The durability test and performance evaluation of starter bar forgings is to determine its service life and performance in the actual working environment.
First, a common test is the fatigue test. This test is used to simulate the working condition of the starter bar forging under long-term cyclic loading. The fatigue life and fatigue strength of forgings can be evaluated by applying cyclic load and monitoring the number and amplitude of load application. Fatigue test can also be used to determine the fatigue limit of the starting bar forging and the deformation under stress cycle.
In addition, strength tests can also be carried out. This test is used to evaluate the bearing capacity and strength performance of starter bar forgings under static load. The static strength and failure characteristics of starter bar forgings can be determined by applying static load, testing the breaking strength under different load levels and observing the failure mode of forgings.
In addition, metallographic analysis and microstructure observation can be performed. The crystal structure, grain size and impurity content of the starting bar forgings can be understood by investigating the metallographic structure of the starting bar forgings, and its influence on the performance of the forgings can be evaluated. At the same time, the microstructure observation can also find the possible defects in the forging of the starter rod, such as inclusions, cracks, etc., and carry out reasonable evaluation and improvement.
In addition to tests, performance can also be evaluated by means of numerical simulation methods. The stress distribution, deformation and fatigue life of starting bar forgings under specific working conditions can be predicted by finite element analysis. This method can provide guidance for the design optimization and the selection of related parameters, and save the test time and cost.
To sum up, durability test and performance evaluation of starting bar forgings are determined by fatigue test, strength test, metallographic analysis, microstructure observation and numerical simulation. These evaluation results will provide the basis for the design and manufacture, and ensure that the starter bar forging can run continuously and stably in the actual work.
