Effect of the Fracture Toughness of Materials (K_c) on Fatigue Crack Propagation Rate

Abstract:

In this paper, the fracture toughness of materials, , effects on fatigue crack propagation that can be quantified using the dynamical coefficient mechanics (DCM) model. And we can not only change the material with high value, but also should take other methods into consideration to decrease the fatigue crack growth (FCG) rate when replacing material can’t obviously decrease the FCG rate, which were examined objectively by the test results from literature.

• Periodical: Advanced Materials Research (Volumes 594-597)
• Pages: 1005-1008
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.594-597.1005
• Online since: November 2012
• Authors: Li Xiong Gu, Zhong Yong Xu, Zhi Fang Liu
• Keywords: Constant Amplitude Loading, Dynamical Coefficient Mechanics Model, Fatigue Crack Propagation Rate, Fracture Toughness of Materials

References

[1] Moses, F., Schilling, C.G., and Raju, K.S.. Fatigue evaluation procedures for steel bridges. National Cooperative Highway Research Program (NCHRP) Rep. No. 299, Transportation Research Board, Washington, D.C. (1987).

[2] Li, W. and Cheung, M.M.S.. Probabilistic fatigue and fracture analysis of steel bridges. J Struct Saf, 23:245-62.(2003).

[3] Crooker, T.W., Krause, D.J.. The influence of stress ratio and stress level on fatigue crack growth rates in 140 ksi YS steel. Report of NRL Progress. Naval Research Laboratory, Washington, DC, pp.33-35.(1972).

[4] Kumar, R., Pandey, A.K.. Investigation of fatigue crack growth under constant amplitude loading. International Journal of Pressure Vessels and Piping 41(2), 179-192.(1990).

DOI: 10.1016/0308-0161(90)90040-o

[5] Kujawski, D.. A fatigue crack driving force parameter with load ratio effects. International Journal of Fatigue 23, 239-246. (2001)

DOI: 10.1016/s0142-1123(01)00158-x

[6] Dowling N.E.. Mechanical behavior of materials: engineering methods for deformation fracture and fatigue. 2nd ed. Upper Saddle River (NJ): Prentice Hall.(1999).

[7] Zhao, T., Jiang, Y.. Fatigue of 7075-T651 aluminum alloy. International Journal of Fatigue 30, 834-849.(2008).

DOI: 10.1016/j.ijfatigue.2007.07.005

[8] Zhifang Liu, Zhongyong Xu, Lixiong Gu. A novel mechanics model for fatigue crack growth under constant amplitude loading. Proceedings of the Eleventh International Symposium on Structural Engineering, v 1(2010), pp.886-890.(In Chinese)

[9] Lixiong Gu, Zhifang Liu, Zhongyong Xu. Threshold stress intensity factor () in inertial effect coefficient model. Advanced Materials Research, New and Advanced Materials, v 197-198(2011), pp.1452-1459.(In Chinese)

DOI: 10.4028/www.scientific.net/amr.197-198.1452

[10] Lixiong Gu, Zhifang Liu, Zhongyong Xu. A key parameter in a novel fatigue crack growth model. Advanced Materials Research, Advances in Structures, v 163-167 (2011), pp.3186-3192.(In Chinese)

DOI: 10.4028/www.scientific.net/amr.163-167.3186

[11] Lixiong Gu, Zhifang Liu, Zhongyong Xu. Analysis of the parameter C in inertial effect coefficient model. Advanced Materials Research, Advances in Civil Engineering and Architecture, v 243-249(2011), pp.5458-5464.(In Chinese)

DOI: 10.4028/www.scientific.net/amr.243-249.5458

[12] Paris, P.C., Erdogan, F.. A critical analysis of crack propagation laws. ASME Journal of Basic Engineering D85, 528-534.(1963).

DOI: 10.1115/1.3656902

[13] Aliaga D, Davy A, Schaff H.. A simple crack closure model for predicting fatigue crack growth under flight simulation loading. In: Newman JC, Elber W, editors. Mechanics of fatigue crack closure, ASTM STP 982. Philadelphia: American Society for Testing and Materials, pp.491-504. (1988).

DOI: 10.1520/stp27227s

[14] Donald K, Paris P.C.. An evaluation of estimation procedure on 6061-T6 and 2024-T3 aluminium alloys. In J Fatigue, 21:S47-S57. (1999).

DOI: 10.1016/s0142-1123(99)00055-9

[15] Zhang, M.. The test methods analysis of threshold stress intensity factor of fatigue crack growth. Transaction of Nan Jing Aeronautics college,10:301-306.(1992).(In Chinese)