Communications - Scientific Letters of the University of Zilina 2006, 8(4):10-14 | DOI: 10.26552/com.C.2006.4.10-14

Quantitative Fractography - Well Spring of Intimate Knowledge in Fatigue Crack Growth History

Jiri Kunz1, Jan Siegl1, Ivan Nedbal1
1 Department of Materials, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Czech Republic

Quantitative fractography of fatigued structure parts can offer very useful and valuable information on the fatigue process. One of main contribution of this experimental method is a detailed description of fatigue crack growth in time and in space. The fractographic reconstitution of fatigue process history is conditioned by the existence and detectability of a fractographic feature characteristics of which is correlated with the fatigue crack growth rate. In the paper presented, three various fractographic features are used for the fractographic reconstitution - striations (in the case of constant amplitude loading), beach marks (for simple program loading) and special inserted fracture marks (for complex program loading). All three methods described are illustrated on case studies, all from the area of testing and development of aircraft structure parts.

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Published: December 31, 2006  Show citation

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Kunz, J., Siegl, J., & Nedbal, I. (2006). Quantitative Fractography - Well Spring of Intimate Knowledge in Fatigue Crack Growth History. Communications - Scientific Letters of the University of Zilina, 8(4), 10-14. doi: 10.26552/com.C.2006.4.10-14
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    References

    1. PARRINGTON, R. J.: Fractography of Metals and Plastics. Practical Failure Analysis, 2, 2002, No.5, pp. 16-46. Go to original source...
    2. HULL, D.: Fractography. Observing, Measuring and Interpreting Fracture Surface Topography. Cambridge University Press 1999, 366 p.
    3. NEDBAL, I., SIEGL, J., KUNZ, J.: Fractographic Study of Fatigue Crack Kinetics in Bodies and Structures. In: Advances in Fracture Research 84 (Proc. ICF 6, New Delhi). Eds. S.R. Valluri et al. Vol. III. Oxford, Pergamon Press 1984, pp. 2033-2040. Go to original source...
    4. NEDBAL, I., KUNZ, J., SIEGL, J.: Quantitative Fractography - Possibilities and Applications in Aircraft Research. In: Basic Mechanisms in Fatigue of Materials (Proc. Int. Colloq., Brno). Materials Science Monographs, 46. Eds. P. Lukáš, and J. Polák. Amsterdam, Elsevier 1988, pp. 393-403.
    5. NEDBAL, I., SIEGL, J., KUNZ, J.: Relation between Striation Spacing and Fatigue Crack Growth Rate in Al-Alloy Sheets. In: Advances in Fracture Research (Proc. ICF 7, Houston). Eds. K. Salama et al. Vol.5. Oxford, Pergamon Press 1989, pp.3483-3491.
    6. NEDBAL, I., KUNZ, J., SIEGL, J.: Microfractographic Aspects of Fatigue Crack Growth in 7010 Aluminium Alloy. In: Fractography '97 (Proc. Int. Conf., Stará Lesná). Ed. L. Parilák. Košice, IMR SAS 1997, pp. 264-270.
    7. AUGUSTIN, P., PÍŠTĚK, A.: Experimental Data Determination for the Damage Tolerance Analysis of the Wing Spar with Cracked Web. In: Proc. EAN 2000 (38th Int. Conf. Experimental Stress Analysis, Třešť), 2000, pp. 9-14.
    8. KUNZ, J., SIEGL, J., NEDBAL, I., AUGUSTIN, P., PÍŠTĚK, A.: Application of Quantitative Microfractography in Damage-Tolerance and Fatigue Evaluation of Wing Spar. In: Proc. 24th International Congress of the Aeronautical Sciences (ICAS 2004, Yokohama). Ed. I. Grant. Edinburgh, Optimage Ltd., 2004, 10 p., CD-Rom.
    9. SIEGL, J., SCHIJVE, J., PADMADINATA, U. H.: Comparison of Fractographic Observation Results and Predictions for MiniTWIST Flight Simulation Loading. Int. J. Fatigue, 13, 1991, No.2, pp. 139-147. Go to original source...
    10. KUNZ, J., NEDBAL, I., SIEGL, J.: Application of Fractography in Full-Scale Tests of Aircraft Structure Parts. In: Fracture Behaviour and Design of Materials and Structures (Proc. ECF 8, Torino). Ed. D. Firrao. Vol. III. Cradley Heath, EMAS 1990, pp. 1662-1669.
    11. HRKAL, K., RŮŽIČKA, M.: Life test of wing of aeroplane L 410 UVP - II. (in Czech), [Technical report VZLÚ Z-2694/82.] Praha, VZLÚ 1982, 237 p.
    12. HRKAL, K., RŮŽIČKA, M.: Life test of wing of aeroplane L 410 UVP - II. Annex 1. (in Czech) [Technical report VZLÚ Z-2694/82.] Praha, VZLÚ 1983, 78 s.
    13. NEDBAL, I., KUNZ, J., SIEGL, J.: Some Remarks on Fatigue Fracture Marking. In: Fatigue '99 (Beijing). Vol. 4/4. Eds. X.R. Wu, and Z.G. Wang. Beijing - Cradley Heath, HEP - EMAS 1999, pp. 2373-2378.

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