Low Velocity Impact Behaviour of the Epoxy Matrix Composites Reinforced with Metallic and Oxide Particles

2012 ◽  
pp. 481-488 ◽  
Author(s):  
E. Bayraktar ◽  
D. Katundi ◽  
A. Guinault ◽  
A. Kosecki ◽  
A. Larbi
Keyword(s):  
Epoxy Matrix ◽  
Low Velocity Impact ◽  
Matrix Composites ◽  
Low Velocity ◽  
Velocity Impact ◽  
Impact Behaviour ◽  
Oxide Particles

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).

Low Velocity Impact on Fiber Reinforced Geocomposites

2016 ◽  
Vol 827 ◽  
pp. 145-148 ◽  
Author(s):  
Sneha Samal ◽  
David Reichmann ◽  
Iva Petrikova ◽  
Bohdana Marvalova
Keyword(s):  
Impact Damage ◽  
Acoustic Vibration ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact ◽  
Impact Behaviour ◽  
Reinforced Composite ◽  
Before And After ◽  
Two Parameters ◽  
The Impact

Low velocity impact strength of the fabric reinforced geocomposite has investigated in this article. Various fabrics such as carbon and E-glass were considered for reinforcement in geopolymer matrix. The primary two parameters such as low velocity, impact damage modes are explained on the E-glass and carbon based fabric geocomposite. The onset mode of damage to failure mode is examined through C-scan analysis. The quality of the composite is observed using c-scan with acoustic vibration mode of sensor before and after impact test. Then the effect of fabric and matrix on the impact behaviour is discussed. Residual strength of the composite is measured to determine post impact behaviour. It has been observed that resistance properties of E-glass reinforced composite is better than carbon fabric reinforced composite.

The role of interface strength on the low velocity impact behaviour of PP/glass fibre laminates

2014 ◽  
Vol 62 ◽  
pp. 88-96 ◽  
Author(s):  
G. Simeoli ◽  
D. Acierno ◽  
C. Meola ◽  
L. Sorrentino ◽  
S. Iannace ◽  
...  
Keyword(s):  
Glass Fibre ◽  
Interface Strength ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact ◽  
Impact Behaviour

scholarly journals Low velocity impact behaviour of ultra high strength concrete panels

Sadhana ◽  
2014 ◽  
Vol 39 (6) ◽  
pp. 1497-1507 ◽  
Author(s):  
SMITHA GOPINATH ◽  
R AYASHWARYA ◽  
V RAMESH KUMAR ◽  
PRABHAT RANJAN PREM ◽  
A RAMA CHANDRA MURTHY ◽  
...  
Keyword(s):  
High Strength Concrete ◽  
High Strength ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact ◽  
Impact Behaviour ◽  
Strength Concrete ◽  
Concrete Panels
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