Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Impact Damage of Honeycomb Sandwich Antenna Structures

통신 안테나용 허니콤 샌드위치 구조물의 충격 손상에 관한 연구

  • Kim, Cha-Gyeom (Dept. of Mechanical Engineering, Pohang University of Science and Technology) ;
  • Lee, Ra-Mi (Pohang University of Science and Technology) ;
  • Park, Hyeon-Cheol (Dept. of Mechanical Engineering, Pohang University of Science and Technology) ;
  • Hwang, Un-Bong (Dept. of Mechanical Engineering, Pohang University of Science and Technology) ;
  • Park, Wi-Sang (Pohang University of Science and Technology)
  • 김차겸 (포항공과대학교 기계공학과) ;
  • 이라미 (포항공과대학교 전자컴퓨터공학부) ;
  • 박현철 (포항공과대학교 기계공학과) ;
  • 황운봉 (포항공과대학교 기계공학과) ;
  • 박위상 (포항공과대학교 전자컴퓨터공학부)
  • Published : 2002.02.01
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Abstract

The impact response and damage of CLAS panel was investigated experimentally. The facesheet material used was RO4003 woven-glass hydrocarbon/ceramic and the core material was Nomex honeycomb with a cell size of 3.2mm and a density of 96 kg/㎥. The shield plane used was RO4003 and 2024-T3 aluminum. Static indentation and impact test was conducted to characterize the type and extent of the damage observed in two CLAS panels, and the performance of antenna used in a wireless LAN system. Correlation of peak contact force, residual indentation and the delamination area shows impact damage of the panel with an aluminum shield plane is larger than that of the panel with RO4003 shield plane, although the former is more penetration resistant. The damage was observed by naked eye, ultrasonic inspection and cross sectioning. The shape and size of delamination was estimated by ultrasonic inspection, and the area of delamination linearly increases as impact energy increases. The performance of impact damaged antenna was estimated by measuring return loss and radiation pattern. It was revealed that the performance of antenna was related to the impact damage and there was a threshold that the performance of antenna fell as impact energy level changed. The threshold was between the impact energies of 1.5J and 1.75J.

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References

  1. Tuss, J., Lockyer, A., Alt K, Uidrich, F., Kinslow, R., Kudva, J. and Goetz, A., 1996, 'Conformal Load-bearing Antenna Structure,' AIAA Paper 96-1415-CP, pp. 836-843
  2. Hopkins, M. A., Tuss, J. A., Lockyer A. J., Alt K., Kinslow, R., Kudva, J. N., 1997, 'Smart Skin Conformal Load-bearing Antenna and Other Smart Structures Developments,' AIAA Paper 97-1163, pp. 521-530
  3. Lockyer, A. J., Alt, K. H., Kudva, J. N., Kinslow, R. W. and Goetz, A., 1997, 'Conformal Load-bearing Antenna Structure(CLAS): Initiative for multiple military and commercial applications,' SPIE Smart Structures and Materials, Vol. 3046, pp. 182-196 https://doi.org/10.1117/12.276607
  4. Lockyer, A. J., Alt, K. H., Coughlin D. P., Durham, M. D., Kudva, J. N. Goetz, A. C. and Tuss, J., 1999, 'Design and Development of a Conformal Load-bearing Smart-Skin Antenna: overview of the AFRL SMart Skin Structures Technology Demonstration(S3TD),' SPIE Smart Structures and Materials, Vol. 3674, pp. 410-424 https://doi.org/10.1117/12.351578
  5. Kassapoglou, C., Jonas, P.J. and Abbott, R., 1998, 'Compressive Strength of Composite Sandwich Panels After Impact Damage: An Experimental and Analytical Study,' Journal of Composites Technolgy & Research, Vol. 10, pp. 65-73 https://doi.org/10.1520/CTR10131J
  6. Kim, Chun-Gon, and Jun, Eui-Jin, , 1992, 'Impact Resistance of Composite Laminated Sandwich Plates,' Jorunal of Composite Materials, Vol. 26, No. 15, pp. 2247-2261 https://doi.org/10.1177/002199839202601504
  7. Akay, M. and Hanna, R., 1990, 'A Compoarison of Honeycomb-core and Foam-core Carbon-fiber/Epoxy Sandwich Panels,' Composites, Vol. 21, No. 4, pp. 325-331 https://doi.org/10.1016/0010-4361(90)90347-Y
  8. Nemes, J. A. and Simmonds, K. E., 1992, 'Low-Velocity Impact Response of Foam-Core Sandwich Composites,' Journal of Composite Materials, Vol. 26, No. 4, pp. 25-30 https://doi.org/10.1177/002199839202600403
  9. Tsang, P. H. Wilson, 1994, 'Impact Resistance and Damage Tolerance of Composite Sandwich Panels,' Ph. D Dissertation, Department of Aeronautics and Astronautics, Massachusetts Institute of Technology
  10. Bernard, Michael L. and Lagace, Paul A., 1989, 'Impact Resistance of Composite Sandwich Plates,' Journal of Reinforced Plastics and Composites, Vol. 8, pp. 432-445 https://doi.org/10.1177/073168448900800502
  11. Anderson, T. and Madenci, E., 2000, 'Experimental Investigation of Low-velocity Impact Characteristics of Sandwich Composites,' Composites Structures, Vol. 50, pp. 239-247 https://doi.org/10.1016/S0263-8223(00)00098-2
  12. Stutzman, Warren L., and Thiele, Gray A., 1998, Antenna Theory and Design, John Willy & Sons. Inc., 2nd ed
  13. Pozar, David M., 1998, Microwave Engineering, John Willy & Sons, Inc., 2nd ed