Evaluation of Fatigue Strength of Welded Joints by Local Strain Measurements at Weld Toe


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The fatigue strength of real welded structures neither can be covered by formulae or theoretical arguments, nor simply deducted by studying a complex assembly through its elementary components because of the many interactions among different factors governing the phenomenon. In view of this, the support of experimental observations and practical procedures to evaluate the stress/strain magnitude that could lead some components to unsafe working conditions should be preferred, especially in industrial applications where fast and reliable responses are strongly needed.



Key Engineering Materials (Volumes 348-349)

Edited by:

J. Alfaiate, M.H. Aliabadi, M. Guagliano and L. Susmel




C. Casavola and C. Pappalettere, "Evaluation of Fatigue Strength of Welded Joints by Local Strain Measurements at Weld Toe", Key Engineering Materials, Vols. 348-349, pp. 701-704, 2007

Online since:

September 2007




[1] Radaj D., Sonsino C.M., Fatigue assessment of welded joints by local approaches, Abington Publishers, 1998, Cambridge.

[2] Radaj D., Design and Analysis of fatigue-resistant welded structures, Abington Publishers, 1990, Cambridge.

[3] Paris P.C., Fracture mechanics and fatigue: a historical perspective, Fatigue Fract. Eng. Mater. Struct., 1998, vol. 21 (5), 535-540.

[4] Westergaard H. M., Bearing pressure and cracks, Journal of Applied Mechanics, 1939, vol. 6, A49-53.

[5] Atzori B., Pappalettere C., Application of Numerical and Experimental Techniques for Lap Joints Fatigue Design, Proceedings of the Int. Conference. of Eng. Mater. and Struct., Sheffield, England, (1986).

[6] Verreman Y., Nie B., Early development of fatigue cracking at manual fillet welds, Fatigue Fract. Eng. Mater. Struct., 1996, vol. 19 (6), 669-681.

DOI: 10.1111/j.1460-2695.1996.tb01312.x

[7] Lazzarin P., Livieri P., Notch stress intensity factors and fatigue strength of aluminium and steel welded joints, Int. J. Fatigue, 2001, vol. 23, 225-232.

DOI: 10.1016/s0142-1123(00)00086-4

[8] Qylafku G., Azari Z., Kadi N., Gjonaj M., Pluvinage G., Application of a new model proposal for fatigue life prediction on notches and key-seats, Int. J. Fatigue, 2001, Vol. 21, 753-760.

DOI: 10.1016/s0142-1123(99)00046-8

[9] Partanen T., Niemi E., Hot spot approach to fatigue strength analysis of welded components: fatigue tests data for still plate thickness up to 10 mm, Fatigue Fracture Eng. Mat. Struct, 1996, vol. 19 (6), 709-722.

DOI: 10.1111/j.1460-2695.1996.tb01316.x

[10] Haibach, E., Die Schwingfestigkeit von Schweibverbindungen aus der Sicht einer örtlichen Beanspruchungsmessung, LBF - Bericht no. FB-77, Lab. f. Betriebsfestigkt, Darmstadt, 1968B.

[11] Atzori B., Blasi G., Pappalettere C., Evaluation of Fatigue Strength of Welded Structures by Local Strain Measurements, Experimental Mechanics, 1985, Vol. 25 (2), 129-139.

DOI: 10.1007/bf02328802

[12] Dattoma V., Pappalettere C., Local Strain for Fatigue Strength of Welded Structures, J. of Strain Analysis, 2001, vol. 36 (6), 605-610.

DOI: 10.1243/0309324011514746

[13] Casavola C, Nobile R, Pappalettere C. A local strain method for the evaluation of welded joints fatigue resistance: the case of thin main-plates thickness - Fatigue & Fracture of Engineering Materials & Structures, 28, pp.759-767, (2005).

DOI: 10.1111/j.1460-2695.2005.00909.x

[14] C. Casavola, C. Pappalettere - Industrial application of a new local strain method for fatigue strength evaluation of welded structures - ICEM12 International Conference on Experimental Mechanics, Bari (Italy), August (2004).

[15] C. Casavola, C. Pappalettere - Application of WEL. FA. RE method on aluminium alloy welded joints -2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics, Portland (USA), June 7-9, (2005).

[16] Dattoma V., Nobile R., Panella F. W., Some considerations on the local strain amplitude used in the WELFARE method as a design parameter against fatigue, Proceedings of the International Conference New Trends in Fatigue and Fracture II, 2003, Hammamet.

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