PSI - Issue 19

Anne Coulon et al. / Procedia Structural Integrity 19 (2019) 665–673 Anne Coulon/ Structural Integrity Procedia 00 (2019) 000–000

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Fig. 7. Operating measurement and FE model reliability.

The remaining life evaluation includes different assumptions:  Distribution on the network: Only on one line or equitable repartition on all lines,  Loads, example: 1/3 full load and 2/3 empty,  Service frequency.

Finally, the results can be represented on a graph, see Fig. 8. On this example, with current operating loads, the lifetime of the rolling stock is over 40 years. Increasing the frequency to 2 minutes at peak hours will leads to risk of failure after 35 years. According to these results, modifications and reinforcements can be evaluated in the sensitive areas with the FE model.

Fig. 8. Remaining life evaluation results.

If the desired lifetime is not reached, a specific maintenance plan can be defined to control sensitive areas and afterwards structural reinforcements can be integrated.