Experimental investigations on the moisture absorption and mechanical behaviour of basalt-aramid/epoxy hybrid interply composites under different ageing environments

Pai, Yogeesha; Pai, Dayananda; Kini, M. Vijaya

doi:10.1080/23311916.2022.2080354

Cited by 11 publications

(5 citation statements)

References 33 publications

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“…The no hole ABFRP showed an increase of 28.97% in ultimate strength compared to AFRP. The improved mechanical performance due to aramid-basalt hybridization has been confirmed by various literatures [10,22,31,63].…”

Section: Tensile Propertiessupporting

confidence: 58%

“…These hybrid composites showcase unique attributes that can effectively address a variety of conflicting design needs in a more economically efficient manner than traditional composites [20,21]. Previous investigations have revealed that impact properties of basalt fibres can be enhanced by incorporating aramid fibres which have higher ductility [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Hole Size on Open Hole Tensile (OHT) and Flexural Strength (OHF) of Aramid-Basalt Fibre Reinforced Polymer Composites

Fernandes,

Dutta,

Pai

et al. 2023

Preprint

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The open hole tensile and flexural test of composites holds immense importance in aerospace and structural engineering. These tests provide critical insights into how composites perform under real-world conditions, allowing for the development of materials that meet rigorous standards, thereby ensuring the safety and durability of aircraft and other applications. This study investigates the influence of hole size on the open hole tensile (OHT) and flexural properties (OHF) of plane woven aramid/epoxy (AFRP), basalt/epoxy (BFRP), and aramid-basalt/epoxy (ABFRP) sandwiched laminates. Specimens with three different hole sizes viz., 4 mm, 6 mm, 8 mm were prepared and tested according to ASTM D5766 and ASTM D7264 for OHT and OHF performance respectively. Results indicated that the hybridization of aramid-basalt layers in a sandwich lay up significantly improved the mechanical performance when compared to only aramid laminate. However, with the increase in hole size the mechanical properties declined irrespective of the material. Basalt fibres showed higher hole sensitivity under tensile loading due to its brittle fracture mechanism while aramid fibres exhibited higher hole sensitivity under flexural loading which can be attributed to its the poor compressive strength. The effect of hole size on the damage mechanism has also been highlighted through scanning electron microscope (SEM). Major failure modes observed are delamination around the hole edges, ductile and brittle fibre fractures, and delamination.

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Section: Tensile Propertiessupporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Effect of Hole Size on Open Hole Tensile (OHT) and Flexural Strength (OHF) of Aramid-Basalt Fibre Reinforced Polymer Composites

Fernandes,

Dutta,

Pai

et al. 2023

Preprint

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show abstract

“…Figure 12 shows the effect of moisture content on the flexural properties of the samples. Flexural strength of dry specimens (196.2 MPa) was found being 39.76% higher than that of GFRP composites (~127.5 MPa) as reported by Mukhtar et al [40] owing to the strength of carbon fibre (4050 MPa, Table 1) being significantly higher than that of E-glass fibre (2400 MPa) [41]. Figure 12 It can be seen in Figure 12b that similar to tensile strain, the flexural fracture strain of wet specimens was found being slightly higher than that of dry specimens due to water swelling.…”

Section: Flexural Strengthmentioning

confidence: 49%

“…Pai et al [41] reported that the tensile strength and modulus of basalt-aramid/epoxy hybrid composites decreased by 21.88% and 18.83%, respectively, due to water aging at room temperature. The decrease in tensile strength was found being significantly lower than those of compressive and flexural strength.…”

Section: Discussionmentioning

confidence: 99%

Tensile, Compressive, and Flexural Characterization of CFRP Laminates Related to Water Absorption

et al. 2023

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CFRP structures are often exposed to humid environment resulting in water absorption and causing property degradation. Water swelling and its effect on tensile, compressive, and flexural properties were investigated according to ASTM standards. Fracture modes were evaluated by analyzing micrographs of fracture areas. The specimens were cut from twill wave CFRP composite plates fabricated using a vacuum infusion technique. Some of them were immersed in water prior to being mechanically tested. It was found that tensile strength, as well as compressive, and flexural strength and moduli decreased due to water swelling, but fracture strain was found to increase due to water swelling. The most severely affected by water swelling is flexural strength (decreased by 25.72%), and the least is compressive modulus (decreased by 1.89%). Tensile specimens underwent fibre breakage followed by matrix cracking, compressive and flexural specimens showed fibre buckling followed by kinking and crushing where flexural specimens failed in their compressive side. In conclusion, water absorption has a bad impact on the composite strength.

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“…Pai et al [38] investigated the mechanical properties of basalt and aramid fiber hybrid composites under three different aging conditions and emphasized that moisture absorption has a negative effect. They showed that matrix segregation, matrix cracks, and interfacial bond rupture occur under the aging effect.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigations on the thermo-mechanical properties of carbon-basalt-aramid/epoxy and glass-basalt-aramid/epoxy hybrid interply composites under different aging environments

ERDOGAN

2023

Advanced Topics in Mechanics of Materials, Structures and Construction

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Abstract. In this study, Carbon-Basalt-Aramid (C-B-A) and Glass-Basalt-Aramid (G-B-A) samples were produced, and their thermal expansion coefficient (α), glass-transition temperature (Tg), and dimension change properties were investigated. In the study, thermo-mechanical properties of hybrid composites with and without 12 h and 48 h aging processes were determined. As a result, the properties obtained according to the results of TMA analysis of both hybrid composites with the aging process changed significantly.

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Experimental investigations on the moisture absorption and mechanical behaviour of basalt-aramid/epoxy hybrid interply composites under different ageing environments

Cited by 11 publications

References 33 publications

Effect of Hole Size on Open Hole Tensile (OHT) and Flexural Strength (OHF) of Aramid-Basalt Fibre Reinforced Polymer Composites

Effect of Hole Size on Open Hole Tensile (OHT) and Flexural Strength (OHF) of Aramid-Basalt Fibre Reinforced Polymer Composites

Tensile, Compressive, and Flexural Characterization of CFRP Laminates Related to Water Absorption

Experimental investigations on the thermo-mechanical properties of carbon-basalt-aramid/epoxy and glass-basalt-aramid/epoxy hybrid interply composites under different aging environments

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