Severe surface Plastic deformation plays a vital role in materials and several investigations are made on this route. Though, the influence of stacking fault energy of materials on severe surface plastic deformation is not done yet. This investigation studied the optimization of process parameter of SMTP with varying stacking fault energies on wear characteristics of AA6061 and ETP-Copper materials. Also, this investigation on reduction in the stacking fault energy contributes wear characterization were determined. The process parameters such as size of shots, speed of revolution of shaft and duration of treatment chosen which are directly associated to the energy imparted to the surface to induce high strains, accumulation of dislocations and grain refinement that leads to enhancement in strength of material surface. The predicted optimal vales of AA6061 are 4 mm shots, 750 rpm speed of revolution and 45 min duration and ETP-Copper are 4 mm shots, 500 rpm speed of revolution and 60 min duration. The wear volume loss of AA6061, a wear volume loss of 14.5854 × 10 −5 cm 3 is found, which 58% is lower than the wear volume loss of the untreated sample. The wear volume loss of ETP-Copper is 9.5366 × 10 −5 cm 3 , which is 58% lower than the wear volume loss of the untreated sample.
In this study, the mechanical damage of Basalt/E-glass hybrid fiber-reinforced polymer composite tubes was evaluated experimentally using Micro hardness on transverse direction, uni-directional static tensile loading, and Quasi-static compressive loading. The Burn-off test method has been studied for the volumetric fraction of hybrid composite tubes. The multi-layer hybrid composite tubes composed of eight layers of plies at constant fiber tension of 20N, a constant mandrel rotation speed of 45 RPM and constant winding angle of ±55° for basalt fiber and ±90° for E-glass fiber were fabricated through a 3-axis filament winding machine with a seamless amalgamation of the stage by stage curing in the furnace. Eleven tube arrangements with fiber content proportion of {100%,25:75%, 50:50% and 75:25%} with various stacking sequence were studied. The test results provide that these mechanical property’s behavior was moderately affected by the proportion of fiber content and most of the time affected by the variation of layer stacking sequence. Adding 50% of basalt and 50% E-glass fiber sharing of BGH7 hybrid combination of basalt laminate placed in the outer side increases the mechanical characterization compared to the 25% and 75% sharing of basalt and E-glass fiber. The fractured fibrous matrix of the tensile specimens and compressive specimens was assessed using a scanning electron microscope (SEM).
Laser shock peening (LSP) is the emerging technology among several severe surface treatment processes for improving mechanical characteristics of metallic materials by producing compressive residual stresses. Though several LSP experiments have been done on compressive residual stresses, scare amount of studies concentrated on numerical investigation of residual stresses in LSP. The objective of this article is investigation of the experimental and numerical study of compressive residual stresses on AA 7075 t651. In the experiment, residual stresses analysis is performed. The sin^ method was utilized for measuring residual stresses. The three-dimensional (3-D) finite element method (FEM) analysis was applied to simulate the LSP on AA 7075 t651. The simulated and measured results showed good agreements. The numerical study was utilized to determine the compressive residual stresses.
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