Fig. 1 Sensor Pod
Fig. 2 Fatigue Prediction Process
Fig. 3 Finite Element Model of Sensor Pod
Fig. 4 Static Analysis of the Sensor Pod
Fig. 5 Jet Aircraft Vibration Exposure
Fig. 6 Frequency Response Analysis
Fig. 7 Dirlik Method vs Steinberg Method
Fig. 8 Fatigue Life Comparison(Steinberg Method)
Fig. 9 Fatigue Stress Comparison of Adapter Structure
Table 1 Aircraft Loads
Table 2 Material Properties
References
- Fedral Aviation Regulation Part 25, Airworthiness Standards, Transport Category Airplanes, FAA, 1968.
- MIL-STD-1530A, Aircraft Structural Integrity Program, Airplane Requirments, 11 Dec. 1975.
- MIL-STD-810G, Environmental Engineering Considerations and Laboratory Tests, Department of Defense Test Method Standard, 31 Oct. 2008.
- NATO AECTP 400, Mechanical Environmental Tests, NATO AECTP 400, Ed 3, Jan. 2006
- M. Matsuishi and T. Endo, "Fatigue of metals subjected to varying stress," Japan society of mechanical engineers, 1968.
- A. Palmgren, "Durability of Ball Bearings," VDIZeitschrift, vol. 68, no. 14, pp. 339-341, 1924
- M. A. Miner, "Cumulative Damage in Fatigue," Journal of Applied Mechaic, vol. 12, pp. A159-A164, 1945 https://doi.org/10.1115/1.4009458
- H. Andrew and K. Frederic, "Rainflow cycle counting and acoustic fatigue analysis techniques for random loading," 10 International Conference RASD, Southampton, July 2010.
- M. Mrsnik, J. Slavic and M. Boltezar, "Frequency-domain methods for a vibration-fatigue-life estimation - Application to real data," International Journal of Fatigue, vol. 47, pp. 8-17, 2013. https://doi.org/10.1016/j.ijfatigue.2012.07.005
- H. S. Jung, K. S. Kim, J. S. Kim and S. W. Lee, "Fatigue Life Evaluation in Frequency Domain of aircraft Equipment Exposed to Random Vibration," Journal of The Korean Society for Aeronautical and Space Sciences, vol. 45, no. 8, pp. 627-628, 2017 https://doi.org/10.5139/JKSAS.2017.45.8.627
- A. Halfpenny, "Accelerated Vibration Testing Based on Fatiue Damage Spectra," nCode International, 230 Woodbourn Road, Sheffield S9 3LQ, UK
- NRTO, Aging Aircraft Fleets: Structural and Other Subsystem Aspects, 2000
- S. O. Rice, "Mathematical Analysis of Random Noise," Selected Papers on Noise and Stochastic Processes, Dover, New York, 1954.
- D. E. Newland, An Introduction to Random Vibrations, Spectral & Wavelet Analysis. Longman Scientific & Technical, 1993.
- K. Shin and J. K. Hammond, Fundamentals of signal processing for sound and vibration engineers. John Willey & Sons, Ltd, 2008.
- John W. Miles, "On Structural Fatigue Under Random Loading", Journal of the Aeronautical Sciences, vol. 21, no. 11, pp. 753-762, 1954 https://doi.org/10.2514/8.3199
- D. S. Steinberg, "Vibration Analysis for Electronic Equipment," John Wiley & Sons, 3rd edition, USA, 2000.
- T. Dirlik, "Application of computers in Fatigue Analysis", Ph.D. Thesis, University of Warwick, 1985.
- J. Goodman, Mechanics applied to engineering, Longman, Green & Co, 1954.
- MIL-HDBK-5J, Metallic materials and elements for aerospace vehicle structures, Department of Defense handbook, USA, 2003.