초록 ▼

본 과제는 대형 복합재 구조물의 비파괴 검사를 수행함에 있어 비접촉식으로 단시간 내에 결함을 가시화 할 수 있는 기술을 개발하는 것에 초점을 두고 있다. 이를 위해 1단계에서 설립된 한국공학연구소 (Engineering Institute-Korea, EI-K) 조직과 신축된 독립연구소 건물을 활용하여 기관유치·운영 프로그램을 강화 및 신규개발하고 1단계 성과물로서의 원천기술 및 시스템을 2단계 유치강화프로그램에서는 항공우주 및 풍력 분야 등에서의 대형 복합재 구조에 상용화 및 체계투입이 가능한 수준의 가진/센싱-진단-예단 통합원천기

본 과제는 대형 복합재 구조물의 비파괴 검사를 수행함에 있어 비접촉식으로 단시간 내에 결함을 가시화 할 수 있는 기술을 개발하는 것에 초점을 두고 있다. 이를 위해 1단계에서 설립된 한국공학연구소 (Engineering Institute-Korea, EI-K) 조직과 신축된 독립연구소 건물을 활용하여 기관유치·운영 프로그램을 강화 및 신규개발하고 1단계 성과물로서의 원천기술 및 시스템을 2단계 유치강화프로그램에서는 항공우주 및 풍력 분야 등에서의 대형 복합재 구조에 상용화 및 체계투입이 가능한 수준의 가진/센싱-진단-예단 통합원천기술을 공동 개발하여 경제적/사회적 파급효과를 창출하는 데 그 목적을 둔다. 연구 결과로는 광섬유 및 압전 센서 개발, 완전 비접촉 비파괴 검사 기술 개발, 스마트 행가 시스템 개발, 신호처리 및 영상처리 기법 고도화 등이며, 관련 기술 개발 사례는 미국 R&D 100 Award에도 선정된 바 있다.

(출처 : 보고서 요약서 5p)

Abstract ▼

Ⅱ. Research and Development
1. Purpose and necessity of R & D
Recently, in the energy crisis such as the Kyoto Protocol and Japan Nuclear Power Plant explosion, the frequency of use of composite materials is rapidly increasing for fuel consumption reduction and renewable energy production in a

Ⅱ. Research and Development
1. Purpose and necessity of R & D
Recently, in the energy crisis such as the Kyoto Protocol and Japan Nuclear Power Plant explosion, the frequency of use of composite materials is rapidly increasing for fuel consumption reduction and renewable energy production in aerospace and wind energy field. However, as a technical solution to overcome the difficulties of low reliability and inspection, which is a weak point of composite parts, development of structural health monitoring(SHM) technology has been started since 2000s. Recently, development of the technology for evaluating SHM of large composite structure has attracted attention. SHM technology can be used as fundamental technology applied to transportation infrastructure such as aerospace and wind power as well as projectiles, railway vehicles, ships, etc., infrastructure facilities, factory facilities, bridges and dams. However, domestic companies related to SHM are not yet shown in the market share statistics of the world market, so technology development should be completed within short-term in order to secure international competitiveness. In this research project, we conducted research for the purpose of realizing the high status of composite SHM technology and maintaining the reliability of the technology through international joint research with Los Alamos National Laboratory of the US Department of Energy, which belongs to major research institutes in the United States. In the first stage, the goal was to strengthen and develop the program of attracting and operating leading foreign research institute by utilizing the Engineering Institute-Korea (EI-K) organization and the newly built independent research building. The purpose of this study is to create economic and social effects as using the fundamental technology which is results in the first stage of the research program called as Development of Enabling Technologies for Health Management and Reliability Evaluation of Composite Structures and as developing the high level fundamental technology integrated excitation with sensing-diagnosis-prediction with leading foreign research institute in second stage of reinforcement of attracting the institute.

