Next Generation Traveling-Wave Excitation System for Integrally Bladed Rotors
Publication: Journal of Aerospace Engineering
Volume 28, Issue 6
Abstract
An -harmonic traveling-wave excitation (nTWE) system that was developed for the U.S. air force research laboratory turbine engine fatigue facility (TEFF) is described. This traveling-wave system is designed to simulate engine order excitations on stationary integrally bladed rotors (IBRs) and dual flow-path IBRs (DFIBRs) for the purpose of measuring forced response amplification due to mistuning. This new system extends beyond traditional traveling-wave systems by its capability to generate a combination of engine order (EO) harmonics for IBRs as well as different EO harmonics simultaneously to both inner- and outer-blade sets of DFIBRs. This system can excite both IBRs and DFIBRs of differing sizes and number of blades with electromagnetic excitation. Scanning vibrometry mounted above the test specimen is used to measure any localization due to mistuning. Sources of error in the nTWE system are discussed and experimental forced response levels are shown for a 22-blade IBR.
Get full access to this article
View all available purchase options and get full access to this article.
References
Aldridge, D. F. (1992). “Mathematics of linear sweeps.” Can. J. Explor. Geophys., 28(1), 62–68.
Beck, J. A., Brown, J. M., Slater, J. C., and Cross, C. J. (2012). “Probabilistic mistuning assessment using nominal and geometry based mistuning methods.” J. Turbomach., 135(5), 051004.
Bendiksen, O. (2000). “Localization phenomena in structural dynamics.” Chaos, Solitons Fractals, 11(10), 1621–1660.
Bréard, C., Green, J. S., and Imregun, M. (2003). “Low-engine-order excitation mechanisms in axial-flow turbomachinery.” J. Propul. Power, 19(4), 704–712.
Feiner, D. M., and Griffin, J. H. (2004a). “Mistuning identification of bladed disks using a fundamental mistuning model—Part I: Theory.” J. Turbomach., 126(1), 150–158.
Feiner, D. M., and Griffin, J. H. (2004b). “Mistuning identification of bladed disks using a fundamental mistuning model—Part II: Application.” J. Turbomach., 126(1), 159–165.
Holland, D. E., Castanier, M. P., Ceccio, S. L., Epureanu, B. I., and Filippi, S. (2010). “Testing and calibration procedures for mistuning identification and traveling wave excitation of blisks.” J. Eng. Gas Turbines Power, 132(4), 042502.
Hou, J. (2006). “Cracking-induced mistuning in bladed disks.” AIAA J., 44(11), 2542–2546.
Jones, K. W., and Cross, C. J. (2003). “Traveling wave excitation system for bladed disks.” J. Propul. Power, 19(1), 135–141.
Judge, J. A., Pierre, C., and Ceccio, S. L. (2009). “Experimental mistuning identification in bladed disks using a component-mode-based reduced-order model.” AIAA J., 47(5), 1277–1287.
LabVIEW [Computer software]. Austin, TX, National Instruments.
Madden, A. C., Castanier, M. P., and Epureanu, B. I. (2008). “Reduced-order model construction procedure for robust mistuning identification of blisks.” AIAA J., 46(11), 2890–2898.
Madden, A. C., Castanier, M. P., and Epureanu, B. I. (2010). “Mistuning identification of blisks at higher frequencies.” Proc., 51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conf., American Institute of Aeronautics and Astronautics, Reston, VA.
Marinescu, O., Epureanu, B. I., and Banu, M. (2011). “Reduced order models of mistuned cracked bladed disks.” J. Vib. Acoust., 133(5), 051014.
Pichot, F., Laxalde, D., Sinou, J.-J., Thouverez, F., and Lombard, J.-P. (2006). “Mistuning identification for industrial blisks based on the best achievable eigenvector.” Comput. Struct., 84(29–30), 2033–2049.
Pierre, C. (1988). “Mode localization and eigenvalue loci veering phenomena in disordered structures.” J. Sound Vib., 126(3), 485–502.
Saito, K., Castanier, M. P., and Pierre, C. (2009). “Effects of a cracked blade on mistuned turbine engine rotor vibration.” J. Vib. Acoust., 131(6), 061006.
Sharma, O. P., Pickett, G. F., and Ni, R. H. (1992). “Assessment of unsteady flows in turbines.” J. Turbomach., 114(1), 79–90.
Information & Authors
Information
Published In
Journal of Aerospace Engineering
Volume 28 • Issue 6 • November 2015
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Sep 26, 2014
Accepted: Jan 12, 2015
Published online: Feb 24, 2015
Discussion open until: Jul 24, 2015
Published in print: Nov 1, 2015
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.