title: Antifatigue properties of dragonfly Pantala flavescens wings.
abstract: The wing of a dragonfly is thin and light, but can bear high frequent alternating stress and present excellent antifatigue properties. The surface morphology and microstructure of the wings of dragonfly Pantala flavescens were observed using SEM in this study. Based on the biological analysis method, the configuration, morphology, and structure of the vein were studied, and the antifatigue properties of the wings were investigated. The analytical results indicated that the longitudinal veins, cross veins, and membrane of dragonfly wing form a optimized network morphology and spacially truss-like structure which can restrain the formation and propagation of the fatigue cracks. The veins with multilayer structure present high strength, flexibility, and toughness, which are beneficial to bear alternating load during the flight of dragonfly. Through tensile-tensile fatigue failure tests, the results were verified and indicate that the wings of dragonfly P. flavescens have excellent antifatigue properties which are the results of the biological coupling and synergistic effect of morphological and structural factors.
authors.affiliation: Key Laboratory of Bionic Engineering (Ministry of Education, China), Jilin University, Changchun, 130025, People's Republic of China.
authors.forename: Xiu-Juan
authors.initials: XJ
authors.lastname: Li
authors.forename: Zhi-Hui
authors.initials: ZH
authors.lastname: Zhang
authors.forename: Yun-Hong
authors.initials: YH
authors.lastname: Liang
authors.forename: Lu-Quan
authors.initials: LQ
authors.lastname: Ren
authors.forename: Meng
authors.initials: M
authors.lastname: Jie
authors.forename: Zhi-Gang
authors.initials: ZG
authors.lastname: Yang
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D008855:Microscopy, Electron, Scanning; D063191:Odonata / Q000033:anatomy & histology* / Q000502:physiology / Q000648:ultrastructure; D014921:Wings, Animal / Q000033:anatomy & histology* / Q000502:physiology / Q000648:ultrastructure
keywords: antifatigue properties; configuration; dragonfly wings; morphology; structure