Adjusting of the Loading Rate in Cyclic Strength Tests

Abstract

A method of automated self-tuning of the loading rate of test specimens in conditions ofmulticycle strength tests is developed. The method provides optimal use ofthe energy potential of the equipment loading the specimen and shortens the analysis procedure. The essence ofthe method consists in determination ofthe maximum current that controls electrohydraulic amplifier, comparison of the current value with the maximum control current capacity and (in the case it becomes below the admissible control current value) in leveling both values by increasing the rate ofloading.