équipement de laboratoire d'essai des matériaux

Standards EN 12697-24, 12697-26, NCHRP 9-19, 9-29, AASHTO TP97
Four Point Bending Jig has been designed to subject an asphalt specimen to four point bending with backlash free rotation and horizontal translation of all load and reaction points.

SPECIFICATIONS
Features

• Innovative “floating straight-edge” on specimen transducer eliminates errors
• Backlash free rotation and translation on all load and reaction points
• Sinusoidal or haversine controlled strain or controlled stress loading
• Controlled force, motorized specimen clamping
• Non-linear regression data fitting ensures reliable determination of phase and modulus
• Can be used with existing UTM-14P or UTM-25
• Cost effective solution for high volume testing

Dimensions and Weight
Size: 460(L) x 230(W) x 600(H) mm
Weight: 35kg
Loading Frequency: up to 60Hz
Load Capacity: up to 10kN dynamic
Specimen Size: 70 max (H) x 85 max (W) x 380 min (L) mm

TESTING MADE EASY
The specimen is laterally positioned by hand using etched lines as a visual guide for 2 specimens sizes, nominally 50 mm and 63.5 mm in width.
Vertical clamping of the specimen is achieved by servo-motor driven ball screws which are operated continuously during the test to take up the compliance of the specimen at the clamping surfaces.

SUPERIOR PERFORMANCE
The Four Point Bending Jig is designed to be used with Integrated Multi-axis Control System  (IMACS), which offers leading-edge performance, unparallel control and the ultimate in flexible data acquisition. The IMACS uses PID closed-loop control and a run time adaptive control algorithm that adjusts the command signal during the running of the test.
The test control system is computer based, using sensors on the machine for feedback (load and strain) signals.
The software automatically saves test information in binary file format, allowing data files to be generated for importing into a spreadsheet package, or review of previously-run tests through the graphics screens of the system. Binary files may also be emailed for diagnostic purposes.