The effect of toughness on the failure of high and very high strength structural steels in the elasto-plastic and fully plastic range

Informations projet

N° de convention de subvention: 7210-KE-120

Projet clôturé

Date de début 1 Juillet 1987

Date de fin 30 Juin 1990

Financé au titre de

• Medium-term guidelines (ECSC) "technical steel research", 1986-1990

Coût total

€ 585 500,00

Contribution de l’UE

€ 351 300,00

Coordonné par

Rheinisch-Westfälische Technische Hochschule Aachen (RWTH)
Germany

CORDIS fournit des liens vers les livrables publics et les publications des projets HORIZON.

Les liens vers les livrables et les publications des projets du 7e PC, ainsi que les liens vers certains types de résultats spécifiques tels que les jeux de données et les logiciels, sont récupérés dynamiquement sur OpenAIRE .

Publications

Other (1)

Investigations into the influence of the toughness on the failure behaviour of high strength steels in the elastic-plastic and fully plastic range on the basis of wide plate tests

Auteurs: LIESSEM A (Institut für Eisenhüttenkunde, Rheinisch-Westfälische Technische Hochschule, Aachen (DE)), DAHL W (Institut für Eisenhüttenkunde, Rheinisch-Westfälische Technische Hochschule, Aachen (DE))
Publié dans: EUR 13954 DE (1992) 149 pp., FS, ECU 13.75 (euroabstract 30/1114), 1992, Page(s) 149, ISBN 92-826-3689-5

Résultats exploitables

The failure behaviour of high strength steels

Within this research project 9 steels of varying strength and toughness have been investigated by different test procedures in order to examine differences in the failure behaviour of high strength steels. A major topic was the investigation concerning the influence of temperature on the deformation and failure behaviour of wide plates in the elastic plastic range and fully plastic range. It was shown that, with increasing strength, stable crack extension appears below the plastic collapse load. In addition, the influence of the amount of elastic energy which is available for the occurrence of fracture was investigated. It became clear that with decreasing stiffness the values of fracture strain declined visibly. Furthermore, safety concepts of fracture were examined with regard to their applicability to high strength steels. The statements about safety extend from gross estimations by the crack tip opening displacement (CTOD) design curve approach to exact predictions using finite element (FE) calculations.