In the first two lessons of this section, you learned the theory behind DOE and the importance of establishing a solid methodology. Now we will set up two DOE examples and analyze the results. In lesson 3 we will focus on a connector part and a two-cavity cover molded part with internal ribs. Because injection molding is a complex scientific manufacturing process, it is important to understand the theoretical and practical applications of this powerful mathematical tool.
Topics covered in this lesson include: how to apply DOE theory to molded part examples; how to evaluate an array of process parameters to determine the optimal process for achieving desired part quality factors; how to evaluate a process DOE table and quality response graph; and how to interpret and utilize 3D surface graphs.