Simultaneous Measurement of Torque, Axial Force and Volume Change in the Torsional Dilatometer and the Implications for Constitutive Modeling

Published

January 1, 1999

Author(s)

Carl R. Schultesiz, G B. McKenna

Abstract

The NIST Torsional Dilatometer measures simultaneously the torque, axial normal force and volume change in response to a torsional deformation. In stress-relaxation experiments with an epoxy cylinder near its glass transition, the torque and normal force decay monotonically, but the volume change associated with the torsion shows a significant non-monotonic decay at lower temperatures. The measurements are investigated with a series solution for torsion of an elastic, compressible material [Murnaghan, F. D. (1951) Finite Deformation of an Elastic Solid. Wiley, New York].

Proceedings Title

Proceedings of the Fourth International Conference on Constitutive Laws for Engineering Materials: Emperiment, Theory, Computation and Applications

Volume

270

Conference Dates

July 27-30, 1999

Conference Location

Troy, NY

Conference Title

International Conference on Constitutive Laws

Pub Type

Conferences

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Keywords

compressible material, normal force, torque, torsion, viscoelasticity, volume change

Citation

Schultesiz, C. and McKenna, G. (1999), Simultaneous Measurement of Torque, Axial Force and Volume Change in the Torsional Dilatometer and the Implications for Constitutive Modeling, Proceedings of the Fourth International Conference on Constitutive Laws for Engineering Materials: Emperiment, Theory, Computation and Applications, Troy, NY, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=851563 (Accessed October 18, 2025)