An Analytical Study on Sliding Mode Strength at the Bonded Interface Depending on the Inclined Angle of Unidirectional CFRP Inclined Double Cantilever with Laminated Structure

  • Authors

    • Jae-Woong Park
    • Jae-Ung Cho
    https://doi.org/10.14419/ijet.v7i3.24.22810
  • Notched tensile specimen, Material, Mechanical characteristic, Maximum load, Durability
  • Background/Objectives: CFRP is getting a great deal of attention with its next-generation lightweight materials.  Weight lightening can be greatly improved by designing the structure using the method of bonding lightweight materials.

    Methods/Statistical analysis: This study was based on BS (British standard) 7991 for mode II (Sliding mode).  BS 7991 is a basic research method for identifying the basic elements of CZM(Cohesive zone method). In the mode II as sliding mode of the inclined double cantilever beam, the effects on the materials and the mechanical properties shall be identified when the sliding load working at the bonded interface appears.

    Findings: Unidirectional CFRP shall be designed in accordance with quasi-isotropic laminate in order for its elastic stiffness to be designed similarly at all the coordination directions. Therefore, the laminate structure used in this study was designed to be [0 / ± 603]s. This is because the adhesion force acting on the bonded interface varies according to the progress of the failure when the interfacial failure occurs in the mode II as sliding mode of the inclined double cantilever. Quasi-isotropic laminate structure has an advantage of not setting differently elastic stiffness depending on the coordination in all the directions. The analysis condition of a restraint has been applied to one of the inclined double cantilevers with remote displacement excluding the rotation direction. The freedom of rotation direction along with forced displacement of sliding direction has been given to remote displacement in the other cantilever. Forced displacement speed was set at 3 mm/min. Given the free direction of rotation in both cantilevers, the inclined double cantilever has been ruptured, minimizing the interference between the elements.

    Improvements/Applications: In this research, a database for the application of lightweight materials and the bonding method, which are the design elements for lightweight structure has been constructed.

     

     

  • References

    1. [1] Blackman, B. R.K., Hadavinia,H., Kinloch, A. J., Paraschi,M.,& Williams,J. G.. (2003).The Calculation of Adhesive Fracture Energies in Mode I: Revisiting the Tapered Double Cantilever Beam (TDCB) Test. Engineering Fracture Mechanics, 70(2), 132-141.

      [2] Giorgi,M. De., Carofalo,A., Dattoma,V., Nobile,R.,&Palano,F.. (2010). Aluminum Foams Structural Modelling. Computers & Structures, 88(1-2),25-35.

      [3] Shin,K. B.,&Koo,D. H.. (2004). A Study on the Evaluation of the Failure for Carbody Structures Made of Laminated Fiber-reinforced Composite Materials Using Total Laminate Approach. Korean Society for Composite Materials, 17(1),18-28.

      [4] Jung,J. W., Kim,S. H., Park,J. K., &Lee,W. I.. (2011). Research on the development of the properties of PLA composites for automatic interior parts. Korean Society for Composite Materials, 24(3),1-5.

      [5] Hashemi,S., Kinloch,A. J.,&Williams,J. G.. (1990). The Analysis of Interlaminar Fracture in Uniaxial Fibre-polymer Composites. Proc. R. Soc. Lond, 427(1872),173-199.

      [6] Mohamed,M., Anandan,S., Huo,Z., Birman,V., Volz,J., &Chandrashekhara,K.. (2015). Manufacturing and characterization of polyurethane based sandwich composite structures. Composite Structures, 123,169-179.

      [7] Boang,S. O., Kim,K. S., Kim,S. H., Song,S. G., &Cho,J. U.. (2011). Study on Compression test of Aluminum foam and honeycomb sandwich composites. Journal of the Korea Academia-Industrial cooperation society, 12(9),3802-3807.

      [8] Paul,A.,& Ramamurty,U.. (2000). Strain Rate Sensitivity of a Closed-cell Aluminum Foam. Materials Science and Engineering: A, 281(1-2),1-7.

      [9] Lee, J. H.,& Cho, J. U. (2016). Evaluation and Verification on Material strength of specimen with the notches at both sides. Journal of Korean Society of Mechanical Technology, 18(5),759-764.

      [10] Bao, C.,&Cai,L.. (2011). Investigation on compliance rotation correction for compact tensile specimen in unloading compliance method. ActaMechanica SolidaSinica, 24(2),144-152.

      [11] Katnam, K. B., Comer, A. J., Stanley, W. F., Buggy, M.,& Young, T. M..(2012). Investigating tensile behaviour of toughened epoxy paste adhesives using circumferentially notched cylindrical bulk specimens. International Journal of Adhesion & Adhesives, 37,3-10.

      [12] Marzi,S., Biel,A.,& Stigh,U.. (2011). On experimental methods to investigate the effect of layer thickness on the fracture behavior of adhesively bonded joints. International Journal of Adhesion and Adhesives, 31(3),840-850.

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    Park, J.-W., & Cho, J.-U. (2018). An Analytical Study on Sliding Mode Strength at the Bonded Interface Depending on the Inclined Angle of Unidirectional CFRP Inclined Double Cantilever with Laminated Structure. International Journal of Engineering & Technology, 7(3.24), 541-544. https://doi.org/10.14419/ijet.v7i3.24.22810