Centre of mass determination based on an optical weighing machine using fiber Bragg gratings

Rui Oliveira; Paulo Roriz; Manuel B. Marques; Orlando Frazão

doi:10.1117/12.2195151

28 September 2015 Centre of mass determination based on an optical weighing machine using fiber Bragg gratings

Rui Oliveira, Paulo Roriz, Manuel B. Marques, Orlando Frazão

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96347H (2015) https://doi.org/10.1117/12.2195151
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

The purpose of the present work was to construct a weighing machine based on fiber Bragg gratings (FBGs) for the location of the 2D coordinates of the center of gravity (COG) of objects with complex geometry and density distribution. The apparatus consisted of a rigid equilateral triangular platform mounted on three supports at its vertices, two of them having cantilevers instrumented with FBGs. As an example, two femur bone models, one with and one without a hip stem prosthesis, are used to discuss the changing of the COM caused by the implementation of the prosthesis.

Citation Download Citation

Rui Oliveira, Paulo Roriz, Manuel B. Marques, and Orlando Frazão "Centre of mass determination based on an optical weighing machine using fiber Bragg gratings ", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96347H (28 September 2015); https://doi.org/10.1117/12.2195151

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