APPARATUS AND METHOD FOR MONITORING OF FRICTION STIR WELDING AND FRICTION STIR SPOT WELDING PROCESS

摘要

PURPOSE: An apparatus and a method for monitoring friction stir welding and friction stir point welding are provided to improve the welding quality of the friction stir welding and friction stir point welding. CONSTITUTION: An apparatus for monitoring friction stir welding and friction stir point welding comprises a tool(10), a sound sensor, an amplifier(17), and a monitor(19). The tool attaches materials by the friction stir welding and friction stir point welding. The sound sensor is arranged adjacent to the tool and senses sound emission signals generated from the attached part of the materials. The amplifier is electrically connected to the sound sensor to amplify the sound emission signals. The monitor is electrically connected to the amplifier and displays the sound emission signals as a graph based on a time function.