Articles | Volume 6, issue 2
https://doi.org/10.5194/jsss-6-253-2017
https://doi.org/10.5194/jsss-6-253-2017
Regular research article
 | 
14 Jul 2017
Regular research article |  | 14 Jul 2017

Development of a non-contact torque transducer based on the laser speckle contrast method

Alberto Garinei and Roberto Marsili

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Cited articles

Becchetti, M., Flori, R., Marsili, R., and Rossi, G. L.: Stress and strain measurements by image correlation and Thermoelasticity, in: SEM Annual conference & Exposition on Experimental and Applied Mechanics, 1–4 June 2009, Albuquerque, New Mexico, USA, 2009a.
Becchetti, M., Flori, R., Marsili, R., and Rossi, G. L.: Measurement of stress and strain by a thermocamera, in: SEM Annual conference & Exposition on Experimental and Applied Mechanics, 1–4 June 2009, Albuquerque, New Mexico, USA, 2009b.
Becchetti, M., Flori, R., Marsili, R., and Moretti, M.: Comparison between Digital Image Correlation and Thermoelasticity for Strain Field Analysis, in: 9th International conference on Vibration measurements by laser and noncontact techniques, 22–25 June 2010, Ancona, https://doi.org/10.1063/1.3455462, 2010.
Beckmann, P. and Spizzichino, A.: The scattering of Electromagnetic Waves from Rough Surface, Artech House, Incorporated, Artech House, Norwood, Massachusetts, 1987.
Brustenga, G., Marsili, R., Moretti, M., Pirisinu, J., and Rossi, G.: Measurement on rotating mechanical component by thermoelasticity, J. Appl. Mech. Mater., 3–4, 337–342, https://doi.org/10.4028/www.scientific.net/AMM.3-4.337, 2005.
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Short summary
When a torque measurement is required, torque transducers show many drawbacks during their use: the usual limits are the need for contact and the effects on shaft line parameters. A new approach is proposed in this work: a non-contact torque meter for a machine shaft has been developed, based on a laser speckle contrast method. It carries out torque measurements evaluating the torsional displacement between two distinct sections of the shaft, through the monitoring of their roughness.