Abstract
The prediction of the short crack behavior at the critical parts of gas turbine engines under cycle load is one of the major challenges in the aerospace industry. The total service life of the critical parts can be significantly affected by short crack growth regime. The short crack demonstrates different behavior during fatigue growth in comparison with long crack. Therefore, the prediction of the crack propagation life based on standard linear fracture mechanics methods can lead to non-conservative results in the life assessment of critical parts. The size of the physically short cracks is comparable with the material grain size for nickel and titanium alloys, which are widely used in aerospace industry. Also plastic zone near the crack tip has similar or bigger size in comparison with short crack size in high stressed features of compressor and turbine discs. Both parameters are key factors which determine the short crack arrest and propagation mechanism. The theoretical concept of the fatigue short crack growth and arrest phenomena, which is suggested in current work, is based on taking into account the material microstructural parameters and material plastic behavior. The suggested theoretical model requires a minimum number of material parameters which usually well-known i.e. yield stress, grain size, endurance limit and Paris law crack propagation constants. This proposed analytical method has been validated based on experimental data for selected applications.
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References
Suresch, S., Ritchie, R.O.: Propagation of short fatigue cracks. Int. Met. Rev. 29(6), 445–475 (1984)
Miller, K.J.: The three thresholds for fatigue crack propagation. In: STP, 1296, pp. 267–286. ASTM, Philadelphia (1997)
Nosikov, A.I., Semenov, A.S., Melnikov, B.E., Rayimberdiyev, T.P.: Prediction of short crack propagation on the base of non-local fracture criterion. Mater. Phys. Mech. 31(1/2), 44–47 (2017)
Kocanda, D., Kocanda, S.: Fatigue short cracks. Experimental analysis and analytical description. In: Initiation and behaviour of small cracks under cyclic loading, German-Polish Summer School, 13–16 June 2000 in Dresden, Lectures (2000)
Sähn, S., Pham, V.B.: The d*-concept – a model for description and prognosis of strength phenomena of highly inhomogeneous straining at cyclic loading. In: Proceedings of 6th International Fatigue Congress, Berlin, Germany, vol. 1, pp. 129–134 (1996)
Wieghardt, K.: Über das Spalten Zeressen elastischer Körper. Zeitscher. Math. Phys. 55(1/2), 60–103 (1907)
Semenov, A.S., Nosikov, A.I., Melnikov, B.E.: Description of fatigue crack growth on the base of the non-local continuum damage concept. Scientific and technical sheets of St.-Petersburg State Polytechnical University, vol. 29, pp. 179–189 (2002). (in Russian)
Dugdale, D.S.: Yielding of the steel sheets containing slits. Mech. Phys. Solids 8, 100–105 (1960)
Special metals: Inconel alloy 718. http://www.specialmetals.com/
Kiatagawa, H., Takahashi, S.: Applicability of fracture mechanics to very small cracks or the cracks in early stage. In: Proceedings of Second International Conference on Mechanical Behaviour of Materials, pp. 627–658. American Society of Metals, Metals Park (1976)
Tanaka, K., Nakai, Y., Yamashita, M.: Fatigue growth threshold of small cracks. Int. J. Fract. 17, 519–552 (1981)
Ashbaugh, N.E., Nicholas, T.: Threshold crack growth behaviour of nickel-base superalloy at elevated temperature. In: Wei, R.P., Gangloff, R.P. (eds.) Fracture Mechanics: Perspectives and Directions (20th Symposium), ASTM, STP, 1020, pp. 628–638. American Society for Testing and Materials, Philadelphia (1989)
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Nosikov, A. (2019). Modelling of Short Crack Arrest and Fatigue Propagation Using Non-local Fracture Criteria. In: Abdel Wahab, M. (eds) Proceedings of the 7th International Conference on Fracture Fatigue and Wear. FFW 2018. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-13-0411-8_43
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