Hygrothermal chamber aging effect on mechanical behavior and morphology of glass fiber-epoxy-nanoclay composites

Shettar, Manjunath; Kini, U. Achutha; Sharma, Sathyashankara; Hiremath, P. S.; Gowrishankar, M. C.

doi:10.1088/2053-1591/ab6405

Cited by 18 publications

(14 citation statements)

References 46 publications

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“…This interface area increase is observed with higher glass fiber wt.% in the composites. At an elevated level of stress, the increased glass fiber wt.% causes the inception of plastic deformation (Nuruzzaman et al, 2016)- (Shettar, Kini et al, 2020).…”

Section: Tensile Strengthmentioning

confidence: 99%

“…For an immersion period of 180 days, the retention rate of tensile strength is observed to be at 85% for a composite with 50 wt.% glass fiber in comparison to 81 & 74% for composites with 40 and 30 weight percentages, respectively. The resistance to moisture absorption by the composite is improved with increases in wt.% of glass fiber (Shettar, Shettigar et al, 2020) (Shettar, Kini et al, 2020).…”

Section: Tensile Strengthmentioning

confidence: 99%

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Durability prediction analysis on mechanical properties of GFRP upon immersion in water at ambient temperature

et al. 2021

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In this article, the influence of varying the weight percentage of glass fiber on the water uptake, tensile and flexural strengths of glass fiber-polyester composites are evaluated. The composites are fabricated by hand lay-up process and further subjected to water immersion for a varied time period (between 0 and 180 days) at ambient temperature. Tests for Tensile and flexural strengths are conducted according to the specifications of ASTM. The test results indicate that the increase in the weight percentage of glass fiber enhanced the tensile strength (by 9-17%) and flexural strength (by 10-17%). Higher retention rates of tensile and flexural strengths are detected at higher weight percentages of glass fiber. An 86% retention rate of tensile strength and a 92% retention rate of flexural strength is detected with 50 wt.% glass fiber reinforced, water immersed specimen. The causes for the failure of specimens under tensile load are discovered with the help of SEM images. The experimental data and the data generated by the ExpDec1 model are significantly closer to each other, which indicates that the ExpDec1 model can be used for predicting the values based on the days of immersion.

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Section: Tensile Strengthmentioning

confidence: 99%

Section: Tensile Strengthmentioning

confidence: 99%

Durability prediction analysis on mechanical properties of GFRP upon immersion in water at ambient temperature

et al. 2021

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“…The reason for this phenomenon is as follows: light, heat, humidity, oxygen and other factors and the change of polymer composition and state structure are the main external and internal factors causing the aging of materials [31]. During degradation, the first barrier to receive external factors is the matrix and the ultraviolet light from natural light can cause partial degradation of macromolecular chains in the resin matrix, so that the mechanical properties of the composite material can be significantly reduced after aging [32]. However, the surface morphology of the specimen is basically unchanged as the natural aging time is short.…”

Section: Effects Of Natural Aging On Mechanical Properties Of Specimensmentioning

confidence: 99%

Comparison on mechanical properties, damage evolution and aging effects of multi-delaminated composites under three point bending

et al. 2020

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The study on natural aging of fiber reinforced composite, delamination damage behavior and damage pattern recognition plays a significant role in structural health monitoring of the material. In this study, acoustic emission is used to investigate damage evolution process and damage mechanisms in unidirectional glass and carbon-glass orthogonal woven fiber reinforced composites containing symmetric multiple delaminations under three point bending testing. Based on the principle of control variables, four kinds of specimens are manufactured to investigate the comparative study for the effects of delaminations, reinforced materials and fiber orientation on buckling failure behaviors and the effects of aging on mechanical properties. The results indicate that the degradation of strength and stiffness of composite can be influenced by the existence of delamination defects and natural aging condition. Both negative and positive effects can be generated by natural aging condition. Moreover, reinforced materials, porosity and fiber orientation are important factors influencing the reliability of composite. Clustering results of unidirectional fiber reinforced composites indicate interphase failure is the main damage component, moreover, the existence of symmetrical multiple delaminations will aggravate the damage of composite and make instability failure characterized by intermittency.

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“…Different types of micro-and nanofillers are used to enhance specific properties of the composites (Samal, 2020;Shettar, Kini et al, 2020;Shettar, Kowshik et al, 2020). Incorporating nanoparticles into epoxy resin enhances thermal and mechanical properties in addition with providing excellent strength and dimensional stability (Behniafar & Nazemi, 2017;Demirci et al, 2017;Taşyürek & Tarakçioğlu, 2017) .…”

Section: Introductionmentioning

confidence: 99%

A review on strengthening, delamination formation and suppression techniques during drilling of CFRP composites

Rathod

Patel

et al. 2021

Cogent Engineering

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Carbon fiber-reinforced composite laminates are progressively appealing for several applications in various manufacturing sectors such as aeronautical and automobile, because of their amazingly predominant mechanical properties. This has subsequently led to an increase in research of various machinability techniques emphasizing on both conventional and non-conventional methods. Typically, conventional drilling is one of the most significant machining processes for most kinds of fiber composite laminates. The most unsolicited damage termed as delamination during drilling has recently become one of the most influential research subjects as numerous engineers in manufacturing sector have been trying to prevent this problem over decades. This review paper briefly discusses about the incorporation of different types of fillers in carbon fiber-reinforced composites. The paper also summarizes the steady progress in drilling-induced delamination of carbon fiber laminates. It covers the delamination formation mechanism, delamination suppression strategies, and the optimization of various drilling parameters to reduce the delamination damage. The present article provides researchers an opportunity to deepen their knowledge on specific aspects by exploring different methods for reducing delamination in CFRP composites.

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Hygrothermal chamber aging effect on mechanical behavior and morphology of glass fiber-epoxy-nanoclay composites

Cited by 18 publications

References 46 publications

Durability prediction analysis on mechanical properties of GFRP upon immersion in water at ambient temperature

Durability prediction analysis on mechanical properties of GFRP upon immersion in water at ambient temperature

Comparison on mechanical properties, damage evolution and aging effects of multi-delaminated composites under three point bending

A review on strengthening, delamination formation and suppression techniques during drilling of CFRP composites

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