Wings fold multiple times without wear: beetles
Wings of beetles fold multiple times without wear or fatigue by having resilin in key joints.
|Biomimetic Application Ideas|
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"This account shows the distribution of elastic elements in hind wings in the scarabaeid Pachnoda marginata and coccinellid Coccinella septempunctata (both Coleoptera). Occurrence of resilin, a rubber–like protein, in some mobile joints together with data on wing unfolding and flight kinematics suggest that resilin in the beetle wing has multiple functions. First, the distribution pattern of resilin in the wing correlates with the particular folding pattern of the wing. Second, our data show that resilin occurs at the places where extra elasticity is needed, for example in wing folds, to prevent material damage during repeated folding and unfolding. Third, resilin provides the wing with elasticity in order to be deformable by aerodynamic forces. This may result in elastic energy storage in the wing." (Haas et al. 2000:1375)
Organism/taxonomy data provided by:
Species 2000 & ITIS Catalogue of Life: 2008 Annual Checklist
Application Ideas: Creation of any material that needs to be repeatedly folded and unfolded with minimal wear, such as tents, clothing, folding chairs, self-deployable structures.
Industrial Sector(s) interested in this strategy: Manufacturing, construction, clothing
Max-Planck-Institut für Metallforschung