Mode-I fracture toughness of glass/carbon fiber reinforced epoxy matrix polymer composite

Shekar, K. Chandra; Singaravel, B.; Prasad, Saurabh; Venkateshwarlu, N.; Srikanth, B.

doi:10.1016/j.matpr.2020.09.160

Cited by 15 publications

(3 citation statements)

References 16 publications

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“…As a result, more energy is needed to propagate cracks. The fiber pullout acts as a barrier against crack propagation [27]. Fiber pullouts were observed in figure 6(c).…”

Section: Microstructural Characterizationmentioning

confidence: 96%

Experimental and numerical investigation of fracture toughness of hybrid glass/metal fiber reinforced polymer composites

Agarwal

Sharma²,

Kumar

et al. 2022

Eng. Res. Express

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In this paper, the usefulness of industrial waste metal fiber as a reinforcement in hybrid glass/metal fiber epoxy composites is investigated. The hybrid composites of four-stacking sequence HSG-1, HSG-2, HSG-3, and HSG-4 were fabricated using the vacuum-assisted resin transfer molding (VARTM) technique under a controlled environment. Mode-I fracture toughness of hybrid glass/metal fiber epoxy composites was examined through an experimental SENB test. For the hybrid composites HSG-4, the stress intensity factor of 425.12 MPa.mm1/2 was maximum during mode-I loading compared to the other stacking sequences. Furthermore, finite element analysis for fracture toughness was also carried out, and the simulation results were compared with those of the experiments. With R2 value of 0.99 the deviation was in the range of 0% to 3%. In light of the evaluated results, this research can be expanded to address marine applications simultaneously, allowing for optimal waste usage to reduce environmental issues.

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“…As a result, more energy is needed to propagate cracks. The fiber pullout acts as a barrier against crack propagation [27]. Fiber pullouts were observed in figure 6(c).…”

Section: Microstructural Characterizationmentioning

confidence: 96%

Experimental and numerical investigation of fracture toughness of hybrid glass/metal fiber reinforced polymer composites

Agarwal

Sharma²,

Kumar

et al. 2022

Eng. Res. Express

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show abstract

“…Delamination may be irregular in shape, fiber break outs and cracks in entry and exit of the hole. Delamination factor can be expressed as ratio between diameter maximum obtained to the diameter of required size [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of drill tool types on delamination error in drilling of CFRP

A Venkatram reddy,

Bingi Shiva Kumar,

Kamran Khan

et al. 2023

Int. J. Sci. Res. Arch.

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Carbon Fiber Reinforced Polymer (CFRP) composite is preferred widely in the area of aerospace and automotive industries due to its light weight and high strength. Drilling of FRP composite and its related issues are an important one. The common issue with drilling of CFRP composite is delamination which is most important factor for estimation of delamination error. Selection of appropriate drill tool is one of the methods to control or minimize delamination error. In this work, an experimental investigation is carried out on minimization of delamination effect by selection of appropriate drill tool and process parameters level. Various drill tools are attempted by researchers for controlling delamination error during drilling of CFRP. The important drill types are twist drill, core saw drill and brad drill. The result is noticed that lower value of delamination factor is noticed with higher level of spindle speed (1250 rpm) and lower level of federate (0.10 mm/rev) with core saw drill. Core saw drill and brad spur drill are provided lower value of delamination factor than conventional twist drill. This study is focused on cutting performance with the effect of special drill than conventional one for the effect of delamination error reduction and accuracy. It is noticed that delamination error could be controlled by appropriate drill tool combined with optimum process parameters.

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“…The primary focus will be on how the inclusion of interlayer toughening affects the failure strain under dynamic bending, as well as the locations of crack initiation withing the hybrid composites. The behaviour of interlayer toughening during cyclic loading can improve the understanding of the matrix-veil interaction in dynamic testing, which has been previously determined in quasi-static interlaminar fracture toughness testing [31,32]. A series of dynamic bending tests were used to investigate the dynamic stress distribution of hybrid composites with toughening.…”

Section: Introductionmentioning

confidence: 99%

Stiffness Degradation under Cyclic Loading Using Three-Point Bending of Hybridised Carbon/Glass Fibres with a Polyamide 6,6 Nanofibre Interlayer

et al. 2022

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The stiffness degradation of hybrid carbon/glass fibre composites are investigated under cyclic loading in three-point bending. The composites are compared to toughened composites interlayered with PA 6,6 nanofibre (veil) and a matrix toughened with 5% rubber particulate. With the incorporation of veil into the hybridised composite, the hybrid interface experienced extensive localised delamination, due to crack deflection, causing longitudinal cracking between the fibre and veil interface. It is observed that delamination was redirected and reduced by veil interlayering, due to crack bridging as the cracks propagated. The carbon fibre composites toughened by rubber particulate showed similar stiffness retention to carbon fibre after 1,000,000 cycles. The veil interlayering within carbon fibre improved the stiffness retention by 66.87% for the flexural modulus, compared to carbon fibre and rubber toughened carbon fibre laminates. In both glass and carbon fibre samples, the stiffness retention with veil showed a 10-fold increase in fatigue life, compared with untoughened controls. It is observed from the failure mechanics that veil acted as a randomly orientated fibre layer, rather than a matrix toughener.

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Mode-I fracture toughness of glass/carbon fiber reinforced epoxy matrix polymer composite

Cited by 15 publications

References 16 publications

Experimental and numerical investigation of fracture toughness of hybrid glass/metal fiber reinforced polymer composites

Experimental and numerical investigation of fracture toughness of hybrid glass/metal fiber reinforced polymer composites

Experimental Investigation of drill tool types on delamination error in drilling of CFRP

Stiffness Degradation under Cyclic Loading Using Three-Point Bending of Hybridised Carbon/Glass Fibres with a Polyamide 6,6 Nanofibre Interlayer

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