초록 ▼

○ 철도소재·부품융합연구센터의 설립 및 운영
· 연구센터의 자립 운영 기반구축, 강소기업 연구지원, 연구 분야 확대, 해외협력사업 지원
○ 우수한 철도인재양성
· 철도소재·부품분야의 인재양성 교육프로그램 개발
· 다양한 교육 커리큘럼 제공 및 철도강소기업 취업실적
○ 철도핵심부품장치개발관련 연구

· 연결기 완충특성이 열차제동 충격발생에 미치는 영향 분석/저감기술
- 제동 충격발생 저감용 연결완충기 설계방안 및 유지보수방안 제시

· 열화손상고무의 온도조건에 따른 내구특성분석 및

○ 철도소재·부품융합연구센터의 설립 및 운영
· 연구센터의 자립 운영 기반구축, 강소기업 연구지원, 연구 분야 확대, 해외협력사업 지원
○ 우수한 철도인재양성
· 철도소재·부품분야의 인재양성 교육프로그램 개발
· 다양한 교육 커리큘럼 제공 및 철도강소기업 취업실적
○ 철도핵심부품장치개발관련 연구

· 연결기 완충특성이 열차제동 충격발생에 미치는 영향 분석/저감기술
- 제동 충격발생 저감용 연결완충기 설계방안 및 유지보수방안 제시

· 열화손상고무의 온도조건에 따른 내구특성분석 및 평가기술
- 열화 손상고무의 온도 조건에 따른 내구특성 평가기술 확보

· 베어링의 환경내구평가 분석 및 평가기술
- 다양한 결함 조건에 따른 고장 원인 분석 및 RCF 내구수명시험기를 이용한 환경 피로평가

· 초음파 진단적용기술 및 부품결함/불량진단기술
- 애자 및 배전설비에서의 음향 방출 측정 및 패턴 분석 및 애자 및 배전설비의 불량 판단 기준 확립

· 반도체차단기 원천기술 및 전력변환 시스템 신뢰도 향상 기술
- 철도용 전력변환 시스템 및 회로 신뢰도 향상 기술과 교류 반도체 차단기의 차단 성능 신뢰도 향상 기술 연구

○ 철도융합연구센터 성과분석평가 및 발전방안
 성과지표 및 분석 방법론 도출
 평가지침 및 정책분석 기준 정립
 성과분석 및 정책개선방안 도출
 지속가능한 철도융합연구센터 운영방안 도출

(출처 : 보고서 요약서 3p)

Abstract ▼

Purpose & Contents
The aim of this research is to establish ‘Complex Research Center for Materials & Components of Railway systems’ and develop ‘the core technologies for components and machinery of railway systems’. The fundamental technology level for railway components and machinery would get

Purpose & Contents
The aim of this research is to establish ‘Complex Research Center for Materials & Components of Railway systems’ and develop ‘the core technologies for components and machinery of railway systems’. The fundamental technology level for railway components and machinery would get to the globally advanced level through this research center. In addition, the excellent researcher will be highly educated through this research center and they will be worked in the railway industry, and the cooperation between our research center and railway industry would become more familiar through this research. The following aims will be performed through this research center.
- The ‘Complex Research Center for Materials & Components of Railway’ is established as four research laboratories like Material․ mechanics Lab., Mechatronics Lab., Electric․electronics Lab. and Policy development & planning Lab. where about 10 professors and more than 10 students are involved. The research center is controled under the Graduate school for railway of Seoultech.
- Our research center will educate and train about 10 graduate students for railway industry.
- Our research center establishes the network for cooperation with the railway industry and research center and policies for improvement of railway industry will be provided to Ministry of Land and Transportation, and the fundamental and core technology related to the project is developed to the globally advanced level.
- Through the policy development & planning research for railway industry and the research center, the future strategies for railway industry are derived and recommended to Government.

- Establishment and operation of ‘Complex Research Center for Materials & Components of Railway’
∙ The research center is consisted of as 10 professional, over 10 researcher, 3 Labes. such as Material․mechanics Lab., Mechatronics Lab., Electric․electronics Lab. and Policy development & planning Lab. It is under control of under the Graduate school for railway of Seoultech.
∙ Research test equipments : Lab. size(50m2), Material․mechanics Lab.(19 types), Mechatronics Lab.(9 types), Electric․electronics Lab.(20 types)
∙ Research center is growed by 30% annually as the results of additional research performance, education for MA/Phd students, publication of research results.
∙ For railway industry, Research Lab. and equipments are opened, Advanced technologies are educated. and professors related to research center perform consultant.
∙ DB for information and experts related to materials & components of railway systems was built.

- Training students for railway R&D experts.
∙ Production of about 10 graduate students majoring in railway technology and experiencing research projects on railway components and machinery
∙ Published research papers : 0.5 paper/a student, attended conference
: one paper/a student. enterprise program for work ∙ experience of students was implemented and over 50% of educated students were employed the enterprises related to railway industry.
∙ The students attended the classes which was lectured by English and the seminars hold in overseas and they published one paper per a student.

