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Development, experience and qualification of steel grades for hydropower conduits
Author(s) -
Cerjak Horst,
Enzinger Norbert,
Pudar Milan
Publication year - 2013
Publication title -
steel construction
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.443
H-Index - 8
eISSN - 1867-0539
pISSN - 1867-0520
DOI - 10.1002/stco.201310038
Subject(s) - penstock , weldability , hydropower , welding , nondestructive testing , engineering , toughness , forensic engineering , stress corrosion cracking , corrosion , structural engineering , materials science , metallurgy , mechanical engineering , medicine , electrical engineering , radiology
In this contribution the historical development of materials and applied welding procedures in the field of hydropower plant shafts and penstocks is summarized. Based on the experiences and failure cases observed in the past in combination with modern methods, a best practice solution for the qualification of materials and processes is proposed. Additionally to weldability based on strength and toughness, fracture mechanics, fatigue behaviour and stress corrosion sensitivity have to be considered. All these measures have to be validated by application of related advanced NDT processes.