Beam Flexural Fatigue System
BFFS-P Beam Flexural Fatigue System

The GCTS Beam Flexural Fatigue System (BFFS-P) is a complete, stand-alone testing system to determine the fatigue life of advanced Hot Mix Asphalt (HMA). The system includes a fiberglass environmental chamber for temperature control, a pneumatic loading fixture, and a servo-controller and data acquisition system with a battery backup system to ensure your test will continue during a power outage. 


The tests can be performed in two modes (constant strain/deflection or constant stress/load) and are controlled by the GCTS Computer Aided Testing Software (CATS) package. This software allows the operator to automatically obtain the fatigue life parameters, including initial stiffness, maximum tensile stress/strain, flexural stiffness, phase angle, dissipated energy per cycle, cumulative dissipated energy to failure, and number of cycles to failure.

The GCTS Beam Flexural Fatigue System (BFFS-P) provides a complete solution for Beam Flexural Fatigue tests. A servo-controlled, pneumatic load frame is used to hold HMA beam specimens in four places and apply up to 5 kN loads at up to 10 Hz as required by ASTM and AASHTO testing standards. 


A fiberglass environmental chamber is used to keep the temperature of the specimen constant throughout the test. The operator can program the chamber to hold at any temperature between 5C and 54C. The chamber is insulated to ensure that the temperature does not change dramatically in the case of a power outage. The environmental chamber is set atop an included table for ease of use. 


The BFFS-P utilizes the GCTS SCON-1400 to control the testing procedures and to provide data acquisition for the load cell, displacement sensor, and temperature. Our advanced Beam Flexural Fatigue software module allows the operator to easily run pre-defined or user-programmed tests and to quickly view relevant test parameters and reports. 

System Specifications:

  • 5 kN load capacity
  • 75mm x 75mm x 381mm specimen dimensions
  • 10 Hz maximum loading frequency
  • Temperature control from 5C to 54C
  • 16-bit servo-controller and data acquisition system