- The fundamental and core technology involved in this project is developed to the globally advanced level.
∙「Analysis and reduction technology of coupler cushion characteristics influencing impact power when a train brakes」
∙「Temperature durability analysis and evaluation technique of thermally damaged rubber specimens」
∙「Analysis and evaluation technique of the environmental endurance of bearing」
∙「Development of the AE(Acoustic Emission) sensor and diagnosis technology for prognosis detection of railway system failure」
∙「Research for the source technology of solid state circuit breaker and the reliability enhancement of power conversion system」

- The policy development & planning research on railway industry and the research center for the future government strategies for railway industry
∙ Derivation of guideline for standardized operation and management of research achievements
∙ Evaluation of achievements of the research centers and derivation of developmental strategies and the related action programs
∙ Publishing the annual report on investigating, analyzing and evaluating technology developments and the achievements of the research centers, and suggesting the future plans and the developmental strategies for railway industry

Results
- Through four years of research, the following result can be achieved. 6 papers for domestic publication, 4 papers for oversea publication, 10 papers for international conference, 6 applications for patent, 1 registration of patent, 15 students for student education and training.

- [The 2^nd year]Domestic and oversea paper publications: 4 papers for 4 papers (achievement 100%)
①「Open-switch fault detection and faulty switch identification of PWM inverter in PMSM drives using DOB based voltage information」, International Journal of Applied Engineering Research Vol. 11, No.2
② 「A Study on Acceleration Performances of EMUs According to Wheel Diameter Changes」, Journal of the Korea Society of Safety, Vol.30, No.5
③ 「Estimation of the Overhaul Cycle Time for KTX Wheelset Bearing by RCF Test」, Journal of The Korea Society of Safety, Vol.31, No.1
④ 「A Study on the Accelerated Life Test of Rubber Specimens by using Stress Relaxation」, Journal of the Korea Society of Safety, Vol.31, No.1

- [The 3^rd year]Domestic and oversea paper publications: 4 papers for 4 papers (achievement 100%)
①「Effect of Water Contamination of the Lubricant and Surface Roughness of Bearing Steel on the Rolling Contact Fatigue Life」, Journal of the Korea Society of Safety, Vol. 32, No. 1
②「A Microscopic Observaition of Rolling Contact Fatigue Damages under the Water-Contaminiated Lubrication Environment」, Korea Society of Mechanical Technology, Vol. 19, No. 2
③「Fast Detection of Open-switch Fault Using Moving Filter for a PWM VSI-fed PMSM Drive System」, IJAER(International Journal of Applied Engineering Research), Vol. 12, No. 6
④「Temperature-dependent Mullins Effect in Anti-vibration Rubber for Railway Vehicles」, Journal of the Korean Society of Manufacturing Technology Engineers Vol. 26, No. 2

- [The 4^th year]Domestic and oversea paper publications: 3 papers for 3 papers (achievement 100%)
①「A Practical Approach to Localize Simultaneous Triple Open-Switches for a PWM Inverter-Fed Permanent Magnet Synchronous Machine Drive System 」, Energies.
②「Reliable Open-switch Fault Localization Scheme in Multiple Switches for inverter-fed Permanent Magnet Synchronous Machine Drives」, Electric Power Components and Systems, Vol. 45, No. 18
③「Evaluation of Accelerated Life of High-temperature Deteriorated Rubber by Stress Relaxation」, Journal of the Korean Society of Manufacturing Technology Engineers, Vol. 27, No. 1.

- [The 2^nd year]International conference : 3 papers for 2 papers (achievement, 150%)
① A theoretical derivation of cross wind speed for train derailments considering the dynamic effects of wheel-rail interactions
② Damage Detection by Rolling Contact Fatigue Tester with AE and G sensors
③ Lifetime prediction of Rubber Components Using Stress Relaxation

- [The 3^rd year]International conference : 4 papers for 2 papers (achievement, 200%)
① A Study on Prediction of Lateral Buckling for a Leading Vehicle
② Simple Real-time Diagnosis Scheme for an Inverter Open-switch Fault in a Permanent Magnet Synchronous Machine Drive System
③ Analysis Methods of Socio-Economic Effect in Railway Project
④ Stress Softening and Recovery of Natural Rubber under Repeated Loading and Unloading

- [The 4^th year]International conference : 3 papers for 2 papers (achievement, 100%)
① Effect of shot peening intensity on rolling contact fatigue life of high carbon chromium steel
② Open-switch Fault Detection and Fault Localization in PMSM Drives through Current Waveform Analysis
③ Observer-based State Feedback Control of anLCL-filtered Grid-connected Inverter for Distributed Power Generation System