2. Contents and scope of R & D
Our project team is composed by 1 sub-team of Los Alamos National Labortory in US, 2 sub-team of EI-K, KAIST, CBNU and 3 sub-team of EI-K, KAIST, CNU in order to develop the enabling technologies for health management and reliability evaluation of composite structures. We conducted joint research with LANL researchers from US and Korean researchers. The details of each team's research and development are as follows.
• 1 sub-team
- Contents of R&D(1st stage) : Advances in Ultrasonic Propagation Imaging System
- Participating institutes : LANL
• 2 sub-team
- Contents of R&D(1st stage) : Structural Health Management and Reliability Evaluation Technology
- Participating institutes : EI-K, KAIST, CBNU
• 3 sub-team
- Contents of R&D(1st stage) : Embedded Structural Health Monitoring Technology
- Participating institutes : EI-K, KAIST, CNU

3. R&D achievements
We have achieved 100% results of our planned research and development goals by each sub-team, and have established the enabling technologies for health management and reliability evaluation of composite structures.
• Goals : Advances in Structural Health Management Algorithms
• Detail R&D contents : The boarding of the algorithm integrated damage visualization based on ultrasonic wave imaging
• Achievement : 6.25%
• Representative contribution of technology development in the field related to the research goals
- Completion of development of mUEM FPGA firmware
• Detail R&D contents : SHM application of Compressive Sensing
• Achievement : 6.25%
• Representative contribution of technology development in the field related to the research goals
- Compressed sensing contributes to the improvement of high-speed performance because the high-speed inspection of the actual structure is theoretically possible.
• Detail R&D contents : Development of Vibro-Haptic SHM Demonstrator
• Achievement : 6.25%
• Representative contribution of technology development in the field related to the research goals
- Development of arm-wearable haptic interface based on 8bit binary data and demonstration of deformation and impact position detection

• Goals : Structural Health Management and Reliability Evaluation Technology
• Detail R&D contents : Development of smart hanger demonstrator and demonstration: impact location
• Achievement : 6.25%
• Representative contribution of technology development in the field related to the research goals
- GUI development and demonstration for real time display
• Detail R&D contents : Development of smart hanger demonstrator and demonstration:damage visualization
• Achievement : 6.25%
• Representative contribution of technology development in the field related to the research goals
- GUI development and demonstration for real-time mUEM processing and damage visualization
• Detail R&D contents : Development of smart hanger demonstrator:Built-in UPI development and demonstration
• Achievement : 6.25%
• Representative contribution of technology development in the field related to the research goals
- Demonstrated artificial damage visualization of actual aircraft wing using Built-in UPI system and wing internal sensor
• Detail R&D contents : Development of carbon composite material separation plate for high reliability system
• Achievement : 6.25%
• Representative contribution of technology development in the field related to the research goals
- Development of new separator using thermoplastic resin

