Damage detection of main rotor faults using a sensitivity-based approach

Jason S. Kiddy; Darryll J. Pines

doi:10.1117/12.275684

6 June 1997 Damage detection of main rotor faults using a sensitivity-based approach

Jason S. Kiddy, Darryll J. Pines

Proceedings Volume 3041, Smart Structures and Materials 1997: Smart Structures and Integrated Systems; (1997) https://doi.org/10.1117/12.275684
Event: Smart Structures and Materials '97, 1997, San Diego, CA, United States

Abstract

A sensitivity based modal damage detection and characterization approach is applied to a rotating composite beam in vacuum. This damage detection methodology is analytically shown to be capable of detecting changes of both mass and stiffness in the rotating beam. The algorithm developed in this work is based on a finite element model of the rotating beam in the flap and lag directions. Elemental sensitivities are derived including an enhanced stiffness sensitivity arising from centrifugal loading of the composite beam. Damage in the structure is detected by performing a constrained minimization on the modal residuals of the structural response.

Citation Download Citation

Jason S. Kiddy and Darryll J. Pines "Damage detection of main rotor faults using a sensitivity-based approach", Proc. SPIE 3041, Smart Structures and Materials 1997: Smart Structures and Integrated Systems, (6 June 1997); https://doi.org/10.1117/12.275684

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