PSI - Issue 50

E.A. Afanaseva et al. / Procedia Structural Integrity 50 (2023) 1–5 Afanaseva E.A and Afanaseva O.S. / Structural Integrity Procedia 00 (2023) 000–000

4

Fig. 2. Individual prediction of the wear by leader-item of the front landing gear axle box for samples No. 3, No. 6 and No. 9.

where p i and p 0

i — the values of the generalized movement of the leader-item and the predicted item at points t = t i ,

respectively, ˆ p , ˆ p 0 — the averaged values of p

0 i , s 1 — the standard deviation of the predicted sample, calculated

i and p

by the formula s 1 = 1 n − 1

n i = 1

0

2

p 0

i − ˆ p

.

Fig. 3. Individual forecasting by the leader-item (item No. 2) of aircraft landing gear wear for samples No. 3, No. 6 and No. 9, according to the modified method

Fig. 3 shows the recalculated confidence intervals for samples No. 3 and No. 6, No. 9 according to the refined methodology, which are significantly smaller than those presented in Fig. 2. Therefore, the implementation of the forecast according to the modified methodology will give more accurate results.