Description

Compact and convenient, the Servo-Pneumatic Four Point Bend Apparatus Standalone features a digitally-controlled servo-pneumatic actuator that delivers highly accurate loading in both stress and strain control modes. Its beam cradle designed to subject asphalt beam specimens to four point bending with backlash free rotation and horizontal translation at all load reaction points. This new model is now designed to provide a range of precise strain measurement options - at top-center from floating beam (EN, Austroads), the neutral axis referencing the outer pivots (ASTM, AASHTO), or top-center referencing the outer pivots.

Controlling the Four Point Bend Apparatus Standalone is the Third Generation Integrated Multi-Axis Controls and Data Acquisition System (IMACS2) and UTS Neutron test application software.

The Four Point Bend Apparatus is of great benefit for your Superpave and other performance-based testing programs for measuring stiffness & fatigue properties, characterizing mixtures and as inputs into sophisticated pavement design models.

• Digital servo- pneumatic actuator provides accurate control of loading waveshape
• Includes both on-specimen and outer fixed reference point strain measurement capabilities
• Deflection can be measured at the neutral axis or at the top surface of the specimen.
• Backlash free rotation and translation on all load and reaction points
• Sinusoidal or haversine controlled stress loading
• Constant force motorized clamping with multiple preset force levels
• Non-linear regression data fitting ensures reliable determination of phase and modulus