International Journal of Vehicle Structures and Systems

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Inter-Laminar Strength of Bonded Composite Lap Joints with Selective Stitching through the Thickness


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1 Infosys Limited, Electronic City, Hosur Road, Bangalore, India
 

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In bonded composite lap joints, inter-laminar strength is critical to prevent the delamination. In this paper, the phenomenon of progressive delamination in lap joints is simulated in ABAQUS software using stress based composite failure model. It is observed that in all the joints, failure initiation is due to high inter-laminar stresses at the edges of the lap joint. Use of through the thickness stitching results in a significant improvement in inter-laminar strength in joints. These joints are further analyzed for “selective stitching” wherein the stitching is restricted to the failure regions. The results show that selective stitching is able to provide failure strengths close to that of fully stitched model.

Keywords

Inter-Laminar Strength, Composite Stitching, Composite Lap Joints, ABAQUS, USDFLD.
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  • L. Tong, A.P. Mouritz and M.K. Bannister. 2002. 3D Fiber Reinforced Polymer Composites, Elsevier Science.

  • M. Karahan, Y. Ulcay, N. Karahan and A. Kuş. 2013. Influence of stitching parameters on tensile strength of Aramid/Vinyl Ester composites, Materials Science, 19(1). http://dx.doi.org/10.5755/j01.ms.19.1.3829.

  • N. Zhao, H. Rödel, C. Herzberg, S.L. Gao and S. Krzywinski. 2009. Stitched glass/PP composite, Part I: Tensile and impact properties, Composites Part A: Applied Science and Manufacturing, 40(5), 635-643 http://dx.doi.org/10.1016/j.compositesa.2009.02.019.

  • F. Blas and I. Fernández. 2001. Mechanical characterisation of carbon/epoxy composite materials manufactured by resin film infusion method with stitching reinforcement, Low Cost Composite Structures.

  • Composite Materials Handbook. 2002. Polymer Matrix Composites Materials Usage, Design, and Analysis, MIL-HDBK-17-3F.

  • H.T. Hahn 2002. Design, Manufacturing and Performance of Stitched Stiffened Composite Panels with and without Impact Damage, U.S. Department of Transportation, Federal Aviation Administration.

  • A. Aktas, P. Potluri and I. Porat. 2009. Multi-needle stitched composites for improved damage tolerance, Proc. 17th Int. Conf. Composite Materials, Edinburgh, Scotland.

  • L.E. Stanley and D.O. Adams. 2001. Development and Evaluation of Stitched Sandwich Panels, NASA/CR-2001-211025.

  • F. Pang and C.H. Wang. 2000. A predictive creep model for un-stitched and stitched woven composites, Composites Science and Technology, 60, 255-261. http://dx.doi.org/10.1016/S0266-3538(99)00117-7.[

  • V. Carvelli, V. Koissin, J. Kustermans, S.V. Lomov, V.N. Tomaselli, B.V.D. Broucke, I. Verpoest and V. Witzel. 2009. Progressive damage in stitched composites: Static tensile tests and tension-tension fatigue, Proc. 17th Int. Conf. Composite Materials, Edinburgh, Scotland.

  • Y. Tan, G. Wu, S.S. Suh, J.M. Yang, H.T. Hahn. 2008. Damage tolerance and durability of selectively stitched stiffened composite structures, Int. J. Fatigue, 30(3), 483-492.

  • W. Trabelsi, L. Michel and R. Othomene. 2010. Effects of stitching on delamination of satin weave carbon-epoxy laminates under mode I, mode II and mixed-mode I/II loadings, Applied Composite Materials, 17(6), 575-595 http://dx.doi.org/10.1007/s10443-010-9128-0.

  • E.H. Glaessgen and I.S. Raju.1999. Three-dimensional effects in the plate element analysis of stitched textile composites, Proc. 40th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conf. and Exhibit, St. Louis, USA.. http://dx.doi.org/10.2514/6.1999-1416.

  • T. Rys, L. Chen and B. Sankar. 2010. Mixed mode fracture toughness of laminated stitched composites, J. Reinforced Plastics and Composites, 29(3), 422-430. http://dx.doi.org/10.1177/0731684408099407.

  • M. Rathinasabapathy and S.B. Biggers. 2004. Finite element simulation of through-thickness stitching as a means for delamination growth control, Proc. ABAQUS Users’ Conf., Boston, Massachusetts.

  • B.K. Fink, A.M. Monib, and J.W. Gillespie Jr. 2001. Damage Tolerance of Thick-Section Composites Subjected to Ballistic Impact, ARL-TR-2477.

  • ABAQUS V6.11 Documentation.

  • S.W. Tsai. 1992. Theory of Composites Design, Stanford University.

  • J.E. Mark. 2007. Physical Properties of Polymers Handbook, Springer.000. A predictive creep model for un-stitched and stitched woven composites, Composites Science and Technology, 60, 255-261. http://dx.doi.org/10.1016/S0266-3538(99)00117-7.


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  • Inter-Laminar Strength of Bonded Composite Lap Joints with Selective Stitching through the Thickness

Abstract Views: 253  |  PDF Views: 196

Authors

R. H. Hemanth
Infosys Limited, Electronic City, Hosur Road, Bangalore, India
G. V. V. Ravi Kumar
Infosys Limited, Electronic City, Hosur Road, Bangalore, India

Abstract


In bonded composite lap joints, inter-laminar strength is critical to prevent the delamination. In this paper, the phenomenon of progressive delamination in lap joints is simulated in ABAQUS software using stress based composite failure model. It is observed that in all the joints, failure initiation is due to high inter-laminar stresses at the edges of the lap joint. Use of through the thickness stitching results in a significant improvement in inter-laminar strength in joints. These joints are further analyzed for “selective stitching” wherein the stitching is restricted to the failure regions. The results show that selective stitching is able to provide failure strengths close to that of fully stitched model.

Keywords


Inter-Laminar Strength, Composite Stitching, Composite Lap Joints, ABAQUS, USDFLD.

References





DOI: https://doi.org/10.4273/ijvss.8.2.02