Significance Analysis of Flexural Behaviour of Hybrid Sandwich Panels

Fajrin, Jauhar; Zhuge, Yan; Bullen, F; Wang, Hao

doi:10.4236/ojce.2013.33b001

Cited by 10 publications

(9 citation statements)

References 7 publications

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“…An experimental investigation with different wood based materials for the intermediate layer in smallscale samples was conducted by Fajrin et al [2] and the results confirmed the claim of the previous study [1]. A further investigation with statistical design of experiment approach has also confirmed the significant impovement achieved by the introduction of the intermediate layer [3]. It was found that intermediate layer made of jute fiber composite and medium density fiber improved the structural performance of the hybrid sandwich panel.…”

Section: Introductionsupporting

confidence: 68%

Experimental and Theoretical Deflections of Hybrid Composite Sandwich Panel under Four-point Bending Load

Fajrin

Zhuge

Wang

et al. 2017

ced

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This paper presents a comparison of theoretical and experimental deflection of a hybrid sandwich panel under four-point bending load. The paper initially presents few basic equations developed under three-point load, followed by development of model under four-point bending load and a comparative analysis between theoretical and experimental results. It was found that the proposed model for predicting the deflection of hybrid sandwich panels provided fair agreement with the experimental values. Most of the sandwich panels showed theoretical deflection values higher than the experimental values, which is desirable in the design. It was also noticed that the introduction of intermediate layer does not contribute much to reduce the deflection of sandwich panel as the main contributor for the total deflection was the shear deformation of the core that mostly determined by the geometric of the samples and the thickness of the core.

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Section: Introductionsupporting

confidence: 68%

Experimental and Theoretical Deflections of Hybrid Composite Sandwich Panel under Four-point Bending Load

Fajrin

Zhuge

Wang

et al. 2017

ced

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“…Research into the feasibility of reinforcing epoxy or polyester with natural fibers has been reported in several literature [31][32][33][34]. A comprehensive theoretical framework for the new sandwich structure panel developed in this research under flexural loading was thoroughly discussed [35], while the statistical analysis of the flexural test was reported earlier [36]. More recently, a statistical analysis of the in-plane shear behaviour of the newly developed panel was also reported [37].…”

Section: Introductionmentioning

confidence: 99%

Flexural behaviour of hybrid sandwich panel with natural fiber composites as the intermediate layer

Fajrin¹,

Zhuge²,

Bullen³

et al. 2016

J. MECH. ENG. SCI.

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Polymeric composites reinforced with natural fibers have raised more attention as the alternative building materials. In this work, natural fiber composites prepared from jute and hemp fiber were proposed for the intermediate layer of a hybrid sandwich panel. This paper presented the flexural behavior of the newly developed hybrid sandwich panel which included the comparison of the ultimate load, load-deflection behavior, load-strain behavior and failure modes. The study was designed as a single factor experiment where the performance of hybrid sandwich panels containing jute fiber composite (JFC) and hemp fiber composite (HFC) as the intermediate layer was compared to the control (CTR) which was a conventional sandwich panel without an intermediate layer. A static flexural test under a four-point bending load scheme was performed in accordance with the ASTM C 393-00 standard. Aluminium sheet was used as the skins, while expanded polystyrene (EPS) was employed for the core. The testing was performed using a 100 kN servohydraulic machine with a loading rate of 5 mm/min. The applied load, displacement and strains were obtained using data logger. The results demonstrated that the hybrid sandwich panel exhibited a more superior performance than the conventional sandwich panels. The intermediate layer contributed significantly to enhancing the load carrying capacity of the hybrid sandwich panel. The load carrying capacity of hybrid panel with the JFC intermediate layer was 29.60% higher than the conventional sandwich panel, and correspondingly 93.46% higher for the sandwich panel with the HFC intermediate layer.The hybrid sandwich panels also developed a much larger area under the load-deflection curve, indicating greater toughness. The introduction of intermediate layer helped the hybrid sandwich panels to sustain a larger strain prior to reach their ultimate loads, resulting in a higher deformation capability. Indentation and core shear were observed as the failure mode of the conventional sandwich panel. Meanwhile, core shear and delamination were identified as the failure mode of the hybrid sandwich panel.

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“…A hybrid sandwich panel that is formed by inserting intermediate layer between skins and core has shown excellent performance under flexural loading as reported by Fajrin et al [1,2]. The concept of hybrid sandwich panel with intermediate layer itself was first developed by Mamalis et al [3].…”

Section: Introductionmentioning

confidence: 93%

The Application of Statistical Design of Experiments to Study the In-Plane Shear Behaviour of Hybrid Composite Sandwich Panel

Fajrin

2016

ced

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This paper presents a statistical aspect of experimental study on the in-plane shear behaviour of hybrid composite sandwich panel with intermediate layer. The study was aimed at providing information of how significant the contribution of intermediate layer to the in-plane shear behaviour of new developed sandwich panel. The investigation was designed as a single factor experimental design and the results were throughly analysed with statistics software; Minitab 15. The panels were tested by applying a tensile force along the diagonal of the test frame simulating pure shear using a 100 kN MTS servo-hydraulic UTM. The result shows that the incorporation of intermediate layer has sinificantly enhanced the in-plane shear behaviour of hybrid composite sandwich panel. The statistical analysis shows that the value of F0 is much higher than the value of Ftable, which has a meaning that the improvement provided by the incorporation of intermediate layer is statistically significant.

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Significance Analysis of Flexural Behaviour of Hybrid Sandwich Panels

Cited by 10 publications

References 7 publications

Experimental and Theoretical Deflections of Hybrid Composite Sandwich Panel under Four-point Bending Load

Experimental and Theoretical Deflections of Hybrid Composite Sandwich Panel under Four-point Bending Load

Flexural behaviour of hybrid sandwich panel with natural fiber composites as the intermediate layer

The Application of Statistical Design of Experiments to Study the In-Plane Shear Behaviour of Hybrid Composite Sandwich Panel

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