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Experimental Techniques

, Volume 43, Issue 5, pp 599–611 | Cite as

Strain Gauges Based 3D Shape Monitoring of Beam Structures Using Finite Width Gauge Model

  • P.-L. SchaeferEmail author
  • G. Barrier
  • G. Chagnon
  • T. Alonso
  • A. Moreau-Gaudry
Article
  • 62 Downloads

Abstract

This paper presents a new approach validated experimentally to reconstruct with strain gauges the deformed shape of a straight beam with circular cross section. It is based on a novel beam-specific strain gauge model that improves the strain measurement by taking into account the width of the gauges. These improved strain measurements are used by a 3D finite strain large displacement beam shape reconstruction method to recover the deformed shape iteratively. The whole reconstruction approach has been validated experimentally with 3D deformations of a beam instrumented with strain gauges. Results show that the strain gauge model developed improves reconstruction accuracy and that beam reconstruction can be achieved effectively.

Keywords

Beam monitoring 3D reconstruction Shape reconstruction Strain sensor Strain measurement 

Notes

Acknowledgment

This work is part of the project GAME-D, financed by the French National Agency for Research (ref: ANR-12-TECS-0019) and supported by Laboratory of Excellence CAMI (ref: ANR-11-LABX-0004-01).

The authors would like to thank Cecilia Hughes for English corrections and P. A. Barraud for providing valuable advice concerning electronic instrumentation.

Compliance with Ethical Standards

Conflict of interests

On behalf of all authors, the corresponding author states that there is no conflict of interest.

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Copyright information

© The Society for Experimental Mechanics, Inc 2019

Authors and Affiliations

  1. 1.TIMC-IMAG, Université Grenoble Alpes, CNRS, CHU Grenoble Alpes, Institute of Engineering Université Grenoble AlpesGrenobleFrance

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