Nonlinear Deformation Behavior of New Braided Composites with Six-axis Yarn Orientations

Journal Article · Wed May 04 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3589648· OSTI ID:21516694

Ahn, H -C; Yu, W -R ^[1]; Guo, Z ^[2]

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1. Department of Materials Science and Engineering, Seoul National University, 599 Gwanangno, Gwanak-gu, Seoul 151-742 (Korea, Republic of)
2. School of Civil Engineering and Geosciences, Newcastle University, Newcastle upon Tyne, NE1 7RU UK (United Kingdom)

The braiding technology is one of fabrication methods that can produce three-dimensional fiber preforms. Braided composites have many advantages over other two-dimensional composites such as no delamination, high impact and fatigue properties, near-net shape preform, etc. Due to the undulated yarns in the braided preforms, however, their axial stiffness is lower than that of uni-directional or woven composites. To improve the axial stiffness, the longitudinal axial yarns were already introduced along with the braiding axis (five-axis braiding technology). In this study, we developed a new braided structure using six-axis braiding technology. In addition to braiding and longitudinal axial yarns, transverse axial yarn was introduced. New braided composites, so called six-axis braiding composites, were manufactured using ultra high molecular weight polyethylene and epoxy resin and their mechanical properties were characterized. To investigate the mechanical performance of these braided composites according to their manufacturing conditions, a numerical analysis was performed using their unit-cell modeling and finite element analysis. In the analysis the nonlinear deformation behavior will be included.

• OSTI ID: 21516694
• Journal Information: AIP Conference Proceedings, Vol. 1353, Issue 1; Conference: ESAFORM 2011: 14. international ESAFORM conference on material forming, Belfast, Northern Ireland (United Kingdom), 27-29 Apr 2011; Other Information: DOI: 10.1063/1.3589648; (c) 2011 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

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36 MATERIALS SCIENCE
COMPOSITE MATERIALS
DEFORMATION
EPOXIDES
FABRICATION
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FIBERS
FINITE ELEMENT METHOD
FLEXIBILITY
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MOLECULAR WEIGHT
NONLINEAR PROBLEMS
NUMERICAL ANALYSIS
ORIENTATION
POLYETHYLENES
SIMULATION
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TWO-DIMENSIONAL CALCULATIONS
CALCULATION METHODS
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MATHEMATICS
MECHANICAL PROPERTIES
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TENSILE PROPERTIES