To solve the problem that process capability optimization in multistage manufacturing processes has not been studied so much. Firstly, a multistage manufacturing process quality variation model is built to analyze the impaction of each stage quality on process capability. Then, a multistage manufacturing process capability analysis method with “Costutility ratio” is proposed to prioritize proce...

Traditional concepts for manufacturing process optimization, e.g., Lean Production and Total Quality Management, represent management-driven and experience-based approaches. The increasing use of cyber-physical systems as well as the digitalization of manufacturing operations management by manufacturing execution systems (MES) lead to enormous amounts of structured and unstructured manufacturin...

Process planning plays an important role for ensuring machining quality, reducing production cost, and shortening leading time. Since there are many uncertainty factors for manufacturing resources in a changing manufacturing environment, especially for small batch manufacturing of large scale parts requiring long process planning time, manufacturing companies are facing significant challenges o...

Statistical process control ($SPC$), an internationally recognized technique for improving product quality and productivity, has been widely employed in various industries. $SPC$ relies on the use of control charts to monitor a manufacturing process for identifying causes of process variation and signaling the necessity of corrective action for the process. Fuzzy data exist ubiquitously in the ...

In this section MS as well as recent developments in the area of holistic IM and related topics will be presented. Furthermore, certain basic aspects of manufacturing, MS and related areas are described in detail in order to allow readers to familiarize themselves with the fundamental terms and definitions used throughout this dissertation. In each subsection, concluding paragraphs summarize ho...

Current works on process-oriented tolerancing for multi-station manufacturing processes (MMPs) have been mainly focused on allocating fixture tolerances to ensure part quality specifications at a minimum manufacturing cost. Some works have also included fixture maintenance policies into the tolerance allocation problem since they are related to both manufacturing cost and final part quality. Ho...

The six sigma methodology aims to reduce the number of mistakes/defects in a manufacturing process and hence the manufacturing costs. Six sigma is the ultimate measure of quality. As firms improve their processes, and move towards the elusive six sigma, they often need to re-design the products, process and services to ’’designout’’ defects and design-in quality. Describes the underlying statis...

multivariate process capability indices (mpci) show how well a manufacturing process can meet specifica-tion limits when quality characteristics enclose a relative correlation. process capability is an important and commonly used metric for assessing and improving the quality of a production process. when quality charac-teristics of a product are correlated then an attractive comes close to mpc...