HUALONG WNJ Series Computer Controlled Torsion Testing Machine, or Twist Testing Machine are used to determine the torsional properties of various components – from fasteners to biomedical devices, torsion testers are ideal for simulating real life service conditions and checking product quality.  Our torsion testing line includes models for standard torsion testing.
Hualong offers a full range of torsion testing machines in capacities from 100 to 30,000 N.m. Higher capacity and other longer length models are available upon request.
These uniquely superior torsion testers provide loading and weighing capabilities in both directions of rotation.
Conveniently determine not only the ultimate torque of a specimen, but also how that specimen behaves under conditions of continuous or intermittent torque loading in both directions.
TorsionSystemV2.0allows complete machine control along with capture and analysis of the resultant torsional test data, showing the material behavior throughout the test.

Application range
ASTM E143 Standard Test Method for Shear Modulus at Room Temperature. 
ASTM D 5448/D 5448M: Standard Test Method for In-plane Shear Properties of Hoop Wound Polymer Matrix Composite Cylinders1.
ASTM F543, ISO 6475: implants for surgery-Metal bone screws with asymmetrical thread and spherical under-surface-Mechanical requirements and test methods.

Features
1. Torsion fixtures capable of holding a wide variety of materials, products, and components. fixtures can be customized for special applications
2. Adjustable crosshead locking system allows crosshead to be free-floating or fixed during testing.
3. Software system: Software package under Windows platform of English version with straightforward interface.
4. Dynamic display of data: The test data during the test process (such as: torque, twist angle, stroke and so on.) will be real time displayed.
5. Ability to recall, replot , and rescale curves. 
6. User configurable testing method: specimen information, controlling methods and measuring method can be configured saved according to different materials for future needs. 
7. User configurable report: Ms. EXCEL report formats can be freely tailored to different report template.
8. Multiple control modes: It has stroke control, torque control, twist angle control, stress control, and shear strain control and so on.
9. Multiple statistics function: Average value, standard deviation, coefficient of variation, Max. value, Min. value, and median value and so on.
10. User can edit and define the test results on curve if the some data seem to be uncertainly.