PARAMETRIC STATISTICAL-ANALYSIS OF ELECTROSTATIC POWDER PREPREGGING

A statistical approach was utilized to analyze the electrostatic powde r prepregging process. A Plackett-Burman screening design was employed to identify electrostatic voltage, tow speed, and fluidization veloci ty as the key system variables. A face centered cubic response surface design, using a second-order linear regression analysis, modeled the impact of the three variables, and the impact of their interaction, on the key dependent variable of towpreg resin volume fraction. Subseque nt verification experimental runs show good agreement with the model.