Neutrosophic entropy-based ingenious measurement for fast fourier transforms based classification of process-parameters and wear resistance of friction-stir processed hybrid AA7075- B4C aluminium metal-matrix composites

Investigation of microstructure and tribological properties of titanium-aluminide reinforced aluminum matrix composite friction surfaced on AA1050 aluminum

“…Table 3 compares the hardness and friction coefficient of sample C-1200 with the hardness and friction coefficient of the 7000 series aluminum-alloy particlereinforced composite fabricated by friction stir base process reported by other studies [44][45][46][47][48][49][50][51][52][53]. As can be seen, the coating composite fabricated in this study shows a good combination of hardness and friction coefficient compared to other microparticle-reinforced composites obtained after friction stir base processes.…”

Identification of localized defects and fault size estimation of taper roller bearing (NBC_30205) with signal processing using the Shannon entropy method in MATLAB for automobile industries applications

“…During the entry level of defect, it will generate the low or medium-level frequency event and the result was formed which is not so much helpful for the understanding of vibration signature, on further traveling the roller strikes the base will result in the high-frequency event and much more helpful in drawing the complete information regarding stress originating zone [ 67 , 68 , 69 ]. Furthermore, the exit part of the defect will again generate a high level of stress and result in damage to the edge of the crack [ 70 , 71 , 72 ]. The defect width values were calculated using image j and CWT and presented in Table 2 .…”

“…Signal captured during experimentation provides information on roller entry and exit to outer race fault and contains the various band of vibration burst. The nature of the burst was determined by a detailed study of each individual vibration signal which was dependent on the defect width [ 72 , 73 ]. Scalogram created by Continuous Wavelet Transform (CWT) offers critical information on roller entry and exit to the defect [ 76 , 77 , 78 ] and provides the basis for defect width measurement, and concludes misalignment conditions significantly affecting the remaining life of the bearing.…”