Economic Life Cycle <i>versus</i> Lifespan – A Case Study of an Urban Bus Fleet

Hugo Raposo; José Torres Farinha; Inácio Fonseca; Diego Galar

doi:doi:10.11648/j.eas.20190402.12

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Economic Life Cycle versus Lifespan – A Case Study of an Urban Bus Fleet

Hugo Raposo, José Torres Farinha, Inácio Fonseca, Diego Galar

Published in Engineering and Applied Sciences (Volume 4, Issue 2)

Received: 17 October 2018 Accepted: 7 November 2018 Published: 10 June 2019

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Abstract

The maintenance policy and the quality of service throughout the bus’s life cycle can be measured through their costs along time that, when evaluated using Lifespan or Economic Life Cycle methods, allow to determine the renewal or the replacement time. The paper discusses these two models, using real data from an urban bus fleet company. The maths that supports the models are presented. They are considered the functioning and maintenance costs, and also the apparent rate. The Life Cycle Cost of an urban transport bus is strongly dependent on the policy and quality of its maintenance, from which it depends on its reliability and availability. The final result is reflected on its Life Cycle Cost, that can be evaluated through the Lifespan or the Economic Life Cycle methods. Other aspects that can be considered are the fuel costs and the type of terrain, because they are intrinsically interrelated and have a strong effect on costs, namely because they imply strong variation in the bus’s consumption and in their maintenance costs. As the company considered in the case study has a poor maintenance policy, it makes the analysis challenging, making difficult to compare the economic life cycle with the lifespan method in this situation. However, the results and conclusions that are taken from them are obvious, what demonstrates the models’ utility and robustness.

Published in	Engineering and Applied Sciences (Volume 4, Issue 2)
DOI	10.11648/j.eas.20190402.12
Page(s)	30-43
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Equipment Removal, LCC, Lifespan, Assignment, Condition Monitoring, Scheduled Maintenance

References

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APA Style

Hugo Raposo, José Torres Farinha, Inácio Fonseca, Diego Galar. (2019). Economic Life Cycle versus Lifespan – A Case Study of an Urban Bus Fleet. Engineering and Applied Sciences, 4(2), 30-43. https://doi.org/10.11648/j.eas.20190402.12

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ACS Style

Hugo Raposo; José Torres Farinha; Inácio Fonseca; Diego Galar. Economic Life Cycle versus Lifespan – A Case Study of an Urban Bus Fleet. Eng. Appl. Sci. 2019, 4(2), 30-43. doi: 10.11648/j.eas.20190402.12

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AMA Style

Hugo Raposo, José Torres Farinha, Inácio Fonseca, Diego Galar. Economic Life Cycle versus Lifespan – A Case Study of an Urban Bus Fleet. Eng Appl Sci. 2019;4(2):30-43. doi: 10.11648/j.eas.20190402.12

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@article{10.11648/j.eas.20190402.12,
  author = {Hugo Raposo and José Torres Farinha and Inácio Fonseca and Diego Galar},
  title = {Economic Life Cycle versus Lifespan – A Case Study of an Urban Bus Fleet},
  journal = {Engineering and Applied Sciences},
  volume = {4},
  number = {2},
  pages = {30-43},
  doi = {10.11648/j.eas.20190402.12},
  url = {https://doi.org/10.11648/j.eas.20190402.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.eas.20190402.12},
  abstract = {The maintenance policy and the quality of service throughout the bus’s life cycle can be measured through their costs along time that, when evaluated using Lifespan or Economic Life Cycle methods, allow to determine the renewal or the replacement time. The paper discusses these two models, using real data from an urban bus fleet company. The maths that supports the models are presented. They are considered the functioning and maintenance costs, and also the apparent rate. The Life Cycle Cost of an urban transport bus is strongly dependent on the policy and quality of its maintenance, from which it depends on its reliability and availability. The final result is reflected on its Life Cycle Cost, that can be evaluated through the Lifespan or the Economic Life Cycle methods. Other aspects that can be considered are the fuel costs and the type of terrain, because they are intrinsically interrelated and have a strong effect on costs, namely because they imply strong variation in the bus’s consumption and in their maintenance costs. As the company considered in the case study has a poor maintenance policy, it makes the analysis challenging, making difficult to compare the economic life cycle with the lifespan method in this situation. However, the results and conclusions that are taken from them are obvious, what demonstrates the models’ utility and robustness.},
 year = {2019}
}

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TY  - JOUR
T1  - Economic Life Cycle versus Lifespan – A Case Study of an Urban Bus Fleet
AU  - Hugo Raposo
AU  - José Torres Farinha
AU  - Inácio Fonseca
AU  - Diego Galar
Y1  - 2019/06/10
PY  - 2019
N1  - https://doi.org/10.11648/j.eas.20190402.12
DO  - 10.11648/j.eas.20190402.12
T2  - Engineering and Applied Sciences
JF  - Engineering and Applied Sciences
JO  - Engineering and Applied Sciences
SP  - 30
EP  - 43
PB  - Science Publishing Group
SN  - 2575-1468
UR  - https://doi.org/10.11648/j.eas.20190402.12
AB  - The maintenance policy and the quality of service throughout the bus’s life cycle can be measured through their costs along time that, when evaluated using Lifespan or Economic Life Cycle methods, allow to determine the renewal or the replacement time. The paper discusses these two models, using real data from an urban bus fleet company. The maths that supports the models are presented. They are considered the functioning and maintenance costs, and also the apparent rate. The Life Cycle Cost of an urban transport bus is strongly dependent on the policy and quality of its maintenance, from which it depends on its reliability and availability. The final result is reflected on its Life Cycle Cost, that can be evaluated through the Lifespan or the Economic Life Cycle methods. Other aspects that can be considered are the fuel costs and the type of terrain, because they are intrinsically interrelated and have a strong effect on costs, namely because they imply strong variation in the bus’s consumption and in their maintenance costs. As the company considered in the case study has a poor maintenance policy, it makes the analysis challenging, making difficult to compare the economic life cycle with the lifespan method in this situation. However, the results and conclusions that are taken from them are obvious, what demonstrates the models’ utility and robustness.
VL  - 4
IS  - 2
ER  -

