaces. The results demonstrated that a higher cutting speed induces more compressive res...
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Article
Effects of a Near-Field Explosion in a Tunnel Behind a Blast Proof Door
In this study, the propagation of a pressure wave inside a tunnel due to explosion near the blast proof door is investigated. In addition, the peak pressures and its arrival time are measured experimentally. T...
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Article
Effect of projectile incident angle on penetration of steel plates
High speed impacts are complex phenomena influenced by various parameters. To predict the structural damage caused by a high speed impact, it is necessary to investigate the effect of various impact conditions...
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Article
A Study on the behavior of blast proof door under blast load
The behavior of a blast proof door under a blast load was investigated experimentally and analytically. An experiment was carried out to study the behavior of the blast proof door induced by explosive detonati...
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Article
A study on the effects of surface dimple geometry on fretting fatigue performance
Recently, surface texturing has become a major method for improving the performance of contact bodies. Under tribological conditions, this method increases fatigue strength significantly. Advances in precision...
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Article
Influence of explosive weight and steel thickness on behavior of steel plates
The effective design of protective structures demands an understanding of complex physics processes involving various parameters. Thus, a considerable amount of test data is required. Because direct tests are ...
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Article
Impact evaluation of rolling contact fatigue life models
Since the accurate prediction of fatigue life has a significant value, many researchers have attempted to develop a reliable fatigue life model. Recently, rolling contact fatigue life models incorporating mach...
