CAD simulation has become a standard at OEMs and large manufacturers. Conducting tolerance analysis, finite element analysis and other forms of simulation optimize designs and improve manufacturability. These simulations, when combined with correlated inspection, create feedback loops that manufacturing engineers can use to find root cause production issues, account for mean shifts, validate tooling and assembly changes and promote continuous process improvement.
Closed loop manufacturing is a closed loop process of manufacturing and inspection (measuring). The key element to a closed loop process is inspection in manufacturing. By feeding the inspection data upstream in the process, designs can be continuously improved. The goal is to reduce quality costs like scrap and rework while improving the quality and accuracy of the produced parts.