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비선형 초음파를 이용한 산업용 및 항공기용 회전체내 손상의 비접촉, 실시간 및 자동감지 기술 개발
Noncontact, real-time, and autonomous diagnosis of fatigue cracks in industrial and aerospace rotor system

  • 사업명

    한국과학기술원운영경비

  • 과제명

    비선형 초음파를 이용한 산업용 및 항공기용 회전체내 손상의 비접촉, 실시간 및 자동감지 기술 개발

  • 주관연구기관

    한국과학기술원
    Korea Advanced Institute of Science and Technology

  • 보고서유형

    최종보고서

  • 발행국가

    대한민국

  • 언어

    대한민국

  • 발행년월

    2015-12

  • 과제시작년도

    2015

  • 주관부처

    미래창조과학부
    Ministry of Science, ICT and Future Planning

  • 등록번호

    TRKO201600002198

  • 과제고유번호

    1711032531

  • DB 구축일자

    2016-06-04

  • DOI

    https://doi.org/10.23000/TRKO201600002198

  • 초록 


    1. Research Purpose
    Most of metallic rotor components used in industrial and aerospace applications fail due to fatigue crac...

    1. Research Purpose
    Most of metallic rotor components used in industrial and aerospace applications fail due to fatigue cracks. Because a fatigue crack grows rather rapidly once it becomes visible, it is absolutely critical to detect it as early as possible. Otherwise, undetected fatigue cracks can result in catastrophic failure of entire systems and human casualties. Therefore, there is an increasing demand to develop an online monitoring system for assessing and ensuring the integrity and safety of the industrial and aerospace rotordynamic systems. When it comes to the development of the online monitoring system, there are two major changes: (1) Conventional vibration based monitoring techniques are not sensitive enough to detect a fatigue crack at its early stage without giving a proper lead time to take necessary preventive measures, and (2) It is difficulty to install sensors to continuously rotating rotor components for real-time inspection.

    In this study, we propose to develop a nonlinear ultrasonic based online monitoring system so that incipient fatigue cracks (less than 100 μm in terms of crack width) can be detected using noncontact air coupled transducers. This research will contribute to advancement of the damage detection technique for industrial and aerospace rotor systems. The proposed damage detection technique will offer the following uniqueness and advantages: (1) Fully noncontact, nondestructive and nonintrusive, (2) instantaneous and automated damage diagnosis, and (3) applicable during the operational (rotating) conditions of rotordynamic systems.


    ...


  • 목차(Contents) 

    1. COVER ... 1
    2. 2015 Seed Money Project Final Report ... 2
    3. 1. Research Purpose ... 3
    4. 2. Research Target Using Progress Chart ... 5
    5. 2.1. Target of the year ... 5
    6. 2...
    1. COVER ... 1
    2. 2015 Seed Money Project Final Report ... 2
    3. 1. Research Purpose ... 3
    4. 2. Research Target Using Progress Chart ... 5
    5. 2.1. Target of the year ... 5
    6. 2.2. Long-term target ... 5
    7. 3. Research Method ... 6
    8. 4. Research Results ... 9
    9. 4.1. Outcome ... 9
    10. 4.2. Research achievements ... 11
    11. 4.3. Further research required ... 11
    12. End of Page ... 11
  • 참고문헌

    1. 전체(0)
    2. 논문(0)
    3. 특허(0)
    4. 보고서(0)

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