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- Shafiee, Mahmood, 1982, et al.
(författare)
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An optimal age–usage maintenance strategy containing a failure penalty for application to railway tracks
- 2016
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Ingår i: Proceedings of the Institution of mechanical engineers. Part F, journal of rail and rapid transit. - : SAGE Publications. - 0954-4097 .- 2041-3017. ; 230:2, s. 407-417
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Tidskriftsartikel (refereegranskat)abstract
- Railway track maintenance plays a key role in enhancing the reliability and safety of railway transportation, as it reduces the potential risks of defects and derailments. A railway track degrades over time, due to its cumulative usage (in terms of million gross tons) that results from traffic movements. When the cumulative usage reaches a failure threshold, the railway track breaks and has to be replaced with a new section. Moreover, the infrastructure owner charges the maintenance agent a specific penalty due to traffic disrruption and passenger dissatisfaction. To avoid such costly defects,the railway tracks must be preventively replaced at regular time intervals. In this paper, we propose an optimal bivariate(age–usage) maintenance strategy for railway tracks such that the average long-run maintenance cost per unit time is minimized. The proposed model is applied to 60E1 track on a small part of the Swedish heavy haul line ‘Malmbanan’, and the results are compared with two conventional age-based and usage-based maintenance policies. The results show that the proposed maintenance policy has a substantial potential to reduce the servicing costs of railway track maintenance.
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- Shafiee, Mahmood, 1982, et al.
(författare)
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Maintenance models in warranty: A literature review
- 2013
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Ingår i: European Journal of Operational Research. - : Elsevier BV. - 0377-2217. ; 229:3, s. 561-572
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Tidskriftsartikel (refereegranskat)abstract
- Along with increasing the warranty period for complex systems, reducing the warranty servicing costs has become an issue of great importance to the manufacturers. One possible way to reduce the expected warranty servicing cost is by making sound decision on the product warranty and maintenance strategies. Therefore, warranties (basic warranty and extended warranty) and maintenance (corrective and preventive) are strongly interlinked and of great interest to both manufacturers and customers. This paper is the first identifiable academic literature review to deal with warranty and maintenance. It provides a classification scheme for the articles that link warranty and maintenance published between 2001 and 2011 covering 44 journals and proposes a taxonomy scheme to classify these articles. Nine hundred articles were identified for their relevance to warranty and were carefully reviewed. One-hundred and twenty-two articles were subsequently selected for their relevance to maintenance and included in the classification. (c) 2013 Elsevier B.V. All rights reserved.
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| 4. |
- Shafiee, Mahmood, 1982, et al.
(författare)
-
Maintenance models in warranty: A literature review
- 2013
-
Ingår i: European Journal of Operational Research. - : Elsevier BV. - 0377-2217. ; 229:3, s. 561-572
-
Tidskriftsartikel (refereegranskat)abstract
- Along with increasing the warranty period for complex systems, reducing the warranty servicing costs has become an issue of great importance to the manufacturers. One possible way to reduce the expected warranty servicing cost is by making sound decision on the product warranty and maintenance strategies. Therefore, warranties (basic warranty and extended warranty) and maintenance (corrective and preventive) are strongly interlinked and of great interest to both manufacturers and customers. This paper is the first identifiable academic literature review to deal with warranty and maintenance. It provides a classification scheme for the articles that link warranty and maintenance published between 2001 and 2011 covering 44 journals and proposes a taxonomy scheme to classify these articles. Nine hundred articles were identified for their relevance to warranty and were carefully reviewed. One-hundred and twenty-two articles were subsequently selected for their relevance to maintenance and included in the classification. (c) 2013 Elsevier B.V. All rights reserved.
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