• Goals : Embedded Structural Health Monitoring Technology
• Detail R&D contents : Development of monitoring technique and damage modeling of composite materials in extreme environments
• Achievement : 6.25%
• Representative contribution of technology development in the field related to the research goals
- Construction of a system that can monitor the strain of adhesive joint in real time under cryogenic environment using OFDR technique and FBG sensor.
- Development of shock detection technology using PVDF polymer sensor fiber in harsh low temperature.
• Detail R&D contents : Developing technology to improve durability and Build hardware for forecasting in extreme environments
• Achievement : 6.25%
• Representative contribution of technology development in the field related to the research goals
- Development of durability improvement technique of adhesive joints in extreme environments using nanofiber reinforcing materials.
- Completion of development of adhesive joint fatigue fracture splitting technology by load and temperature variable using PVDF polymer sensor.
• Detail R&D contents : System combination and optimization of Active-sensing SHM Technique for composite structures
• Achievement : 6.25%
• Representative contribution of technology development in the field related to the research goals
- Development of SHM technology to resist variation of temperature and securement of reliability of SHM result using the SHM technology conversion based on the existing active-sensing and sensor self-diagnosis technology.
• Detail R&D contents : Development of energy harvesting system for electric energy supply of sensing system used for composite structure
• Achievement : 6.25%
• Representative contribution of technology development in the field related to the research goals
- Successful charging of 0.1F super capacitor by on / off switch based multi-conversion energy harvesting device circuit construction
• Detail R&D contents : Reliability evaluation of structures of full-scale wing structures using linear array sensors
• Achievement : 6.25%
• Representative contribution of technology development in the field related to the research goals
- A linear array sensor based low speed impact position estimation system has been developed. Successful detection of impact position of composite structure within estimation error of 5 cm
• Detail R&D contents : Development of sensing system for monitoring of aerospace composites
• Achievement : 6.25%
• Representative contribution of technology development in the field related to the research goals
- Successful measurement of fiber optic sensor optical signal change numerical values of various coating materials exposed to low orbit extreme space environment (UV, Atomic Oxygen, high vacuum, thermal cycle)
• Detail R&D contents : Reliability evaluation of structures using high temperature fiber accelerometer
• Achievement : 6.25%
• Representative contribution of technology development in the field related to the research goals
- Confirm reliability of high temperature operation using confirmation of optical intensity acquisition signal of high-temperature laser processing fiber optic collimation configuration at 300℃
• Detail R&D contents : Development of structural strain sensitive sensor senstive to vibration, impact and Impact position estimation and mode shape prediction
• Achievement : 6.25%
• Representative contribution of technology development in the field related to the research goals
- Check MAC value of mode 0.9 or higher in primary and secondary modes, which are the main modes of the structure
- Detection of impact location within error range 5%(2.5 cm)
• Detail R&D contents : Development of fabrication technology of sensor integrated to composite
• Achievement : 6.25%
• Representative contribution of technology development in the field related to the research goals
- Completed production of 30cm x 30cm smart composite prepreg
- Check the impact sensitivity of 2.6~4.1 mV/N and detect the impact location by Mosaic pattern

4. Applicable planning of R&D results
Based on the enabling technologies, which is the result of research and development at each stage, we plan to carry out follow-up tasks and transfer technology. As using the results of this project, , it is possible to prevent accidents caused by delamination, impact, and vibration in a structure containing a composite material by utilizing the developed SHM technology and It is expected to minimize social and economic costs due to sudden shutdowns by accidents in large composite structures such as wind turbines and large aircraft. In addition, this can be expected to have a positive effect by enabling the stable operation of existing facilities through the application of the enabling technologies developed as a safety issue that is rapidly receiving social attention.

(출처 : SUMMARY 13p)

