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The influence of the material toughness, material strength and specimen dimensions on the load and deformation behaviour of specimens was investigated in tests carried out on pre-cracked large scale and small scale specimens in two steel qualities. Crack initiation and crack growth behaviour in relation to the dependence on the relevant test temperature were of special interest. The results have proved that the lowest service temperature which excludes failure due to brittle fracture cannot always accurately be predicted by the Sanz approach. The direct comparison of the behaviour of the specimens made of high-toughness material with a notch impact energy of 90 J in the transition area and the other of a material with a notch impact energy of 90 J in the upper shelf area shows that the specimen made of high-toughness material has higher crack initiation values and resists more to further crack propagation.

Additional information

Authors: EISELE U, Staatliche Materialprüfungsanstalt (MPA), Stuttgart (DE);SILCHER H, Staatliche Materialprüfungsanstalt (MPA), Stuttgart (DE);SCHIEDERMAIER J, Staatliche Materialprüfungsanstalt (MPA), Stuttgart (DE)
Bibliographic Reference: EUR 16026 DE (1997) 113pp., FS, ECU 20.00
Availability: Available from the (2)
ISBN: ISBN 92-828-0408-9
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