Results 21 to 30 of about 182,089 (302)

An opportunistic maintenance strategy for wind turbines

open access: yesIET Renewable Power Generation, 2021
Maintenance strategies aim at reduction of the operation and maintenance cost of wind turbines. An opportunistic maintenance strategy offers cost advantages over the traditional preventive replacement maintenance strategy by considering cost dependency ...
Dameng Wang   +6 more
doaj   +1 more source

Sequential Preventive Maintenance Strategy Considering Difference of Maintenance Effect

open access: yesShanghai Jiaotong Daxue xuebao, 2023
Proper preventive maintenance can improve equipment reliability and prolong equipment life to a certain extent. Aimed at the problems that the decision granularity of the current preventive maintenance strategy is too large and the maintenance effect of ...
LI Xinlong, RAN Yan, ZHANG Genbao, HE Yan
doaj   +1 more source

A Data-Driven Maintenance Framework Under Imperfect Inspections for Deteriorating Systems Using Multitask Learning-Based Status Prognostics

open access: yesIEEE Access, 2021
This paper proposes a data-driven, condition-based maintenance framework (DCBM) for deteriorating equipment under the impact of varying environments and natural aging. The equipment's degradation status is determined by a prognostic and health monitoring
Lei Zhang, Jianguo Zhang
doaj   +1 more source

Wind Power Performance Optimization Considering Redundancy and Opportunistic Maintenance

open access: yesMendel, 2018
In This paper the redundancy and imperfect opportunistic maintenance optimization of a multi-state weighted k-out-of-n system is formulated. The objective is to determine the k-out-of-n system redundancy level and the maintenance strategy which will ...
Hadi Abdollahzadeh Sangroudi
doaj   +1 more source

Availability Optimization of Two-dimensional Warranty Products Under Imperfect Preventive Maintenance

open access: yesIEEE Access, 2021
For complex and durable products such as automobiles and construction machinery, the quality and reliability characteristics of these products become more and more complex.
Rongcai Wang   +4 more
doaj   +1 more source

Research on Pricing of Flexible Two-Dimensional Extended Warranty Considering Preventive Maintenance

open access: yesXibei Gongye Daxue Xuebao, 2019
Facing the uncertainty in transaction of two-dimensional extended warranty, a flexible pricing model is presented considering imperfect preventive maintenance combined with the degradation characteristics of item.

doaj   +1 more source

Updating the Merger Guidelines: Comments [PDF]

open access: yes, 2009
These comments (originally submitted to the DOJ and FTC in November 2009) make a number of comments relevant to revising the Merger Guidelines. The comments focus on the use of the GUPPI (gross upward pricing pressure index) in unilateral effects ...
Moresi, Serge, Salop, Steven C.
core   +2 more sources

Preventive Maintenance Optimization of Electric Multiple Units Based on a Bi-Level Imperfect Maintenance Strategy

open access: yesIEEE Access
A preventive maintenance (PM) optimization policy based on a bi-level imperfect maintenance strategy was proposed for electric multiple unit equipment subject to continuous degradation, consistent with actual PM situations.
Lv Xiong   +3 more
doaj   +1 more source

A Two-dimensional Maintenance Service Contract Considering Availability and Maintenance Cost

open access: yesInternational Journal of Technology, 2023
In this paper, we study a two- dimensional Maintenance Service Contract (MSC) characterized by two limits (dimensions) of age and usage. It is considered that an agent offers a two-dimensional MSC by guaranteeing a certain level of equipment available
Nur Faizatus Sa’idah   +3 more
doaj   +1 more source

Aging as a consequence of misrepair -- A novel theory of aging [PDF]

open access: yes, 2009
It is now increasingly realized that the underlying mechanisms which govern aging is a complex interplay of genetic regulation and damage accumulation. Aging as a result of accumulation of ‘faults’ on cellular and molecular levels, has been
Arne Wunderlin   +3 more
core   +4 more sources

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