Comparative study on ballistic impact response of neat fabric, compliant, hybrid compliant and stiff composite

Mahesh, Vishwas; Joladarashi, Sharnappa; Kulkarni, S. M.

doi:10.1016/j.tws.2021.107986

Cited by 33 publications

(25 citation statements)

References 73 publications

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“…Layers in such constructions can be made of various materials [2][3][4] that are selected and arranged in a proper way to prevent perforation of the armor [5,6].…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Numerical Simulation Techniques of Ballistic Ceramics under Projectile Impact Conditions

et al. 2021

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This article presents an analysis of the effectiveness of available numerical techniques in mapping the characteristic behavior of ballistic ceramics under projectile impact conditions. As part of the work, the ballistic tests were performed on the layered ceramic/steel composite armor and tested with the 7.62 × 39 mm, armor-piercing incendiary (API) BZ projectile. The experimental tests were then mapped using computer simulations. In numerical analyses, four different techniques were used to describe cubic ceramic tiles Al2O3 placed on the ARMOX 500T steel backing plate, i.e.,: the Finite Element Method without Erosion (FEM), Finite Element with erosion (FEM + Erosion), Smoothed Particles Hydrodynamics (SPH) and a hybrid method that converts finite elements to SPH particles after exceeding the defined failure criteria (FEM to SPH conversion). The effectiveness of the individual methods was compared in terms of quality (mapping of characteristic phenomena occurring during the penetration process), quantity (bulge height of the backing plate) and time needed to complete the calculations. On the basis of the results of the experiments and numerical simulations, it was noticed that the most accurate reproduction of the phenomenon of ballistic impact of AP projectiles on ceramic/steel composite armor can be obtained by using a hybrid method, incorporating the conversion of finite elements into SPH particles. This method should be used in cases where accuracy of the results is more important than the time required to complete the calculations. In other situations where the purpose of the calculation is not to determine, for example, the exact value of penetration depth but only to observe a certain trend, the FEM method with defined erosion criteria (variant 2), which is more than 10 times faster, can be successfully used.

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“…Layers in such constructions can be made of various materials [2][3][4] that are selected and arranged in a proper way to prevent perforation of the armor [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the search for optimal solutions is directed towards composite and multilayered structures. Layers in such constructions can be made of various materials [ 2 , 3 , 4 ] that are selected and arranged in a proper way to prevent perforation of the armor [ 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Numerical Simulation Techniques of Ballistic Ceramics under Projectile Impact Conditions

et al. 2021

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“…It is well known that flexible materials are better energy absorbers than stiffer materials. 17,37 Rubber is a compliant material that enhances flexibility when incorporated in a composite. The inclusion of rubber crumb as a filler in the proposed composites, apart from filling up voids in the composites, also induces flexibility in the composite due to the compliant nature of the rubber.…”

Section: Resultsmentioning

confidence: 99%

“…33 In such sacrificial structural applications, natural fibres could be a viable alternative to synthetic fibres. [34][35][36][37] Due to its higher thermo-mechanical properties, economy and availability, jute appears the most promising natural fibre among the numerous natural fibres accessible. As a result, jute-reinforced composites can be used in various engineering applications.…”

Section: Introductionmentioning

confidence: 99%

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Physio-mechanical and thermal characterization of jute/rubber crumb hybrid composites and selection of optimal configuration using the MADM approach

Mahesh

Nagaraj³

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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The present study explores the possible usage of the rubber crumb as a filler in jute-reinforced polymer matrix composites for structural applications. The rubber crumb with different weight percentages of 1.5, 3 and 5 was used for manufacturing the hybrid composites using the hand layup method, and their physio-mechanical properties were compared with the unfilled jute epoxy composite. The results revealed that the addition of a rubber crumb helps to overcome the disadvantage of water absorption by natural fibres since the water absorption of the composite filled with 5 wt% of rubber crumb reduced by 2.6 times compared to the unfilled composite. However, the density of the composites was found to increase with the addition of a rubber crumb. The tensile strength and flexural strength of the composite with 3 wt% rubber crumb was found to be better and was found to be increased by 9.38% and 42.37%, respectively, compared to the unfilled composite. The impact strength of the composite with 5 wt% of rubber crumb was the highest, and it was improved by 16.29% compared to the unfilled composite. The MADM approach, namely the VIKOR method, is successfully implemented to select the best configuration of the proposed hybrid composites. The effect of chemical treatment of the fibre on the winning composite from the MADM approach is further evaluated for its thermal conductivity and thermal resistance. This work can be a benchmark for using and converting the waste tyre rubber into the rubber crumb in polymer matrix composites to enhance their mechanical properties. It can also guide the designers in implementing the MADM approach to select appropriate composite selection when there are multiple conflicting criteria.

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Three body abrasion wear resistance of cenosphere particle‐reinforced syntactic foams developed using molding method

Mahesh,

Harursampath

et al. 2023

Polymer Engineering & Sci

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This study aims to investigate the factors that affect the abrasion of cenosphere‐reinforced syntactic foams and assess their three‐body wear behavior using Taguchi's design of experiments (L16 Orthogonal array). Cenospheres were dispersed into an epoxy matrix to create syntactic foam samples. The findings show that the syntactic foams' rate of wear was influenced by the cenosphere concentration. Reduced wear rate was obtained with a greater cenosphere concentration. Duration and applied force both had an impact on how quickly the syntactic foams wore out. This research can help in the creation of wear‐resistant composite materials for a variety of applications by illuminating the variables influencing the abrasion of cenosphere‐reinforced syntactic foams. The findings demonstrate that sp. rate of wear is minimum (0.124 × 10−8 m3/Nm) at the factor combination of 60% loading of filler, 40 N of applied load and duration of 15 min which can be indicated as A4B4C2. This is 10.56 times better than the combination A1B4C4 which exhibits an sp. wear rate of 1.31 × 10−8 m3/Nm. These lightweight syntactic foams have the potential to be used as tribo‐materials in friction applications, such as composite brake pads.

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Comparative study on ballistic impact response of neat fabric, compliant, hybrid compliant and stiff composite

Cited by 33 publications

References 73 publications

Comparison of Numerical Simulation Techniques of Ballistic Ceramics under Projectile Impact Conditions

Comparison of Numerical Simulation Techniques of Ballistic Ceramics under Projectile Impact Conditions

Physio-mechanical and thermal characterization of jute/rubber crumb hybrid composites and selection of optimal configuration using the MADM approach

Three body abrasion wear resistance of cenosphere particle‐reinforced syntactic foams developed using molding method

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