KUAB Falling Weight Deflectometer 70SPGE

KUAB Falling Weight Deflectometer 70SPGE is a device performing dynamic plate loading tests with falling weight as the force generator. The peak load, the rise time and the shape of the impact simulate heavy truck traffic load. This load is then transferred to the pavement surface by a flexible load distributing “loading plate” giving a uniform and reproducible stress distribution. Seismic deflection transducers are provided for accurately measuring the shape of deflection basin. This FWD also measures the test point position, air temperature, interior pavement temperature and pavement surface temperature. The readings through sensors are fed to a built-in computer with a specialized software for analysis and interpretation of data about the serviceability of the pavement for truck traffic. KUAB 70SPGE VMFWD is integrated in an Isuzu D Max Single Cabin with the vehicle forming a complete self supporting unit.

Technical Specifications

Load Pulse:
  • Peak load range: 10 - 120 kN
  • Rise time: 15 ms
  • Number of drop heights: 4
Loading Plate
  • Type : 4 segments with individual tilt and individual
  • vertical movement
  • Size: 300 mm diameter
  • Rubber under plate: 32 mm ribbed
  • Time to make one standard test: 25 s

Load Measurment:
  • Precision: ± 1% ± 10 kgf
  • Accuracy: ± 2% ± 15 kgf
Deflection Measurment
  • Range : 2 mm
  • Precision : ± 1 μm ± 1%
  • Accuracy : ± 2 μm ± 2%
  • Number of sensors : 7
  • Sensor positions: 0, 200, 300, 450, 600, 900 and 1200 mm from load center

Other Features in The System:

Available both in Trailer and Vehicle Mounted versions with 7 or 9 Sensors, Time history of load and deflections, Automatic surface IR-thermometer and air thermometer Automatic distance meter