Design, Manufacture and Testing of a S Type Force Transducer

Abstract:

This paper presents the methodology of designing a transducer for the experimental measurement of forces. For this purpose, an elastic element of the shape of the letter "S" is designed and manufactured. The elastic element designed in SolidWorks is subjected to virtual testing, using the finite element method in ANSYS. After validating the results obtained considering the maximum values ​​of the stresses that appear for the nominal load, the experimental model of the transducer is realized. The central part of the elastic element behaves like a fixed double beam subjected to bend by the measuring force. On this beam are bonded strain gauge transducers, which measure the deformations produced by bending. The transducer is calibrated, in order to obtain the calibration constant, based on the obtained characteristic, that is, the dependence of the specific strain-deformation and force. The transducer thus constructed can be used in force measurement applications.

• Periodical: Applied Mechanics and Materials (Volume 896)
• Pages: 255-262
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.896.255
• Online since: February 2020
• Authors: Ionuţ Daniel Geonea*, Nicolae Dumitru, Alexandru Margine, Nicolae Craciunoiu, Cristian Copiluși
• Keywords: Experimental, Force, Measurement, Strain Gauge, Transducer

References

[1] F.G. Ciolacu, N. Crăciunoiu, A.S. Roșca, Principii și metode de măsurare, in Romanian (Principle and methods of measurements), Editura Universitaria Craiova, 2002, ISBN 973-8043-113-3, 286 pages.

[2] D.R. Kerr, Analysis, properties, and design of a Stewart-platform transducer, Journal of mechanisms, transmissions, and automation in design 111.1 (1989) 25-28.

DOI: 10.1115/1.3258965

[3] W.S. Xu, Theoretical analysis of an implantable force transducer for tendon and ligament structures, Journal of Biomechanical Engineering 114.2 (1992) 170-177.

DOI: 10.1115/1.2891368

[4] D. Platt, Novel force transducer for the measurement of tendon force in vivo, Journal of biomechanics 27.12 (1994) 1489-1493.

DOI: 10.1016/0021-9290(94)90198-8

[5] C. Yeh, S. A. Altaf, S. W. Hoag, Theory of force transducer design optimization for die wall stress measurement during tablet compaction: optimization and validation of split-web die using finite element analysis, Pharmaceutical research, 14.9 (1997) 1161-1170.

[6] R. J. Godwin, An extended octagonal ring transducer for use in tillage studies, Journal of agricultural engineering research 20.4 (1975) 347-352.

DOI: 10.1016/0021-8634(75)90071-2

[7] L. M. Ciurezu Gherghe, N. Dumitru, A. Stanimir, I. Geonea, Experimental research regarding the influence of cutting regime on the wear of drills at steel processing, Fiability and Durability/Fiabilitate și Durabilitate, 1 (2015) 118-122.

[8] E. K. J. Chadwick, A. C. Nicol, A novel force transducer for the measurement of grip force, Journal of biomechanics 34.1 (2001) 125-128.

DOI: 10.1016/s0021-9290(00)00168-8

[9] D. Tarnita, I. Geonea, A. Petcu, D.N. Tarnita, Numerical simulations and experimental human gait analysis using wearable sensors, In International Workshop on Medical and Service Robots Springer, Cham, 2016, pp.289-304.

DOI: 10.1007/978-3-319-59972-4_21

[10] I.D. Geonea, D. Tarnita, Design and evaluation of a new exoskeleton for gait rehabilitation, Mechanical Sciences, 8(2) (2017) 307-321.

DOI: 10.5194/ms-8-307-2017

[11] I.D. Geonea, D. Tarnita, Motion assistance with an exoskeleton for stair climb, In 2018 IEEE International Conference on Automation, Quality and Testing, Robotics AQTR (2018) 1-6.

DOI: 10.1109/aqtr.2018.8402731