Design optimization of bioinspired helicoidal CFRPP/GFRPP hybrid composites for multiple low-velocity impact loads

2022 ◽  
pp. 107064
Author(s):  
Zhen Wang ◽  
Quantian Luo ◽  
Qing Li ◽  
Guangyong Sun
Keyword(s):  
Design Optimization ◽  
Hybrid Composites ◽  
Low Velocity Impact ◽  
Impact Loads ◽  
Low Velocity ◽  
Velocity Impact

scholarly journals Mechanical Characterization and Impact Damage Assessment of Hybrid Three-Dimensional Five-Directional Composites

Polymers ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1395 ◽  
Author(s):  
Liwei Wu ◽  
Wei Wang ◽  
Qian Jiang ◽  
Chunjie Xiang ◽  
Ching-Wen Lou
Keyword(s):  
Carbon Fiber ◽  
Impact Load ◽  
Hybrid Composites ◽  
Impact Damage ◽  
Three Dimensional ◽  
Low Velocity Impact ◽  
Aramid Fibers ◽  
Braided Composites ◽  
Low Velocity ◽  
Velocity Impact

The effects of braided architecture and co-braided hybrid structure on low-velocity response of carbon-aramid hybrid three-dimensional five-directional (3D5d) braided composites were experimentally investigated in this study. Low-velocity impact was conducted on two types of hybridization and one pure carbon fiber braided reinforced composites under three velocities. Damage morphologies after low-velocity impact were detected by microscopy and ultrasonic nondestructive testing. Interior damages of composites were highly dependent on yarn type and alignment. Impact damage tolerance was introduced to evaluate the ductility of hybrid composites. Maximum impact load and toughness changed with impact velocity and constituent materials of the composites. The composite with aramid fiber as axial yarn and carbon fiber as braiding yarn showed the best impact resistance due to the synergistic effect of both materials. Wavelet transform was applied in frequency and time domain analyses to reflect the failure mode and mechanism of hybrid 3D5d braided composites. Aramid fibers were used either as axial yarns or braiding yarns, aiding in the effective decrease in the level of initial damage. In particular, when used as axial yarns, aramid fibers effectively mitigate the level of damage during damage evolution.

scholarly journals Low Velocity Impact and Compression after Impact Properties on Gamma Irradiated Kevlar/Oil Palm Empty Fruit Bunch Hybrid Composites

Coatings ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 646
Author(s):  
Siti Madiha Muhammad Amir ◽  
Mohamed Thariq Hameed Sultan ◽  
Ain Umaira Md Shah ◽  
Mohammad Jawaid ◽  
Syafiqah Nur Azrie Safri ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Oil Palm ◽  
Composite Structures ◽  
Gamma Ray ◽  
Hybrid Composites ◽  
Low Velocity Impact ◽  
Empty Fruit Bunch ◽  
Low Velocity ◽  
Velocity Impact ◽  
Compression After Impact

This work investigates the dynamic impact response of Kevlar/oil palm empty fruit bunch (EFB) hybrid composite structures with/without gamma radiation under low velocity impact (LVI) and compression after impact (CAI) test. The layering pattern Kevlar/oil palm EFB/Kevlar (K/OP/K) was applied in this work. Irradiation with gamma ray with various doses were applied from 25–150 kGy. LVI results shows that hybrid Kevlar/oil palm EFBs (Kevlar/OPEFB) that were not irradiated have greater impact resistance as compared to irradiated hybrid Kevlar/OPEFB. It was also observed that the hybridization of Kevlar/OPEFB with gamma irradiation helped to improve the compressive residual strength of the composites. It was found that Kevlar/OPEFB hybrid composites with the layering sequence K/OP/K can withstand up to 35 J of impact energy, with the optimum gamma radiation dose at 50 kGy.

Influence of open holes on composites delamination induced by low velocity impact loads

2013 ◽  
Vol 97 ◽  
pp. 239-244 ◽  
Author(s):  
A.M. Amaro ◽  
P.N.B. Reis ◽  
M.F.S.F. de Moura ◽  
M.A. Neto
Keyword(s):  
Low Velocity Impact ◽  
Impact Loads ◽  
Low Velocity ◽  
Velocity Impact
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