Abstract
Chapter 5 illustrates the genetic fuzzy system for health monitoring of a composite helicopter rotor in forward flight. The rotor is the most important component of the helicopter, and its health is critical for helicopter performance and control. Progressive damage accumulation is considered in the composite material. This damage model considers matrix cracking as the first damage type, followed by debonding/delamination, and finally fiber breakage. The damaged helicopter rotor is modeled using a finite element simulation which solves the rotor blade equations and vehicle trim equations. This aeroelastic simulation provides the blade response, blade and hub loads, strains, etc., for a damaged composite helicopter rotor in forward flight. The genetic fuzzy system is developed and tested for this helicopter rotor health monitoring problem. Different combinations of measurements are considered, and their advantages and shortcomings are evaluated. Finally, a life prediction approach is developed based on phenomenological damage growth models, and the genetic fuzzy system is illustrated for damage detection as well as life prediction for a helicopter rotor.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Hodges, D.H., Dowell, E.H.: Nonlinear equations of motion for the elastic bending and torsion of twisted nonuniform blades. NASA, TND-7818 (1974)
Leishman, J.G.: Modeling of subsonic unsteady aerodynamics for rotary wing applications. J. Am. Helicopter Soc. 35(1), 28–35 (1990)
Chopra, I., Sivaneri, N.T.: Aeroelastic stability of rotor blades using finite element analysis. NASA CR 166389 (1982)
Bir, G., Chopra, I.: University of Maryland Advanced Rotorcraft Code (UMARC) theory manual. UM-AERO Report 92-02 (1992)
Ganguli, R.: Optimum design of a low vibration helicopter rotor using aeroelastic analysis and response surface methods. J. Sound Vib. 258(2), 327–344 (2002)
Johnson, W.: Helicopter Theory. Princeton University Press, Princeton (1980)
Lim, J.W., Chopra, I.: Aeroelastic optimization of a helicopter rotor using an efficient sensitivity analysis. J. Aircr. 28(1), 29–37 (1991)
Chandra, R., Chopra, I.: Structural response of composite beams and blades with elastic couplings. Compos. Eng. 2(5–6), 347–374 (1992)
Adolfsson, E., Gudmundson, P.: Thermoelastic properties in combined bending and extension of thin composite laminates with transverse matrix cracks. Int. J. Solids Struct. 34(16), 2035–2060 (1997)
Gudmundson, P., Zang, W.: An analytic model for thermoelastic properties of composite laminates containing transverse matrix cracks. Int. J. Solids Struct. 30(23), 3211–3231 (1993)
Shahid, I., Chang, F.K.: An accumulative damage model for tensile and shear failures of laminated composite plates. J. Compos. Mater. 29(7), 926–981 (1995)
Mao, H., Mahadevan, S.: Fatigue damage modelling of composite materials. Compos. Struct. 58(4), 405–410 (2001)
Pawar, P.M., Ganguli, R.: Modeling multi-layer matrix cracking in thin walled composite helicopter rotor blades. J. Am. Helicopter Soc. 50(3), 354–366 (2005)
Pawar, P.M., Ganguli, R.: Modeling progressive damage accumulation in thin walled composite beams for rotor blade applications. Compos. Sci. Technol. 66(13), 2337–2349 (2006)
Pawar, P.M., Ganguli, R.: On the effect of progressive damage on composite helicopter rotor system behavior. Compos. Struct. 78, 410–423 (2007)
Pawar, P.M., Ganguli, R.: Helicopter rotor health monitoring—a review. Journal of Aerospace Engineering 221(5), 631–647 (2007). Proceedings of the Institution of Mechanical Engineers
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
Copyright information
© 2011 Springer-Verlag London Limited
About this chapter
Cite this chapter
Pawar, P.M., Ganguli, R. (2011). Structural Health Monitoring of Composite Helicopter Rotor. In: Structural Health Monitoring Using Genetic Fuzzy Systems. Springer, London. https://doi.org/10.1007/978-0-85729-907-9_5
Download citation
DOI: https://doi.org/10.1007/978-0-85729-907-9_5
Publisher Name: Springer, London
Print ISBN: 978-0-85729-906-2
Online ISBN: 978-0-85729-907-9
eBook Packages: EngineeringEngineering (R0)