Community Research and Development Information Service - CORDIS


The objectives of this research project are : (a) to characterise, in terms of the R curve, expressed as Crack Tip Opening Angle (CTOA), steels for large-diameter gas lines, especially new steels made using controlled rolling followed by accelerated cooling; (b) to make a laboratory check, via a spring-bar system, of the real applicability of the CTOA as the parameter for characterising the behaviour of structural steels as regards the initiation and stabilisation of ductile crack propagation; (c) to study the influence of the load application rate on CTOA values and, more generally, on the plastic deformation capacity of the steel.

Additional information

Authors: CENTRO SVILUPPO MATERIALI SPA, Centro sviluppo materiali SpA, Roma (IT)
Bibliographic Reference: EUR 12862 IT (1990) 73 pp., FS, ECU 7.50
Availability: (2)
ISBN: ISBN 92-826-1555-3
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