Effect of Bullet Shape and H/a Ratio on Ballistic Impact Behaviour of FRP Composite Plate: A Numerical Study

., Md. Muslim Ansari

doi:10.15623/ijret.2015.0425065

IJRET

2015

DOI: 10.15623/ijret.2015.0425065

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Effect of Bullet Shape and H/a Ratio on Ballistic Impact Behaviour of FRP Composite Plate: A Numerical Study

Md. Muslim Ansari .¹

Abstract: In this paper, the behaviour of FRP

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2022

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Cited by 2 publications

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Vakum Destekli Reçine İnfüzyon Kalıplama ile Üretilmiş Twaron®/Epoksi Lamine Kompozit Plakaların 9 mm Mermi Tehdidine Karşı Balistik Performansı Üzerine Sayısal Çalışma

Demircioğlu

Balıkoğlu

2022

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi

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This article presents the experiments on the ballistic effect of plates formed by stacked Twaron® fabrics between 10 and 16 layer numbers impregnated with epoxy resin by vacuum infusion method and the results of Autodyn-2D® simulations using an axisymmetric model. The ballistic impact resistance of the panels produced was determined according to the NIJ-STD-0108.01 standard. All panels were tested against 9 mm FMJ bullets at an average velocity of 390 m/s with the MP5 gun for armour application. The interaction of the plates with the bullet, the post-shot damage photographs, residual velocities of the bullet were compared with Autodyn-2D® simulations. Parametric study was performed in the analysis to determine the optimum bullet velocity, layer thickness and tensile failure strain. It was observed that the data obtained from the simulations were consistent with the experiments.

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Vakum Destekli Reçine İnfüzyon Kalıplama ile Üretilmiş Twaron®/Epoksi Lamine Kompozit Plakaların 9 mm Mermi Tehdidine Karşı Balistik Performansı Üzerine Sayısal Çalışma

Demircioğlu

Balıkoğlu

2022

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi

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Design, Analysis, and Modeling of Curved Photovoltaic Surfaces Using Composite Materials

Espitia-Mesa¹,

Hernández-Pedraza²,

Molina-Tamayo³

et al. 2022

TecnoL.

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Currently, the use of photovoltaic solar energy has increased considerably due to the development of new materials and the ease to produce them, which has significantly reduced its acquisition costs. Most commercial photovoltaic modules have a flat geometry and are manufactured using metal reinforcement plates and glass sheets, which limits their use in irregular surfaces such as roofs and facades (BIPV) and the transportation sector (VIPV). The purpose of this study is to analyze the design implications of curved photovoltaic surfaces using composite materials. Considering operation and maintenance requirements, the most suitable reinforcement and encapsulation materials are selected based on references and experimental tests. It was found that the maximum radius of curvature that a polycrystalline silicon cell with the dimensions of a SunPower C60 model can achieve is 6.51 m for a failure probability lower than 5 %, which allows us to define the maximum curvature that this photovoltaic surface can reach. Additionally, an analytical model of the reinforcement was implemented using macromechanical models in Matlab™, which was validated by the finite element method employing the composite materials module in Ansys®. Therefore, this paper presents a detailed analysis of the shear stresses between the layers and of the deformations generated in the curved solar panel reinforcement. Finally, under the operating conditions assumed here, carbon fiber presents the best structural behavior in the reinforcement material, while epoxy resin exhibits a better performance in the encapsulation material. These results can facilitate the manufacturing of curved photovoltaic surfaces.

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Effect of Bullet Shape and H/a Ratio on Ballistic Impact Behaviour of FRP Composite Plate: A Numerical Study

Abstract: In this paper, the behaviour of FRP

Cited by 2 publications

References 12 publications

Vakum Destekli Reçine İnfüzyon Kalıplama ile Üretilmiş Twaron®/Epoksi Lamine Kompozit Plakaların 9 mm Mermi Tehdidine Karşı Balistik Performansı Üzerine Sayısal Çalışma

Vakum Destekli Reçine İnfüzyon Kalıplama ile Üretilmiş Twaron®/Epoksi Lamine Kompozit Plakaların 9 mm Mermi Tehdidine Karşı Balistik Performansı Üzerine Sayısal Çalışma

Design, Analysis, and Modeling of Curved Photovoltaic Surfaces Using Composite Materials

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