Microstructure and nanomechanical properties of the wing membrane of dragonfly

Song, Fan; Xiao, Kai; Bai, Ke; Bai, Yue

doi:10.1016/j.msea.2007.01.136

Cited by 86 publications

(76 citation statements)

References 17 publications

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“…This allows the vein to endure greater bending loading and torsional deformation. Song et al [6] concluded that the membrane is divided into three layers, a dorsal surface, a middle layer, and a ventral surface. These divisions were evident at the nano scale, along the orientation of the thickness of the membrane, and arose from their disparate functions.…”

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An organic junction between the vein and membrane of the dragonfly wing

et al. 2011

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A dragonfly wing consists of membranes and both longitudinal and cross veins. We observed the microstructure cross-section at several locations in the dragonfly wing using environmental scanning electron microscopy (ESEM). The organic nature of the junction between the vein and the membrane was clearly identifiable. The membrane was divided into two layers, the upper epidermis and the lower epidermis. These layers extend around the sandwich structure vein, and combine with the adjacent membrane at a symmetrical location along the vein. Thus, we defined this as an organic junction between the vein and the membranes. The organic junction is able to form a tight corrugation angle, which dramatically increases both the warping rigidity and the strength of the wing, but not the torsional rigidity. The torsional deformation is primarily controlled by the microstructure of the longitudinal veins, and is based on the relative rotation angle between the epidermal layer and the inner layer of the vein that forms the zigzag section.

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confidence: 99%

“…The ratio of the warping rigidity between an uncorrugated and corrugated wing is approximated as [6] ( )( )( )( ) …”

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An organic junction between the vein and membrane of the dragonfly wing

et al. 2011

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“…The measurements of the mechanical properties of wings are rare. In the field of microsystem technologies, polyimide has good adaptability and good transfer effect, so polyimide with 7.5 lm thick is chosen for wing membrane, its young's modulus is 2.5 GPa, close to that of the membranes of living and dead dragonflies which are 2.85 ± 0.23 and 2.74 ± 0.28 GPa, respectively, obtained by Song et al (2007) using nanoindentation. Meanwhile, the flexural stiffness of the wings come from the thickness of the vein, changing the thickness of the veins, we can adapt the material stiffness value.…”

Section: Wingsmentioning

confidence: 99%

The design and micromachining of an electromagnetic MEMS flapping-wing micro air vehicle

et al. 2011

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An electromagnetic MEMS flapping-wing micro air vehicle at insect scale is presented. The detailed scheme, design, micro fabrication and experiment are given in this paper. Firstly, by commercial software ANSYS and MATLAB, electromagnetic analysis, modal analysis and kinetics analysis are proposed. Moreover, based on the result of theoretical analysis, appropriate structure, material and inherent frequency are selected. Then, a new LIGA-like process based on SU-8 photoresist technology is adopted to fabricate thorax, tergum and vein. Finally, a 3.5 cm wingspan, 144 mg weight prototype is integrated, and then we finish the flapping test for this prototype, which has a flapping resonance frequency range of 120-150 Hz. The test result demonstrates the feasibility solution in the development of FMAV based on MEMS, this work is a stepping-stone on the path toward flying robotic insects.

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“…Alternatively, tremendous progress was done in the field of aerodynamics and Kinematics [7][8][9][10][11][12][13][14][15][16]. Vincent [17] found that the material of insect wing was similar to composite materials, many other researchers also believed that the wing of natural insects are composite structures [18][19][20]. Composite materials are currently used for UAVs [21,22].…”

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confidence: 99%

Numerical Analysis of the Influence of Fibre Orientations in a two-layered Biomimetic Flapping Wing

Rayhan

Jian

2017

MATEC Web Conf.

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Abstract.A numerical study was carried out to investigate the effects of fibre orientation angles in an adopted biomimetic flapping wing having two-layered Carbon/Epoxy Composite T300/5208. The purpose of this paper is to understand how different orientation angles with different combinations affect the stresses of a flapping-wing. One flapping cycle was divided into twelve segments and both maximum stress and deformation were calculated for all the segments. The results revealed that, the maximum stress was produced in [0/-45] combination, where the least was found for [45/0]. For all the simulated wings, deformation was found less than 1.8 mm. ANSYS DesignModeler and Static Structural was used to design and perform structural analysis. The findings are helpful in answering why insect wings are so impeccable, thus providing a possibility of improving the design of flapping-wing aerial vehicles.

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Microstructure and nanomechanical properties of the wing membrane of dragonfly

Cited by 86 publications

References 17 publications

An organic junction between the vein and membrane of the dragonfly wing

An organic junction between the vein and membrane of the dragonfly wing

The design and micromachining of an electromagnetic MEMS flapping-wing micro air vehicle

Numerical Analysis of the Influence of Fibre Orientations in a two-layered Biomimetic Flapping Wing

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