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Abstract The most convenient method of measuring the shear modulus is via a torsion test (see Stress and Strain). The usual torsion test involves the use of a solid cylindrical specimen clamped rigidly at one end with a torque applied to the other end. This causes twisting of the sample as illustrated in figure 1 and results in pure shear of the sample. A convenient method of applying the torque is to use equal weights and a pulley system to provide the forces F illustrated in the figure. The same equipment can be used to study torsional creep as well as evaluate the shear stress-shear strain curve. Since the stresses at the clamped ends of the specimen will differ from those in the bulk a useful ‘rule of thumb’ is to make the specimen with a length of at least ten times its diameter.
Abstract The most convenient method of measuring the shear modulus is via a torsion test (see Stress and Strain). The usual torsion test involves the use of a solid cylindrical specimen clamped rigidly at one end with a torque applied to the other end. This causes twisting of the sample as illustrated in figure 1 and results in pure shear of the sample. A convenient method of applying the torque is to use equal weights and a pulley system to provide the forces F illustrated in the figure. The same equipment can be used to study torsional creep as well as evaluate the shear stress-shear strain curve. Since the stresses at the clamped ends of the specimen will differ from those in the bulk a useful ‘rule of thumb’ is to make the specimen with a length of at least ten times its diameter.
Torsion and Bend Tests
Swallowe, G. M. (author)
1999-01-01
5 pages
Article/Chapter (Book)
Electronic Resource
English
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