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AUGUST 2019 I SMT007 MAGAZINE 77 5B, which is the best result. Figure 7 shows an example of what a 4B result would look like. This test presented a comparison of the hand-spray to the new, automated-spray pro- cess; it validated that there was no degradation between the old process and the new. A thickness comparison between the hand- spray and automated-spray processes was also performed. Per J-STD-001, the thick- ness requirements for polyurethane materials is 0.03–0.13 mm (0.001–0.005 in.) measured on a flat unencumbered surface that was pro- cessed with the CCAs [1] . The thickness was measured using the eddy current probe on a stainless steel coupon. The automated-spray- ing process has proven to reduce the variation in thickness that is observed with the current hand-spraying process. Figure 8 shows the improvement and reduction of variation in the thickness measurements (measured in mils) from hand spray to automated spray. The pro - cess capability, Cpk, has also increased from 0.82 with the hand spray to 1.98 with the automated spray. Figure 6: Adhesion by tape test (before and after 5B example). Figure 7: Adhesion by tape test (4B example). Figure 8: Control chart comparing hand spray to auto spray.