The Paton Welding Journal, 2005, №01

2005 №01 (05)

2005 №01 (07)

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The Paton Welding Journal, 2005, #1, 22-25 pages

Improvement of fatigue fracture resistance of sheet structures by the method of local pulse action

B.I. Palamarchuk, N.A. Pashchin, A.N. Manchenko

E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
The paper gives the results of studying pulsed explosion treatment of flat samples of D16 alloy to prevent initiation and propagation of fatigue cracks. Treatment is based on a practically instantaneous generation of configuration fields of residual compression stresses, that prevents heating of the treated metal. Special schematics of pulsed treatment were developed to generate fields of a specific configuration.
Keywords: shock-wave treatment, sheet aluminium, fatigue crack, spiral schematics, stressed state, compressive residual stresses, barrier zones, crack propagation

References

1. Knysh, V.V. (2003) Determination of cyclic service life of structure elements in retardation of fatigue cracks. Avtomatich. Svarka, 9/10, 73–75.
2. (1992) Improvement of welded metal structures. Ed. by M.M. Zherbin. Kiev: Naukova Dumka.
3. Lobanov, L.M., Pivtorak, V.A., Krotenko, P.D. et al. (2003) Determination of residual stresses using the method of holographic interferometry based on measurement of plane displacements. In: Abstr. of Int. Conf, on Current Problems in Welding and Life of Structures, Nov. 24–27, 2003. Kiev: PWI.
4. Palamarchuk, B.I., Pashchin, N.A., Manchenko, A.N. (2003) Improvement in fatigue strength of aluminium alloy thin-sheet structures using the method of a local pulsed action of explosion energy. Ibid.
5. Dobrolyubov, A.I. (1999) Travelling waves of deformation. Moscow: Nauka i Tekhnika.
6. (2002) Methods of control and investigation of light alloys. Refer. book. Moscow: Metallurgiya.

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Suggested Citation

B.I. Palamarchuk, N.A. Pashchin, A.N. Manchenko (2005) Improvement of fatigue fracture resistance of sheet structures by the method of local pulse action. The Paton Welding J., 01, 22-25.

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