On the mixed mode I/II/III translaminar fracture toughness of cotton/epoxy laminated composites

Zeinedini, Afshin; Moradi, Matin; Taghibeigi, H.; Jamali, Jamaloddin

doi:10.1016/j.tafmec.2020.102760

Cited by 17 publications

(6 citation statements)

References 35 publications

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“…Table 1 shows the mechanical properties of the PMMA sheet utilized in this study, for which testing was conducted in accordance with ASTM D638 and D732 standards. Numerous testing methods and specimens, such as incline edge crack asymmetric bending [ 3 ], compact tension shear [ 6 ], asymmetric four-point bending [ 22 ], semi-circular bending [ 23 ], Brazilian disc specimen [ 24 ], etc., are used to study mixed-mode I/II fracture toughness. In this study, the mixed-mode I/II of PMMA was studied using the inclined crack bending specimen based on previous research by Mingdong Wei [ 25 ] and M.R.M.…”

Section: Mixed-mode I/ii Fracture Toughnessmentioning

confidence: 99%

“…For the majority of engineering parts, the load pattern or direction is more likely to occur in a mixed direction than in just one direction. According to the nature of the load direction on that part, it must be studied in a mixed-mode fracture toughness; either it is studied in mixed-mode I/II [ 2 , 3 ], mixed-mode I/III [ 4 , 5 ], or mixed-mode II/III [ 6 , 7 ], with mixed-mode I/II loading being popularly studied in various research. The fracture toughness values under mixed-mode loading can be calculated under several methods such as actual testing, numerical method, etc.…”

Section: Introductionmentioning

confidence: 99%

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Improvement of Mixed-Mode I/II Fracture Toughness Modeling Prediction Performance by Using a Multi-Fidelity Surrogate Model Based on Fracture Criteria

et al. 2022

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Today, artificial intelligence plays a huge role in the mechanical engineering field for solving many complex problems and the problem with fracture mechanics is one of them. In fracture mechanics, artificial intelligence is used to predict crack behavior under various conditions such as mixed-mode loading. Many parameters are used for explaining the crack behavior under various conditions, but those parameters are obtained from destructive testing, in which usually, only one data point is obtained from each test. An artificial problem method requires a large amount of data to train the model to be able to learn crack behavior, which is a disadvantage of applying this method to fracture mechanics. To eliminate the disadvantage of the large amount of experiment data required for modeling, in this study, the small data obtained from the experiment along with data obtained from fracture criteria that were used for elementary prediction of mixed mode fracture toughness were used to create an artificial intelligence model. Data from the experiment was combined with fracture criteria data using the multi-fidelity surrogate model that is described in this study. The mixed mode I/II fracture toughness of the PMMA material was tested in order to primarily propose the data combination technique. After the modeling process, the prediction results indicated that the performance of a model in which the actual test data was combined with the data from the fracture criteria (multi-fidelity surrogate model) was more predictively effective compared to only actual data-based modeling.

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Section: Mixed-mode I/ii Fracture Toughnessmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improvement of Mixed-Mode I/II Fracture Toughness Modeling Prediction Performance by Using a Multi-Fidelity Surrogate Model Based on Fracture Criteria

et al. 2022

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“…Although attempts were made to improve it, including blending with high-toughness thermoplastic materials such composites cannot easily be recycled. [4][5][6][7][8] Due to the increase in electromagnetic (EM) waves generating electronic devices onboard aircraft, electromagnetic interference (EMI) shielding by surrounding devices is another challenge for commercial and military aircraft to safely work devices. [9][10][11] For stealth applications, a reduction in radar cross section (RCS), a measure of detectability by radar, is required.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, thermosets such as epoxy have another disadvantage of low fracture toughness due to their brittle nature caused by their cross‐linked molecular chain structure. Although attempts were made to improve it, including blending with high‐toughness thermoplastic materials such composites cannot easily be recycled 4–8 . Due to the increase in electromagnetic (EM) waves generating electronic devices onboard aircraft, electromagnetic interference (EMI) shielding by surrounding devices is another challenge for commercial and military aircraft to safely work devices 9–11 .…”

Section: Introductionmentioning

confidence: 99%

Mechanical and electromagnetic interference shielding properties of natural fiber reinforced polymer composite with carbon nanotubes addition

Singh,

Zafar,

Suman

et al. 2024

Polymer Composites

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Mechanical and electromagnetic interference (EMI) shielding properties are investigated for developed synthesized green composite. The varying content of kenaf fiber‐reinforced high‐density polyethylene (HDPE) composite has been fabricated using microwave‐assisted compression molding techniques with and without the addition of multi‐walled carbon nanotubes (MWCNTs). X band range has been used for EMI shielding characterization. Optimization for mechanical strength has been done using tensile test, impact test, and translaminar fracture toughness test. Fractography by scanning electron and optical microscopy concluded that interfacial adhesion between kenaf fiber and HDPE matrix and the degree of ductility of the matrix are primary governing factors for change in mechanical properties. The differential scanning calorimetry confirmed no change in the degree of crystallization of the matrix with the addition of MWCNTs. Composite with EMI shielding effect above 30 dB along with superior mechanical properties is obtained at 16% (v/v) kenaf fiber content with the addition of 5% (wt.) conductive MWCNTs for possible application in electronic equipment casing, overhead bin, or unmanned aerial vehicles.

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“…This type of failure, like the others, may be caused under different loading conditions. Based on the direction of loading, mode I, mode II, and mode III translaminar fracture or any combination of them may occur in the laminated composites [10]. Most of researchers have studied the translaminar fracture behavior of laminated composites under mode I loading condition [11][12][13][14][15][16].…”

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

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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.

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On the mixed mode I/II/III translaminar fracture toughness of cotton/epoxy laminated composites

Cited by 17 publications

References 35 publications

Improvement of Mixed-Mode I/II Fracture Toughness Modeling Prediction Performance by Using a Multi-Fidelity Surrogate Model Based on Fracture Criteria

Improvement of Mixed-Mode I/II Fracture Toughness Modeling Prediction Performance by Using a Multi-Fidelity Surrogate Model Based on Fracture Criteria

Mechanical and electromagnetic interference shielding properties of natural fiber reinforced polymer composite with carbon nanotubes addition

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

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