Study of translaminar fracture toughness of unidirectional flax/epoxy composite

Saadati, Yousef; Lebrun, Gilbert; Châtelain, Jean-François; Beauchamp, Yves

doi:10.1016/j.jcomc.2020.100008

Cited by 9 publications

(9 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This observation is confirmed with results obtained by Ref. [ 17 ]. On the other hand, smooth specimen and MC specimen are failed through the loaded holes instead of the middle of cross-section, as illustrated in Figure 8 b.…”

Section: Resultssupporting

confidence: 93%

“…This debonding and matrix damage grows; finally, the fibers are damaged in the upper and lower part of the specimen. From Figure 10 , it can be seen that the damage of matrix and fiber are beginning from the pre-crack tip and is growing in the fiber direction parallel to the applied load that confirms with [ 17 , 42 ]. From Figure 9 and Figure 10 , the Hanshin model can simulate the progressive damage of smooth and TTC ASTM D3039 specimens.…”

Section: Resultssupporting

confidence: 60%

“…However, it rendered less accurate results for extremely orthotropic lay-ups. In the unidirectional fiber polymer composite under pure mode I, according to ASTM E1922, Saadati et al [ 17 ] found that crack propagation started from the notch tip and followed the fiber direction. He et al [ 18 ] demonstrated that brittle matrix could increase fracture work which reduced notch sensitivity.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An Assessment of ASTM E1922 for Measuring the Translaminar Fracture Toughness of Laminated Polymer Matrix Composite Materials

et al. 2021

View full text Add to dashboard Cite

The main objective of this work is to predict the exact value of the fracture toughness (KQ) of fiber-reinforced polymer (FRP). The drawback of the American Society for Testing Materials (ASTM) E1922 specimen is the lack of intact fibers behind the crack-tip as in the real case, i.e., through-thickness cracked (TTC) specimen. The novelty of this research is to overcome this deficiency by suggesting unprecedented cracked specimens, i.e., matrix cracked (MC) specimens. This MC exists in the matrix (epoxy) without cutting the glass fibers behind the crack-tip in the unidirectional laminated composite. Two different cracked specimen geometries according to ASTM E1922 and ASTM D3039 were tested. 3-D FEA was adopted to predict the damage failure and geometry correction factor of cracked specimens. The results of the TTC ASTM E1922 specimen showed that the crack initiated perpendicular to the fiber direction up to 1 mm. Failure then occurred due to crack propagation parallel to the fiber direction, i.e., notch insensitivity. As expected, the KQ of the MC ASTM D3039 specimen is higher than that of the TTC ASTM D3039 specimen. The KQ of the MC specimen with two layers is about 1.3 times that of the MC specimen with one layer.

show abstract

Section: Resultssupporting

confidence: 93%

Section: Resultssupporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Assessment of ASTM E1922 for Measuring the Translaminar Fracture Toughness of Laminated Polymer Matrix Composite Materials

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The results revealed that the translaminar fracture toughness increased slightly subjected to the tensile loading with the change of temperature, while under compressive loading, the temperature has a strong effect on the translaminar fracture toughness. In a study, Saadati et al [14] studied the translaminar fracture behavior of ax/epoxy composite. These researchers obtained the mode I translaminar fracture toughness of ax/epoxy laminated composites under compressive and tensile loading states.…”

Section: Introductionmentioning

confidence: 99%

Effect of temperature on the mixed mode I/II translaminar fracture of laminated composites reinforced with natural fibers

Zeinedini,

Hassan

2024

Preprint

View full text Add to dashboard Cite

In recent years, laminated composites reinforced with natural fibers have extensively used in the various industries. One of the most important failure modes of laminated composite materials is translaminar fracture under different loading conditions. In this research, the effect of temperature on the translaminar critical strain energy release rate (CSERR) of the composites reinforced with cotton fibers was investigated. The cotton/epoxy samples were placed at different temperature conditions of 30, 0, and − 30°C. The translaminar CSERR values of cotton/epoxy laminated composites were obtained under pure mode I, mixed mode I/II with two different loading angles, and pure mode II loading conditions. To calculate the translaminar CSERR based on experimental results, numerical modeling was also performed. Besides, a modified version of Mixed Mode Fracture Envelope criterion was proposed to predict the mixed mode I/II translaminar fracture behavior of the cotton/epoxy laminated composites at the mentioned temperatures. The results showed that lowering the temperature has a great impact on the translaminar CSERR. It was also concluded that the change in the temperature had the greatest effect on the value of the mode I translaminar CSERR. Moreover, as the temperature decreased from 30 to 0 and − 30°C, the value of the mode I translaminar CSERR decreased around 80 and 90%, respectively.

show abstract

“…Natural fibers are gaining prominence as a viable alternative to synthetic fibers. This may be seen in the amount of study being done to locate the appropriate material to use for reinforcing instead of synthetic fibers [ 1 , 2 , 3 , 4 , 5 , 6 ]. As the natural fibers have high stiffness and strength, when they are added to the polymer matrix, the tensile properties of the composites are significantly improved.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Effect of Parameters on Fracture Toughness of Hemp Fiber Reinforced Hybrid Composites Using the ANOVA Method

et al. 2021

View full text Add to dashboard Cite

In today's world, global warming has become a concern. To overcome this, we need to reduce the carbon footprints caused by the production of materials. Much of the time, this is equivalent to the same amount of CO2 emissions per tonne of production. This is a serious concern and needs to be overcome by identifying alternative materials to have as minimal a carbon footprint as possible. In this context, hemp fiber is by far the best natural fiber when compared to its peers. As per the survey conducted by the Nova institute, hemp has CO2 emissions of only 360 Kg/tonne, whereas jute has CO2 emissions of 550 Kg/tonne, kenaf 420 Kg/tonne, and flax 350 Kg/tonne. This paper presents an experimental study of the fracture toughness of hemp-reinforced hybrid composites (HRHC). The effect of the parameters on the fracture toughness behavior of HRHC is studied using the Taguchi technique. It uses different filler combinations with hemp fiber and epoxy. Hemp fiber is used as the reinforcement, epoxy resin is used as a matrix, and banana fiber, coconut shell powder, and sawdust are used as fillers. The experimental plan is prepared using an orthogonal array and analyzed using Minitab software. The obtained results were analyzed using ANOVA and main effects plots. It was observed that the fracture toughness increases with a decrease in thickness. The fracture toughness is affected by the fiber content in the range of 25–35% and is also affected by the filler materials.

show abstract

Study of translaminar fracture toughness of unidirectional flax/epoxy composite

Cited by 9 publications

References 54 publications

An Assessment of ASTM E1922 for Measuring the Translaminar Fracture Toughness of Laminated Polymer Matrix Composite Materials

An Assessment of ASTM E1922 for Measuring the Translaminar Fracture Toughness of Laminated Polymer Matrix Composite Materials

Effect of temperature on the mixed mode I/II translaminar fracture of laminated composites reinforced with natural fibers

Analysis of the Effect of Parameters on Fracture Toughness of Hemp Fiber Reinforced Hybrid Composites Using the ANOVA Method

Contact Info

Product

Resources

About