Composites Research

  • 제34권5호
  • /
  • Pages.323-329
  • /
  • 2021
  • /
  • 2288-2103(pISSN)
  • /
  • 2288-2111(eISSN)
한국복합재료학회 (The Korean Society for Composite Materials)
권호 표지
DOI QR코드

DOI QR Code

복합재 접착 체결 구조의 접착 상태가 모드 I 균열 성장 특성에 미치는 영향에 대한 연구

A Study on the Effect of Adhesion Condition on the Mode I Crack Growth Characteristics of Adhesively Bonded Composites Joints

  • No, Hae-Ri (Department of Aerospace Engineering, Chungnam National University) ;
  • Jeon, Min-Hyeok (Department of Aerospace Engineering, Chungnam National University) ;
  • Cho, Huyn-Jun (Department of Aerospace Engineering, Chungnam National University) ;
  • Kim, In-Gul (Department of Aerospace Engineering, Chungnam National University) ;
  • Woo, Kyeong-Sik (School of Civil Engineering, Chungbuk National University) ;
  • Kim, Hwa-Su (Republic of Korea Air Force Aero Technology Research Institute) ;
  • Choi, Dong-Su (Republic of Korea Air Force Academy)
  • 투고 : 2021.09.30
  • 심사 : 2021.10.29
  • 발행 : 2021.11.05
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

본 논문에서는 불균일한 접착 상태를 가지는 복합재 접착 체결 시편에 대하여 모드 I 하중에서의 파괴 특성을 분석하였다. 이를 위하여 Double Cantilever Beam(DCB) 시험을 수행하였으며 모드 I 파괴 인성을 도출하였다. 불균일한 접착 상태를 갖는 시편의 경우 안정한 균열 성장 구간과 불안정한 균열 성장 구간이 나타남을 확인하였다. DCB 시험에서 구한 하중-변위 선도와 시편의 파손 단면을 통해 각 구간의 파괴 특성을 관찰하였다. 시험에서 측정된 균열 길이를 기준으로 세분화된 구간과 각 구간의 모드 I 파괴 인성을 이용하여 유한요소해석을 수행하였다. DCB 시험 결과와 유한요소해석 결과를 통해 불균일한 접착 상태를 가지는 시편의 파괴 거동을 모사할 수 있음을 확인하였다.

In this paper, the characteristics of fracture in mode I loading were analyzed for adhesively bonded joints with non-uniform adhesion. The Double Cantilever Beam test was performed and mode I fracture toughness was obtained. In the case of non-uniform adhesively bonded joints, the stable crack growth sections and unstable crack growth section were shown. The fracture characteristics of each section were observed through the load-displacement curve of the DCB test and the fracture surface of the specimen. Finite Element Analysis was performed at the section based on segmented section by crack length measured through the test and using the mode I fracture toughness of each section. Through DCB test results and finite element analysis results, it was confirmed that the fracture behavior of specimens with non-uniform adhesion can be simulated.

키워드

과제정보

본 연구는 공군 항공기술연구소 대외위탁 연구과제로 수행된 연구입니다.

참고문헌

  1. Kim, J.J., Seong, M.S., Kim, H.J., Cha, B.K., Kweon, J.H., and Choi, J.H., "An Experimental Study of Composite-to Aluminum Hybrid Single-lap Joints," Journal of the Korean Society for Aeronautical and Space Science, Vol. 36, No. 9, 2008, pp. 841-850. https://doi.org/10.5139/JKSAS.2008.36.9.841
  2. Kim, W.S., and Lee, J.J., "Interfacial Fracture Toughness Measurement of Composite/metal Bonding," Composites Research, Vol. 21, No. 4, 2008, pp. 7-14.
  3. ASTM D5528, Standard Test Method for Mode I Interlaminar Fracture Toughness of Unidirectional Fiber-Reinforced Polymer Matrix Composites, 2013.
  4. Mohapatra, P.C., Smith, L.V., and Street, N.S., "Effect of Bond Quality on Crack Growth Resistance of Adhesively Bonded Composite Joints under Static and Cyclic Loading," Proceeding of Society for the Advancement of Material and Process Engineering, Seattle, WA, North America, May 2017.
  5. Markatos, D.N., Tserpes, K.I., Rau, E., Markus, S., Ehrhart, B., and Pantelakis, S., "The Effects of Manufacturing-Induced and In-Service Related Bonding Quality Reduction on the Mode-I Fracture Toughness of Composite Bonded Joints for Aeronautical Use," Composites Part B: Engineering, Vol. 45, No. 1, 2013, pp. 556-564. https://doi.org/10.1016/j.compositesb.2012.05.052
  6. Sanchez, S., Coronado, P., Arguelles, A., and Vina, J.A., "Analyses of Different Adhesives on Pure Mode I and Mode II Delamination Growth of Composites Bonded Joints," Multidisciplinary Digital Publishing Institute Proceedings, Feb. 2018, p. 1419.
  7. Mohan, J., Ivankovic, A., and Murphy, N., "Mode I Fracture Toughness Co-cured and Secondary Bonded Composites Joints," International Journal of Adhesion and Adhesives, Vol. 51, 2014, pp. 13-22. https://doi.org/10.1016/j.ijadhadh.2014.02.008
  8. Quan, D., Urdaniz, J.L., Rouge, C., and Ivankovic, A., "The Enhancement of Adhesively-bonded Aerospace-grade Composite Joints Using Steel Fibres," Composite Structures, Vol. 198, 2018, pp. 11-18. https://doi.org/10.1016/j.compstruct.2018.04.071
  9. Floros, I.S., Tserpes, K.I., and Lobel, T., "Mode-I, Mode-II and Mixed-Mode I+II Fracture Behavior of Composite Bonded Joints: Experimental Characterization and Numerical Simulation," Composites Part B: Engineering, Vol. 78, No. 29, 2015, pp. 459-468. https://doi.org/10.1016/j.compositesb.2015.04.006
  10. Lee, B.E., Park, E.T., Ko, D.C., Kang, B.S., and Song, W.J., "Evaluation of Fracture Behavior of Adhesive Layer in Fiber Metal Laminates using Cohesive Zone Models," Composites Research, Vol. 29, No. 2, 2016, pp. 45-52. https://doi.org/10.7234/composres.2016.29.2.045
  11. Noorman, D.C., "Cohesive Zone Modelling in Adhesively Bonded Joints: Analysis on Crack Propagation in Adhesives and Adherends," Master Thesis, Delft University, Netherlands, 2014.
  12. ASTM D3039, Standard Test Method for Tensile Properties of Polymer Matrix Composite Materials, 2017.
  13. ASTM D3518, Standard Test Method for In-Plane Shear Response of Polymer Matrix Composite Materials by Tensile Test of a ±45° Laminate, 2018.
  14. ASTM D7905, Standard Test Method for Determination of the Mode II Interlaminar Fracture Toughness of Unidirectional Fiber-Reinforced Polymer Matrix Composites, 2019.