Crashworthiness characteristics investigation of silk/epoxy composite square tubes

Oshkovr, Simin Ataollahi; Eshkoor, R.A.; Taher, Siavash Talebi; Ariffin, Ahmad Kamal; Azhari, Che Husna

doi:10.1016/j.compstruct.2012.03.031

Cited by 74 publications

(34 citation statements)

References 10 publications

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“…Lastly, splaying failure mode dominated the post-crushing stage as clearly illustrated in Figures 2(d-f). The studies by Oshkovr et al [7] and Eshkoor et al [8] On silk/epoxy tubes showed that generally buckling (either local buckling or mid-length buckling) and hinge formation are the two main characteristics of woven silk/epoxy tubes, displaying a catastrophic failure.…”

Section: Discussionmentioning

confidence: 99%

Experimental Studies on Crushing Behaviour of Hexagonal Composite Tubes

Alkbir¹,

Mohamed²,

Sapuan³

et al. 2017

JTEFT

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In this study, the effects of mandrel geometry on the crashworthiness performance of the fabric plain weave /epoxy hexagonal tubes are investigated. The energy absorption capacity of the tubes is investigated under uniaxial compression. An experimental, the crushing behaviour of composite hexagonally with aspect ratio 70 and different hexagonal angles ranging from 35˚ to 55˚ in 10˚ increment under axial cashing load were considered. The influence of tube side angles on the crashworthiness of (FPWEH) tubes is determined. Compressive testing indicates that the (H.70.45˚) tube provides a specific absorbed energy of 10.7 (kJ/kg), as well as average crushing load, which is the best value compared with other tubes. Furthermore, the failure modes noted as the progressive failure mode, Therefore, this study suggests that FPWEH tubes could be used in several structural applications, i.e. in automotive as energy absorbers and in civil infrastructure as poles.

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Section: Discussionmentioning

confidence: 99%

Experimental Studies on Crushing Behaviour of Hexagonal Composite Tubes

Alkbir¹,

Mohamed²,

Sapuan³

et al. 2017

JTEFT

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“…The CFE for the composite tubes under lateral loading is determined using the following equation [2,5].…”

Section: D2me 2016mentioning

confidence: 99%

“…The crush behaviour of composite structures offers distinct advantages for automotive applications and has been the subject of numerous investigations [3]. Several studies performed on composite structures like tubes [3][4][5][6][7][8][9][10] and cones [11][12][13][14] have been carried out to investigate the energy absorption capability and failure mechanism of these structures at different testing conditions. Researchers found that, high energy absorption can be obtained during the progressive crushing of composite tubes and cones under axial loading.…”

Section: Introductionmentioning

confidence: 99%

Axial Crushing and Energy Absorption of Empty and Foam Filled Jute-glass/ Epoxy Bi-tubes

Khalid

Morsidi

2016

MATEC Web Conf.

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Abstract. Experimental work on the axial crushing of empty and polyurethane foam filled bitubular composite cone-tube has been carried out. Hand lay-up method was used to fabricate the bi-tubes using woven roving glass, jute and hybrid jute-glass/epoxy materials. The tubes were of 56 mm diameter, and the cones top diameters were 65 mm. Cone semi-apical angles of 5°, 10°, 15 o , 20° and 25 o were examined. Height of 120 mm was maintained for all the fabricated specimens. Effects of material used, cone semi apical angle and foam filler on the load-displacement relation, maximum load, crush force efficiency, and the specific energy absorption and failure mode were investigated. Results show that the foam filler improved the progressive crushing process, increased the maximum load and the absorbed energy of the bitubes. The maximum crushing load and the specific energy absorption increased with increasing the cone semi apical angle up to 20 o for the empty bi-tubes and up to 25 o for the foam filled bi-tubes. Progressive failure mode with fiber and matrix cracking was observed at the top narrow side of the fractured bi-tubes as well as at the bottom surface of 20 o and 25 o cone semi-apical angle bi-tubes.

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“…Crushing force efficiency (CFE) is an important factor in measuring crushing performance and evaluating the crashworthiness of energy absorbing parts [41,42]. The crushing force efficiency (CFE) of the composite can be defined as the average crushing load ( m P ) divided by the max crushing load ( i P ) whose value is calculated from the following mathematical Eq.…”

Section: Crush Force Efficiencymentioning

confidence: 99%

“…Other studies on composite structures such as cones [34,35] and tubes [36][37][38][39] to investigate the energy absorption capacity of these structures under different test conditions has been done. Researchers have found that high energy absorption is obtained during progressive crushing of the composite tubes and cones under axial load.…”

Section: Introductionmentioning

confidence: 99%

Quasi-static crush behaviour of environmentally friendly kenaf/wool epoxy composites elliptical tube

Alkateb¹,

Sapuan²,

Leman³

et al. 2018

J. MECH. ENG. SCI.

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This current study is to investigate the behaviour of the kenaf/wool natural fibre. Reinforced composite elliptical cones with different content of fibre for each of the two types separately in absorbing energy and the load capacity, the lack studies about the composite elliptical tube, our focus was on this shape of shells of effect content of fibre for each of the two types separately. Various fibre contents were considered, including 30 wt%, 35 wt% and 40 wt%. The composite elliptical tubes were subjected to an axial quasi-static crushing test to achieve the study objectives; the methodology has been divided into three main sections concerning the problem statement, the first section is the mandrels preparation; the second section is specimen's fabrication process and finally is the crushing test. This study concerns the usage of the composite elliptical tube as a collapsible energy absorbing device within an automobile structure, which is supported at the distal end (i.e. the point of attachment) by a stronger structure and is designed to behave in a manner more similar to the quasi-static axial regular progressive mode. Therefore, quasi-static axial compression tests were performed on the tubes using INSTRON universal servohydraulic testing machine. The materials used in this study are polymer resin and kenaf/wool fibres. Environmentally friendly kenaf and wool fibre were used in this study due to several advantages such as environmentally benign, lightweight, low cost, no health risk, and availability. Results showed that including 30 wt% has a higher value of load-caring capacity and energy-absorption capability than including 35wt% and including 40 wt%. The results also show that the wool fibre has a higher value of load-carrying capacity and energy-absorption capability than kenaf fibre.

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Crashworthiness characteristics investigation of silk/epoxy composite square tubes

Cited by 74 publications

References 10 publications

Experimental Studies on Crushing Behaviour of Hexagonal Composite Tubes

Experimental Studies on Crushing Behaviour of Hexagonal Composite Tubes

Axial Crushing and Energy Absorption of Empty and Foam Filled Jute-glass/ Epoxy Bi-tubes

Quasi-static crush behaviour of environmentally friendly kenaf/wool epoxy composites elliptical tube

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