Acceptance test according to UIC 518 and CEN/TC 256 WG 10 publication EN 14363



Assessment
quantities

Filtering
cut-off freq

Method of
calculation

Percentile

(∑Y)2m
lateral
track-shift force

≥ 20 Hz

sliding mean 2m
sampling interval 0.5m

F1= 0.15%
F2= 99.85%

(Y/Q)2m

Y over Q ratio

≥ 20 Hz

sliding mean 2m
sampling interval 0.5m

F1= 0.15%
F2= 99.85%

Q
Vertical contact force

20 Hz

-

F2= 99.85%

Yqst

Lateral quasi-static wheel force

≥ 20 Hz

-

F0= 50%

Qqst

Vertical quasi-static wheel force

≥ 20 Hz

-

F0= 50%

ÿq* q*
Lateral and vertical accelerations

.4-10Hz

-

F1= 0.15%
F2= 99.85%
r.m.s. values
sÿq* and sz¨q*

ÿ*qst
Lateral quasi-static acceleration

≥ 20 Hz

-

F0= 50%

∑Y
Instability criterion

f0=±2Hz

-

Sliding r.m.s. value