Mechanical and thermal properties of polymer nanocomposites are studied for industrial applications, particularly in automotive and aerospace. Polymer composites with nanoscale fillers have improved mechanical strength, thermal stability, and conductivity. Mechanical properties were tested using tensile, impact, flexural, and fatigue, while thermal properties were measured using TGA and DSC. Composites with nanofillers like carbon nanotubes and metal oxide nanoparticles had improved tensile and impact resistance. High-performance applications require thermal stability and conductivity, which nanocomposites provided. The materials' reduced flammability made them suitable for aerospace applications. Overall, polymer nanocomposites outperform traditional polymers in mechanical and thermal properties. They improve fuel efficiency and sustainability in automotive and aerospace due to their lightweight and durability. Sustainable multifunctional nanocomposites for industrial use should be the focus of future research.

The exceptional mechanical qualities of super martensitic stainless steel have led to its widespread use in structural components subjected to cyclic loadings. The Tungsten Inert Gas (TIG) welding process, an essential technology for modern industrial fabrication, offers potential improvements in weld quality through precise parameter adjustments. This study investigates the effects of varying TIG welding parameters, specifically welding speed (S), welding current (I), voltage (V), and gas flow rate (GFR). Parameters were explored within the ranges of 50–150 mm/min for welding speed, 10–20 volts for voltage, 90–160 amperes for welding current, and 8–20 l/min for gas flow rate. Using response surface methodology (RSM), we identified optimized values of 120 mm/min for welding speed, 15 volts, 140 amperes, and 15 l/min for gas flow rate, which significantly enhance the strength and quality of welds. Mechanical testing such as tensile and hardness tests along with bead profiles and microstructural characterization were conducted to validate the strength and integrity of the welds under these optimized conditions. The findings suggest that, compared to baseline settings, optimizing both energy use and welding quality not only conserves resources but also improves the durability and performance of welded joints. SEM analysis of AISI 410 S SMSS weldment reveals grain boundaries, 42% ferrite in elongated bands, 44% delta ferrite phase of martensite, and scattered globular Cr ₂ C ₃ , indicating a complex microstructure with mixed phases.

The trend of miniaturizing engineering components represents a significant advancement in technology, enabling the production of small, precise parts that are essential in contemporary life. Titanium alloy has become a well-known material in contemporary applications due to its low density and high strength, along with its excellent heat resistance. As a result, it is widely utilized in aerospace and gas turbine industries. This article presents a novel study aimed at investigating the machining effects of titanium alloy through the optimization of micro-turning process parameters, focusing on tool wear and surface roughness. The study indicates that the primary factors influencing reactions are cutting speed and feed rate. The analysis of numerical and graphical methods aims to determine the optimal process parameters. The gathered results indicate that optimal tool wear and surface roughness are achieved simultaneously at 0.149 mm and 0.691 μm, respectively, with cutting parameters set at 3035 rpm for cutting speed, 7.5 μm/rev for feed, and a depth of cut of 15 μm, resulting in 89% desirability. This approach enhances output and surface quality while minimizing machining costs. A confirmation experiment is conducted and analyzed for the purpose of comparative study, focusing on residual error. The analysis through Scanning Electron Microscopy indicates that the medium order cutting conditions yield superior performance while addressing conflicting objectives, resulting in a smoother surface topography.