Structural health monitoring of marine structures by using inverse finite element method

Kefal, A. and Oterkus, E. (2015) Structural health monitoring of marine structures by using inverse finite element method. In: Analysis and design of marine structures. CRC Press/Balkema, pp. 341-350. ISBN 9781138027893

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    Abstract

    A new state-of-the art methodology named as inverse Finite Element Method (iFEM) is adopted to solve the inverse problem of real-time reconstruction of full-field structural displacements, strains, and stresses. iFEM has shown to be precise, robust, and fast enough to reconstruct the three dimensional displacement field of structures in real-time by utilizing surface strain measurements obtained from strain sensors embedded on the structure. The numerical implementation of the iFEM methodology is done by considering four-node inverse quadrilateral shell element. Two demonstration cases are presented including a quadrilateral plate subjected to bending force and a stiffened plate under bending loading. Finally, the effect of sensor locations, number of sensors and the discretization of the geometry are examined on solution accuracy.