TY - GEN
T1 - LOife-cycle analysis of deteriorating infrastructure systems
AU - Kumar, R.
AU - Gardoni, P.
PY - 2013
Y1 - 2013
N2 - Life-Cycle Analysis (LCA) is the process of predicting the performance of a system over its entire life-span (or life-cycle). In general, LCA may include assessment of the life-time reliability, the life-cycle cost and the benefit derived from having a system. LCA is useful in integrating all the stages of engineering a system (i.e., design, manufacturing and operation) in an efficient and optimal manner. Infrastructure systems are expensive to build, and their proper design and maintenance is essential for safety and economy. The objective of this work is to develop a general LCA model for engineering systems that may experience deterioration over time. The LCA models existing in the literature do not comprehensively present all the variables that affect engineering decisions and hence must be considered in LCA. Based on the proposed LCA model, we present analytical solutions, using renewal theory, to compute a number of LCA variables such as costs and benefits of operating a system, level of deterioration in the system and disruption in service. As an illustration of the model, an example is presented that represents a general deteriorating infrastructure system. The analysis shows the multi-faceted effect of engineering decisions on the life-cycle of a system.
AB - Life-Cycle Analysis (LCA) is the process of predicting the performance of a system over its entire life-span (or life-cycle). In general, LCA may include assessment of the life-time reliability, the life-cycle cost and the benefit derived from having a system. LCA is useful in integrating all the stages of engineering a system (i.e., design, manufacturing and operation) in an efficient and optimal manner. Infrastructure systems are expensive to build, and their proper design and maintenance is essential for safety and economy. The objective of this work is to develop a general LCA model for engineering systems that may experience deterioration over time. The LCA models existing in the literature do not comprehensively present all the variables that affect engineering decisions and hence must be considered in LCA. Based on the proposed LCA model, we present analytical solutions, using renewal theory, to compute a number of LCA variables such as costs and benefits of operating a system, level of deterioration in the system and disruption in service. As an illustration of the model, an example is presented that represents a general deteriorating infrastructure system. The analysis shows the multi-faceted effect of engineering decisions on the life-cycle of a system.
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M3 - Conference contribution
AN - SCOPUS:84892420839
SN - 9781138000865
T3 - Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures - Proceedings of the 11th International Conference on Structural Safety and Reliability, ICOSSAR 2013
SP - 1771
EP - 1776
BT - Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures - Proceedings of the 11th International Conference on Structural Safety and Reliability, ICOSSAR 2013
T2 - 11th International Conference on Structural Safety and Reliability, ICOSSAR 2013
Y2 - 16 June 2013 through 20 June 2013
ER -