Landmark Series Electro-hydraulic Servo Fatigue Testing Machine Design Analysis

Electro-hydraulic servo fatigue testing machine is the testing equipment,what tests metal materials,structural parts,concrete and other test parts to get the specific data on reliability and fatigue life.In the design of electro-hydraulic servo fatigue testing machine PID is mainly applied to control the system.Nowadays,electro-hydraulic servo fatigue testing machine at home and abroad has a great progress compared with the past,such as test frequency,test accuracy and reliability.Compared with other testing machine manufacturers,the main model of the Landmark series electro-hydraulic servo fatigue testing machine of MTS Systems,a mainstream manufacturer of electro-hydraulic servo fatigue testing machines,is widely used,and its system control method is PID control.This model series can do not only simple stress fatigue test,but also strain-controlled low cycle fatigue test,KIC,CTOD,JIC,fatigue crack test,threshold and other fracture tests.The design rationality of Landmark series electro-hydraulic servo fatigue testing machine system determines the reliability and accuracy of this testing system.Landmark series electro-hydraulic servo fatigue testing machine system is composed of hydraulic power unit,loadframe and controller.The pump of 515 series hydraulic power unit is placed in the oil tank,so that the noise is reduced.The alignment hydraulic cylinder is applied to the loadframe of Landmark series.Hydraulic servo manifold can choose different models In according to different required flow of test,the different hydraulic servo manifold can be chosen.The different types of Flextest series digital controllers can be configured according to the requirement of test.Landmark series of MTS is more comprehensive than other manufacturers.Compared with the electro-hydraulic servo fatigue testing machine system of other manufacturers,the testing machine system of MTS is mature,and configuration of its system is comprehensive and flexible,which can meet various testing conditions.Analyzing the development of electro-hydraulic servo fatigue testing machine at home and abroad,and comparing the basic parameters of electro-hydraulic servo fatigue testing machine at home and abroad.Introducing and analyzing the structure of MTS Landmark series electro-hydraulic servo fatigue testing machine system,and verifies the rationality of the loadframe structure of the Landmark 370.10.The specific operation of the hydraulic power unit,Landmark series frame,controller,and operating software of the testing machine system is introduced.Analyzing usage problems of the Landmark series electro-hydraulic servo fatigue testing machine,and summarizing the specific methods to solving the problems.