Browse > Article
http://dx.doi.org/10.7234/kscm.2011.24.6.049

Study on the Damage Characteristics Under the High-Velocity Impact of Composite Laminates Using Various Sensor Signals  

Cho, Sang-Gyu (충남대학교 항공우주공학과 대학원)
Kim, In-Gul (충남대학교 항공우주공학과)
Lee, Seok-Je (충남대학교 항공우주공학과 대학원)
You, Won-Young (충남대학교 항공우주공학과 대학원)
Publication Information
Composites Research / v.24, no.6, 2011 , pp. 49-55 More about this Journal
Abstract
The use of advanced composite materials in main structures of military and civil aircraft has been increased rapidly because of their considerable metals in high specific strength and stiffness. However, the mechanical properties of composite materials may severely degrade in the presence of damage. Especially, the high-velocity impact such as a hailstorm, and a small piece of tire or stone during high taxing, can cause considerable damage to the structures and sub-system in spite of a very small mass. However, it is not easy to detect the damage in composite plates using a single sensor or any conventional methods. In this paper, the PVDF sensors and AE sensors were used for monitoring high-velocity impact damage initiation and propagation in composite laminates. The WT(wavelet transform) is used to decompose the sensor signals. In the PVDF sensor and AE sensor signal analysis, amounts of high-frequency signals are increased when the impact energy is increased. PVDF sensor and AE sensor signal appeared similar results. This study shows how various sensing techniques can be used to characterize high-velocity impact damage of advanced composite laminates.
Keywords
high velocity impact; composite laminate; wavelet transform; AE sensor; PVDF sensor;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Abrate, S., "Impact on lamina composite materials," Applied Mechanics Review, Vol. 44, No. 4, 1991, pp. 155-190.   DOI
2 Ruiz, C., and Harding, J., Modelling impact of composite structures using small specimens, Woodhead Publishing Ltd., 2000.
3 Abrate, S., Impact on composite structures, Cambridge University Press, 1998.
4 Okafor, A.C., Otieno, A.W., Dutta, A., and Rao, V.S., "Detection and characterization of high-velocity impact damage in advanced composite plates using multi-sensing techniques," Composite Structures, Vol. 54, 2011, pp. 289-297.
5 Jones, R.T., Sirkis, J.S., Friebele, E.J., and Kersey, A.D., "Location and magnitude of impact detection in composite plates using neural networks," Proc. SPIE, No. 2444, 1996, pp. 469-480.
6 김진원, 고분자 압전센서를 이용한 복합적층판의 고속충격 탐지, 석사학위논문, 충남대학교, 2006.
7 이종오, 지현섭, 주노회, 음향방출(AE)시험의 원리와 응용, 재료연구소, 2009, pp. 156-164.
8 박찬익, 고분자 압전(PVDF) 센서 신호를 이용한 복합재 적층판의 저속충격 손상 탐지 연구, 박사학위논문, 충남대학교, 2003.
9 성대운, 오정훈, 김천곤, 홍창선, "웨이블릿 변환을 이용한 스마트 복합적층판의 충격 손상 검출 연구," 한국복합재료 학회지, 제13권 제1호, 2000, pp. 40-49.   과학기술학회마을