Project Scope:

  • EDC was engaged to investigate repeated cracking in the stick of a PC5500 excavator.
  • Develop and verify a solution using a strain gauge monitoring system during operation.


  • Unknown level of forces experienced by the stick during operation.
  •  Detailed drawings were not available to develop the FEA model of the stick.


Through measurement, modelling and analysis, the team
was able to:

  • Reduce the stress range by 35% after implementing the reinforcement.
  • Verify through measurements an improvement to crease the fatigue life of the excavator stick.