The data shown in Table 1 are the deviations from nominal diameter for holes drilled in a carbon-fiber composite material used in aerospace manufacturing. The values reported are deviations from nominal in ten-thousandths of an inch. (a) Set up and R charts on the process. Is the process in statistical control? (b) Estimate the process standard deviation using the range method. (c) If specifications are at nominal ±100, what can you say about the capability of this process? Calculate the PCR Cp Table 1. Hole Diameter Data Sample Number X1 X2 X3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 -30 -20 +10 +30 +50 0 +50 -60 -20 +30 -50 +10 +20 -10 -10 +30 -20 +20 -40 +50 +20 0 0 +70 0 +10 0 0 0 -30 0 +20 +20 0 0 +20 +10 -20 +50 -10 +50 0 +40 +20 +40 +30 +20 +30 +30 -30 0 +30 -10 +50 +10 -10 +50 +30 +20 +30 +20 +30 +30 +50 +40 X4 X5 0 +30 +20 +50 +10 -40 +20 -20 -10 -10 0 -20 +10 +10 +50 0 +20 +10 +40 +10 +10 -10 -30 +40 -10 +30 -20 +30 +10 +20 0 +30 +10 0 0

The data shown in Table 1 are the deviations from nominal diameter for holes drilled in a carbon-fiber composite material used in aerospace manufacturing. The values reported are deviations from nominal in ten-thousandths of an inch. (a) Set up and R charts on the process. Is the process in statistical control? (b) Estimate the process standard deviation using the range method. (c) If specifications are at nominal ±100, what can you say about the capability of this process? Calculate the PCR Cp Table 1. Hole Diameter Data Sample Number X1 X2 X3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 -30 -20 +10 +30 +50 0 +50 -60 -20 +30 -50 +10 +20 -10 -10 +30 -20 +20 -40 +50 +20 0 0 +70 0 +10 0 0 0 -30 0 +20 +20 0 0 +20 +10 -20 +50 -10 +50 0 +40 +20 +40 +30 +20 +30 +30 -30 0 +30 -10 +50 +10 -10 +50 +30 +20 +30 +20 +30 +30 +50 +40 X4 X5 0 +30 +20 +50 +10 -40 +20 -20 -10 -10 0 -20 +10 +10 +50 0 +20 +10 +40 +10 +10 -10 -30 +40 -10 +30 -20 +30 +10 +20 0 +30 +10 0 0

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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