Fatigue testing of disc springs is necessary to evaluate their performance and lifespan under varying loads and cyclic stresses. During operation, disc springs are typically subjected to different degrees of load variations and stress cycles, which can lead to deformation, wear, relaxation, and even breakage. Therefore, to ensure the quality and reliability of disc springs, fatigue testing is required to determine the maximum number of cycles they can achieve under given failure conditions, i.e., fatigue life.
Before fatigue testing, the fatigue testing machine is pre-loaded, essentially setting the working position of the disc spring assembly. The disc springs are then assembled and placed into the fatigue testing machine, with grease applied to their surfaces before placement. During testing, the upper plate remains stationary, while only the lower plate moves to complete the test.
It is important to note that parameters such as dynamic load, frequency, and number of cycles must be set on the computer before the test begins. After the test, the disc spring surfaces should be promptly observed for any fractures, and the test parameters should be recorded.
The results of disc spring fatigue testing can be used to improve the design and manufacturing process of disc springs. By analyzing the performance and failure modes of disc springs during testing, possible improvements can be identified to enhance their lifespan and reliability. For example, adjustments may be needed to the material selection, reduce stress concentration areas, or increase the spring's thickness to ensure its reliability and safety in practical applications.
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Raleigh Spring Technology Co., Ltd.
