The answer is provided by modern testing systems from Hegewald & Peschke, which are equipped with a torsion drive and thus enable combined stress from tension, compression, and torque. In this way, complex load scenarios can be simulated in a practical manner and relevant parameters such as torsional strength, maximum torque, or torsional shear stress can be determined precisely.
Flexibility through modular torsion modules
Based on a modular design, the torsion drives can be quickly and easily installed in and removed from the universal testing machines of the inspekt series and retrofitted to existing testing machines at any time. In addition, numerous components such as specimen holders, test tools, or temperature control chambers can be integrated into the testing system. The torsion drive is conveniently controlled via the LabMaster testing software. High-resolution angle and displacement measurement as well as synchronization of the two test axes ensure maximum repeatability. Users also benefit from the systems' ease of use and ergonomic design.
How torsion testing works
In a torsion test, one end of the clamped specimen is twisted around its longitudinal axis for a certain number of revolutions, over a defined period of time, or until failure. The torsion drive controls and monitors both the torque and the speed of the rotational movement. The torque exerted on the specimen generates a characteristic stress distribution across the cross-section (shear stress). At the same time, the universal testing machine can exert an additional tensile or compressive load. Since the modules for the torsional load have their own control system, the testing machine can also be used for pure tensile, compressive, and bending tests, and the module is only used when a torsional load is required.
Wide range of applications
Torsion tests are of central importance in numerous industries. Whether in the automotive industry for drive shafts and screws, in aerospace for highly stressed structural components, or in medical technology for implants and surgical instruments—they provide crucial data on the safety and reliability of a wide range of materials and components. With the flexible testing systems from Hegewald & Peschke, the respective requirements can be precisely and practically mapped – for reliable results in research, development, and quality assurance.
Special testing machines for torsion testing
In addition to modular torsion drives for universal testing machines, Hegewald & Peschke also develops testing systems that are specially designed for torque loads. These systems are horizontally constructed and impress with their particularly high torsional stiffness and precise angular resolution. In addition, they allow an unlimited number of revolutions and feature electrical overload protection. A variable test speed range and the maintenance-free AC servo motor with backlash-free planetary gearbox also ensure maximum reliability and flexibility in everyday testing. A classic field of application for these special torsion testing machines is the torsion test on wires in accordance with DIN ISO 7800.
