The Paton Welding Journal, 2011, №10



2011 №10 (09)

2011 №10 (11)

---

The Paton Welding Journal, 2011, #10, 36-39 pages  

INFLUENCE OF PRELIMINARY CYCLIC LOADING ON EFFECTIVENESS OF WELDED JOINT STRENGTHENING BY HIGH-FREQUENCY PEENING

V.V. KNYSH, S.A. SOLOVEJ and A.Z. KUZMENKO

E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
 
 
Abstract
The paper gives the results of studying the effectiveness of application of high-frequency mechanical peening to improve the residual fatigue life of tee welded joints on low-alloyed steels with accumulated fatigue damage. It is shown that the effectiveness of strengthening welded joints by this technology can vary in a broad range, depending on operation duration and level of applied stresses during operation.
 
 
Keywords: welded joints, fatigue, fatigue damage, highfrequency mechanical peening, cyclic fatigue life, strengthening effectiveness
 
 
Received:                ??.??.??
Published:               28.10.11
 
 
References
1. Garf, E.F., Litvinenko, A.E., Smirnov, A.Kh. (2001) Assessment of fatigue life of tubular connections subjected to ultrasonic peening treatment. The Paton Welding J., 2, 12-15.
2. Knysh, V.V., Kuzmenko, A.Z., Bojtenko, O.V. (2006) Increasing fatigue resistance of welded joints by high-frequency mechanical peening. Ibid., 1, 30-33.
3. Knysh, V.V., Kuzmenko, A.Z., Solovej, S.A. (2009) Increase of cyclic fatigue life of tee welded joints with surface cracks. Ibid., 1, 29-33.
4. Knysh, V.V., Solovej, S.A., Kuzmenko, A.Z. (2010) Improvement of cyclic fatigue life of welded joints with accumulated fatigue damage by high-frequency peening. Ibid., 10, 33-36.
5. Xiaohui, Z., Dongpo, W., Lixing, H. (2011) Analysis of the S-N curves of welded joints enhanced by ultrasonic peening treatment. Materials & Design, 32(1), 88-96.
6. Knysh, V.V., Solovej, S.A., Kuzmenko, A.Z. (2008) Accumulation of fatigue damage in tee welded joints of 09G2S steel in the initial condition and after strengthening by high frequency mechanical peening. The Paton Welding J., 10, 10-15.
7. Knysh, V.V., Valteris, I.I., Kuzmenko, A.Z. et al. (2008) Corrosion fatigue resistance of welded joints strengthened by high-frequency mechanical peening. Ibid., 4, 2-4.

---