Biaxial and Triaxial Testing Machines

ZwickRoell offers various solutions for biaxial and triaxial materials testing. Materials testing machines with torsion drive enable fast, precise biaxial testing (tensile or compression combined with torsion) of materials or components up to 10,000 Nm. In addition to tests on artificial ball-and-socket joints and bone-replacement material, torsion tests are also performed on items such as clutch plates, steering shafts and camshafts.

ZwickRoell's product range also includes biaxial testing machines for cruciform tests from 1kN to 250kN. These have four separate drives which can be operated either in master/slave mode or controlled independently of each other via the respective testControl measurement and control electronics. Biaxial testing machines for cruciform tests are especially well-suited for components testing, for research purposes and for individual complex test sequences. 

Biaxial testing machine for two-axis tests (tensile or compression combined with torsion) or cruciform tests (also two-axis tensile test)

Static Torsion Testing

Torsion drives from 2 Nm to 2,000 Nm are available for torsion tests on materials or components. ZwickRoell supplies a variety of testing machines to cater for different requirements, including varied installation options. These torsion drives were developed as a modular system, making them suitable for retrofitting as well. A Master Test Program for multiple test axes plus a graphical sequence editor for four test axes are available in the testXpert III testing software. For pure torsion tests there are the TorsionLine testing machines with horizontal testing axis and optional weight loading unit.

Biaxial Tensile Test (Cruciform Test)

A unique feature of materials testing is the biaxial tensile test, or two-axis tensile test, which is used to determine the deformation properties of the material. It is primarily employed in research and development, as it allows defined stress values to be set and investigated at the intersection point of the specimen.
Testing machine 1 kN for biaxial tensile tests (cruciform tests)

Triaxial Testing of Biomaterials

For multiaxial testing of biological tissues, ZwickRoell offers triaxial low-load testing machines with maximum test loads of up to 20 N. These testing machines enable specimens to be loaded simultaneously along three axes that are perpendicular to each another. A distinction is made between testing machines for triaxial shear testing and testing machines for strain, torsion, and inflation testing.
Triaxial shear testing machine

Biaxial Testing Machines are Available from ZwickRoell in Both Standardized and Customized Versions

Interesting Customer Projects Using Triaxial and Biaxial Testing Machines