Relation between interfacial shear strength and tensile strength of carbon fiber/resin composite strands

Shioya, Masatoshi; Yasui, Shintaro; Takaku, Akira

doi:10.1163/156855498x00333

Cited by 21 publications

(10 citation statements)

References 6 publications

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“…The efficiency of the tensile strength cited from Ref. [28] is shown in Fig. 5b where the fibers are the same as those used in the present study, the matrix modulus was 3.0 GPa and the gage length for determining the average single- Figure 9.…”

Section: Fracture Mechanismmentioning

confidence: 95%

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Relation between interfacial shear strength and compressive strength of carbon fiber/epoxy resin composite strands

Kim¹,

Shioya²,

Nakatani³

2000

Composite Interfaces

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The mechanism with which the fiber-matrix interfacial strength exerts its influence on the compressive strength of fiber reinforced composites has been studied by measuring the axial compressive strength of carbon fiber/ epoxy resin unidirectional composite strands having different levels of interfacial shear strength. The composite strands are used for experiments in order to investigate the compressive strength which is not affected by the delamination taking place at a weak interlayer of the laminated composites. The interfacial strength is varied by applying various degrees of liquid-phase surface treatment to the fibers. The efficiency of the compressive strength of the fibers utilized in the strength of the composite strands is estimated by measuring the compressive strength of the single carbon filaments with a micro-compression test. The compressive strength of the composite strands does not increase monotonically with increasing interfacial shear strength but showes lower values at higher interfacial shear strengths. With increasing interfacial shear strength, the suppression of the interfacial failure in the misaligned fiber region increases the compressive strength, while at higher interfacial shear strengths, the enhancement of the crack sensitivity decreases the compressive strength.

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Section: Fracture Mechanismmentioning

confidence: 95%

“…The enhancement of the crack sensitivity also reduces the tensile strength of the composite strands [28]. The efficiency of the tensile strength cited from Ref.…”

Section: Fracture Mechanismmentioning

confidence: 99%

Relation between interfacial shear strength and compressive strength of carbon fiber/epoxy resin composite strands

Kim¹,

Shioya²,

Nakatani³

2000

Composite Interfaces

Self Cite

View full text Add to dashboard Cite

show abstract

“…The properties of the fiber-matrix-interface, tailored by the fiber's surface treatment, may have a high impact on the stress transfer between fiber and matrix and on the damage initiation, as concluded in the review by Jones [2]. This leads to the conclusion that the interface influences the effective properties of the composite (e.g., [3,4]).…”

Section: Introductionmentioning

confidence: 99%

Nonlinear-Elastic Orthotropic Material Modeling of an Epoxy-Based Polymer for Predicting the Material Behavior of Transversely Loaded Fiber-Reinforced Composites

Lüders

2020

J. Compos. Sci.

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Micromechanical analyses of transversely loaded fiber-reinforced composites are conducted to gain a better understanding of the damage behavior and to predict the composite behavior from known parameters of the fibers and the matrix. Currently, purely elastic material models for the epoxy-based polymeric matrix do not capture the nonlinearity and the tension/compression-asymmetry of the resin’s material behavior. In the present contribution, a purely elastic material model is presented that captures these effects. To this end, a nonlinear-elastic orthotropic material modeling is proposed. Using this matrix material model, finite element-based simulations are performed to predict the composite behavior under transverse tension, transverse compression and shear. Therefore, the composite’s cross-section is modeled by a representative volume element. To evaluate the matrix modeling approach, the simulation results are compared to experimental data and the prediction error is computed. Furthermore, the accuracy of the prediction is compared to that of selected literature models. Compared to both experimental and literature data, the proposed modeling approach gives a good prediction of the composite behavior under matrix-dominated load cases.

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“…Hence, it significantly influences the mechanical properties of the composite material. 3,4 A number of studies on interfacial properties have been reported. These studies usually focused on the electrochemical bonding aspects.…”

Section: Introductionmentioning

confidence: 99%

The influence of fiber surface profile and roughness to fiber–matrix interfacial properties

Putra

Budiman

Sambegoro

et al. 2019

Journal of Composite Materials

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This work investigates the influence of fiber surface profile and roughness to fiber–matrix interfacial properties. A series of the push-out test is performed using specimens with different fiber surface profile and roughness. Numerical simulation is then carried out by employing a finite element method to fit the experimental data. The model contains an indenter which pushes in a single fiber from the matrix, while the cohesive zone model is applied to represent the interface resulting in force–displacement curves. Our results suggest that continuous cavities formed in graphite-based fiber may not be beneficial to interfacial properties since it can accelerate a debonding process along with the interface. In contrast, scattered cavities on the fiber surface create strong mechanical locking, which increases the interfacial strength. These results broaden the understanding of the surface profile, which would shed light on a new perspective in designing composite structures.

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Relation between interfacial shear strength and tensile strength of carbon fiber/resin composite strands

Cited by 21 publications

References 6 publications

Relation between interfacial shear strength and compressive strength of carbon fiber/epoxy resin composite strands

Relation between interfacial shear strength and compressive strength of carbon fiber/epoxy resin composite strands

Nonlinear-Elastic Orthotropic Material Modeling of an Epoxy-Based Polymer for Predicting the Material Behavior of Transversely Loaded Fiber-Reinforced Composites

The influence of fiber surface profile and roughness to fiber–matrix interfacial properties

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