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Başlık: Quasi-static tensile behavior and damage of carbon/epoxy composite reinforced with 3D non-crimp orthogonal woven fabric
Yazarlar: Bogdanovich, Alexander E.
Lomov, Stepan V.
Verpoest, Ignaas
Uludağ Üniversitesi/Gemlik Asım Kocabıyık Meslek Yüksekokulu.
Karahan, Mehmet
AAK-4298-2021
8649952500
Anahtar kelimeler: Materials science
Mechanics
Mechanical properties
3D woven composite
Tensile loading
Elastic properties
Strength
Damage initiation and development
Failure
Weave
Carbon fibers
Elastic moduli
Mechanical properties
Optical data processing
Optical microscopy
Reinforcement
Stress-strain curves
Tensile strength
Tensile stress
Textiles
Three dimensional computer graphics
3D woven composites
Damage initiation
Elastic properties
Strength
Tensile loading
Weaving
Yayın Tarihi: 1-Ağu-2013
Yayıncı: Elsevier
Atıf: Bogdanovich, A. E. vd. "Quasi-static tensile behavior and damage of carbon/epoxy composite reinforced with 3D non-crimp orthogonal woven fabric". Mechanic of Metarials, 62, 14-31.
Özet: This paper presents a comprehensive experimental study and detailed mechanistic interpretations of the tensile behavior of one representative 3D non-crimp orthogonal woven (3DNCOW) carbon/epoxy composite. The composite is tested under uniaxial in-plane tensile loading in the warp, fill and +/- 45 degrees bias directions. An "S-shape" nonlinearity observed in the stress-strain curves is explained by the concurrent contributions of inherent carbon fiber stiffening ("non-Hookean behavior"), fiber straightening, and gradual damage accumulation. Several approaches to the determination of a single-value Young's modulus from a significantly nonlinear stress-strain curve are discussed and the best approach recommended. Also, issues related to the experimental determination of effective Poisson's ratios for this class of composites are discussed, and their possible resolution suggested. The observed experimental values of the warp- and fill-directional tensile strengths are much higher than those typically obtained for 3D interlock weave carbon/epoxy composites while the nonlinear material behavior observed for the +/- 45 degrees-directional tensile loading is in a qualitative agreement with the earlier results for other textile composites. Results of the damage initiation and progression, monitoried by means of acoustic emission, full-field strain optical measurements, X-rays and optical microscopy, are illustrated and discussed in detail. The damage modes at different stages of the increasing tensile loading are analyzed, and the principal progressive damage mechanisms identified, including the characteristic crack patterns developed at each damage stage. It is concluded that significant damage initiation of the present material occurs in the same strain range as in traditional cross-ply laminates, while respective strain range for other previously studied carbon/epoxy textile composites is significantly lower. Overall the revealed advantages in stiffness, strength and progressive damage behavior of the studied composite are mainly attributed to the absence of crimp and only minimal fiber waviness in the reinforcing 3DNCOW preform.
URI: https://doi.org/10.1016/j.mechmat.2013.03.005
http://hdl.handle.net/11452/29004
ISSN: 0167-6636
1872-7743
Koleksiyonlarda Görünür:Scopus
Web of Science

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