DOI QR코드

DOI QR Code

Damage of scarf-repaired composite laminates subjected to low-velocity impacts

  • Cheng, Xiaoquan (School of Aeronautical Science and Engineering, Beihang University) ;
  • Zhao, Wenyi (School of Aeronautical Science and Engineering, Beihang University) ;
  • Liu, Shufeng (School of Aeronautical Science and Engineering, Beihang University) ;
  • Xu, Yunyan (School of Aeronautical Science and Engineering, Beihang University) ;
  • Bao, Jianwen (Beijing Institute of Aeronautical Materials)
  • 투고 : 2014.02.02
  • 심사 : 2014.08.04
  • 발행 : 2014.08.25

초록

The damage characters of scarf repaired composite laminates subjected to low-velocity impact with various energy levels at different locations are studied experimentally. The results are compared with those of the original laminates which have no initial damage and don't need repair. The impact load-time history of the specimens, the velocity-time curves of the impactor, the post impact compressive strength of the specimens and the C-scan photographs of the damaged regions are obtained. The delamination threshold load and damage character of the specimen section at impact point are also studied. The results have shown that the impact response of a repaired composite laminate is sensitive to the location of the impact. The impact load and the delamination threshold load have shown different characters for specimens with different impact locations. The debonding characters of the adhesive and compressive strength after impact of the specimens are also influenced by impact locations.

키워드

참고문헌

  1. Abrate, S. (1991), "Impact on laminated composite materials", Appl. Mech. Rev., 44(4), 155-190. https://doi.org/10.1115/1.3119500
  2. Abrate, S. (1994), "Impact on laminated composites: recent advances", Appl. Mech. Rev., 47(11), 517-544. https://doi.org/10.1115/1.3111065
  3. ASTM D7136/D7136M-07 (2007), "Measuring the damage resistance of a fiber-reinforced polymer matrix composite to a drop-weight impact event", American Society for Testing Materials.
  4. ASTM D7137/D7137M-07 (2007), "Compressive residual strength properties of damaged polymer matrix composite plates", American Society for Testing Materials.
  5. Baker, A.A. (1999), "Scarf repairs to highly strained graphite/epoxy structure", Int. J. Adhes. Adhes., 19(2), 161-171. https://doi.org/10.1016/S0143-7496(98)00031-1
  6. Cheng, X.Q., Kou, C.H. and Li, Z.N. (1998), "Compression of composite honeycomb core sandwich panels after low velocity impact", J. Beijing Univ. Aeron. Astron., 24(5), 551-554.
  7. Cheng, X.Q., Zhang, Z.L. and Wu, X.R. (2002), "Post-impact compressive strength of small composite laminate specimens", Acta Materiae Compositae Sinica, 19(6), 8-12.
  8. Cheng, X.Q., Ali, A.M. and Li, Z.N. (2009), "Residual strength of stitched laminates after low velocity impact", J. Reinf. Plast. Compos., 28(14), 1670-1688.
  9. Falzon, B.G. (2009), "Impact damage and repair of composite structures", Aeronaut. J., 113(1145), 431-445. https://doi.org/10.1017/S0001924000003109
  10. Harman, A.B. (2006), "Optimisation and improvement of the design of scarf repairs to aircraft", Ph.D. Dissertation, University of New South Wales, Sydney, Australia.
  11. Harman, A.B. and Rider, A.N. (2011), "Impact damage tolerance of composite repairs to highly-loaded, high temperature composite structures", Compos. Part A - Appl. S. Manuf., 42(10), 1321-1334. https://doi.org/10.1016/j.compositesa.2011.05.015
  12. Harman, A.B. and Wang, C.H. (2007), "Damage tolerance and impact resistance of composite scarf joints", Proceedings of the 16th International Conference on Composite Materials (ICCM-16), Kyoto, Japan, July.
  13. Herszberg, I., Feih, S., Gunnion, A.J. and Li, H.C. (2007), "Impact damage tolerance of tension loaded bonded scarf repairs to CFRP laminates", Proceedings of the 16th International Conference on Composite Materials (ICCM-16), Tokyo, Japan, July.
  14. Hoshi, H., Nakano, K. and Iwahori, Y. (2007), "Study on repair of CFRP laminates for aircraft structures", Proceedings of the 16th International Conference on Composite Materials (ICCM-16), Tokyo, Japan, July.
  15. Kumar, S.B., Sivashanker, S., Bag, A. and Sridhar, I. (2005), "Failure of aerospace composite scarf-joints subjected to uniaxial compression", Mater. Sci. Eng.: A, 412(1), 117-122. https://doi.org/10.1016/j.msea.2005.08.033
  16. Kumar, S.B., Sridhar, I., Sivashanker, S., Osiyemi, S.O. and Bag, A. (2006), "Tensile failure of adhesively bonded CFRP composite scarf joints", Mater. Sci. Eng.: B, 132(1), 113-120. https://doi.org/10.1016/j.mseb.2006.02.046
  17. Schoeppner, G.A. and Abrate, S. (2000), "Delamination threshold loads for low velocity impact on composite laminates", Compos. Part A - Appl. S. Manuf., 31(9), 903-915. https://doi.org/10.1016/S1359-835X(00)00061-0
  18. Takahashi, I., Ito, Y., Takeda, S., Iwahori, Y., Takatsubo, J. and Takeda, N. (2007), "Impact damage detection on scarf-repaired composites using Lamb wave sensing", Proceedings of the 16th International Conference on Materials (ICCM-16), Kyoto, Japan, July.
  19. Wang, C.H. and Gunnion, A.J. (2008), "On the design methodology of scarf repairs to composite laminates", Compos. Sci. Technol., 68(1), 35-46. https://doi.org/10.1016/j.compscitech.2007.05.045

피인용 문헌

  1. Polypropylene fiber reinforced concrete plates under fluid impact. Part I: experiments vol.60, pp.2, 2016, https://doi.org/10.12989/sem.2016.60.2.211
  2. Low-velocity impact performance and effect factor analysis of scarf-repaired composite laminates vol.111, 2018, https://doi.org/10.1016/j.ijimpeng.2017.09.004
  3. Study on impact performances of scarf-repaired carbon fiber reinforced polymer laminates vol.34, pp.1, 2015, https://doi.org/10.1177/0731684414562465
  4. Effects of stacking sequence and rotation angle of patch on low velocity impact performance of scarf repaired laminates vol.133, 2018, https://doi.org/10.1016/j.compositesb.2017.09.020
  5. Low velocity impact response and dynamic stresses of thick high order laminated composite truncated sandwich conical shell based on a new TDOF spring-mass-damper model considering structural damping vol.26, pp.6, 2014, https://doi.org/10.12989/scs.2018.26.6.771
  6. Tensile After Impact Test of Scarf-Repaired Composite Laminates vol.44, pp.9, 2014, https://doi.org/10.1007/s13369-019-03857-z