Welding of advanced thermoplastic composites refers to the process of joining thermoplastic composite materials using heat and pressure to create a strong, durable bond without the need for adhesives or mechanical fasteners. Thermoplastic composites typically consist of a polymer matrix reinforced with fibers such as glass, carbon, or aramid. The thermoplastic matrix enables these composites to be reshaped and reprocessed through heating, making welding an effective joining method.