New ideas for an experimental set-up to approach pipeline fracture behaviour by Drop Weight Tear Test Idee per una nuova procedura sperimentale per prove Drop Weight Tear per la caratterizzazione di acciai per gasdotti

M. Minotti; P. Salvini

Digital Repository, Convegno IGF XXI Cassino 2011

M. Minotti, P. Salvini

Last modified: 2011-06-09

Abstract

A new experimental set-up for Drop Weight Tear Tests is proposed. Its principal characteristic is the adoption of inclined supports that drive the hinges connected to the specimen. This choice reflects the need that the specimen is subjected to a persistent stress field in the ligament, thus approaching the stress field experienced by a crack that propagates in a pipeline. This set-up requires a proper manipulation of the data that is discussed in the paper. The tests are conducted in a quasi-static mode, but the method can be applied to dynamic tests.
KEYWORDS. Propagazione della frattura, Gasdotti, Drop Weight Tear Test.

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