Dual filler functionally graded polymermaterials – manufacturing process and characteristics

Farahnakian, Masoud; Joosheghan, Sadegh Elhami; Moradi, Maziar

doi:10.1080/10426914.2020.1832690

Cited by 9 publications

(2 citation statements)

References 24 publications

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“…The concept of FGM can be used to reduce the effects of delamination damage on the composite sandwich structure [15]. Most of the functionally graded polymeric matrix composites are reinforced with particles or short fibers [16–21]. To the best of authors’ knowledge, there is limited extant research that addresses functionally graded long-fiber composites [22–24].…”

Section: Introductionmentioning

confidence: 99%

Flexural behavior of functionally graded polymeric composite beams

Atta

Abu-Sinna

Mousa

et al. 2021

Journal of Industrial Textiles

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The bending test is one of the most important tests that demonstrates the advantages of functional gradient (FGM) materials, thanks to the stress gradient across the specimen depth. In this research, the flexural response of functionally graded polymeric composite material (FGM) is investigated both experimentally and numerically. Fabricated by a hand lay-up manufacturing technique, the unidirectional glass fiber reinforced epoxy composite composed of ten layers is used in the present investigation. A 3-D finite element simulation is used to predict the flexural strength based on Hashin’s failure criterion. To produce ten layers of FGM beams with different patterns, the fiber volume fraction ( Vf%) ranges from 10% to 50%. A comparison between FGM beams and conventional composite beams having the same average Vf% is made. The experimental results show that the failure of the FGM beams under three points bending loading (3PB) test is initiated from the tensioned layers, and spread to the upper layer. The spreading is followed by delamination accompanied by shear failures. Finally, the FGM beams fail due to crushing in the compression zone. Furthermore, the delamination failure between the layers has a major effect on the rapidity of the final failure of the FGM beams. The present numerical results show that the gradient pattern of FGM beams is a critical parameter for improving their flexural behavior. Otherwise, Vf% of the outer layers of the FGM beams, i.e. Vf% = 30, 40, or 50%, is responsible for improving their flexural strength.

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Section: Introductionmentioning

confidence: 99%

Flexural behavior of functionally graded polymeric composite beams

Atta

Abu-Sinna

Mousa

et al. 2021

Journal of Industrial Textiles

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“…However, filler inclusion within a matrix is limited by the upper bound of filler concentration, beyond which the matrix loses its structural integrity. [ 305 ] To get around this issue, other approaches, such as the manipulation of gradient filler orientation, [ 94 ] type, [ 306 ] or size, should be explored.…”

Section: Needs Challenges and Potential Pathwaysmentioning

confidence: 99%

Soft Functionally Gradient Materials and Structures – Natural and Manmade: A Review

Pragya

Ghosh

2023

Advanced Materials

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Functionally gradient materials (FGM) have gradual variations in their properties along one or more dimensions due to local compositional or structural distinctions by design. Traditionally, hard materials (e.g., metals, ceramics) have been used to design and fabricate FGMs; however, there has been increasing interest in polymer‐based soft and compliant FGMs mainly because of their potential application in the human environment. Soft FGMs are not only ideally suitable to manage interfacial problems in dissimilar materials used in many emerging devices and systems for human interaction, such as soft robotics and electronic textiles and beyond. Soft systems are ubiquitous in our everyday lives; they are resilient and can easily deform, absorb energy and adapt to changing environments. Here, we discuss the basic design and functional principles of biological FGMs and their manmade counterparts using representative examples. The remarkable multifunctional properties of natural FGMs resulting from their sophisticated hierarchical structures, built from a relatively limited choice of materials, offer a rich source of new design paradigms and manufacturing strategies for manmade materials and systems for emerging technological needs. Finally, we highlight the challenges and potential pathways to leverage soft materials' facile processability and unique properties to wards functional FGMs.This article is protected by copyright. All rights reserved

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