McQueen JILS

  JILS 10-19-2010

 

Vehicle Specification 

Roy D. McQueen used a JILS HWD testing vehicle at the Round-Up.  The following outlines many of the vehicle parameters during the testing of the Round-Up pavement.  The plate is a solid plate with a radius of 6 inches.  The drop sequence followed the recommended testing load levels for a HWD vehicle with a slight change to the lowest load level.  A seating drop of 36k lbs was followed by 16k, 24k, and 36k lbs test drops.  Data from the seating drop was collected along with the test drops.  The JILS has 7 sensors measuring deflections.  1 Sensor is positioned at the center of the plate, 1 sensor is positioned 12 inches in front of the plate along the path of the vehicle, and the remaining five sensors are positioned behind the plate at 12" spacing.  It should be noted in the .fwd file that the sensor 12" in front of the plate is the last column of deflection readings.  The vehicle is operated by a driver in the truck cabin and a spotter outside the vehicle for positioning of the plate.

 

Testing 

Testing of Cycle 1 and Cycle 2 with the JILS was performed on 10-19-2010.  Instrumentation embedded within the pavement also acquired data during testing.  The JILS deflection data was collected as a single .dat file readable in Notepad.  The .dat file was converted into a .pddx file after testing using a separate conversion program.  Both file formats are available for download.