Study on the Applicability of On-Board Acceleration Data from KTX Commercial Trains for High-Speed Railway Track Maintenance

Q: What does this research mean for the field?

On-board vibration acceleration data from commercial high-speed trains, particularly when analyzed across multiple frequency bands, can successfully identify track irregularities and rail defects for maintenance purposes. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

Yeong-Tae Choi; Kangsub Shim; Nam-Hyuck Kim

doi:10.7782/jksr.2026.29.8.796

August 31, 2026Journal of the Korean society for railway

Study on the Applicability of On-Board Acceleration Data from KTX Commercial Trains for High-Speed Railway Track Maintenance

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Key Points

To evaluate whether multi-band vibration acceleration data collected from regular commercial KTX trains can effectively identify track irregularities and rail defects for maintenance planning.
Acquired axle, bogie, and car body vibration acceleration at 4,000 Hz from commercial KTX Train 36 along the Gwangmyeong–Osong railway corridor.
Processed signals using Butterworth filtering across low-, medium-, and high-frequency bands, calculated position-based moving root mean square (RMS) values, and identified statistical outliers.
Validated detected anomalies within a ±50 m tolerance window against 20 known track irregularity inspection locations and 388 confirmed rail defect sites.
Low-frequency bogie acceleration (10–40 Hz) successfully detected 40% of track irregularity inspection sites within ±50 m.
Combined frequency-band analysis identified 14.9% of 388 confirmed rail defect locations within the ±50 m window.
Locations flagged as outliers across multiple frequency bands simultaneously demonstrated higher concordance with confirmed physical track defects than single-band detections.

Implication

Validation study demonstrates vibration acceleration data detects track irregularities in high-speed rail networks, indicating strong potential for routine maintenance.

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Cite This Study

Choi et al. (2026) studied this question.

synapsesocial.com/papers/6a97e237c562ede874ec6353 https://doi.org/10.7782/jksr.2026.29.8.796

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Study on the Applicability of On-Board Acceleration Data from KTX Commercial Trains for High-Speed Railway Track Maintenance

Key Points

Implication

Abstract

Discussion

Cite This Study

Study on the Applicability of On-Board Acceleration Data from KTX Commercial Trains for High-Speed Railway Track Maintenance

Key Points

Implication

Abstract

Discussion

Cite This Study

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