This investigation aimed to determine the effect of adding Vitis vinifera stalk cellulose (VSC) to epoxy resin composites reinforced with Bambusa vulgaris fiber (BVF). This study also focused on the mechanical, dynamic mechanical analysis, and fatigue properties of epoxy composites fabricated using VSC and BVF. The composite laminates were prepared using a hand layup method and were evaluated with respect to the corresponding ASTM standards. The mechanical properties illustrate that the increment in values for tensile strength and modulus, flexural strength and modulus, Izod impact as well as hardness maximum up to 162 MPa, 6.21 GPa, 182 MPa, 6.48 GPa, 5.72 J, and 90 shore‐D, respectively for 5.0 vol% of BVF and 40 vol% of bamboo fiber composite designation EBG3 (Epoxy + Bamboo + Grape cellulose). Similarly, the addition of BVF by 40 vol% improved the storage modulus, loss factor, and fatigue life count of composite “EB” (Epoxy + Bamboo) by about 2.91 GPa, 0.55 and 19,227, respectively. The highest observed storage modulus and minimum loss factor were about 4.14 GPa and 0.36 for the composite designation “EBG3” as well as the maximum observed fatigue life counts were about 34,227 for the same. These composites with mechanically strong properties with improved thermo‐mechanical properties and fatigue life could be applicable in automotive side door beadings, ballistic resistance defense equipments, sports goods, and also in some of the household gadgets making purposes.
The effects of introducing TiC nanofibers (TiCnf) to the weld pool of Grade AA7010 were investigated in this study. The joints were made on a vertical machining centre with a lap joint arrangement. ASTM standards were followed while testing the strength of tensile and yield and percent of elongation, and hardness strength. According to the data, welds formed with TiCnf at around 1.0 wt % had a maximum tensile strength of 452 MPa. It was discovered that utilizing many nanofibers also enhance microhardness. Because of the nanofiber, the HAZ and TMT grains were polished and distortion-free, resulting in improved mechanical properties.
In this research, a novel aluminium metal matrix composite (AMMC) was developed using recycled aluminium alloy as a matrix with 5% alumina as reinforcement. The machining experiments were conducted by varying the input parameters such as voltage (V
s
), wire feed rate (F
w
), current (I
p
), pulse on time (ON
T
) and pulse off time (OFF
T
), on wire breakage. The effect of voltage level and wire breakage frequency was analysed. The parameter combinations for machining the slot of size 5 mm width and 10 mm height with high machining rate (MR) and less surface roughness (R
a
) were analysed using the CRiteria Importance Through Intercriteria Correlation (CRITIC) and simple additive weighting (SAW) methods. The wire breakage frequency is lesser at minimum peak current. The optimal parameter combination for higher MR and lower R
a
is found to be at 30 V, 7 mm/min, 30 A, 120 μs (ON
T
) and 70 μs (OFF
T
). Analysis of variance (ANOVA) is performed to understand the significant factors affecting the WEDM process. ANOVA results predict that wire feed rate and voltage contribute 47.82% and 21.23%, respectively, to MR; and pulse on time shows a 23.06% influence on surface roughness. Scanning electron microscopy (SEM) was used to ascertain the pattern of wire breakage in WEDM, and based on the results obtained from employing this technique, it is inferred that the erosion and breakage of the wire are not instantaneous and that a cone shape is formed on the either portion of the wire.
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