Structure and tensile properties of the forewing costal vein of the honeybee Apis mellifera.
Soft Matter
; 16(16): 4057-4064, 2020 Apr 29.
Article
en En
| MEDLINE
| ID: mdl-32285868
ABSTRACT
In this study, we investigated the morphological features and tensile properties of the forewing costal vein of the honeybee (Apis mellifera) under fresh, dry and in vitro-time varied conditions. The costal vein is composed of an outer sub-vein and an inner vein starting from the wing base to nearly 50% of the wing span and then they are fused into one vein extending to the wing tip. Confocal laser scanning microscopy revealed that the outer sub-vein with red autofluorescence is stiffer than the inner one with green autofluorescence, and the membrane in the gap between the sub-veins exhibited a long blue-autofluorescence resilin stripe. Considering the irregular cross-sectional shape of the costal vein, cross-sections of the tested specimens after tensile failure were analysed using scanning electron microscopy, to precisely calculate their cross-sectional areas by a customized MATLAB program. The Young's modulus and tensile strength of fresh specimens were â¼4.78 GPa and â¼119.84 MPa, which are lower than those of dry specimens (â¼9.08 GPa and â¼154.45 MPa). However, the tensile strain had the opposite relationship (fresh â¼0.031, dry â¼0.018). Thus, specimen desiccation results in increasing stiffness and brittleness. The morphological features and material properties of the costal vein taken together represent a tradeoff between both deformability and stiffness. Our study provides guidance for material selection and bionic design of the technical wings of flapping micro aerial vehicles.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Venas
/
Alas de Animales
/
Abejas
Límite:
Animals
Idioma:
En
Revista:
Soft Matter
Año:
2020
Tipo del documento:
Article
País de afiliación:
Alemania