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Author Information

Hugo Raposo

Department of Mechanical Engineering, Centre for Mechanical Engineering, Materials and Processes, Coimbra University, Coimbra, Portugal
José Torres Farinha

Department of Mechanical Engineering, Centre for Mechanical Engineering, Materials and Processes, Coimbra University, Coimbra, Portugal
Inácio Fonseca

Department of Mechanical Engineering, Centre for Mechanical Engineering, Materials and Processes, Coimbra University, Coimbra, Portugal
Diego Galar

Department of Civil, Environmental and Natural Resources Engineering, Lulea University of Technology, Lulea, Sweden

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APA Style

Hugo Raposo, José Torres Farinha, Inácio Fonseca, Diego Galar. (2019). Economic Life Cycle versus Lifespan – A Case Study of an Urban Bus Fleet. Engineering and Applied Sciences, 4(2), 30-43. https://doi.org/10.11648/j.eas.20190402.12

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ACS Style

Hugo Raposo; José Torres Farinha; Inácio Fonseca; Diego Galar. Economic Life Cycle versus Lifespan – A Case Study of an Urban Bus Fleet. Eng. Appl. Sci. 2019, 4(2), 30-43. doi: 10.11648/j.eas.20190402.12

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AMA Style

Hugo Raposo, José Torres Farinha, Inácio Fonseca, Diego Galar. Economic Life Cycle versus Lifespan – A Case Study of an Urban Bus Fleet. Eng Appl Sci. 2019;4(2):30-43. doi: 10.11648/j.eas.20190402.12

Copy | Download

@article{10.11648/j.eas.20190402.12,
  author = {Hugo Raposo and José Torres Farinha and Inácio Fonseca and Diego Galar},
  title = {Economic Life Cycle versus Lifespan – A Case Study of an Urban Bus Fleet},
  journal = {Engineering and Applied Sciences},
  volume = {4},
  number = {2},
  pages = {30-43},
  doi = {10.11648/j.eas.20190402.12},
  url = {https://doi.org/10.11648/j.eas.20190402.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.eas.20190402.12},
  abstract = {The maintenance policy and the quality of service throughout the bus’s life cycle can be measured through their costs along time that, when evaluated using Lifespan or Economic Life Cycle methods, allow to determine the renewal or the replacement time. The paper discusses these two models, using real data from an urban bus fleet company. The maths that supports the models are presented. They are considered the functioning and maintenance costs, and also the apparent rate. The Life Cycle Cost of an urban transport bus is strongly dependent on the policy and quality of its maintenance, from which it depends on its reliability and availability. The final result is reflected on its Life Cycle Cost, that can be evaluated through the Lifespan or the Economic Life Cycle methods. Other aspects that can be considered are the fuel costs and the type of terrain, because they are intrinsically interrelated and have a strong effect on costs, namely because they imply strong variation in the bus’s consumption and in their maintenance costs. As the company considered in the case study has a poor maintenance policy, it makes the analysis challenging, making difficult to compare the economic life cycle with the lifespan method in this situation. However, the results and conclusions that are taken from them are obvious, what demonstrates the models’ utility and robustness.},
 year = {2019}
}

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TY  - JOUR
T1  - Economic Life Cycle versus Lifespan – A Case Study of an Urban Bus Fleet
AU  - Hugo Raposo
AU  - José Torres Farinha
AU  - Inácio Fonseca
AU  - Diego Galar
Y1  - 2019/06/10
PY  - 2019
N1  - https://doi.org/10.11648/j.eas.20190402.12
DO  - 10.11648/j.eas.20190402.12
T2  - Engineering and Applied Sciences
JF  - Engineering and Applied Sciences
JO  - Engineering and Applied Sciences
SP  - 30
EP  - 43
PB  - Science Publishing Group
SN  - 2575-1468
UR  - https://doi.org/10.11648/j.eas.20190402.12
AB  - The maintenance policy and the quality of service throughout the bus’s life cycle can be measured through their costs along time that, when evaluated using Lifespan or Economic Life Cycle methods, allow to determine the renewal or the replacement time. The paper discusses these two models, using real data from an urban bus fleet company. The maths that supports the models are presented. They are considered the functioning and maintenance costs, and also the apparent rate. The Life Cycle Cost of an urban transport bus is strongly dependent on the policy and quality of its maintenance, from which it depends on its reliability and availability. The final result is reflected on its Life Cycle Cost, that can be evaluated through the Lifespan or the Economic Life Cycle methods. Other aspects that can be considered are the fuel costs and the type of terrain, because they are intrinsically interrelated and have a strong effect on costs, namely because they imply strong variation in the bus’s consumption and in their maintenance costs. As the company considered in the case study has a poor maintenance policy, it makes the analysis challenging, making difficult to compare the economic life cycle with the lifespan method in this situation. However, the results and conclusions that are taken from them are obvious, what demonstrates the models’ utility and robustness.
VL  - 4
IS  - 2
ER  -

Copy | Download