Stiffness evaluation of the leading edge of the dragonfly wing via laser vibrometer.
Chen, Y. H.
Huang, W. M.
Date of Issue2013
School of Mechanical and Aerospace Engineering
The material property of the leading edge vein (LEV) of the dragonfly wing is investigated. A new vibration method is developed using a laser vibrometer and mini-shaker. The natural frequency of a cantilevered LEV is determined via lateral oscillation. As a result, the elastic modulus of a LEV sample from a dragonfly wing is found to be in the range of the elastic hydrocarbon polymer, while a dead dragonfly is similar to low density polyethylene. The loss of water contents in the veins increases the stiffness of the LEV by approximately 20 times.
© 2013 Elsevier B.V. This is the author created version of a work that has been peer reviewed and accepted for publication by Materials letters, Elsevier B.V. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1016/j.matlet.2013.01.110].