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Probability and sensitivity analysis of strain measurements in FRP
Author(s) -
Strauss Alfred,
Pascale Giovanni,
Bonfiglioli Barbara,
Bergmeister Konrad,
Muro Paola Di
Publication year - 2004
Publication title -
structural control and health monitoring
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.587
H-Index - 62
eISSN - 1545-2263
pISSN - 1545-2255
DOI - 10.1002/stc.32
Subject(s) - fibre reinforced plastic , sensitivity (control systems) , glue , structural engineering , strain gauge , probabilistic logic , field (mathematics) , gauge (firearms) , strain (injury) , engineering , computer science , mathematics , statistics , materials science , mechanical engineering , electronic engineering , medicine , pure mathematics , metallurgy
Monitoring is an important issue for FRP strengthening systems in order to control their health state. Strain gauges are often used for this aim, but the measures to be utilised can be affected by various factors. In this paper the influence of various factors is taken into account, such as the characteristics of resin coating, the type of glue and the gauge length. The theoretical approach developed in previous work performed on a deterministic basis is extended here to the probabilistic field. The objective is to make a sensitivity analysis of the basic variables which can cause errors in strain measurements. Additionally, the effect of the deviation of the direction of the gauges from the longitudinal direction of the FRP sheets is considered and the existing approach is extended to take this into account. Copyright © 2004 John Wiley & Sons, Ltd.

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