Measurement of Falling Weight Impact Damage and Temperature Change of CFRP Laminates

2017 ◽  
Vol 2017 (0) ◽  
pp. OS1011
Author(s):  
Ryunosuke ABE ◽  
Masahiro HOSOI ◽  
Mamoru MIZUNO ◽  
Jian SHI
Keyword(s):  
Temperature Change ◽  
Impact Damage ◽  
Cfrp Laminates ◽  
Weight Impact ◽  
Falling Weight

Damage Development in CFRP Laminates under Impact Loading

2006 ◽  
Vol 326-328 ◽  
pp. 1833-1836 ◽  
Author(s):  
Seung Min Jang ◽  
Tadaharu Adachi ◽  
Akihiko Yamaji
Keyword(s):  
Impact Damage ◽  
Stacking Sequence ◽  
Absorbed Energy ◽  
Damage Development ◽  
Damage Resistance ◽  
Cfrp Laminates ◽  
Impact Tester ◽  
Weight Impact ◽  
The Impact ◽  
Delamination Area

The development characteristics of impact-induced damage in carbon-fiber-reinforcedplastics (CFRP) laminates were experimentally studied using a drop-weight impact tester. Five types of CFRP laminates were used to investigate the effect of stacking sequences and thicknesses. The efficiency of absorbed energy to impact energy was different for CFRP laminates with different stacking sequences or thicknesses. The DA/AE ratio of delamination area (DA) to absorbed energy (AE) was almost the same for CFRP laminates with the same stacking sequence regardless of the thickness. We found that the DA/AE ratio could be used as a parameter to characterize the impact damage resistance in CFRP laminates with different stacking sequences.

scholarly journals Falling Weight Impact Damage Characterisation of Flax and Flax Basalt Vinyl Ester Hybrid Composites

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 806 ◽  
Author(s):  
Hom Nath Dhakal ◽  
Elwan Le Méner ◽  
Marc Feldner ◽  
Chulin Jiang ◽  
Zhongyi Zhang
Keyword(s):  
Vinyl Ester ◽  
Failure Modes ◽  
Hybrid Composites ◽  
Impact Damage ◽  
Matrix Cracking ◽  
Damage Mechanisms ◽  
Pull Out ◽  
Weight Impact ◽  
Falling Weight ◽  
The Impact

Understanding the damage mechanisms of composite materials requires detailed mapping of the failure behaviour using reliable techniques. This research focuses on an evaluation of the low-velocity falling weight impact damage behaviour of flax-basalt/vinyl ester (VE) hybrid composites. Incident impact energies under three different energy levels (50, 60, and 70 Joules) were employed to cause complete perforation in order to characterise different impact damage parameters, such as energy absorption characteristics, and damage modes and mechanisms. In addition, the water absorption behaviour of flax and flax basalt hybrid composites and its effects on the impact damage performance were also investigated. All the samples subjected to different incident energies were characterised using non-destructive techniques, such as scanning electron microscopy (SEM) and X-ray computed micro-tomography (πCT), to assess the damage mechanisms of studied flax/VE and flax/basalt/VE hybrid composites. The experimental results showed that the basalt hybrid system had a high impact energy and peak load compared to the flax/VE composite without hybridisation, indicating that a hybrid approach is a promising strategy for enhancing the toughness properties of natural fibre composites. The πCT and SEM images revealed that the failure modes observed for flax and flax basalt hybrid composites were a combination of matrix cracking, delamination, fibre breakage, and fibre pull out.

Acoustic emission characterization of the temperature effect on falling weight impact damage in carbon/epoxy laminates

2014 ◽  
Vol 56 ◽  
pp. 591-598 ◽  
Author(s):  
R. Boominathan ◽  
V. Arumugam ◽  
C. Santulli ◽  
A. Adhithya Plato Sidharth ◽  
R. Anand Sankar ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Temperature Effect ◽  
Impact Damage ◽  
Weight Impact ◽  
Falling Weight

Inspection of Drop-weight Impact Damage in Woven CFRP Laminates Fabricated by Different Processes

2009 ◽  
Vol 43 (19) ◽  
pp. 1939-1946 ◽  
Author(s):  
J. Zhang ◽  
B.L. Fox ◽  
D. Gao ◽  
A.W. Stevenson
Keyword(s):  
Impact Damage ◽  
Cfrp Laminates ◽  
Drop Weight ◽  
Weight Impact

scholarly journals Influence of Water Absorption on the Low Velocity Falling Weight Impact Damage Behaviour of Flax/Glass Reinforced Vinyl Ester Hybrid Composites

Molecules ◽  
2020 ◽  
Vol 25 (2) ◽  
pp. 278 ◽  
Author(s):  
Angeline Paturel ◽  
Hom Nath Dhakal
Keyword(s):  
Glass Fibre ◽  
Vinyl Ester ◽  
Room Temperature ◽  
Moisture Absorption ◽  
Impact Damage ◽  
Flax Fibre ◽  
Low Velocity ◽  
Glass Fibre Reinforced ◽  
Weight Impact ◽  
Falling Weight

Due to rigorous new environmental legislations, automotive, marine, aerospace, and construction sectors have redirected their focus into using more recyclable, sustainable, and environmentally friendly lightweight materials driven by strengthening resource efficiency drive. In this study, the influence of moisture absorption on flax and flax/glass hybrid laminates is presented with the aim to investigating their low velocity impact behaviour. Three different types of composite laminates namely, flax fibre reinforced vinyl ester, flax fibre hybridised glass fibre and glass fibre reinforced vinyl ester composites were fabricated using resin infusion technique. The moisture immersion tests were undertaken by immersing the different specimens in sea water bath at room temperature and 70 °C at different time durations. The low velocity falling weight impact testing was performed at 25 Joules of incident energy level and impact damage behaviour was evaluated at both ageing conditions using scanning electron microscopy (SEM) and X-ray microcomputed tomography (micro CT). The percentage of moisture uptake was decreased for flax vinyl ester specimens with glass fibre hybridisation. The maximum percentage of weight gain for flax fibre, flax/glass hybrid and glass fibre reinforced composites immersed at room temperature for 696 h is recorded at 3.97%, 1.93%, and 0.431%, respectively. The hybrid composite exhibited higher load and energy when compared flax/vinyl ester composite without hybridisation, indicating the hybrid system as a valid strategy towards achieving improved structural performance of natural fibre composites. The moisture absorption behaviour of these composites at room was observed to follow Fickian behaviour.

scholarly journals Impact. Effect of Lay-Up Sequence on Relation between Damage and Absorbed Energy in CFRP Laminates Subjected to Falling Weight Impact.

1996 ◽  
Vol 45 (7) ◽  
pp. 792-798
Author(s):  
Isao NAGAI ◽  
Toshimitsu TANAKA ◽  
Mami MATSUKAWA ◽  
Kazuo KOMAKI ◽  
Masaki HOJO
Keyword(s):  
Absorbed Energy ◽  
Cfrp Laminates ◽  
Impact Effect ◽  
Weight Impact ◽  
Falling Weight
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