목차 Contents

• 표지 ... 1
• 제출문 ... 3
• 보고서 요약서 ... 5
• 요약문 ... 7
• SUMMARY ... 13
• CONTENTS ... 19
• 목차 ... 23
• 제 1 장 연 구 개 발 ... 27
• 제 1 절 : 연구개발의 목적 및 필요성 ... 27
• 1. 연구개발의 목적 및 필요성 ... 27
• 2. 복합재 구조건전성관리 및 비파괴신뢰성평가 연구의 필요성 ... 27
• 3. 항공기 개발 프로그램에서의 건전성관리 및 비파괴신뢰성평가 기술의 중요성 ... 27
• 4. 풍력블레이드 개발 및 생산에서의 건전성관리 및 신뢰성평가 기술의 중요성 ... 29
• 제 2 절 : 국내외 기술개발 현황 ... 32
• 1. 세계적 수준 ... 32
• 2. 국내수준 ... 34
• 3. 국내외 연구현황 ... 35
• 4. LANL의 공동연구소 주체들의 2011년까지의 연구개발 실적 ... 39
• 제 3 절 : 연구개발 내용 및 결과 ... 44
• 1. 1차년도 각 세부별 연구개발 내용 및 범위 ... 44
• 2. 2차년도 각 세부별 연구개발 내용 및 범위 ... 125
• 3. 3차년도 각 세부별 연구개발 내용 및 범위 ... 194
• 4. 4차년도 각 세부별 연구개발 내용 및 범위 ... 302
• 5. 5차년도 각 세부별 연구개발 내용 및 범위 ... 371
• 6. 6차년도 각 세부별 연구개발 내용 및 범위 ... 455
• 7. 최종 각 세부별 연구개발 내용 및 범위 ... 528
• 제 4 절 : 연구개발 목표달성도 및 관련분야에의 기여도 ... 614
• 제 5 절 : 연구개발결과의 활용 계획 ... 628
• 제 2 장 기관유치 및 운영 ... 636
• 제 1 절 : 해외연구기관 유치 목적 및 필요성 ... 636
• 1. 해외연구기관의 우수성 ... 636
• 2. LANL의 2010년 대표적 연구개발 실적 ... 637
• 3. Los Alamos National Laboratory 유치목적 및 공동연구의 필요성 ... 638
• 4. Los Alamos National Laboratory의 유치의 국가 및 지역적 필요성 및 기여도 ... 639
• 제 2 절 : 공동연구센터 운영 현황 ... 642
• 1. 로스알라모스연구소-전북대학교 한국공학연구소 설치 장소 및 규모 ... 642
• 2. 조직 구성 ... 642
• 3. 자원(인력, 자금) 운용 ... 646
• 제 3 절 : 해외연구기관의 협력 성과 ... 668
• 1. 미래창조과학부 해외우수기관유치사업에서 R&D 역할 및 기여 ... 668
• 2. 해외기관의 현물 투자 ... 669
• 3. 연구소 최고운영위원회(EI-K Planning Meeting) 정례화 ... 670
• 4. 학연과정(Collaborative Degree Course) 운영 ... 671
• 5. LANL연구원의 EI-K에서의 인턴쉽과정 개설 운영 ... 678
• 6. Guest teacher ... 681
• 7. 본원과의 활발한 인력교류 ... 682
• 8. 활발한 국제워크샾 개최 활동 ... 695
• 9. 국제학술대회 ... 701
• 10. Los Alamos Dynamics Short Course 개최 ... 713
• 제 4 절 : 해외연구기관 유치 노력 및 성과 ... 715
• 1. 미래창조과학부 해외우수기관유치사업 ... 715
• 2. 추가 R&D 과제수주 및 인력양성사업 참여를 통한 공동연구소 운영성과 ... 715
• 3. 추가 인력양성사업 참여를 통한 공동연구소 운영성과 ... 725
• 4. 유기적 공동연구팀구성을 통한 과제수주 ... 728
• 5. 연구소 전임교수 신규채용 ... 729
• 6. 활발한 국내외 초정강연 및 홍보활동 ... 731
• 제 5 절 : 공동연구센터 자립 및 활용계획 ... 742
• 1. 재원 및 우수연구원 확보 ... 742
• 2. 독립연구소 완공 ... 745
• 제 3 장 기타 사항 ... 747
• 제 1 절 : 사업추진과정에서 수집한 해외과학기술정보 ... 747
• 제 2 절 : 연구시설‧장비 현황 ... 749
• 1. 연구시설 현황 ... 749
• 2. 연구장비 도입 현황 (3천만원 이상) ... 749
• 3. 연구시설 및 장비 운영 현황 및 계획 ... 750
• 제 3 절 : 기타 사업성과 ... 751
• 1. R&D 100 Award 수상 ... 751
• 2. 복합재 다층 층간분리 검출 및 영상가시화가 가능한 THz를 이용한 결함검사 기술 및 GUI 구축 ... 751
• 3. 다양한 연구소 홍보활동 ... 753
• 제 4 절 : 참고문헌 ... 753
• [붙임 1]해외우수연구기관유치사업연차별 목표 및 달성도 현황 ... 754
• [붙임 2]해외우수연구기관유치사업예산 확보 및 사용 실적 ... 774
• [붙임 3]해외우수연구기관유치사업대표 성과 및 연구성과 보고서 ... 780
• 끝페이지 ... 896