Availability analysis and maintenance optimization for multiple failure mode systems considering imperfect repair

Qiu, Qingan; Liu, Baoliang; Lin, Cong; Wang, Jingjing

doi:10.1177/1748006x211012792

Cited by 21 publications

(9 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the reliability field, when the replacement cycle or time span is given, the availability and average/expected cost rate are two functions that have been used as optimization objective functions. The first function is composed of two time measures (see Qiu et al [36][37][38][39][40]); the second function is composed of one time measure and one cost (see Peng et al [41]).…”

Section: Average Cost Ratesmentioning

confidence: 99%

Random Maintenance Strategy Modeling of Warranted Products with Reliability Heterogeneity

Ma,

Du,

Shang

et al. 2023

Sustainability

View full text Add to dashboard Cite

Using monitored job cycles to design and model random maintenance strategies for ensuring life-cycle reliability has been extensively researched. The reliability heterogeneity over the life cycle has been ignored universally in this type of strategy. In this paper, using two different areas of regions that can screen reliability, two random maintenance strategies were customized for the life-cycle reliabilities of warrantied products with monitored job cycles to be ensured based on reliability heterogeneity. In the case of using minimal repair, the first one was flexibly customized depending on whether the first failure occurs in the region consisting of limited job cycles or a period of warranty service, whichever occurs first. Such a strategy is called flexible repair warranty first (FRWF) and can be used to ensure warranty-stage reliability during a product’s life cycle. The FRWF strategy is modeled from the perspectives of cost and time measures. Based on whether the first failure of the product through its FRWF occurs in another region, random periodic replacement (RPR) and classic periodic replacement (CPR) are triggered to customize the second one, which is named bivariate customized random maintenance (BCRM) because two decision variables are considered. The BCRM and its variants are modeled from the perspectives of the average cost rates. Finally, numerical analysis of some of the customized strategies was performed from the numerical perspective. Numerical analysis showed that the presented FRWF is superior to the classic free repair warranty (FRW) strategy because the servicing time of the presented FRWF strategy is longer than the servicing time of the classic FRW strategy at the same cost.

show abstract

Section: Average Cost Ratesmentioning

confidence: 99%

Random Maintenance Strategy Modeling of Warranted Products with Reliability Heterogeneity

Ma,

Du,

Shang

et al. 2023

Sustainability

View full text Add to dashboard Cite

show abstract

“…The product deteriorates with respect to its working time and its time-to-first-failure X is subject to a general distribution function FðxÞ ¼ PrfX < xg with a failure rate function rðuÞ, where u > 0. Maintenance time (Liao et al, 2006) and repair time (Levitin et al, 2015;Qiu et al, 2021b) were considered in the model, but it is assumed that replacement time is negligible completely in this article.…”

Section: Warranty Modelsmentioning

confidence: 99%

“…, 2006) and repair time (Levitin et al. , 2015; Qiu et al. , 2021b) were considered in the model, but it is assumed that replacement time is negligible completely in this article.…”

Section: Warranty Modelsmentioning

confidence: 99%

Random replacement policies to sustain the post-warranty reliability

Shang

Qiu

et al. 2022

JQME

Self Cite

View full text Add to dashboard Cite

PurposeThe study aims to design the limited number of random working cycle as a warranty term and propose two types of warranties, which can help manufacturers to ensure the product reliability during the warranty period. By extending the proposed warranty to the consumer's post-warranty maintenance model, besides the authors investigate two kinds of random maintenance policies to sustain the post-warranty reliability, i.e. random replacement first and random replacement last. By integrating depreciation expense depending on working time, the cost rate is constructed for each random maintenance policy and some special cases are provided by discussing parameters in cost rates. Finally, sensitivities on both the proposed warranty and random maintenance policies are analyzed in numerical experiments.Design/methodology/approachThe working cycle of products can be monitored by advanced sensors and measuring technologies. By monitoring the working cycle, manufacturers can design warranty policies to ensure product reliability performance and consumers can model the post-warranty maintenance to sustain the post-warranty reliability. In this article, the authors design a limited number of random working cycles as a warranty term and propose two types of warranties, which can help manufacturers to ensure the product reliability performance during the warranty period. By extending a proposed warranty to the consumer's post-warranty maintenance model, the authors investigate two kinds of random replacement policies to sustain the post-warranty reliability, i.e. random replacement first and random replacement last. By integrating a depreciation expense depending on working time, the cost rate is constructed for each random replacement and some special cases are provided by discussing parameters in the cost rate. Finally, sensitivities to both the proposed warranties and random replacements are analyzed in numerical experiments.FindingsIt is shown that the manufacturer can control the warranty cost by limiting number of random working cycle. For the consumer, when the number of random working cycle is designed as a greater warranty limit, the cost rate can be reduced while the post-warranty period can't be lengthened.Originality/valueThe contribution of this article can be highlighted in two key aspects: (1) the authors investigate early warranties to ensure reliability performance of the product which executes successively projects at random working cycles; (2) by integrating random working cycles into the post-warranty period, the authors is the first to investigate random maintenance policy to sustain the post-warranty reliability from the consumer's perspective, which seldom appears in the existing literature.

show abstract

“…Here, we ignore the impact of downtime on C T . Therefore, considering the above cost, we can obtain the optimal inspection model as the follows 39 :…”

Section: Optimizing Of the Pipeline’s Inspection Plansmentioning

confidence: 99%

Optimizing inspection plan for corroded pipeline with considering imperfect maintenance

Wang

Xie

2022

Proceedings of the Institution of Mechanical Engineers, Part O:

View full text Add to dashboard Cite

Metal-loss corrosion may result in pipeline’s failure and expensive downtime loss. Thus, to keep the pipeline’s normal operation, it is crucial to draw up scientific inspection and maintenance plans. This study is to optimize the inspection plan for corroded pipeline. Limit state functions are established for the corrosion leakage and burst respectively, and the pipeline’s failure probability is obtained with Monte Carlo simulation. The pipeline’s failure probability is further evaluated by the copula function and with considering the correlation of different failure modes. Moreover, a hybrid failure rate model is developed to update the pipeline’s failure probability, where the age reduction factor and failure rate increase factor are adopted, and imperfect maintenance is taken into account. On this basis, an optimization model is established with the objective to minimize the total maintenance cost, and genetic algorithm is applied to optimize the inspection plans. A case study is conducted, and the optimal results are analyzed according to acceptable maximum failure probability characteristics for the areas with different risk levels. The results show that periodic inspection and perfect maintenance are suitable for high-risk areas, and the proposed inspection plan is more suitable for corroded pipeline in low or medium-risk areas.

show abstract

Availability analysis and maintenance optimization for multiple failure mode systems considering imperfect repair

Cited by 21 publications

References 60 publications

Random Maintenance Strategy Modeling of Warranted Products with Reliability Heterogeneity

Random Maintenance Strategy Modeling of Warranted Products with Reliability Heterogeneity

Random replacement policies to sustain the post-warranty reliability

Optimizing inspection plan for corroded pipeline with considering imperfect maintenance

Contact Info

Product

Resources

About