Dynamic Mechanical Analysis and Optimization of Hybrid Carbon-Epoxy Composites Wear using Taguchi Method

Abstract

The purpose of this research work is to explore the potential of nano silicon dioxide (nSiO2) with the carbon fiber reinforced epoxy (CF/Ep) composite for achieving better wear resistance and viscoelasticity. An effort is made to improve the material behavior by modifying epoxy with silane treated nSiO2. Ultrasonication process is used to disperse the nano particles uniformly within the matrix material. Mono CF/Ep composite and hybrid nSiO2-CF/Ep composites are fabricated by vacuum bagging method. Post curing of the composites is carried out effectively. Dry sliding wear tests are conducted using Taguchi technique by considering four levels, three factors namely, filler loading (0, 0.5, 1.5, and 3 wt.%), sliding velocity (0.75, 1.5, 2.25 and 3 m/s) and load (15, 30, 45, and 60 N). Further from the analysis of variance, the impact of each factor and level on specific wear rate (Ks) and coefficient of friction (COF) are examined. The result revealed that the lowest Ks and COF are in 3 wt.% nSiO2 filled CF/Ep hybrid composite. The optimum control factor-level combinations identified from the experiments, for achieving lowest Ks (0101×10 -13 m 3 /Nm) and COF (0.221), are 3 wt.% filler loading, sliding velocity of 0.75 m/s, and an applied load of 60 N. Based on Signal to noise graph, confirmation test is conducted. Worn surface of the composites are analyzed utilizing scanning electron microscope. Damping behavior of the composites is analyzed from room temperature till 160 ˚C. As the filler content increased, storage modulus (E') and glass transition (Tg) temperature increased. 3 wt.%, nSiO2 filled composite showed higher E' of 18386 MPa and Tg of 87.3 C.

Modeling and analysis of TiO2 filler's impact on specific wear rate in flax fiber-reinforced epoxy composite under abrasive wear using Taguchi approach

“…A confirmation test validates analysis findings (Shonda and Jeffrey, 2013; Divya et al ., 2021). The predictive equation can be used to determine the anticipated S/N ratio of SWR at the optimal control variable level (Sudheer et al ., 2012; Ravikantha et al.…”

Processing and tribological behaviour of carbon fiber reinforced polylactic acid composites

“…The KS value obtained experimentally for CF-PLA composite at optimised condition was lower in comparison to PLA composite. KS value of PLA composite was reduced due to higher load bearing capacity along with increased strength and stiffness by reinforcement of carbon fibers, the obtained results are in line with the previous literature works [12][13][14][15][16][17][18][19][20][21][22][23].…”

“…The difference between experimental and theoretical densities indicate presence of voids and pores in the fabricated composite samples, that have a considerable impact on the material properties [17]. The CF-PLA The statistical approach of Analysis of variance (ANOVA) was used to generate a set of conclusions according to the experimental results and significant contributions of each factor on the response [21]. ANOVA was performed for 5% level of significance and 95% degree of confidence.…”

A Critical Review on Tribological and Mechanical Characteristics of Hybrid Polymer Composite Materials

“…The hybrid composites are used for many application and replacing wood, wood fiber composites, and conventional materials. [33] Divya et al [34] carried out experimental work on nano silicon dioxide with carbon fiber reinforced epoxy composite for getting better wear resistance and visco-elasticity through Taguchi technique and ANOVA. The result revealed that lowest specific wear rate and coefficient of friction are in 3 wt% nSiO 2 filled CF/Ep hybrid composite.…”