factor interactions of the experimental factors. These arrays are classified into regular and
nonregular designs. Good regular designs are available in the literature for large run sizes
that are a power of 2. In contrast, good nonregular designs, which have run sizes that are
multiples of 8 and are more flexible alternatives to regular designs, are not available for
large numbers of runs because their construction is challenging. In this article, we introduce …
Two-level orthogonal arrays of strength 3 permit the study of the main effects and the two-
factor interactions of the experimental factors. These arrays are classified into regular and
nonregular designs. Good regular designs are available in the literature for large run sizes
that are a power of 2. In contrast, good nonregular designs, which have run sizes that are
multiples of 8 and are more flexible alternatives to regular designs, are not available for
large numbers of runs because their construction is challenging. The contribution of this …