PFEA Working with state universities, PPI has developed a unique Finite Element Analysis program, PFEA. PFEA has brought new understanding to the dynamics of a conveyor pulley system. Today, it is used on each and every High Tension Pulley that PPI builds. How do these stresses affect the life of the pulley? That is where our IP-Life analysis comes into play. It gives our Engineers the effect of the stress on life expectancy of a pulley assembly. This unique combination of PFEA and IP-Life Analysis gives our Engineers state of the art tools to design World Class High Tension Pulleys.