学术
Biomimetics of Campaniform Sensilla： Measuring Strain from the Deformation of Holes
Julian F. V. Vincent[1] Sally E. Clift[1] Carlo Menon[2]
[1]Department of Mechanical Engineering, The University of Bath, Bath BA2 7AY, UK [2]Advanced Concepts Team, European Space Agency, 2201 AZ Noordwijk, The Netherlands
文章出处:
《吉林大学仿生工程学报：英文版》-2007年4卷2期 -63-76页
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Biomimetics of Campaniform Sensilla： Measuring Strain from the Deformation of Holes
Abstract:
We present a bio-inspired strategy for designing embedded strain sensors in space structures. In insects, the campaniform sensillum is a hole extending through the cuticle arranged such that its shape changes in response to loads. The shape change is rotated through 90° by the suspension of a bell-shaped cap whose deflection is detected by a cell beneath the cuticle. It can be sensitive to displacements of the order of 1 nm. The essential morphology, a hole formed in a plate of fibrous composite mate- rial, was modelled by Skordos et al. who showed that global deformation of the plate （which can be flat, curved or a tube） induces higher local deformation of the hole due to its locally higher compliance. Further developments reported here show that this approach can be applied to groups of holes relative to their orientation. , The morphology of the sensillum in insects suggests that greater sensitivity can be achieved by arranging several holes in a regular pattern; that if the hole is oval it can be ＂aimed＂ to sense specific strain directions; and that either by controlling the shape of the hole or its relationship with other holes it can have a tuned response to dynamic strains. We investigate space applications in which novel bio-inspired strain sensors could successfully be used.[著者文摘]
Key words:
campaniform sensillum, strain, displacement, compliance, hole, remote sensing, fibrous composite
基金资助:
This research was carried out during a joint collaboration between University of Bath and the Advanced Concepts Team of ESA in the framework of the Ariadna program.
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