The 40th volume of the journal "Advanced Engineering Forum" compiles from peer-reviewed manuscripts presenting the engineering solutions and research results dealing with contemporary problems in applied materials and processing technologies in mechanical engineering, applied mechanics and practice of designing, predictive control technique for a wind turbine system. The professionals, students, and scientific investigators working in the various engineering fields will find this volume of value.Table of Contents: Microstructural Characterization and Mechanical Properties in Friction Stir Welding of AA6061 and AA6101 Aluminum Alloys Synthesis of AA7075 Based 10 wt.% Graphite Reinforced Composites for High Damping Capacity Electrospun Polyacrylonitrile Carbon Nanofiber for Supercapacitor Application: A Review Data Science and Machine Learning Technique for Predicting Electrical Resistivity in Recycled Concrete with Nopal as Addition Fluid Flow in Composite Cylindrical Regions Performance Evaluation of a Developed Dried Grass Shredding Machine for Composting Model-Based Receding Horizon Control of Wind Turbine System for Optimal Power Generation