Experimental Study on Impact Tensile Property of Glass Fiber

Taniguchi, Norihiko; ARAO, Yoshihiko; Hirayama, Norio; Nakamura, Kōichi; Kawada, Hiroyuki

doi:10.6089/jscm.38.137

Cited by 5 publications

(8 citation statements)

References 10 publications

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“…A similar observation by utilizing a tension split Hopkinson pressure bar and a high-speed tensile-testing machine over the strain rate from 8.33 × 10 −4 to 500 s −1 was reported by Taniguchi et al. 28,29 They observed that by increasing the strain rate from the quasi-static condition to 50 s −1 , the ultimate strength increased significantly; while beyond this strain rate, the increasing rate was declined. Nevertheless, the increasing ratio of the strength from the quasi-static condition to the strain rate of 250 s −1 is about 60%.…”

Section: Introductionsupporting

confidence: 76%

“…By having material constants (ψ and ξ) and Young's modulus ( E ), the mechanical behavior of glass fibers at different strain rates can be predicted. However, experimental data 26–29 showed that Young's modulus of glass fibers is a rate-dependent parameter and increased by increasing the strain rate. To account for the rate dependency, equation (4) needs some modifications to include a strain rate-dependent elastic modulus instead of a constant one.…”

Section: The Strain-rate Dependent Mechanical Properties Of Glass Fibersmentioning

confidence: 99%

“…The glass fibers are the most commonly used reinforcing fibers in the fabrication of polymer matrix composites. In this section, to investigate the influence of the strain rate on the stress-strain behavior of the glass fiber as a rate-sensitive material, [26][27][28][29] using the modified Maxwell model in combination with semi-empirical equations, a new viscoelastic constitutive equation was introduced. To complete this part of the model, the simplified Cowper-Symonds material model was combined with the present viscoelastic constitutive equation to predict the strain-rate dependent strength of glass fibers.…”

Section: The Strain-rate Dependent Mechanical Properties Of Glass Fibersmentioning

confidence: 99%

“…Experimental data [26][27][28][29] showed that the strain rate significantly affects the overall mechanical behavior of glass fibers. In the present study, based on the empirical evidence, [26][27][28][29] the Maxwell model was utilized to model the mechanical behavior of glass fibers. In the Maxwell model, a spring and a damper in series were used to model the elastic and viscoelastic behavior of the material, respectively.…”

Section: The Stiffness Of the Glass Fiber As A Function Of The Strainmentioning

confidence: 99%

See 3 more Smart Citations

A novel model to predict the stiffness and strength of unidirectional glass/epoxy composites at different strain rates

Khademi

Shokrieh

Haghighi

2020

Journal of Composite Materials

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In the present research, a novel rate-dependent micromechanical model was presented to predict the stiffness and strength of unidirectional glass/epoxy composites. To predict the strain-rate dependent stress–strain behavior of glass fibers, using the Maxwell model with the aid of semi-empirical relations, a new viscoelastic constitutive model was proposed. Moreover, to predict the strain-rate dependent ultimate strength of brittle glass fibers, the elasto-plastic strain-rate dependent Cowper-Symonds material model was simplified by deleting the plastic terms. The strain-rate dependent mechanical properties of the polymer were also investigated by using the modified Goldberg model. Then, by modifying the Mori-Tanaka micromechanical model, a rate dependent micromechanical model was developed to predict the effective elastic properties (stiffness and strength) of unidirectional fibrous composites at arbitrary strain rates. The present model was called the strain-rate dependent Mori-Tanaka micromechanical model. As inputs, the present model just needs the viscoelastic and viscoplastic properties of fibers and polymer. Therefore, the present model reduces the necessary experimental data to predict the rate-dependent mechanical properties of unidirectional composites. For verification of the present model, the results were compared with experimental data and very good consistency in predicting the rate-dependent behavior of unidirectional composites was observed.

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Section: Introductionsupporting

confidence: 76%

Section: The Strain-rate Dependent Mechanical Properties Of Glass Fibersmentioning

confidence: 99%

Section: The Strain-rate Dependent Mechanical Properties Of Glass Fibersmentioning

confidence: 99%

Section: The Stiffness Of the Glass Fiber As A Function Of The Strainmentioning

confidence: 99%

See 2 more Smart Citations

A novel model to predict the stiffness and strength of unidirectional glass/epoxy composites at different strain rates

Khademi

Shokrieh

Haghighi

2020

Journal of Composite Materials

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“…The strength of fiber bundle could be successfully obtained by this experiment. A more comprehensive experimental study of the tensile strength of glass and carbon fibers was reported by Taniguchi et al [20]. Figure 11 shows a comparison of stress-strain curves for a low and a high strain rate.…”

Section: Specimens and Experimental Proceduresmentioning

confidence: 95%

Strain-rate dependence of the tensile strength of glass fibers

Arao

Taniguchi²,

Hirayama

et al. 2012

J Mater Sci

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It is well known that the strength of glass fibers increases with increasing strain rate. Consequently, impact strength of glass fiber is competitive with that of carbon fiber. This strengthening phenomenon is well recognized for bulk glass. Strain-rate dependence of the strength for bulk glass was described by considering slow crack growth in glass. The analytical model that considered the slow crack growth of glass is proposed to predict the strength of glass fibers. The proposed model considered the stress corrosion limit and a constant crack velocity region. Calculations showed almost same results with the previous model, however, some differences were confirmed. To discuss the validity of the analysis, tensile tests of E-glass fiber bundles were conducted at various strain rates. It was observed that the fracture behaviors differ with the strain rates. Experimental results showed that the strength of E-glass fibers increased with increasing strain rate. Furthermore, we confirmed that the analytical results were in good agreement with the experimental results. The strain-rate dependence of the strength of glass fibers was successfully predicted by considering the slow crack growth in glass.

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Strain rate effects on the mechanical behavior of single-lap glass/carbon nanofiber/epoxy composite bolted joints

Shamaei-Kashani

Shokrieh

2020

Journal of Composite Materials

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In the present research, effects of applying strain rate on the mechanical behavior of single-lap glass/CNF/epoxy composite bolted joints including, damage initiation bearing stress, 2% offset bearing strength, ultimate bearing strength, bearing chord stiffness, ultimate bearing strain, and energy absorption were studied. To this end, a comprehensive experimental program was conducted. The protruding head bolt was used, the clearance was considered to be near fit and a finger-tight bolt condition was applied to all joints. The dimensions of joints were chosen to promote the bearing failure mode based on the ASTM standard. Four types of single-lap bolted joints (SLJs) with lay-ups of [–45/0/45/90]s and [90/–452/45]s with and without CNFs were tested at strain rates in the range of 0.0048 s−1 to 0.89 s−1. Unlike the available experimental results, the results obtained by the present experiments showed that the strain rate has a significant effect on all the above-mentioned mechanical parameters of SLJs. Also, it was shown that employing CNFs improved the mechanical parameters of SLJs under quasi-static and dynamic strain rates.

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Experimental Study on Impact Tensile Property of Glass Fiber

Cited by 5 publications

References 10 publications

A novel model to predict the stiffness and strength of unidirectional glass/epoxy composites at different strain rates

A novel model to predict the stiffness and strength of unidirectional glass/epoxy composites at different strain rates

Strain-rate dependence of the tensile strength of glass fibers

Strain rate effects on the mechanical behavior of single-lap glass/carbon nanofiber/epoxy composite bolted joints

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