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The Relevance of the Creep Factor in the European Standards for Flanges and their Joints EN 1591 and prEN 13555
Author(s) -
Tückmantel H. J.
Publication year - 2002
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/1521-4125(20021210)25:12<1167::aid-ceat1167>3.0.co;2-x
Subject(s) - creep , gasket , materials science , compressive strength , displacement (psychology) , composite material , structural engineering , stress (linguistics) , engineering , psychology , linguistics , philosophy , psychotherapist
In EN 1591, the creep factor is defined as the quotient of the axial displacement of the gasket under load after time t = 0 and t = ∞. In EN 13555, the creep factor was first defined as the quotient of the remaining compressive stress upon the gasket after a certain time interval and the compressive stress at assembly conditions. In the meantime, the definition of the creep factor in prEN 13555 has again been altered. The present article demonstrates that the creep factor of both definitions is not suitable for describing the loss of compressive stress and load of a bolted flanged connection.