The damage diagnosis and countermeasure of rolling stock parts

전동차부품의 손상진단 및 그 대책

  • 박수중 (서울Metro, 정보화전담반 (Rims)) ;
  • 안영환 (서울Metro 성수승무사무소) ;
  • 임상윤 (서울Metro 군자차량사무소)
  • Published : 2007.05.17

Abstract

This dissertation finds out trouble types and occurrence regions using the faulty statistics of nondestructive test items in rolling stock parts of the Seoul Metro and using mechanical test about defective and broken parts with broken surface observation, cutting examination about trouble region, hardness experiment and tensile test. Also this dissertation finds out cause of trouble and damage through observation of microscopic formation using metallurgical microscope and scanning electron microscope, residual stress measurement about welding parts and damage diagnosis about defective and broken parts. Moreover it will present the improved plan of nondestructive method about trouble and the removal method of defect and repair welding and find solutions of reliability in parts and preventive maintenance.

Keywords