The Effects of Temperature Change on the Bending Strength of CF/PEEK Laminates after Impact

온도변화가 CF/PEEK 적층재의 충격 후 굽힘강도에 미치는 영향

  • 양인영 (조선대학교 기계정보공학과) ;
  • 정종안 (송원대학 자동차과) ;
  • 나승우 (순천제일대학 차량기계학부)
  • Published : 2003.06.01

Abstract

In this paper, when CF/PEEK laminates for high efficiency space structure are subjected to FOD(Foreign Object Damage), the effects of temperature change on the impact damages(interlaminar separation and transverse crack) of CF/PEEK laminates and the relationship between residual lift and impact damages are experimentally investigated. Composite laminates used in this experiment are CF/PEEK orthotropic laminated plates, which have two-interlaces [$0^{\circ}_4/90^{\circ}_8/0^{\circ}_4$]. A steel ball launched by the air gun collides against CF/PEEK laminates to generate impact damages. And then CF/PEEK specimens with impact damages are observed by a scanning acoustic microscope under room and high temperatures. In this experimental results, various relations are experimentally observed including the delamination area vs. temperature change, the bending strength vs. impact energy and the residual bending strength vs. impact damage of CF/PEEK laminates.

Keywords

impact damage;high temperature environment;foreign object damage;transverse crack;delamination;impact energy;residual bending strength

References

  1. 나승우, 임광희, 양인영, 2002. '초음파 탐독자의 분극성에 따른 CFRP 복합적층판 평가에 관한 연구,' 한국산업안전학회논문집, 제17권 제1호, pp. 39-44, 2002
  2. Sarah. M., Bishop, 'The Mechanical Performance and Impact Behaviour of Carbon Fiber Reinforced PEEK,' Composite Structures, Vol.3, pp. 295- 318, 1988 https://doi.org/10.1016/0263-8223(85)90059-5
  3. Annual Book of ASTM Standards, 1988, 'D790M-86 Standard Method for Flexual Properties of Unreinforced Plastics and Electrical Insulating Matrial(Metric),' pp. 290-298
  4. 坂元 勝治, 伊藤康宏ら, '航技硏 STOL 實驗機用 耐熱複合材の選定, 日本宇宙航空學誌, 第 3 卷, 第 388 號, pp.162-167,1982
  5. 新素材編篆委員會, 新素材 HandBook, 丸善, pp. 45,1988.
  6. In-Young Yang, Adachi, Matsumoto, 'Impact Damage in CFRP Laminatws under High Temperature' 日本機槭 學會論文集, 第60卷, 第571號, , pp. 841 -845, 1994
  7. 橫田 英,平原 誠, "複盒材料を適用した民間旅客 機の水平尾翼構造," 日本航空宇宙學會誌, 第34 卷. 第394號, pp.608-618.1986
  8. W.J. Canywell and J .Morton, 1985, 'Detection of Impact Damage in CFRP Laminates,' Composite Structures, Vol.3, pp. 241-257, 1985 https://doi.org/10.1016/0263-8223(85)90056-X
  9. 林毅.福田武人ら.'ICCM-V 報告'. 日本複合村料學會誌., 第11卷, 第6號, pp.22,1985.