Failure mechanism of woven natural silk/epoxy rectangular composite tubes under axial quasi-static crushing test using trigger mechanism

Eshkoor, R.A.; Ude, Albert Uchenna; Oshkovr, Simin Ataollahi; Sulong, Abu Bakar; Zulkifli, Rozli; Ariffin, Ahmad Kamal; Azhari, Che Husna

doi:10.1016/j.ijimpeng.2013.09.004

Cited by 56 publications

(22 citation statements)

References 21 publications

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“…The specific energy absorption (Es) is the total energy absorbed (Et) per unit mass (m) of the structure absorbed [49,50,51], which can be calculated from the following Eq.…”

Section: Specific Energy Absorption (Es)mentioning

confidence: 99%

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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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“…The specific energy absorption (Es) is the total energy absorbed (Et) per unit mass (m) of the structure absorbed [49,50,51], which can be calculated from the following Eq.…”

Section: Specific Energy Absorption (Es)mentioning

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.

View full text Add to dashboard Cite

show abstract

“…The specific energy absorption (SEA) is defined as the total absorbed energy (E t ) per unit mass (m) of the absorbed structure as in the following equation [4,8,13] : ‫ܣܧܵ‬ = ா (2) Where the total absorbed energy is the work done by the crushing force represented by the area under the axial force versus axial displacement curve and can be determined as follows [4,8,13] :…”

Section: Specific Energy Absorptionmentioning

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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“…The more the fiber proportion, the higher the SEA and the amplitude of the mean force in the plateau region [20]. As for the case of the influence of the structure profile, these result must be put into perspective with the kind of fibers [23]. Nevertheless, it is proven that the stability of the crushing process in the plateau region, and the amplitude and frequency of the mean force oscillations, are both related to damage modes of the material in the core of the laminate but are also influenced by the waves of loading that come directly from the contact vicinity.…”

Section: Materials Effects On Initiation and Stabilization Of The Processmentioning

confidence: 99%

Stabilization of the Numerical Priming to Stabilization Phenomenon in the Crushing of a Composite Panel Using Local and Diffuse Damage Laws

Espinosa

Tostain²,

Rivallant

2016

Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016)

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Failure mechanism of woven natural silk/epoxy rectangular composite tubes under axial quasi-static crushing test using trigger mechanism

Cited by 56 publications

References 21 publications

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

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

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

Stabilization of the Numerical Priming to Stabilization Phenomenon in the Crushing of a Composite Panel Using Local and Diffuse Damage Laws

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