The effect of secondary nanofiller on mechanical properties and formulation optimization of <scp>HDPE</scp>/nanoclay/<scp>nanoCaCO<sub>3</sub></scp> hybrid nanocomposites using response surface methodology

Alavitabari, Seyedemad; Mohamadi, Mahboube; Javadi, Azizeh; Garmabi, Hamid

doi:10.1002/vnl.21783

Cited by 9 publications

(9 citation statements)

References 44 publications

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“…Semi-crystalline polymers such as HDPE have high tenacity under common conditions of use. However, they are sensitive to the notch made in the specimen, causing the material to harden [50,51].…”

Section: Mechanical Characterization Of A00 A40 A50 and A60 Compositesmentioning

confidence: 99%

Mechanical and ballistic characterization of high-density polyethylene composites reinforced with alumina and silicon carbide particles

et al. 2022

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This article explores the ballistic and mechanical performance of HDPE matrix composites reinforced with alumina and silicon carbide particles, to be used as lightweight body armor. After processing, the composites were evaluated by tensile tests, Izod impact, and Shore D hardness. In addition, depth of penetration (DOP) and energy absorption tests were performed with chronograph simulating .22 ammunition in the ballistic test. Samples A80 and A70 had the lowest DOP result (15.98 and 17.98 mm respectively) indicating that these samples had the best ballistic performance. Mechanical tests performed on samples A00, A40, A50, and A60 showed that the deformation and tensile strength were reduced with the addition of ceramic reinforcement. Impact resistance also decreased. Shore D hardness showed a considerable increase in hardness of A40, A50, and A60 compared to A00.

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Section: Mechanical Characterization Of A00 A40 A50 and A60 Compositesmentioning

confidence: 99%

Mechanical and ballistic characterization of high-density polyethylene composites reinforced with alumina and silicon carbide particles

et al. 2022

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“…The sections that follow represent the results and discussion of SEM images. MDPE is a semi-crystalline polymer with organized and tightly packed molecular chains, [43] and when stressed, the individual segments of the chains rotate and align in the direction of the maximum strain. Two forms of chains movement occur: (1) shear deformation, involving narrow bands of intense shear or broad bands of diffuse shear, and (2) crazing, involving the formation of planar arrays of fine voids (typically <1 μm diameter) normal to the tensile stress.…”

Section: Annealing Effect On Crack Growthmentioning

confidence: 99%

Modification of ultrasonic transducers to study crack propagation in vinyl polymers, supported by SEM technique

Barakat

El-Wakil

Hasan

2022

Vinyl Additive Technology

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Detecting defects in various industrial products remains a challenging task in the industry. Researchers are constantly working to improve detection techniques and tools for various defects, particularly cracks. Many industrial structures suffer from cracks. The selection of a suitable technique and/or tool is based upon the tested structures and the accuracy of the technique and/or tool. The work's novelty is the development of a fully accurate, simple, and safe ultrasonic tool for precisely scanning cracks. A pen-shaped cone was added to the ultrasonic transducers to improve their performance. Different crosshead speeds and annealing techniques were used to cause cracks on medium density polyethylene (MDPE) and poly-methyl-methacrylate (PMMA) polymer plates with specific dimensions. Cone reduced the front diameter of the transducers from 12 to 2 mm (cone tip diameter). It improved the transducers by giving them new properties such as a small near field, a collimated beam, high sensitivity, and high wave reflection. The modified transducers tracked the cracks at discrete sequential sites, where the ultrasonic velocity was measured to determine the crack speed, critical crack speed, dynamic stress intensity factor, and crack branching phenomenon. Additionally, ultrasonic attenuation was measured in order to accurately determine crack growth behavior, the crack's neck zone, and the crack growth dependency on both plate thickness and annealing. Scanning electron microscope (SEM) images revealed crack propagation in polymer plates. The results of ultrasonic testing and SEM evaluations were consistent. This guaranteed that the modified transducers could scan cracks accurately.

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“…The optimization approach for delamination research of nanocomposites begins with mathematical modeling. As a result, researchers use regression analysis (RA), response surface methodology (RSM), artificial neural networks (ANN), ANN and combined compromise solution, a hybrid module of the combined compromise solution, and the principle component analysis method to try to distinguish mathematical models (Alavitabari, Mohamadi, Javadi, & Garmabi, 2021;Kumar & Verma, 2021a, 2021b, 2021c. The obtained mathematical model also corresponds to the predicted objective function of the optimization problem for nanocomposites delamination study.…”

Section: Fd=dmax/dmentioning

confidence: 99%

Optimization of Delamination and Thrust Force in the Drilling Process of Nanocomposites

ÖZTÜRK¹

2022

European Journal of Science and Technology

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A new design optimization technique is presented to improve the analytical performance of the drilling process of graphene oxide nanocomposites. A detailed study was conducted for modeling-design-optimization of the drilling process using multiple nonlinear neuroregression analyses for this goal. The data were slected from a literature study for this objective. The accuracy of the predictions of the nine potential functional structures presented for modeling the data was tested using a hybrid neuro-regression-based technique. Model selections to determine the objective functions were made by controlling the R 2 values, limit values, and statistical results, respectively. The selected models were used in the optimization studies of delamination and thrust force values with four different optimization algorithms. The results show that the R 2 training and R 2 training-adjust values give good results in the nine models as objective functions. However, R 2 testing values and statistical calculations were distinctive among all models. Furthermore, when the optimization results of the third-order polynomial and logarithmic models for both responses were compared to the reference study's results, it was observed that the current results were more closer to the test results.

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The effect of secondary nanofiller on mechanical properties and formulation optimization of HDPE/nanoclay/nanoCaCO₃ hybrid nanocomposites using response surface methodology

Cited by 9 publications

References 44 publications

Mechanical and ballistic characterization of high-density polyethylene composites reinforced with alumina and silicon carbide particles

Mechanical and ballistic characterization of high-density polyethylene composites reinforced with alumina and silicon carbide particles

Modification of ultrasonic transducers to study crack propagation in vinyl polymers, supported by SEM technique

Optimization of Delamination and Thrust Force in the Drilling Process of Nanocomposites

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The effect of secondary nanofiller on mechanical properties and formulation optimization of HDPE/nanoclay/nanoCaCO3 hybrid nanocomposites using response surface methodology

Cited by 9 publications

References 44 publications

Mechanical and ballistic characterization of high-density polyethylene composites reinforced with alumina and silicon carbide particles

Mechanical and ballistic characterization of high-density polyethylene composites reinforced with alumina and silicon carbide particles

Modification of ultrasonic transducers to study crack propagation in vinyl polymers, supported by SEM technique

Optimization of Delamination and Thrust Force in the Drilling Process of Nanocomposites

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Product

Resources

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The effect of secondary nanofiller on mechanical properties and formulation optimization of HDPE/nanoclay/nanoCaCO₃ hybrid nanocomposites using response surface methodology