torsion test

In the latter case the specimen is of near perfect geometry for a torsion test.

End effects and errors due to misalignment are very important in torsion testing.

Later modifications have allowed for tensile, compression, and torsion testing.

This makes the determination of shear modulus by a torsion test a difficult task and it requires careful experimentation.

As with tensile and bend testing, torsion testing may be done under various stress or displacement programs.

One of the commonest methods used in materials science for the determination of shear moduli is the torsion test.

A common technique for torsion tests is to apply a constant torque (electrically or by pulley wheels) and observe torsional creep.

Static load tests such as tensile testing, bending tests, and torsion tests help determine the maximum loads that a design can withstand without permanent deformation or failure.

The keyboard is similarly high class when in use as a keyboard, but lift it up and give it a manual "torsion test" and it feels a little too flexible.

The stress distribution in any (except thin-walled cylindrical) specimens is non-uniform so that torsion tests share with bend tests all the problems associated with non-uniform stresses and non-linear viscoelastic effects.

For isotropic elastic materials it is not difficult to show that internal pressurization allows the determination of the plane strain bulk modulus A torsion test will give a fourth elastic constant, the longitudinal shear modulus.