Torsion Testing Machine
| Standard | Application | Main Result Measured |
|---|---|---|
| ASTM A938-18 | Torsion testing of wire | Number of turns to fracture |
| ASTM F543 | Metallic medical bone screws | Torsional yield strength, maximum torque, breaking angle |
| ISO 7800 | Simple torsion test for metallic wire from 0.1 mm to 14 mm | Ability to undergo plastic deformation in torsion |
| ISO 7206-8 | Hip joint prosthesis femoral stem torsion endurance | Resistance to failure under torsional cyclic loading |
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On-site or installation and hands-on training
Technical Specifications
| Parameter | Technical Specification |
|---|---|
| Equipment Type | Torsion Testing Machine |
| Test Method | Torsional loading / twisting test |
| Application | Wire, screws, fasteners, medical bone screws, metallic components, implant components, shafts, rods, and other torsion-loaded parts |
| Loading Mode | Rotational torsion loading |
| Control Mode | Torque control, angle control, speed control, or cycle control |
| Test Direction | Clockwise and counterclockwise torsion |
| Test Type | Static torsion, simple torsion, torsion to failure, specified-turn torsion, cyclic torsion, endurance torsion |
| Measured Properties | Maximum torque, torsional yield strength, breaking torque, breaking angle, number of turns to fracture, torsional stiffness, angle of twist |
| Specimen Mounting | Specimen is fixed between two grips/chucks; one end is held stationary while the other end rotates around the longitudinal axis |
| Drive System | Motorized torsion drive system |
| Torque Measurement | Torque sensor / load cell measures twisting force applied to specimen |
| Angle Measurement | Encoder measures rotation angle or number of turns |
| Test Speed | Adjustable rotational speed, selected based on test standard or material requirement |
| Test End Condition | Failure, specified number of turns, specified angle, specified time, or specified cycle count |
| Stress Type Generated | Shear stress across the specimen cross-section |
| Data Output | Torque-angle curve, torque-time curve, angle-time curve, turns to failure, maximum torque, fracture angle |
| Control Software | Computer-controlled data acquisition and reporting system |
| Safety Features | Protective guard/enclosure, emergency stop, overload protection, automatic stop at failure |
| Compatible Standards | ASTM A938, ASTM F543, ISO 7800, ISO 7206-8 |
| Suitable Materials | Metallic wire, steel wire, medical-grade metals, bone screws, implant alloys, rods, shafts, and machined components |
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