| 2000 №09 (28) | 2000 №09 (02) |
The Paton Welding Journal, 2000, #9, 2-8 pages
Modern trends toward increase in strength and life of welded structures
B.E. Paton
E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.AbstractThe set of topical problems associated with fabrication of high-efficiency welded structures, increase in their strength and reliability and extension of their life is presented. The importance of improvement of scientific approaches to design of welded joints is shown. Consideration is given to issues related to evaluation of performance of main and process pipelines and effect of plastic deformation on fracture toughness of pipe steels. Results of investigations aimed at development of methods for improvement of fatigue resistance of welded joints and fatigue crack arresting are presented. The demand for a wider application of high-strength steels is noted. Capabilities of the acoustic emission and optical holography methods in terms of using them for diagnostics of welded structures are considered.
Keywords: welded structures, design, fabrication, strength, operation, safety factor for reliability, fatigue life