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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.1
- 수록면
- 154 - 157 (4page)
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초록· 키워드
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Non-destructive testing methods of composite materials are very important for improving materialreliability and safety. AE measurement is based on the detection of microscopic surface movements from stress wavesin a material during the fracture process. The examination of AE is a useful tool for the sensitive detection andlocation of active damage in polymer and composite materials. FBG (Fiber Bragg Grating) sensors have attractedmuch interest owing to the important advantages of optical fiber sensing. Compared to conventional electronicsensors, fiber-optical sensors are known for their high resolution and high accuracy. Furthermore, they offerimportant advantages such as immunity to electromagnetic interference, and electrically passive operation. In thispaper, the crack detection capability of AE (Acoustic Emission) measurement was compared with that of an FBGsensor under tensile testing and buckling test of composite materials. The AE signals of the PVDF sensor weremeasured and an AE signal analyzer, which had a low pass filter and a resonance filter, was designed and fabricated.
Also, the wavelength variation of the FBG sensor was measured and its strain was calculated. Calculated strains werecompared with those determined by finite element analysis.
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참고문헌 (7)
참고문헌 신청
Asher, R.C / 1997 / Ultrasonic Sensors for Chemical and Process Plant / Institute of Physics Pub
Bathias, C / 1992 / Application of X-ray Tomographyto the Nondestructive Testing of High-performance PolymerComposites, Damage Detection in Composite Materials / ASTM,STP 1128 : 35 ~ 5
Chen, J.Y / 1999 / Fiber-optic andUltrasonic Measurements for In-situ Cure Monitoring ofGraphite/epoxy Composites / Journal of Composite Materials 33 (20) : 1860 ~ 1881
Dunyak, T.J / 1992 / Examinationof Selected NDE Techniques for Ceramic Composite Components,Damage Detection in Composite Materials / ASTM, STP1128 : 367 ~ 24
Reinhart, J.J / 1987 / ASM International, Vol. 1 : 479 ~ 495
Bathias, C / 1992 / Application of X-ray Tomographyto the Nondestructive Testing of High-performance PolymerComposites, Damage Detection in Composite Materials / ASTM,STP 1128 : 35 ~ 5
Chen, J.Y / 1999 / Fiber-optic andUltrasonic Measurements for In-situ Cure Monitoring ofGraphite/epoxy Composites / Journal of Composite Materials 33 (20) : 1860 ~ 1881
Dunyak, T.J / 1992 / Examinationof Selected NDE Techniques for Ceramic Composite Components,Damage Detection in Composite Materials / ASTM, STP1128 : 367 ~ 24
Reinhart, J.J / 1987 / ASM International, Vol. 1 : 479 ~ 495
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