Electromechanical Torsional Testing Systems Series LFM-T - WALTER + BAI
The horizontal electromechanical torsional testing machines series LFM-T are designed for the determination of mechanical properties and the effect of torque on materials, engineering parts and components.
Description
Torsion tests can be carried out on most materials, using standards specimens, to determine mechanical properties such as modulus of elasticity in shear, yield shear strength, ultimate shear strength, modulus of rupture in shear, and ductility.
Further tests can also be carried out on full-size parts (shafts, axles, etc.) and structures (beams, frames etc.) to determine their response to torsional loading.
Torsion Tests are most frequently carried out on prismatic bars or circular cross section by applying a torsional moment about the longitudinal axis. The shear stress versus shear strain curve can be determined from simultaneous measurements of the torque and angle of twist of the test specimen over a predetermined gage length.
Walter & Bai offers a full range of Electromechanical Torsional Testing machines from table-top electromechanical standard machine (LFM-T Series) to servohydraulic fatigue rated systems (LFV-T Series). Due to the modular structure of the test systems, all models can be configured and equipped with a variety of sample holders, testers, temperature control and other accessories.
The systems can be used for creep tests, rapid, cyclic or alternating loading in close loop control. To the existing channels of measurementand control other such as torque, torsion angle, and sample deformation are available.
Additional external measurement and control channels can be connected both physical and virtual ones.
• Very stiff frame at max. applied torque
• Rigid base plate with mounted ball rail guide and movable support
with torque sensor and flange for clamping fixtures
• The movable support with clamps to hold it in position
• Scale with horizontal attachment to the ball rail guide
• Adjustable end-stop with damping
• Torsion via a maintenance-free, digitally controlled, highly dynamic
AC servomotor with low backlash servo-reduction gear
• Machine with servo-reduction gear for a high mechanical resolution
and control accuracy even with slow torque speeds
• Torsion electric drive is fully covered and protected
• Weight loading device for graded weights in tensile direction and
(optionally) in compression direction
• Working space with protective device and electric switch
• High Resolution, incremental (digital) angle measuring system
• Machine is protected against overload
• Durable and hardwearing paint
• Use of high-quality components and those from reputable
manufacturers
• Eye rings for lifting machine during transportation are supplied
• Emergency stop is installed directly on the machin
• Rigid machine frame and maintenance-free AC servo motor
• Latest digital control electronics with self-identification transducer
coding and high data sampling / control loop rate
• Real-time processing of all channels, specially designed for materials
testing in static mode
• Precise torque sensor
• Powerful and user-friendly «DION» Software
• Wide range of available clamping fixtures, deformation measuring
devices, high-temperature furnaces and many others required for
testing
