主题词：Advanced machining processes and optimization; Advanced Machining and Optimization Techniques; Gear and Bearing Dynamics Analysis; Tribology and Lubrication Engineering; Advanced Surface Polishing Techniques; Aluminum Alloys Composites Properties; Mechanical Engineering and Vibrations Research; Advanced Combustion Engine Technologies; Hydraulic and Pneumatic Systems; Metallurgy and Material Forming; Composite Structure Analysis and Optimization; Manufacturing Process and Optimization; Machine Fault Diagnosis Techniques; Biodiesel Production and Applications; Additive Manufacturing and 3D Printing Technologies; Vibration and Dynamic Analysis; Structural Health Monitoring Techniques; Heat Transfer Mechanisms; Fatigue and fracture mechanics; Metal Forming Simulation Techniques; Heat Transfer and Optimization; Mechanical stress and fatigue analysis; Additive Manufacturing Materials and Processes; Advanced Welding Techniques Analysis; Refrigeration and Air Conditioning Technologies