Downloaded from https://www.everyspec.com AMCP 700-19 Example No. 1(C) This example uses Data Set B, see Example Nos. 1(C) and I(D), Table 2-4 Data Set B. K--S Bounds Method (Table 2-4. Fix, 2-2) P~oedeExan 1. Choose a s-confidence level. Use 1. N 1 10 a number near 1 - 1/N. Find KSx 1 - 1/N - 90%. Use 90% a-oonfidence. from Table 2.-1(A) or the table on reverse side of Fig. 2-2. KS, - 0.7. 2. Plot the data from Cola. 2-3 us- 2. Prepare Col. 3 of Table 2-4. ing the instructions on the Practi- Plot on Fig. 2-2. cal Probability Paper. 3. Find the lower and upper esti- 3. Use lines #1 and 02. mates ofa, pandptu. p P,-600hr mAU - 1000 hr. 4. Find the lower and upper esti- 4. Use lines #3 and #4.
mates of a, ar, and (ru. Use the 100 hr 5 scale. au 800 hr. 5. Draw line #5 for the point esti- 5. 800 hr mates of p and a, P and 57. a 260 hr. It is difficult to tell much from the data. The scatter and uncertainty are brought forcibly to the engineer's attention. The 10% failure point appears to be somewhere between 0 and 650 hr. Since the data tell so little, they are not plotted by the Beta Bounds method. 1I' "IJI .........