Abstract
Fatigue damage is the main form of spring failure, the spring fatigue test is a mandatory test item before the spring is put into use. Especially for springs in key parts such as automobile suspension springs, train damping springs and engine valves, they can only be put into use after passing strict tests. Since there are many different types of spring structures with different stresses, the fatigue detection and evaluation methods are also different. This paper designs the compression spring fatigue tester from several aspects, including composition structure, working principle, and technical points. This spring tester can test the maximum number of cycles of a spring for a given failure condition by applying a cyclic variable load to the spring.
https://ror.org/018rbtf37 
