Browse > Article

Monitoring of Low-velocity Impact Damage Initiation of Gr/Ep Panel 7sing Piezoeleetric Thin Film Sensor  

박찬익 (국방과학연구소)
김인걸 (충남대학교 항공우주공학과)
이영신 (충남대학교 기계설계공학과)
Publication Information
Composites Research / v.15, no.2, 2002 , pp. 11-17 More about this Journal
Abstract
The piezoelectric thin film sensor can be used to interpret variations in structural and material properties, e.g. for structural integrity monitoring and assessment. To illustrate one of this potential benefit, PVDF (polyvinylidene fluoride) film sensors are used for monitoring impact damage in Gr/Ep composite panels. Both PVDF film sensors and strain gages are attached to the surface of Gr/Ep specimens. A series of impact tests at various impact energy by changing impact mass the height are performed on the instrumented drop weight impact tester. The sensor responses are carefully examined to predict the onset of impact damage such as indentation, matrix cracking, and delamination, etc. Test results show that the particular waveforms of sensor signals implying the damage initiation and development are detected above the damage initiation impact energy. As expected, the PVDF film sensor is found to be more sensitive to impact damage initiation event than the strain gage.
Keywords
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 On the Inverse Problem of Rectangular Plates Subjected to Elastic Impact Part Ⅱ: Experimental Verification and Further Applications /
[ Yen Ching-Shih;Wu Enboa ] / Trans. of the ASME. Journal of Applied Mechanics   DOI   ScienceOn
2 /
[ 임제탁;이두수 ] / 이산신호처리
3 An Experimental Method for Determining the Dynamic Contact Law /
[ Doyle, J. F. ] / Experimental Mechanis   DOI   ScienceOn
4 고분자압전센서신호를 이용한 저속충격 탐지 해석모델의 개선 /
[ 김인걸;정석모 ] / 한국항공우주학회지   과학기술학회마을
5 웨이블릿 변환을 이용한 스마트 복합적층판의 충격 손상 검출 연구 /
[ 성대운;오정훈;김천곤;홍창선 ] / 한국복합재료학회지   과학기술학회마을
6 횡방향 충격을 받는 보의 초기 거동해석 및 충격력 복원에 관한 연구 /
[ 박형순 ] / 박사학위논문
7 Prediction of Low-Energy Impact Based on Piezoelectric Sensor Signals /
[ Kim, I.;Hahn, H. T. ] / ASME
8 저속충격을 받는 복합층판의 역함수 문제에 대한 실험적 상관관계 /
[ 김인걸;김준 ] / 한국복합재료학회지
9 /
[ Atochem Sensors Inc. ] / Technical Manual