ANALISIS KARAKTERISTIK GETARAN PADA KERETA API REL LISTRIK DAN KERETA API REL DIESEL

Abstract

Vibration monitoring was carried out in two type of trains, namely Railroad Electric Train (KRL) and Railroad
Diesel Train (KRD). From measurement results, it was clearly seen that both trains indicate the similar vibration
characteristics, where three dominant frequencies, so called: f1, f2 and f3 always appeared in the region of
frequency measurement: 1Hz – 80Hz. The maximum vibration level in KRL was found to be 0.17m/s2 at f3(40Hz)
in longitudinal direction and 0.164m/s2 at f3(50Hz) in transversal direction. Meanwhile, the maximum vibration
level in KRD was found to be 0.37m/s2 at f3(80Hz) in longitudinal direction and 0.354m/s2 at f1(2Hz) in transversal
direction. Based on these results, it is proved that the vibrations in KRD were much higher than the vibrations in
KRL. However it is important to be noted, that the vibration levels of both trains were still within allowable limit
which is recommended by Standard ISO 2631/I (1985).