What are the examples of non fusion welding processes?

Non-fusion welding processes include techniques such as mechanical fastening, adhesive bonding, and ultrasonic welding. Mechanical fastening involves joining materials using bolts, screws, or rivets without melting the base materials. Adhesive bonding uses special adhesives to create a strong bond between surfaces. Ultrasonic welding employs high-frequency ultrasonic vibrations to create localized heat at the joint, allowing materials to bond without reaching their melting point.