Effects of triggering mechanisms on the crashworthiness characteristics of square woven jute/epoxy composite tubes

Sivagurunathan, Rubentheran; Way, Saijod Lau Tze; Sivagurunathan, Linkesvaran; Yaakob, Mohd Yuhazri

doi:10.1177/0731684418763218

Cited by 18 publications

(13 citation statements)

References 69 publications

(106 reference statements)

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“…At the compaction zone, the load increased drastically indicating material densification. 87 In axial crushing, load increased at higher displacement, that is, at the beginning of compaction zone. The specimen enters the compaction zone when it is fully damaged and cannot resist more load.…”

Section: Smentioning

confidence: 99%

Novel energy absorbent composites for crashworthiness applications

El‐baky

Hegazy

Hassan

2022

Journal of Industrial Textiles

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Glass reinforced epoxy composite tubes filled with 1, 2, 3, and 4 wt. % of HNC, MC, Al2O3, SiO2, and SiC nanofillers were fabricated using wet-wrapping process by hand lay-up and tested under quasi-static axial loadings. Crashworthiness parameters and failure modes were recorded. Results indicated that EAC and the specimens’ failure modes are dominated by the type and wt. % of the embedded nanofillers. As compared to pristine glass/epoxy tubes, an enhancement of 230.42, 243.30, 286.43, and 336.12% in the absorbed energy ( U) was attained by the addition of 1, 2, 3, and 4 wt. % of HNC, respectively. An improvement of 21.93, 87.35, 225.99, and 318.07% in U was achieved by the inclusion of 1, 2, 3, and 4 wt. % of MC, respectively. An enhancement of 17.66, 51.63, and 71.94% in U was reported by the integration of 1, 2, and 3% of nano-Al2O3. Whilst a reduction of 31.16% was noticed for 4 wt. % of nano-Al2O3. The incorporation of nano-SiO2 and nano-SiC exhibits a reduction in U of the fabricated tubes. Composites filled with 4 wt. % of HNC has the highest load carrying capacity and EAC of 32.75 kN and 1110.84 J, respectively. So, they seem to be the best appropriate choice for energy absorbing elements. Glass/epoxy composite tubes filled with HNC, MC, and Al2O3 show outstanding energy absorption characteristics. However, specimens filled with SiO2 and SiC nanofillers are ineffective in the crashworthiness applications.

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Section: Smentioning

confidence: 99%

Novel energy absorbent composites for crashworthiness applications

El‐baky

Hegazy

Hassan

2022

Journal of Industrial Textiles

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“…Overall, this is due to the difference in material and weight of each specimen used in studies. The evaluating through total energy absorption to determine the structure's capability to dissipate energy in a stable manner may be misleading [40]. In order to make a more realistic comparison among the geometric specimens, it is based on SE.…”

Section: Specific Energy Absorption (Se)mentioning

confidence: 99%

Effect of Geometric Shape on the Crushing Performance of Natural Jute Mat/Epoxy Specimens Under Axial Quasi-Static Compression

Hamza¹,

Tjprc²

2020

IJMPERD

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The interest in the using of natural composite has been increased significantly in recent years in many engineering fields due to their distinctive characteristics; these as low weights, high-energy dissipation ability, and it's considered ecofriendly. In this paper, an experimental investigation is done on the effect of structure geometry on the crashworthiness characteristics of woven jute mat/epoxy composite specimens. The main objective is to understand the influence of the geometrical shape, and layers numbers on the energy absorption of composite specimens under uniaxial quasi-static loading. The twelve hollow specimens were manufactured by combination of manual lay-up and vacuum bladder moulding technique using bi-directional natural jute mat (with two and three layers) and epoxy resin, each with 50mm inner diameter and 100mm length. Three different cross-sectional shapes were used; the hexagonal, octagonal, and decagonal of specimens. From the current unique experiment, it was exhibited most of the composite samples demonstrated stable and progressive deformation with acceptable repeatability during the test process. It also showed that the deformation characteristics and the energy absorption of the octagonal cross-section shape are better than the other cross-section shapes such as hexagonal and decagonal cross-sections shapes. Furthermore, the three laminated layers contributed to high specific energy absorption (SE) and better crushing efficiency (ɳc) for each profile. Overall, the octagonal pattern configuration with three plies can be considered as optimal for crashworthiness of structure application compared to other composite samples.

