Residual stress measurements configuration for polymeric & composite materials.
Low speed electric motor allows measurements on polymers avoiding local heating in the material.
For further details check the scientific paper dedicated on this topic:
Valentini, E., Bertelli, L., and Benincasa, A., “Improvements in the Hole-Drilling Test Method for Determining Residual Stresses in Polymeric Materials,” Materials Performance and Characterization, Vol. 7, No. 4, 2018, pp. 446-464, https://doi.org/10.1520/MPC20170123.ISSN 2379-1365.