The friction stir welding (FSW) process is known as a solid-state welding process, comparatively stable against external influences. Therefore, the process is commonly used with fixed welding parameters, utilizing axial force control or position control strategies. External and internal process disturbances introduced by workpiece, gap tolerance, tool wear, or machine/tool inadequacies are rarely monitored, and conclusions about the weld seam quality, based on the recorded process data, are not drawn. This paper describes an advancement, improving on research into the correlation of process force feedback events or gradual force changes and the resulting weld seam characteristics. Analyzing the correlation between examined weld sections and high-resolution rate force data, a quality monitoring system based on an analytic algorithm is described. The monitoring system is able to accurately distinguish sound welds from such with internal (void) and external (flash) defects.

搅拌摩擦焊（FSW）工艺被称为固态焊接工艺，在受到外界影响时相对稳定。因此，该过程通常使用固定的焊接参数，利用轴向力控制或位置控制策略。由工件，间隙公差，工具磨损或机床/工具不足引起的外部和内部过程干扰很少被监测，并且基于所记录的过程数据，未得出关于焊缝质量的结论。本文描述了一种进步，正在改进对过程力反馈事件或逐渐的力变化与所产生的焊缝特征的相关性的研究。通过分析检查的焊缝截面与高分辨率力数据之间的相关性，描述了一种基于解析算法的质量监控系统。