scholarly journals Mechanism Elucidation of High-Pressure Generation in Cellular Metal at High-Velocity Impact

Metals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 128
Author(s):  
Masatoshi Nishi ◽  
Shigeru Tanaka ◽  
Akihisa Mori ◽  
Matej Vesenjak ◽  
Zoran Ren ◽  
...  
Keyword(s):  
High Pressure ◽  
Impact Loading ◽  
High Velocity ◽  
High Pressures ◽  
Direct Impact ◽  
High Velocity Impact ◽  
Velocity Impact ◽  
Base Materials ◽  
Cellular Metal ◽  
Cellular Metals

Cellular metals exhibit diverse properties, depending on their geometries and base materials. This study investigated the mechanism of high-pressure generation during the high-velocity impact of unidirectional cellular (UniPore) materials. Cubic UniPore copper samples were mounted on a projectile and subjected to impact loading using a powder gun to induce direct impact of samples. The specimens exhibited a unique phenomenon of high-pressure generation near the pores during compression. We elucidate the mechanism of the high-pressure phenomenon and discuss the pore geometries that contribute to the generation of high pressures.

Processes of Failure of Polymethyl Methacrylate under High-Velocity Impact Loading and Pulse Laser Treatment

2016 ◽  
Vol 43 (3) ◽  
pp. 35-38
Author(s):  
A.S. Akhriev ◽  
Z.S. Torshkhoeva ◽  
Z.Kh. Gaitukieva ◽  
B.I. Kunizhev ◽  
A.M. Kugotova ◽  
...  
Keyword(s):  
Laser Treatment ◽  
Polymethyl Methacrylate ◽  
Pulse Laser ◽  
Impact Loading ◽  
High Velocity ◽  
High Velocity Impact ◽  
Velocity Impact

scholarly journals The Impact Performance of Woven-Fabric Thermoplastic and Thermoset Composites Subjected to High-Velocity Soft- and Hard-Impact Loading

2019 ◽  
Vol 26 (5-6) ◽  
pp. 1389-1410 ◽  
Author(s):  
Jun Liu ◽  
Haibao Liu ◽  
Cihan Kaboglu ◽  
Xiangshao Kong ◽  
Yuzhe Ding ◽  
...  
Keyword(s):  
Carbon Fibre ◽  
Impact Loading ◽  
High Velocity ◽  
Image Correlation ◽  
Woven Fabric ◽  
High Velocity Impact ◽  
Velocity Impact ◽  
Impact Performance ◽  
The Impact ◽  
Carbon Fibre Composites

Abstract The present paper investigates the impact performance of woven-fabric carbon-fibre composites based upon both thermoplastic- and thermoset-matrix polymers under high-velocity impact loading by conducting gas-gun experiments at impact velocities of up to 100 m.s−1. The carbon-fibre reinforced-polymers (CFRPs) are impacted using soft- (i.e. gelatine) and hard- (i.e. aluminium-alloy) projectiles to simulate either a soft bird-strike or a hard foreign-body impact (e.g. runway debris), respectively, on typical composites employed in civil aircraft. The out-of-plane displacements of the impacted composite specimen are obtained by means of a three-dimensional Digital Image Correlation (DIC) system for the soft-projectile impact on the composites and the extent of damage is assessed both visually and by using portable C-scan equipment. The perforation resistance and energy absorbing capability of the composites are also studied by performing high-velocity impact experiments using the hard-projectile and the resulting extent and type of damage are identified. In addition, a Finite Element (FE) model is also developed to investigate the interaction between the projectile and the composite target.

scholarly journals High-velocity impact loading in honeycomb sandwich panels reinforced with polymer foam: a numerical approach study

2020 ◽  
Vol 29 (8) ◽  
pp. 707-721
Author(s):  
Fatemeh Hassanpour Roudbeneh ◽  
Gholamhossein Liaghat ◽  
Hadi Sabouri ◽  
Homayoun Hadavinia
Keyword(s):  
Impact Loading ◽  
High Velocity ◽  
Sandwich Panels ◽  
Numerical Approach ◽  
High Velocity Impact ◽  
Polymer Foam ◽  
Velocity Impact ◽  
Honeycomb Sandwich

GFRP materials under high-velocity impact loading

2000 ◽  
Vol 10 (PR9) ◽  
pp. Pr9-577-Pr9-582
Author(s):  
H.-J. Ernst ◽  
T. Wolf ◽  
K. Hoog ◽  
W. F. Unckenbold
Keyword(s):  
Impact Loading ◽  
High Velocity ◽  
High Velocity Impact ◽  
Velocity Impact

High-velocity impact loading of thick GFRP blocks

2003 ◽  
Vol 110 ◽  
pp. 633-638 ◽  
Author(s):  
H.-J. Ernst ◽  
Th. Merkel ◽  
Th. Wolf ◽  
K. Hoog
Keyword(s):  
Impact Loading ◽  
High Velocity ◽  
High Velocity Impact ◽  
Velocity Impact
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