Imperfect rail-track inspection scheduling with zero-inflated miss rates
Despite the technological advances in track monitoring, track quality control systems are not always reliable. Inspections may miss defects; all defects may not be registered or recorded due to human or mechanical errors. In this study, first, the authors develop a zero-inflated Bayesian approach to model the rate of missed defects during imperfect inspections where defect arrivals follow a Poisson process. The proposed model reveals information on two parameters: the actual defect arrival rate and the probability of not finding any defects, namely, the zero-inflation rate. Then, the authors study optimizing the track maintenance based on this model. The authors demonstrate that a temporal threshold-type inspection policy is optimal, and they derive this threshold under imperfect inspections. Furthermore, the authors implement a Gibbs sampler for drawing inferences on the posterior distribution of the aforementioned Poisson process parameters from data. Application results provide a realistic perspective on imperfect inspections and offer risk and cost savings in railway systems and, by and large, in other imperfect maintenance systems.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/0968090X
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Supplemental Notes:
- © 2022 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
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Authors:
- Altay, Ayça
- Baykal-Gürsoy, Melike
- Publication Date: 2022-5
Language
- English
Media Info
- Media Type: Web
- Features: Figures; References; Tables;
- Pagination: 103608
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Serial:
- Transportation Research Part C: Emerging Technologies
- Volume: 138
- Issue Number: 0
- Publisher: Elsevier
- ISSN: 0968-090X
- Serial URL: http://www.sciencedirect.com/science/journal/0968090X
Subject/Index Terms
- TRT Terms: Defects; Inspection; Mathematical models; Optimization; Quality control; Railroad tracks; Scheduling
- Subject Areas: Maintenance and Preservation; Planning and Forecasting; Railroads; Terminals and Facilities;
Filing Info
- Accession Number: 01842128
- Record Type: Publication
- Files: TRIS
- Created Date: Apr 11 2022 10:46AM