Experimental and numerical evaluation of transparent bulletproof material for enhanced impact-energy absorption using strengthened-glass/polymer composite

2016 ◽  
Vol 97 ◽  
pp. 150-161 ◽  
Author(s):  
Gyu-In Shim ◽  
Seong-Hwan Kim ◽  
Deok-Lae Ahn ◽  
Jong-Kyoo Park ◽  
Doo-Han Jin ◽  
...  
Keyword(s):  
Energy Absorption ◽  
Polymer Composite ◽  
Impact Energy ◽  
Numerical Evaluation ◽  
Strengthened Glass

scholarly journals Impact energy absorption of three mouthguard materials in three environments

2010 ◽  
Vol 26 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Darin R. Lunt ◽  
Deborah A. Mendel ◽  
William A. Brantley ◽  
F. Michael Beck ◽  
Sarandeep Huja ◽  
...  
Keyword(s):  
Energy Absorption ◽  
Impact Energy

Effect of SiO2 Nanoparticles on the Mechanical and Low Velocity Impact Properties of Epoxy/Glass Composites

2016 ◽  
Vol 838 ◽  
pp. 29-35
Author(s):  
Michał Landowski ◽  
Krystyna Imielińska
Keyword(s):  
Flexural Strength ◽  
Energy Absorption ◽  
Impact Energy ◽  
Epoxy Matrix ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Nanoparticle Suspension ◽  
Impact Properties ◽  
Velocity Impact ◽  
The Impact

Flexural strength and low velocity impact properties were investigated in terms of possibile improvements due to epoxy matrix modification by SiO2 nanoparticles (1%, 2%, 3%, 5%, 7%wt.) in glass/epoxy laminates formed using hand lay-up method. The matrix resin was Hexion L285 (DGEBA) with Nanopox A410 - SiO2 (20 nm) nanoparticle suspension in the base epoxy resin (DGEBA) supplied by Evonic. Modification of epoxy matrix by variable concentrations of nanoSiO2 does not offer significant improvements in the flexural strength σg, Young’s modulus E and interlaminar shear strength for 1% 3% and 5% nanoSiO2 and for 7% a slight drop (up to ca. 15-20%) was found. Low energy (1J) impact resistance of nanocomposites represented by peak load in dynamic impact characteristics was not changed for nanocompoosites compared to the unmodified material. However at higher impact energy (3J) nanoparticles appear to slightly improve the impact energy absorption for 3% and 5%. The absence or minor improvements in the mechanical behaviour of nanocomposites is due to the failure mechanisms associated with hand layup fabrication technique: (i.e. rapid crack propagation across the extensive resin pockets and numerous pores and voids) which dominate the nanoparticle-dependent crack energy absorption mechanisms (microvoids formation and deformation).

scholarly journals The Young`s Modulus and Impact Energy Absorption of Wet and Dry Deer Cortical Bone

2009 ◽  
Vol 1 (1) ◽  
pp. 38-45 ◽  
Author(s):  
John D. Currey ◽  
Tomas Landete-Castillejos ◽  
Jose A. Estevez ◽  
Augusto Olguin ◽  
Andres J. Garcia ◽  
...  
Keyword(s):  
Cortical Bone ◽  
Energy Absorption ◽  
Impact Energy

Numerical evaluation of ductility and energy absorption of steel rings constructed from plates

2018 ◽  
Vol 169 ◽  
pp. 94-106 ◽  
Author(s):  
Zahra Andalib ◽  
Mohammad Ali Kafi ◽  
Ali Kheyroddin ◽  
Mohammad Bazzaz ◽  
Seyedbabak Momenzadeh
Keyword(s):  
Energy Absorption ◽  
Numerical Evaluation

Interplay of fabric structure and shear thickening fluid impregnation in moderating the impact response of high-performance woven fabrics

2020 ◽  
Vol 54 (28) ◽  
pp. 4387-4395
Author(s):  
Sanchi Arora ◽  
Abhijit Majumdar ◽  
Bhupendra Singh Butola
Keyword(s):  
Beneficial Effect ◽  
Energy Absorption ◽  
Impact Energy ◽  
High Performance ◽  
Research Work ◽  
Impact Resistance ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Fabric Structure ◽  
The Impact

The beneficial effect of STF impregnation in enhancing the impact resistance of high-performance fabrics has been extensively reported in the literature. However, this research work reports that fabric structure has a decisive role in moderating the effectiveness of STF impregnation in terms of impact energy absorption. Plain woven fabrics having sett varying from 25 × 25 inch−1 to 55 × 55 inch−1 were impregnated with STF at two different padding pressures to obtain different add-ons. The impact energy absorption by STF impregnated loosely woven fabrics was found to be higher than that of their neat counterparts for both levels of add-on, while opposite trend was observed in case of tightly woven fabrics. Further, comparison of tightly woven plain, 2/2 twill, 3/1 twill and 2 × 2 matt fabrics revealed beneficial effect of STF impregnation, except for the plain woven fabric, establishing that there exists a fabric structure-STF impregnation interplay that tunes the impact resistance of woven fabrics.

scholarly journals Analysis of impact energy absorption by lightweight aramid structures

2018 ◽  
Vol 203 ◽  
pp. 917-926 ◽  
Author(s):  
M.M. Moure ◽  
I. Rubio ◽  
J. Aranda-Ruiz ◽  
J.A. Loya ◽  
M. Rodríguez-Millán
Keyword(s):  
Energy Absorption ◽  
Impact Energy
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