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“…They offer lightweight crashworthy structures, unlike the metallic materials general use [1][2][3]. Extensive testing on different kinds of GFRP circular composite tube has demonstrated that composite materials can offer incredibly higher levels of specific energy absorption (SEA) and energy absorption capacity (Et) than their metallic co-equals [4][5][6]. Metal tubes assimilate energy through performing progressive plastic deformation, while the composite tubes absorb energy through progressive crushing mechanism showing more energy absorption compared to similar metallic tube [7].The dominant parameters in the energy absorption of composite structures consist of a type and volume fraction of thefiber and matrix, geometrical shapes, layering configuration andmanufacturing conditions [8,9].Energy absorbers can take various forms, such as circular tubes [10][11][12][13][14][15], square tubes [16,17], tapered and corrugated tubes [18][19][20][21], and foam-filled structures [22,23].…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3] Extensive testing on different kinds of GFRP circular composite tube has demonstrated that composite materials can offer incredibly higher levels of SEA and energy absorption capacity (Et) than their metallic co-equals. [4][5][6] Metal tubes assimilate energy through performing progressive plastic deformation, while geometrical shapes, layering configuration and manufacturing conditions. 8,9 Energy absorbers can take various forms, such as circular tubes, [10][11][12][13][14][15] square tubes, 16,17 tapered and corrugated tubes, [18][19][20][21] and foam-filled structures.…”

Section: Introductionmentioning

confidence: 99%

Effect of layering layout on the energy absorbance of bamboo-inspired tubular composites

Tarafdar

Razmkhah

Ahmadi

et al. 2022

Journal of Reinforced Plastics and Composites

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Gradient distribution of vascular structure made the bamboo wall structure so effective which improved the load-bearing capacity of such bio-mimicked energy absorption structures and modify the crush behavior of thin-walled composite tubes. In this research, the influence of the layering design and stacking sequence on the crush behavior, failure mechanism and absorbed energy of bamboo-inspired GFRP composite tubes is assessed experimentally and numerically. Quasi-static compression tests were conducted to explore seven permutations of Coarse Woven (CW), Fine Woven (FW), and Unidirectional (UD) E/glass fiber sheets, taking into account the longitudinal vascular bundles strengthened by organic matrix. Samples were fabricated employing a modified hand laying up method by using mechanical pressure to obtain better surface finishing and interlaminar adhesion compared to conventional hand layering up methods. To evaluate the corresponding crashworthiness parameters and characterize the crushing behavior of composite tubes, quasi-static axial compressive loading was done. The numerical simulations were validated versus experiments by a commercial finite element (FE) LS-DYNA integrating material model 54. The predicted load-displacement curves and failure mechanisms of FE analysis demonstrate acceptable correlations with visual observations during experimentation. Furthermore, the parametric numerical was performed to examine the effect of different distributions of vascular bundles. The FE analysis results revealed that the crushing behavior of bio-inspired composite tubes depended substantially on layering configuration and the stacking sequence design. The outcomes showed that the combination of woven and unidirectional fibers, respectively, located in the inner layer and hoop direction provide the optimal layering configuration design in terms of crush length efficiency, crush load efficiency, Specific energy absorption, stable progressive crushing, and better manufacturing quality.

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Effects of triggering mechanisms on the crashworthiness characteristics of square woven jute/epoxy composite tubes

Cited by 18 publications

References 69 publications

Novel energy absorbent composites for crashworthiness applications

Novel energy absorbent composites for crashworthiness applications

Effect of Geometric Shape on the Crushing Performance of Natural Jute Mat/Epoxy Specimens Under Axial Quasi-Static Compression

Effect of layering layout on the energy absorbance of bamboo-inspired tubular composites

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