Numerical and experimental investigations of low velocity impact on glass fiber-reinforced polyamide

Mars, Jamel; Chebbi, E.; Wali, Mondher; Dammak, Fakhreddine

doi:10.1016/j.compositesb.2018.04.012

Cited by 47 publications

(15 citation statements)

References 32 publications

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“…A numerical study provided the necessary process modeling data to give insight into the injection molding process. Previous reports include using experimental data to predict rheological properties [ 37 ], compression molding [ 38 ], and aging behavior [ 39 ] of neat PA66, as well as non-linear damage model [ 40 ] and low-velocity impact behavior [ 41 ] of glass fiber reinforced PA66. However, to the best of our knowledge, this is the first study to link numerical data to experimental work for investigating the injection molding behavior of GNPs in the PA66 matrix as well as their effect of orientation on the mechanical and rheological properties of PA66/GNP composites.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of Flow and Alignment Behavior of Waste Tire-Derived Graphene Nanoplatelets in PA66 Matrix during Melt-Mixing and Injection

Dericiler

Sadeghi

Yağcı³

et al. 2021

Polymers

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Homogeneous dispersion of graphene into thermoplastic polymer matrices during melt-mixing is still challenging due to its agglomeration and weak interfacial interactions with the selected polymer matrix. In this study, an ideal dispersion of graphene within the PA66 matrix was achieved under high shear rates by thermokinetic mixing. The flow direction of graphene was monitored by the developed numerical methodology with a combination of its rheological behaviors. Graphene nanoplatelets (GNP) produced from waste-tire by upcycling and recycling techniques having high oxygen surface functional groups were used to increase the compatibility with PA66 chains. This study revealed that GNP addition increased the crystallization temperature of nanocomposites since it acted as both a nucleating and reinforcing agent. Tensile strength and modulus of PA66 nanocomposites were improved at 30% and 42%, respectively, by the addition of 0.3 wt% GNP. Flexural strength and modulus were reached at 20% and 43%, respectively. In addition, the flow model, which simulates the injection molding process of PA66 resin with different GNP loadings considering the rheological behavior and alignment characteristics of GNP, served as a tool to describe the mechanical performance of these developed GNP based nanocomposites.

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Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of Flow and Alignment Behavior of Waste Tire-Derived Graphene Nanoplatelets in PA66 Matrix during Melt-Mixing and Injection

Dericiler

Sadeghi

Yağcı³

et al. 2021

Polymers

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“…Ignoring the effect of wires, the whole structure consisted of three parts: the cover board, the piezoelectric units and the base board. For simplification, the material of the cover and the base board was assumed as having isotropic linear elasticity [14,35] and the element type of these two parts was C3D8R (three-dimensional reduced integrated solid element with eight nodes). The material parameters are shown in Table 2 [36].…”

Section: Fabrication Of Sensing System Experiments and Simulationmentioning

confidence: 99%

Development of a Novel Piezoelectric Sensing System for Pavement Dynamic Load Identification

Zhao

Wang

Zhao

et al. 2019

Sensors

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In order to control the adverse effect of vehicles overloading infrastructure and traffic safety, weight-in-motion (WIM)-related research has drawn growing attention. To address the high cost of current piezoelectric sensors in installation and maintenance, a study on developing a low-cost piezoceramic sensing system is presented in this paper. The proposed system features distributed monitoring and integrated packaging, for calculating vehicle’s dynamic load and its wheel position. Results from the laboratory tests show that the total output of the sensing system increases linearly with the increase of the peak load when the loading amplitude is 5–25 kN (equivalent to the half-axis load of 20–100 kN); when the loading frequency is between 15 Hz and 19 Hz (equivalent to a speed of 17.8–23.2 km/h), the total output of the system fluctuates around a value of 1.305 V. Combined with finite-element simulation, the system can locate load lateral position with a resolution of 120 mm. Due to the protection packaging, the peak load transferred to the sensing units is approximately 4.36% of the applied peak load. The study indicates the proposed system can provide a promising low-cost, reliable and practical alternative for current WIM systems.

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“…Recently, fiber‐reinforced composite has attracted widespread attention in the commercial and engineering fields due to many advantages such as corrosion resistance, low density, easy processing, recyclability, and low cost 1,2 . Polyamide (PA) becomes the most widely applied thermoplastics, considering to its advantages in corrosion resistance, high potential of integration, self‐lubricating and high toughness 3‐5 .…”

Section: Introductionmentioning

confidence: 99%

Effect of series explosion effects on the fiber length, fiber dispersion and structure properties in glass fiber reinforced polyamide 66

Guo

Wang

Zhang

et al. 2020

Polymers for Advanced Techs

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Nowadays, glass fiber (GF) reinforced polyamide 66 (PA66) composites have attracted strong interests in commercial and engineering applications due to many advantages, such as corrosion resistance, high potential of integration, self‐lubricating, and high toughness. However, it is very difficult for traditional plastic molding equipment to concurrently obtain the increase of fiber retention length and the improvement of fiber dispersion during the PA66/GF composites manufacturing, which greatly limit the widespread application of such composites. An innovative twin eccentric rotor volume pulsating plasticizing transportation equipment (TERE) based on series explosion effects, is applied to prepare PA66/GF composites at different rotor speeds and fiber loadings. Inside the PA66/GF30 composite prepared by TERE, the fibers are evenly dispersed in polymer matrix and the average fiber length increases by 3.2 times when compared to that of twin‐screw plasticizing transportation equipment (TSE). The Charpy impact strength of PA66/GF composites prepared by TERE is nearly twice that of TSE at all fiber contents. The fatigue properties, thermal oxygen aging properties, and creep properties of the TERE composites exhibit better effects than the TSE composites, indicating that the TERE can ensure longer fiber length and better dispersion effect simultaneously.

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Numerical and experimental investigations of low velocity impact on glass fiber-reinforced polyamide

Cited by 47 publications

References 32 publications

Experimental and Numerical Investigation of Flow and Alignment Behavior of Waste Tire-Derived Graphene Nanoplatelets in PA66 Matrix during Melt-Mixing and Injection

Experimental and Numerical Investigation of Flow and Alignment Behavior of Waste Tire-Derived Graphene Nanoplatelets in PA66 Matrix during Melt-Mixing and Injection

Development of a Novel Piezoelectric Sensing System for Pavement Dynamic Load Identification

Effect of series explosion effects on the fiber length, fiber dispersion and structure properties in glass fiber reinforced polyamide 66

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