Testing of helical spring using composite materials

The influence of corrosion combined with mechanically generated surface flaws on the durability of
vehicle springs. In the course of this project, different spring production technologies and surface
coating systems were associated for a generic spring type in order to control the best manufacturing
and corrosion protection practices that would ensure a long fatigue life as well as to derive the
necessary measurements and parameters for reliable testing. This comprehensive testing program
involved several vehicle and spring manufacturers. The following pages offer a first-time qualitative
evaluation of the results. An effective countermeasure is to recover surface protection. The effects
and advantages of consuming ceramic coating on helical compression springs have been developed.
The work shows the deflection responses of the spring under static loading. The advantages of using
ceramic coating was clearly visible as lower values deflection was settled in the coated spring. The
stress concentration was also lower in the base material due to effect of the coating. Higher service
life is obtained from coated springs for this reason. The differences in values of axial deflection
theoretically and by compression test is substantial because we see that in out deflection is more
towards one side owing to constraints in uniform axial loading. If loading is done perfectly then the
error is in the region of 3-5%.