Effect of Unidirectional and Woven Fibers on Impact Properties of Epoxy

Ahmed, Payman Sahbah; Fadhil, Basim M.; Mohamed, Ava Ali Kamal

doi:10.19026/rjaset.12.2321

Cited by 6 publications

(3 citation statements)

References 3 publications

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“…Upon projectile impact, from the front face of glass a compressive-transverse wave travels inside the glass which causes fragmentation of glass as shown in Plate 6(a). Composite layers caused the creation of the compressive component of the wave to reflect as a tensile wave (Da Luz et al , 2015) in addition to the strength and nature of the woven carbon and glass which led to resisting the ballistic wave from two directions (Ahmed, 2016) and (Ahmed et al , 2016). This contributes to an effective fragmentation of the brittle glass (Da Luz et al , 2015).…”

Section: Resultsmentioning

confidence: 99%

“…Then the projectile will reach the layers of the composite; these layers will cause a delay in the projectile for a longer time and will enhance the ballistic resistance by resisting the projectile penetration (Rahbek and Johnsen, 2019) because of the woven nature of the used fiber plus the high strength of carbon and glass fiber where it can be seen in Figure 2 that the glass fiber will get high internal energy followed by carbon fiber (Ahmed et al , 2016).…”

Section: Resultsmentioning

confidence: 99%

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Experimental and numerical investigation of hybrid armor against a ballistic impact

Ahmed

Fadhil

Mshir

et al. 2021

MMMS

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PurposeThe main challenge in preparing body armor is achieving a high protection level by using lightweight materials with minimum cost.Design/methodology/approachIn this study, a three-hybrid multilayered armor system is prepared for protection against a ballistic impact wave. These armor systems consist of glass or ceramic tile as a front layer followed by three intermediate layers made of woven fiber reinforced polymer composites and a back layer made of either aluminum or polypropylene.FindingsAll armor systems were successful in impeding the projectile from perforating, that is materials selection played an important role in stopping the ballistic impact wave. Almost an identical ballistic behavior was recorded between the experimental and numerical simulation by using ANSYS AUTODYN which means that the simulation could be used in advance to reduce the time required for practical experiments and the cost of using materials in experimental tests will be lessened. The effect of projectile geometry also had been studied, and it showed a noticeable role in changing ballistic behavior.Originality/valueThe originality of this research is in using carbon and glass fiber which are woven together in addition to adding polypropylene layers in armor preparation.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Experimental and numerical investigation of hybrid armor against a ballistic impact

Ahmed

Fadhil

Mshir

et al. 2021

MMMS

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“…They reported that the impact force, the deformation of the composites and the impact energy were different for the various types of carbon reinforcement. The results presented by Ahmed et al [28] showed the differences between the impact response of epoxy composites that were reinforced with either carbon or glass fibers.…”

Section: Introductionmentioning

confidence: 99%

Low Velocity Impact Response and Tensile Strength of Epoxy Composites with Different Reinforcing Materials

et al. 2020

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This paper presents the results of research concerning multilayered epoxy composites reinforced with different materials. The strength of multilayered composites depends, to a large extent, on the reinforcing material. The authors decided to compare the low velocity impact response and perform tensile strength tests on several composites, to ascertain the mechanical properties of the prepared composites. Five different reinforcing materials were provided for the research (two fabrics made from aramid fibers, two fabrics made from carbon fibers and one fabric made from polyethylene fibers). The composites were manufactured by the vacuum supported hand laminating method. The low velocity impact response tests were conducted with the use of a pneumatic launcher. Three strikers with different geometry (conical striker, hemispherical striker and ogival striker) were used. A comparison of the resulting damage to the composites after the impact of the strikers was based on the images obtained using an optical microscope; tensile tests were also performed. The experimental investigation showed significant differences in the mechanical properties of the composites, depending on the applied reinforcing material. It was found that, as a result of the impacts, less damage occurred in the composites which were characterized by a lower Young’s modulus and a higher tensile strength.

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Variation of Shear Properties in Carbon Fiber Composites as Extensional Forces Applied with Different Fiber Orientation

Singh

Tyagi

2020

Proceedings of International Conference in Mechanical and Energy Technology

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Effect of Unidirectional and Woven Fibers on Impact Properties of Epoxy

Cited by 6 publications

References 3 publications

Experimental and numerical investigation of hybrid armor against a ballistic impact

Experimental and numerical investigation of hybrid armor against a ballistic impact

Low Velocity Impact Response and Tensile Strength of Epoxy Composites with Different Reinforcing Materials

Variation of Shear Properties in Carbon Fiber Composites as Extensional Forces Applied with Different Fiber Orientation

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