A TEST-APPARATUS OF DYNAMIC STRESS IN BOGIE FRAME FOR URBAN TRANSIT VEHICLES AND THE METHOD THEREFORE

摘要

The present invention is a strain gauge mounted on the urban railway vehicle bogie frame in the dynamic stress measurement test of the urban railway vehicle bogie frame; An amplifier for amplifying the strain of the signal generated in the strain gauge; A data logger for converting the signal amplified by the amplifier into data; A tape recorder for storing the data converted by the data logger; A data processor which calculates stress amplitude, average stress, fatigue damage accumulation, load waveform cycle calculation, Goodman diagram, etc. using data and material properties stored in the tape recorder; It relates to a bogie frame dynamic stress measuring device composed of an output unit for outputting various data calculated by the data processing unit.;In addition, the present invention relates to a method for measuring the dynamic stress of an urban railway vehicle bogie frame for calculating fatigue endurance life in consideration of the average annual mileage and evaluating fatigue orality by analyzing the data calculated using the measuring device.;Balance frame, dynamic stress, fatigue oral cavity, fatigue durability life