Problems and Solution Strategies in Reliability Updating

[+] Author and Article Information
R. Sindel, R. Rackwitz

Institut für Tragwerksbau, Technische Universität München, Arcisstrasse 21, D-80290 München, Germany

J. Offshore Mech. Arct. Eng 120(2), 109-114 (May 01, 1998) (6 pages) doi:10.1115/1.2829524 History: Received September 01, 1996; Revised January 20, 1998; Online December 17, 2007


Reliability updating by inspections has become widely used in the offshore industry, especially within the framework of FORM/SORM. However, certain algorithmic difficulties can occur. This is especially true for reliability updating in the presence of structural fatigue (crack propagation and instability), but the problem appears to exist whenever conditional probabilities are to be calculated. New and widely successful strategies to select appropriate starting points for the β-point search as well as strategies to avoid physically or mathematically inadmissible domains are proposed. They are illustrated at a typical example in which it is also demonstrated that the simpler crude FORM approaches are inadequate.

Copyright © 1998 by The American Society of Mechanical Engineers
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