Document Type : Scientific extension

Author

Assistant Professor, Department of Mechnanical Enginnering, Najafabad Branch Islamic Azad University, Najafabad, Iran

Abstract

Ground vibration test (GVT) is one of the standard structural tests required for designed passenger aircrafts. This test is performed to derive the experimental dynamical model of aircraft structure. The process of executing this test involves test planning, structural preparation, data gathering, and extraction of dynamic parameters from the test data. In the present study, the practical implementation process of each step is described. Given the size and complexity of this test, certain techniques, hardware, and software are to be investigated. The global experience of performing this test is briefly discussed. Finally, a typical setup for a ground vibration test of a large aircraft is introduced and described. ‌‌

Keywords

[1] Ansari, A.R. and  Novinzadeh, A.R.B.,“Designing a Control System for an Airplane Wing Flutter Employing Gas Actuators”, International Journal of Aerospace Engineering, Vol. 2017 , pp. 1-9, 2017.
[2] Salehi, M., “An Overview of the Research on Flight Flutter Testing”, Journal of Technology in Aerospace Engineering, Vol. 1, No. 3, pp. 17-30, 2018 (In Persian).
[3] Federal Aviation Administration (FAA), Federal Aviation Regulations Part. 25: Airworthiness Standards: Transport Category Airplanes, 2017.
[4] Peeters, B., Climent, H., de Diego, R., Alba, J. Ahlquist, J.R., Carreno, J.M., Hendricx, W., Rega, A., Garcia, G., Deweer, J., and Debille, J., “Modern Solutions for Ground Vibration Testing of Large Aircraft”, ThE 26th International Modal Analysis Conference, Orlando, Florida, USA, 2008.
[5] Harris, C.M. and Piersol, A.G., Harris’ Shock and Vibration Handbook, McGraw Hill Handbooks, New York, USA, 2002.
[6] Ahlquist, J.R., Carreño, J.M., Climent, H., Diego, R., and Alba, J., “Assessment of Nonlinear Structural Response in A400M GVT”, Proceedings of the IMAC-XXVIII, Florida USA, 2010.
[7] Ewins, D.J., “Modal Testing and/or Modal Analysis?”, Proceedings of the Sixth European Conference on Structural Dynamics, EURODYN 2005, Paris, France, 2005.
[8] Szkudlarek, W., Mizutani, A., Peeters, B., Luczak, M., and Kahsin, M., “Ground Vibration Testing, Finite Element Modeling and Correlation of a Composite Hobby Aircraft”, The 13th International Conference on Aerospace Sciences and Aviation Technology, Cairo, Egypt, 2009.
[9] Giacomin, A.A., Nabarrete, A., Costa, M.C.A., and Digou,T.C., Study on the Soft Suspension Behavior for Aircraft Ground Vibration Test Set-Up, Springer International Publishing, New York, 2019.
[10] Govers, Y., “AIRBUS A350XWB Ground Vibration Testing: Efficient Techniques for Customer Oriented On-site Modal Identification”, International Conference on Noise and Vibration Engineering ISMA2014, Leuven, Belgium, 2014.
[11]NejadEnsan, M. and Wickramasinghe, V., “Methodology for Ground and Flight Vibration Testing of  Light Aircraft”, Canadian Aeronautics and Space Journal, Vol. 60, No. 1, pp. 1-8, 2014.
[13] Brumat, M., Slavič, J., and Boltežar, M., “Spatial Damping Identification in the Frequency Domain- A Theoretical and Experimental Comparison”, Journal of Sound and Vibration, Vol. 376, pp. 182-193, 2016.
[14] Avitabile, P., Modal Testing: A Practitioner’s Guide, John Wiley & Sons Ltd, New York, 2018.
[15] Lau, J., Debille, J., Peeters, B., Giclais, S., Lubrina, P., Boeswald, M., and Govers, Y., “Advanced Systems and Services for Ground Vibration Testing- Application for Research Test on an Airbus A340-600 Aircraft”, The 15th International Forum on Aeroelasticity and Structgural Dynamics, Paris, France, 2011.
[16] Salehi, M. and Ziaei-rad, S., “Ground Vibration Test (GVT) and Correlation Analysis of an Aircraft Structure Model”, Iranian Journal of Science and Technology, Transaction B, Engineering, Vol. 18, pp. 65–80, 2007.
[17]Göge, D., Böswald, M., Füllekrug, U., and Lubrina, P., “Ground Vibration Testing of Large Aircraft — State-of-the-art and Future Perspectives”, The 25th International Modal Analysis Conference (IMAC), Orlando, USA, 2007.