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

A. Kefal, E. Oterkus

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

11 Citations (Scopus)

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.

LanguageEnglish
Title of host publicationAnalysis and design of marine structures
Subtitle of host publicationproceedings of the 5th International Conference on Marine Structures (MARSTRUCT 2015), Southampton, UK, 25-27 March 2015
EditorsC. Guedes Soares, R A Shenoi
Pages341-350
Number of pages10
Publication statusPublished - 11 Mar 2015
Event5th International Conference on Marine Structures, MARSTRUCT 2015 - Southampton, United Kingdom
Duration: 25 Mar 201527 Mar 2015

Conference

Conference5th International Conference on Marine Structures, MARSTRUCT 2015
CountryUnited Kingdom
CitySouthampton
Period25/03/1527/03/15

Fingerprint

Ocean structures
Structural health monitoring
Finite element method
Sensors
Strain measurement
Surface measurement
Inverse problems
Demonstrations
Geometry

Keywords

  • marine structures
  • inverse finite element method
  • structural health monitoring

Cite this

Kefal, A., & Oterkus, E. (2015). Structural health monitoring of marine structures by using inverse finite element method. In C. Guedes Soares, & R. A. Shenoi (Eds.), Analysis and design of marine structures: proceedings of the 5th International Conference on Marine Structures (MARSTRUCT 2015), Southampton, UK, 25-27 March 2015 (pp. 341-350)
Kefal, A. ; Oterkus, E. / Structural health monitoring of marine structures by using inverse finite element method. Analysis and design of marine structures: proceedings of the 5th International Conference on Marine Structures (MARSTRUCT 2015), Southampton, UK, 25-27 March 2015. editor / C. Guedes Soares ; R A Shenoi. 2015. pp. 341-350
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Kefal, A & Oterkus, E 2015, Structural health monitoring of marine structures by using inverse finite element method. in C Guedes Soares & RA Shenoi (eds), Analysis and design of marine structures: proceedings of the 5th International Conference on Marine Structures (MARSTRUCT 2015), Southampton, UK, 25-27 March 2015. pp. 341-350, 5th International Conference on Marine Structures, MARSTRUCT 2015, Southampton, United Kingdom, 25/03/15.

Structural health monitoring of marine structures by using inverse finite element method. / Kefal, A.; Oterkus, E.

Analysis and design of marine structures: proceedings of the 5th International Conference on Marine Structures (MARSTRUCT 2015), Southampton, UK, 25-27 March 2015. ed. / C. Guedes Soares; R A Shenoi. 2015. p. 341-350.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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AB - 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.

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Kefal A, Oterkus E. Structural health monitoring of marine structures by using inverse finite element method. In Guedes Soares C, Shenoi RA, editors, Analysis and design of marine structures: proceedings of the 5th International Conference on Marine Structures (MARSTRUCT 2015), Southampton, UK, 25-27 March 2015. 2015. p. 341-350