DYNAMIC MEASUREMENT OF THE SIDE RAIL WEAR USING A LASER RANGEFINDER
Based on the results of investigations of several train crashes, it was found that the condition of railroads and railroad wheels that were not in accordance with the provisions became the main cause of the accident. Rail wear is an important parameter in estimating railroad conditions. If the we...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/43348 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Based on the results of investigations of several train crashes, it was found that the
condition of railroads and railroad wheels that were not in accordance with the
provisions became the main cause of the accident. Rail wear is an important
parameter in estimating railroad conditions. If the wear is too high, it can cause a
train out of the railroad track. Now, wear measurements are still done manually so
that the measurements is not effective and also a long time to do. Aside from doing
manual measurements, rail wear is also measured indirectly using a measuring train.
Where the value of rail wear is only seen from the widening of the rail along the
inspection. To overcome this problem, a wear measurement system of the side rail
wear was designed using a laser rangefinder.
Measuring wear using a laser rangefinder utilizes the difference in the travel time
of the laser signal between the signals sent and received. The difference in travel
time will be processed into a distance value considering the laser speed is always
constant. The wear value is obtained by reducing the measured distance by
reference where the reference is the distance value between the laser to the rail when
the rail condition is no wear. Research has been conducted at PT Len Railway
Systems (LRS) and PT Kereta Api Indonesia (KAI). Research at PT LRS was
conducted to determine the optimum conditions of measurement and to see system
performance during dynamic measurements. In this study, the system has a high
precision value when the system is isolated from direct sunlight and the
measurement distance is in the range of 60-70 mm. From the data processing, the
system's accuracy level reaches 1 mm with a standard deviation below 0.6 mm.
Research at PT KAI was conducted to determine the value of rail wear around
Bandung Station. In this study the measured wear value was calibrated based on the
width of the rail track. In testing the wear measurement system on rails R42 and
R54 PT KAI it was found that the maximum wear value for R42 type rails was 9
mm and 7 mm for R54 type rails. |
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