ISSN 2288-2103 (Print)
ISSN 2288-2111 (Online)
 
 
 
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Abstract

Composites Research. 2019 32(2): 102-107
The Journal of the Korean Society for Composite Materials
    
 
Analysis on Stitched Mode I Specimen Using Spring Elements
Jonathan Tapullima, Hyung Woo Sim, Jin Hwe Kweon, Jin Ho Choi
Research Center for Aircraft Parts Technology, School of Mechanical and Aerospace Engineering, Gyeongsang National University
 
 
Analysis on Stitched Mode I Specimen Using Spring Elements
Jonathan Tapullima, Hyung Woo Sim, Jin Hwe Kweon, Jin Ho Choi
Research Center for Aircraft Parts Technology, School of Mechanical and Aerospace Engineering, Gyeongsang National University
 

Several studies related to reinforce composites structures in the through thickness direction have been developed along the years. As follows, in this study a new reinforced process is proposed based on previous experimental results using a novel stitching process in T-joints and one-stitched specimens. It was established the need to perform more analysis under standard test methods to obtain a better understanding. FEM analysis were compared after performed mode I interlaminar fracture toughness test, using different stitching patterns to analyze the through thickness strength with reference laminates without stitching. The stitching patterns were defined in 2 2 and 3 3, where the upper and lower head of the non-continuous stitching process (I-Fiber) has proven to influence in a higher through thickness strength of the laminate. In order to design the numerical model, cohesive parameters were required to define the surface to surface bonding elements using the cohesive zone method (CZM) and simulate the crack opening behavior from the double cantilever beam (DCB) test.
 
Key words : I-fiber, Stitching, DCB (Double Cantilever Beam), CZM (Cohesive Zone Method), Interlaminar Fracture Toughness
߽ɴܾ : I-fiber, Stitching, DCB (Double Cantilever Beam), CZM (Cohesive Zone Method), Interlaminar Fracture Toughness
 
 
  
 
 
 

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