Vol.9, No1, 2009, pp. 39-50
 UDC 620.17:62-112.81

CHRONOLOGY OF LOST STRUCTURAL INTEGRITY INITIATED FROM MANUFACTURING DEFECTS IN WELDED STRUCTURES

Stojan Sedmak 1

Vencislav Grabulov, Dejan Momčilović 2

1 Faculty of Technology and Metallurgy, University of Belgrade

2 Institute for Materials Testing (IMS), Belgrade

Abstract

At different time periods, loss in structural integrity occurs from initiation of manufacture defects in the welded joint. Failure mechanisms are different and present a new experience always requiring new knowledge and approach in solving the problem. Extended analyses of all failures considered here and derived conclusions are yet not sufficient in completely avoiding manufacture imperfections and assuring in-service integrity of welded structures. Directives, standards and recommendations for manufacturing welded structures significantly contribute in problem solving which they cannot completely eliminate due to the complexity and numerous influencing factors.

Keywords: structural steel, welded joint, structural integrity, defect, impact toughness, nil-ductility transition temperature, fracture mechanics, fatigue, stress corrosion, brittle fracture

full article (1.72 MB)