Experimental Study of High-Velocity Impact Characteristic of Mg Alloy Using Ballistic Range

2006 ◽  
Vol 321-323 ◽  
pp. 654-657 ◽  
Author(s):  
Do Yeon Hwang ◽  
Akira Shimamoto ◽  
Daiju Numata ◽  
Takamase Kikuchi ◽  
Kazuyoshi Takayama
Keyword(s):  
Magnesium Alloy ◽  
High Velocity ◽  
High Speed ◽  
Surface Hardness ◽  
Treatment Temperature ◽  
High Velocity Impact ◽  
Velocity Impact ◽  
Ballistic Range ◽  
Magnesium Alloy Az31b ◽  
Dynamic Penetration

In this study, dynamic penetration phenomena of high-velocity impact of magnesium alloy were investigated. The surface hardness of magnesium alloy (AZ31B-O) and the heat-treated magnesium alloy (AZ31B-200°C, AZ31B-300°C, and AZ31B-430°C) were examined using Micro Vickers, and the influence of the heat treatment temperature was observed. We analyzed the metal organization using a microscope. We also used a ballistic range (two-stage light gas gun), and the test specimens were set at 0°obliquity at room temperature. A high-speed camera allowed us to capture and analyzed the dynamic penetration phenomena of the test specimen.

High-Velocity Impact Characteristic of Mg Alloy and CFRP Composite

2007 ◽  
Vol 334-335 ◽  
pp. 185-188
Author(s):  
Do Yeon Hwang ◽  
Akira Shimamoto ◽  
Kazuyoshi Takayama
Keyword(s):  
Magnesium Alloy ◽  
High Velocity ◽  
High Speed ◽  
Laminated Composite ◽  
Fiber Direction ◽  
High Velocity Impact ◽  
Velocity Impact ◽  
Plastic Composite ◽  
Magnesium Alloy Az31b ◽  
Dynamic Penetration

This study examined the dynamic penetration phenomena of high-velocity impact of magnesium alloy CFRP (Carbon Fiber Reinforced Plastic) composite. Test materials for investigation are magnesium alloy(AZ31B), the heat-treated magnesium alloy (AZ31B-200°C, AZ31B-300°C, AZ31B-430°C), and carbon/epoxy laminated composite materials with fiber direction [0°]8, [0°/45°]4s, [ 0°/90°]4s, [ 0°/45°/90°]3s and [ 0°/45°/-45°/90°]2s. We used a ballistic range (one-stage light gas gun), and the test specimens were set at 0°obliquity at room temperature. A high-speed camera allowed us to capture and analyzed the dynamic penetration phenomena of the test specimen.

scholarly journals High-Velocity Impact Characteristic of Magnesium Alloy under Cryogenic Temperature

2010 ◽  
Vol 76 (765) ◽  
pp. 573-580
Author(s):  
Ryo KUBOTA ◽  
Akira SHIMAMOTO ◽  
Meguru TEZUKA ◽  
Daiju NUMATA ◽  
Kazuyoshi TAKAYAMA
Keyword(s):  
Magnesium Alloy ◽  
High Velocity ◽  
Cryogenic Temperature ◽  
High Velocity Impact ◽  
Velocity Impact

Investigation on Micro-Structure Evolution of Mg-12Gd-3Y-0.5Zr Magnesium Alloy under High Velocity Impact

2014 ◽  
Vol 997 ◽  
pp. 325-331
Author(s):  
Xiao Ming Yang
Keyword(s):  
Magnesium Alloy ◽  
High Velocity ◽  
Shear Bands ◽  
Initial Strain Rate ◽  
Adiabatic Shear ◽  
Structure Evolution ◽  
High Velocity Impact ◽  
Adiabatic Shear Bands ◽  
Micro Structure ◽  
Velocity Impact

Cubic-shaped specimens and hat-shaped specimens were used to investigate ASBs formed in Mg-12Gd-3Y-0.5Zr magnesium alloy under different initial strain rate impact. It shows that no adiabatic shear bands (ASBs) is observed in micro-structure of cubic-shaped specimens by scanning electron microscope (SEM) , but obvious ASBs can be observed in hat-shaped specimens. Johnson-Cook model based on thermoviscoplasticity constitutive relation was used to simulate internal stress distribution and fracture mode, and it indicated that the result of failure analysis from specimens under high velocity impact tests was the same as that obtained by computer simulation.

High Velocity Impact Testing for Evaluation of Intermetallic Projectiles

2019 ◽  
Author(s):  
Colton B. Cagle ◽  
Kevin J. Hill ◽  
Connor Woodruff ◽  
Michelle L. Pantoya ◽  
Joseph Abraham ◽  
...  
Keyword(s):  
High Velocity ◽  
High Speed ◽  
Impact Testing ◽  
Testing System ◽  
High Velocity Impact ◽  
Flame Spreading ◽  
Lower Velocity ◽  
Velocity Impact ◽  
Target Interaction ◽  
Aluminum Plates

Abstract Experiments were performed to study penetration through multiple aluminum plates followed by impact into an inert steel anvil using a High-velocity Impact-ignition Testing System (HITS). The projectiles are intermetallic pellets launched from a propellant driven gun into a catch chamber equipped with view ports and imaging diagnostics. Penetration, impact and reaction are monitored using high-speed cameras that provide local and macroscopic perspectives of projectile and target interaction as well as overall reactivity. Results demonstrate the range of visual data that can be captured by a non-gas generating intermetallic projectile that fragments and reacts upon penetration and impact. Results show that higher velocity projectiles (~ 1300 and 800 m/s) produce smaller fragments upon target penetration that result in flame spreading through the chamber upon impact while lower velocity projectiles (~ 500 m/s) negligibly fragment upon target penetration and produce no flames even upon anvil impact.

Effect of strain rate, off-axis loading and high-velocity impact damage on the compressive strength of C/SiC composite

2018 ◽  
Vol 53 (4) ◽  
pp. 535-546 ◽  
Author(s):  
M Altaf ◽  
S Singh ◽  
VV Bhanu Prasad ◽  
Manish Patel
Keyword(s):  
Compressive Strength ◽  
Strain Rate ◽  
High Velocity ◽  
Impact Damage ◽  
The Other ◽  
High Velocity Impact ◽  
Fibre Bundles ◽  
Velocity Impact ◽  
Kink Bands ◽  
Other Hand

The compressive strength of C/SiC composite at different strain rates, off-axis orientations and after high-velocity impact was studied. The compressive strength was found to be 137 ± 23, 130 ± 46 and 162 ± 33 MPa at a strain rate of 3.3 × 10−5, 3.3 × 10−3, 3.3 × 10−3 s−1, respectively. On the other hand, the compressive strength was found to be 130 ± 46, 99 ± 23 and 87 ± 9 MPa for 0°/90°, 30°/60° and 45°/45° fibre orientations to loading direction, respectively. After high-velocity impact, the residual compressive strength of C/SiC composite was found to be 58 ± 26, 44 ± 18 and 36 ± 3.5 MPa after impact with 100, 150 and 190 m/s, respectively. The formation of kink bands in fibre bundles was found to be dominant micro-mechanism for compressive failure of C/SiC composite for 0°/90° orientation. On the other hand, delamination and the fibre bundles rotation were found to be the dominant mechanism for off-axis failure of composite.

Sign in / Sign up

Export Citation Format

Share Document