Low velocity impact tests of laminate glass-fiber-epoxy matrix composite material plates

2002 ◽  
Vol 27 (2) ◽  
pp. 213-229 ◽  
Author(s):  
Giovanni Belingardi ◽  
Roberto Vadori
2019 ◽  
Vol 84 ◽  
pp. 995-1010 ◽  
Author(s):  
Lijun Li ◽  
Lingyu Sun ◽  
Taikun Wang ◽  
Ning Kang ◽  
Wan Cao

2016 ◽  
Vol 838 ◽  
pp. 29-35
Author(s):  
Michał Landowski ◽  
Krystyna Imielińska

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).


Author(s):  
Sallal R Abid ◽  
Thaar S Al-Gasham ◽  
Sajjad H Ali ◽  
Ahmed L Kadhum

2020 ◽  
Vol 41 (6) ◽  
pp. 2181-2197 ◽  
Author(s):  
Carlos Rubio‐González ◽  
Eduardo José‐Trujillo ◽  
Julio A. Rodríguez‐González ◽  
Alexandre Mornas ◽  
Abderrahim Talha

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