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Abstract

The subject of this research was fatigue occurring in welded joints, the aim being to assess the advantages of using high-strength E 460 steel in conjunction with post-weld improvement treatments. European research projects have thrown more light on the formation and growth of cracks in structures: formation occurs rapidly at a "hot spot". A macroscopic fissure is generally detected in the first 15% of the life of the weld, even if it is very durable, and after a period of acceleration in the first stages of propagation, the crack develops across the inner wall of the damaged joint. The period of formation is particularly short, so ways have to be found to increase it if greater durability is to be achieved. Most cracks start at the toe of the weld, an area containing faults and residual tensile stresses. Thus, the best way of improving fatigue behaviour of welded joints is adequate treatment of the weld toe area.

Additional information

Authors: BIGNONNET A, Institut de Recherches de la Sidérurgie Française, Saint-Germain-en-Laye (FR);LIEURADE H P, Institut de Recherches de la Sidérurgie Française, Saint-Germain-en-Laye (FR);VALLET C, Institut de Recherches de la Sidérurgie Française, Saint-Germain-en-Laye (FR)
Bibliographic Reference: EUR 13398 FR (1992) 96 pp., FS, ECU 8.75
Availability: (2)
ISBN: ISBN 92-826-3400-0
Record Number: 199210040 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: fr
Available languages: fr