Abstract
An efficient system for high-resolution measurements of a bat wing’s membrane during flight is presented, proving the feasibility of dynamic strain measurements on bats wing membranes during flapping. Data were collected from wind tunnel wind-off flights of a Jamaican fruit bat, Artibeus jamaicensis, a nocturnal and frugivorous specie trained by Brown University team to fly back and forth in the test section. Visual image correlation was used for image post-processing providing spatial highresolution three-dimensional displacements and strains on the bat’s wing.
Temporal membrane surface-averaged strain analysis showed a level of strain in the X direction (spanwise) approximately three times larger then the Y direction (chordwise) with values around 10% and 3%, respectively. Strains are estimated from an unknown reference state at the beginning of each recorded sequence. Full surface membrane strain distribution shows a consistent strain-relief effect around the ring finger during downstroke in the X direction (spanwise). Temporal wing section shape analysis during a down stroke revealed a higher camber and a significant pitch-up twist of the ring finger respect to the free membrane between the little and ring finger.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Raney, D., L., Waszak, M., R., “Biologically Inspired Micro-Flight Research,” SAE 2003-01-3042, 2003.
Albertani, R., Stanford, B., Hubner, J. P., and Ifju, P., “Aerodynamic Characterization and Deformation Measurements of a Flexible Wing Micro Air Vehicle,” SEM Journal, DOI: 10.1007/ s11340-006-9025-5, 2006.
Sane, S. P., “The aerodynamics of insect flight,” J. Exp. Biol. 206, 4191–4208, 2003..
Muijres, F. T., Johansson, L. C., Barfield, R., Wolf, M., Spedding, G. R. and Hedenström, A., “Leading-Edge Vortex Improves Lift in Slow-Flying Bats,” Science 319, 1250–1253, 2008.
Warrick, D. R., Tobalske, B. W. and Powers, D. R., “Lift production in the hovering hummingbird.,” Proceedings of the Royal Society B: Biological Sciences 276, 3747–3752, 2009.
Norberg, U. M., “Aerodynamics, kinematics, and energetics of horizontal flapping flight in the long-eared bat Plecotus auritus,” J. Exp. Biol., 65, 179–212, 1976.
Aldridge, H. D., “Kinematics and aerodynamics of the greater horseshoe bat, Rhinolophus ferrumequinum, in horizontal flight at various flight speeds,” J. Exp. Biol., 126, 479–497, 1986.
Riskin, D. K., Bahlman, J. W., Hubel, T. Y., Ratcliffe, J. M., Kunz, T. H. and Swartz, S. M., “Bats go head-under-heels: the biomechanics of landing on a ceiling,” J. Exp. Biol., 212, 945–953, 2009.
Riskin, D. K., Willis, D. J., Iriarte-Díaz, J., Hedrick, T. L., Kostandov, M., Chen, J., Laidlaw, D. H., Breuer, K. S. and Swartz, S. M., “Quantifying the complexity of bat wing kinematics,” Journal of Theoretical Biology, 254, 604–615, 2008.
Hubel, T., Hristov, N., Swartz, S. M. and Breuer, K. S., “Time-resolved wake structure and kinematics of bat flight,” Exp. Fluids 46, 933–943, 2009.
Hubel, T. Y., Riskin, D. K., Swartz, S. M. and Breuer, K. (in review), “Wake structure and wing kinematics: the flight of the lesser short-nosed fruit bat, Cynopterus brachyotis”.
Swartz, S., Bennett, M., Carrier, D. R., “Wing bone stresses in free flying bats and the evolution of skeletal design for flight,” Nature, Vol. 359, 726–729, Nature Publishing Group, October 22, 1992.
Swartz, S. M., Groves, M. S., Kim, H. D. and Walsh, W. R., “Mechanical properties of bat wing membrane skin,” J. Zool., 239, 357–378, 1996.
Sutton, M. A., Cheng, M., Peters, W. H., Chao, Y. J. and McNeill, S. R., “Application of an optimized digital correlation method to planar deformation analysis,” Image and Vision Computing, 4(3), pp. 143–151, 1986.
Sutton, M. A., Turner, J. L., Bruck, H. A., Chae, T. A., “Full field representation of the discretely sampled surface deformations for displacement and strain analysis,“ Experimental Mechanics, 1991:31(2): 168–77, 1991.
Babcock, J., Scheffer, R., Albertani, R., “Experimental Data for Micro Air Vehicles with Pliant Wings in Unsteady Conditions,” 27th AIAA Applied Aerodynamic and Atmospheric Flight Mechanics Conference, Chicago, IL, August, 2009.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2011 Springer Science+Business Media, LLC
About this paper
Cite this paper
Albertani, R., Hubel, T., Swartz, S.M., Breuer, K.S., Evers, J. (2011). In-Flight Wing-Membrane Strain Measurements on Bats. In: Proulx, T. (eds) Experimental and Applied Mechanics, Volume 6. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-9792-0_68
Download citation
DOI: https://doi.org/10.1007/978-1-4419-9792-0_68
Published:
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4419-9497-4
Online ISBN: 978-1-4419-9792-0
eBook Packages: EngineeringEngineering (R0)