지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2007.6
- 수록면
- 67 - 71 (5page)
이용수
초록· 키워드
오류제보하기
Carbon fibre reinforced plastics (CFRP) should be inspected in fabrication process in order to enhance quality by prevent defects such as delamination and void. Generally, ultrasonic technique is widely used to evaluate FRP. In conventional ultrasonic technique, transducer should be contacted on FRP. However, conventional contacting method could not be applied in fabrication process and novel non-contact evaluating technique was required. Technique using air-coupled transducer can make non-contacting ultrasonic technique available in evaluation of FRP. Therefore, in this study, generation technique of laser-based ultrasound using Nd:YAG pulse laser(532㎚, 32mJ) system and reception technique using air-coupled transducer are applied for the non-destructive and non-contact evaluation of delamination in CFRP.
Wave propagating through artificial delamination region was received using pitch-catch arrangement.
Signal characteristics due to defects were analyzed to find a factor for detecting defects. PZT sensor was used to get a trend of waveform and fundamental database. The high frequency component of 1.1 ㎒ of laser-generated guided wave received with piezoelectric sensor disappeared after propagating through delamination region. However, it could not be received this high frequency guided wave by using air-coupled transducer and linear slit array. In a frequency spectrum of laser-generated guided wave received by air-coulped transducer, the first peak of frequency spectrum under 100㎑ received in the defect region showed higher than in the sound region. The peak of frequency spectrum represented approvable parameter to detect delamination in CFRP. By using this feature, line scanning data was acquired in fully non-contacting pitch-catch method and was proved as useful technique for detecting delamination in CFRP.
Wave propagating through artificial delamination region was received using pitch-catch arrangement.
Signal characteristics due to defects were analyzed to find a factor for detecting defects. PZT sensor was used to get a trend of waveform and fundamental database. The high frequency component of 1.1 ㎒ of laser-generated guided wave received with piezoelectric sensor disappeared after propagating through delamination region. However, it could not be received this high frequency guided wave by using air-coupled transducer and linear slit array. In a frequency spectrum of laser-generated guided wave received by air-coulped transducer, the first peak of frequency spectrum under 100㎑ received in the defect region showed higher than in the sound region. The peak of frequency spectrum represented approvable parameter to detect delamination in CFRP. By using this feature, line scanning data was acquired in fully non-contacting pitch-catch method and was proved as useful technique for detecting delamination in CFRP.
목차
Abstract
1. 서론
2. 비접촉 초음파 측정 기법
3. 실험 결과 및 고찰
4. 결론
후기
참고문헌
참고문헌 (0)
참고문헌 신청함께 읽어보면 좋을 논문
논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!
-
레이저 유도 초음파를 이용한 복합재료 층간 결함의 비접촉 비파괴 평가
대한기계학회 춘추학술대회
2007 .10
-
CFRP 판재의 비파괴 평가를 위한 비접촉식 초음파 평가 기법
대한기계학회 춘추학술대회
2005 .05
-
CFRP가공 시 드릴의 형상에 따른 Delamination 분석
한국생산제조학회 학술발표대회 논문집
2016 .11
-
탄소 섬유 강화 복합재료(CFRP)의 층간 분리 결함 평가를 위한 비접촉식 초음파 평가 기법 연구
Journal of the Korean Society for Precision Engineering
2007 .03
-
CFRP 적층복합재료의 층간분리 평가 ( An Analysis for Delaminations in CFRP Laminates )
대한기계학회 춘추학술대회
2000 .04
-
CFRP의 밀링 가공 시 박리에 관한 연구
한국기계가공학회 춘추계학술대회 논문집
2019 .10
-
다구찌법을 이용한 CFRP의 가공 시 표면 박리에 관한 연구
한국기계가공학회 춘추계학술대회 논문집
2020 .06
-
탄소섬유복합재 드릴링 공정의 박리 예측 및 분석
한국생산제조학회 학술발표대회 논문집
2020 .07
-
레이저 초음파를 이용한 복합재료 층간 결함의 정량적 평가
Journal of the Korean Society for Precision Engineering
2007 .11
-
균열길이와 층간분리 폭의 관계를 이용한 하이브리드 복합재의 층간분리 거동 평가
대한기계학회 논문집 A권
2004 .01
-
Development of the Delamination Evaluation Parameters (Ⅰ)-The Delamination Aspect Ratio and the Delamination Shape Factors-
Journal of Mechanical Science and Technology
2004 .11
-
에너지 해방률을 이용한 CFRP 적층복합재료의 층간분리 평가 ( An Analysis for Delaminations Using Energy Release Rate In CFRP Laminates )
대한기계학회 논문집 A권
2000 .08
-
CFRP의 드릴작업시 AE적용에 의한 손상평가
한국안전학회지
2001 .01
-
CFRP Drilling Experiments : Investigation on Defect Behaviors and Material Interface Detection for Minimizing Delamination
Journal of the Korean Society for Precision Engineering
2016 .06
-
Mode conversion and scattering analysis of guided waves at delaminations in laminated composite beams
Structural monitoring and maintenance
2015 .01
-
복합적층판의 Delamination 해석 ( Analysis of Delamination in Laminated Composites )
대한기계학회 논문집
1982 .01
-
레이저 초음파를 이용한 탄소섬유강화 복합재료의 층간 결함 검출에 관한 연구
대한기계학회 춘추학술대회
2013 .03
-
Finite element based dynamic analysis of multilayer fibre composite sandwich plates with interlayer delaminations
Advances in aircraft and spacecraft science
2016 .01
-
CFRP 밀링 가공에서의 공구별 절삭력과 결함 분석
한국정밀공학회 학술발표대회 논문집
2020 .09
-
콘크리트 내의 공동 탐사를 위한 전자파 모델링
대한건축학회 학술발표대회 논문집 - 구조계
2003 .10
이 논문의 저자 정보
이 논문과 함께 이용한 논문
최근 본 자료
댓글(0)
0
UCI(KEPA) : I410-ECN-0101-2010-550-002470722