Ply level failure prediction of carbon fibre reinforced laminated composite panels subjected to low velocity drop-weight impact using adaptive meshing techniques

2014 ◽  
Vol 102 ◽  
pp. 169-177 ◽  
Author(s):  
Umar Farooq ◽  
Peter Myler
Keyword(s):  
Carbon Fibre ◽  
Failure Prediction ◽  
Laminated Composite ◽  
Composite Panels ◽  
Adaptive Meshing ◽  
Low Velocity ◽  
Drop Weight ◽  
Weight Impact

scholarly journals Flat nose low velocity drop-weight impact response of carbon fibre composites using non-destructive damage detection techniques

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Umar Farooq ◽  
Peter Myler
Keyword(s):  
Carbon Fibre ◽  
Damage Detection ◽  
Low Velocity ◽  
Detection Techniques ◽  
Drop Weight ◽  
Weight Impact ◽  
The Impact ◽  
Carbon Fibre Composites ◽  
Non Destructive ◽  
Thick Laminates

AbstractThis work is mainly concerned with the nondestructive post-impact damage evaluation of carbon fibre reinforced laminated composite panels subject to low velocity drop-weight impact by flat and round nose impactors. Quasi-isotropic laminates consisting of eight-, sixteen-, and twenty-four plies were impacted by flat and round nose impactors at different velocity levels. Load-time history data were recorded and plotted to correlate loaddrop as damage level to the impactor nose profiles. Test produced data, non-destructive damage detection techniques: visual, ultrasonic, and eddy- current, and computer simulations were utilised to identify and quantify status of the impact induced damage. To evaluate damage in relatively thick laminates (consisting of 24-Ply), the damage ratios and deflection quantities were correlated to the corresponding impactor nose profiles. Damage induced by the flat nose impactor to thick laminates was compared against the data produced by the round nose impactor. Results show that relatively thin laminates were largely affected by the impactor nose. Reasonable difference was observed in damage caused by flat and round impactor nose profiles to thick laminates impacted at relatively higher velocity impacts. Resultswere compared and validated against simulation produced data.

scholarly journals Low velocity drop weight impact behavior of Al2O3-Ni-ZrO2 and Al2O3-Ni-Cr2O3 nanocomposite systems

2021 ◽  
Author(s):  
Betül Kafkaslıoğlu Yıldız ◽  
Murat Büyük ◽  
Yahya Kemal Tür
Keyword(s):  
Network Formation ◽  
Low Energy ◽  
Impact Behavior ◽  
Precipitation Method ◽  
Low Velocity ◽  
Ballistic Performance ◽  
Crack Network ◽  
Damage Mechanisms ◽  
Drop Weight ◽  
Weight Impact

Abstract 1 vol% Ni particulate Al2O3 matrix nanocomposites prepared by the heterogeneous precipitation method with ZrO2 (5 vol%) or Cr2O3 (1 vol%) additives were subjected to the low energy drop weight impact tests to compare the behavior of the compositions under low energy impact and to investigate the damage mechanisms. The pure Al2O3, Al2O3/Ni, Al2O3/ZrO2, and Al2O3/Cr2O3 compositions with the same additive ratios were also produced to make the comparison systematically. Also, the Vickers hardness measurements were carried out and a significant increase in hardness was attained for both Al2O3/Ni + ZrO2 and Al2O3/Ni + Cr2O3. The average hardness value around 24.8 ± 1.0 GPa was measured for Al2O3/Ni + ZrO2 and Al2O3/Ni + Cr2O3 which means ∼ 15% improvement compared to the pure Al2O3. Between all the compositions, the maximum force (Fmax) value was obtained for Al2O3/Ni + ZrO2 for 12 J impact energy level (26617 N) according to the low energy drop weight impact test results. Tensile radial crack network formation, cone formation, fracture and crushing of the cone structure were observed as damage mechanisms for all the compositions. The volume of conical frustum structure was evaluated for each composition and the effect of microstructure on possible ballistic performance was also discussed.

Experimental behavior of concrete filled double steel tubular (CFDST) members under low velocity drop weight impact

2015 ◽  
Vol 97 ◽  
pp. 279-295 ◽  
Author(s):  
Rui Wang ◽  
Lin-Hai Han ◽  
Xiao-Ling Zhao ◽  
Kim J.R. Rasmussen
Keyword(s):  
Low Velocity ◽  
Experimental Behavior ◽  
Drop Weight ◽  
Weight Impact

scholarly journals Mechanical properties of recycled carbon fibre/polyester thermoplastic tape composites

2016 ◽  
Vol 51 (18) ◽  
pp. 2655-2663 ◽  
Author(s):  
MH Akonda ◽  
M Stefanova ◽  
P Potluri ◽  
DU Shah
Keyword(s):  
Mechanical Properties ◽  
Carbon Fibre ◽  
End Of Life ◽  
Laminated Composite ◽  
Composite Panels ◽  
Carbon Fibres ◽  
Waste Generation ◽  
Thermal Consolidation ◽  
Better Than

The increasing use of high-value carbon fibre in composites is linked with increasing waste generation: from dry fibre and prepreg offcuts during manufacturing to end-of-life parts. In this work, a novel thermoplastic tape was produced from 60 wt.% manufacturing waste carbon fibres (60 mm long) and 40 wt.% polyester fibres using a thermal consolidation technique. The thin (0.2 mm) and narrow (20 mm wide) tapes were then used to fabricate laminated composite panels in two 0/90 tape architectures: cross-ply and woven ply. Various mechanical properties, including tensile, flexural, compression and impact were evaluated. It was found that cross-ply performed better than woven ply laminates, with failure in the latter materials typically initiating at the tape interlacement points.

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