Community Research and Development Information Service - CORDIS


This research project has been directed towards developing quantitative materials and design practice requirements for structures fabricated with advanced high-strength steels.
Manufacturers of advanced high-strength steels and welding consumables, engineering and fabrication companies and experienced end-users have jointly been cooperating with research institutes to select the most attractive steel qualities and define the requirements for the welding of the new class of steels. The major research tasks have been:
-Selection of steels and welding consumables.
-Weld thermal simulation testing.
-Mechanical and fracture toughness testing.
-Wide plate and structural element testing.
-Design practice for high-strength steels.
-Measurement of residual stresses.
-FEM calculations.
-Statistical evaluation.
-Specification of acceptance criteria and level of safety.

The present failure assessment procedures do not take the effect of geometry and material mismatch fully into account, and a new procedure, called J-Q-M, has been developed. The procedure has been verified by fracture mechanics and wide plate testing, and used to derive quantitative requirements with respect to fracture toughness and strength mismatch.

The 500 class of steel is compared to the previous 350 class, and recommendations are given on how to deal with both brittle fracture and plastic collapse.tic collapse.

Additional information

Authors: No author provided, CSM, Rome (IT)
Bibliographic Reference: EUR 19990 EN (2001), pp. 224. Euro: 34.00
Availability: Available from EUR-OP sales agent URL:
ISBN: ISBN 92-894-1586-X
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