- The application for patent: 7 patents for 4 patents(Achievement, 175%)
① Patent Name: Railway Transport Impact Reduce Device
[Patent application number: 10-2016-0033967]
② Patent Name: System and method for localizing multiple open-switch faults in inverter
[Patent application number: 10-2016-0150539]
③ Patent Name: Extention-Compression fatigue Tester of Rubber
[Patent application number: 10-2017-0019874]
④ Patent Name: Rolling Contact Fatigue Tester
[Patent application number: 10-2017-0024321]
Patent Name: ⑤ Ratchet Wrench with Electroscopic Function
[Patent application number: 10-2017-0033688]
⑥ Patent Name: Railway Transport Impact Reduce Device
[Patent register number: 10-1800338]
⑦ Patent Name: System and method for localizing open-switch faults in inverter using current information in free-wheeling mode
[Patent application number: 10-2017-0153956]
- Students education and training : 16 students for master course Graduation, 2 students for doctor course completion.

Expected Contribution
- Through this research, the domestic railway technology, which is very weak, will become stronger and having abilities for global technological competition, and several global hidden champions of railway industry would be well fostered.

- Through the education courses for the railway researchers involved in this project, the highly educated students, who play great roles for the global hidden champions of railway industry, will be supplied.

These students educated through this research can well perform creative researches for railway technology and technological businesses for global marketings.

- The domestic small and medium size companies jointed with our research center can use research equipment and facilities belonging to the center. In addition, the fundamental and core technologies necessary for designing railway components and machinery can be developed under the cooperation between the research center and the concerning company.

By sharing the research infrastructure belonging to the research, the companies developing a new product can easily go into research projects.

- Finally, by investigating, analyzing and evaluating the achievements done by our research center, we will derive very prosperous research items related to railway components and machinery, and establish the future R&D policy and the action programs supporting the railway industry.

(출처 : SUMMARY 9p)

목차 Contents

• 표지 ... 1
• 제 출 문 ... 2
• 보고서 요약서 ... 3
• 요 약 문 ... 5
• SUMMARY ... 9
• Contents ... 13
• 목차 ... 14
• 제1장. 연구개발과제의 개요 ... 15
• 제2장. 국내외 기술 개발 현황 ... 21
• 제1절. 연결기 완충특성이 열차제동 충격발생에 미치는 영향분석/저감기술 ... 21
• 제2절. 열화손상고무의 온도조건에 따른 내구특성분석 및 평가기술 ... 24
• 제3절. 베어링의 환경내구평가 분석 및 평가기술 ... 26
• 제4절. 초음파 진단 적용 기술 및 부품 결함/불량 진단 기술 ... 27
• 제5절. 반도체차단기 원천기술 및 전력변환 시스템 신뢰도 향상 기술 ... 29
• 제3장. 연구 수행 내용 및 성과 ... 33
• 제1절. 철도소재·부품 융합연구센터 설립/운영 ... 33
• 제2절. 철도소재·부품분야 창의·융합연구 인재양성 ... 68
• 제3절. 연결기 완충특성이 열차제동 충격발생에 미치는 영향분석/저감기술 ... 103
• 제4절. 열화손상고무의 온도조건에 따른 내구특성분석 및 평가기술 ... 147
• 제5절. 베어링의 환경내구평가 분석 및 평가기술 ... 186
• 제6절. 초음파 진단적용기술 및 부품결함/불량진단기술 ... 223
• 제7절. 반도체차단기 원천기술 및 전력변환 시스템 신뢰도 향상 기술 ... 244
• 제8절. 철도융합연구센터 성과분석평가 및 발전방안 ... 293
• 제4장. 목표 달성도 및 관련 분야 기여도 ... 392
• 제5장. 연구개발성과의 활용계획 ... 400
• 제6장. 연구 과정에서 수집한 해외 과학기술 정보 ... 405
• 제1절. 연결기 완충특성이 열차제동 충격발생에 미치는 영향분석/저감기술 ... 405
• 제2절. 열화손상고무의 온도조건에 따른 내구특성분석 및 평가기술 ... 407
• 제3절. 베어링의 환경내구평가 분석 및 평가기술 ... 408
• 제4절. 초음파 진단적용기술 및 부품결함/불량진단기술 ... 408
• 제5절. 반도체차단기 원천기술 및 전력변환 시스템 신뢰도 향상 기술 ... 409
• 제7장. 연구개발성과의 보안등급 ... 411
• 제8장. 국가과학기술종합정보시스템에 등록한 연구시설·장비 현황 ... 411
• 제9장. 연구개발과제 수행에 따른 연구실 등의 안전 조치 이행 실적 ... 411
• 제10장. 연구개발과제의 대표적 연구 실적 ... 411
• 제11장. 기타 사항 ... 414
• 제12장. 참고 문헌 ... 415
• 끝페이지 ... 422