If the failure is defined as the final fracture of a component, then both S-N curves and crack growth rate curves reflect the fundamental material behavior under fatigue loading.

Reliability of a non-repairable component, failure rate of a repairable component, reliability of a complex mechanical system as well as maintainability and availability are briefly discussed.

Adopt magnetic induction control system of independent property right. It can effectively avoid electrical component deterioration and has lower failure rate.