DEVICE FOR TESTING DYNAMIC DURABILITY OF MATERIALS

A prototype of a test device for achieving a dynamic material load was made. Due to long-term periodic variable loads (stresses) there is a so-called material fatigue, the consequences of which are the rupture of the material at significantly lower stresses than the maximum tensile strength. Lasting dynamic strength, ie dynamic endurance, can be analyzed on test systems (fatigue) which enable testing of the actual loads of mechanical components as expected during their operation. A two-acting pneumatic cylinder controlled by proportional pressure regulators is used to achieve the required force. Compared to the hydraulic solutions used to achieve high forces, the manufactured pneumatic device is of simpler construction and is more environmentally friendly.