Title page for ETD etd-01102005-191255

Type of Document Master's Thesis
Author Kothari, Vishal Pratap
Author's Email Address vkothari@vt.edu
URN etd-01102005-191255
Title Assessment of Dynamic Maintenance Management
Degree Master of Science
Department Industrial and Systems Engineering
Advisory Committee
Advisor Name Title
Triantis, Konstantinos P. Committee Chair
Keller, George Committee Member
Koelling, Charles Patrick Committee Member
Vaneman, Warren Committee Member
  • maintainability
  • preventive maintenance policies
  • System dynamics modeling
Date of Defense 2004-12-10
Availability unrestricted
Today’s technological systems are expected to perform at very high standards throughout

their operational phase. The cost associated with unavailability of these systems is very

high and especially with the defense systems or medical equipments which can directly

affect human lives. The maintenance system plays an important role in achieving higher

performance targets. In order to manage maintenance activities in more informed and

rational manner, it is very important to understand the inherently complex and dynamic

structure of the system. Traditionally maintenance policies are derived from reliability

characteristics of individual components or sub-systems. This research makes an attempt

to understand the system from the forest level and suggest better maintenance policies for

achieving higher availability and lower system degradation. The leverage is gained from

System Dynamics framework’s ability to model complex systems and capture various

feedback loops. The simulation results reveal that with the limited preventive

maintenance capacity and within the given assumptions of the model, there exists and

optimal preventive maintenance interval which is not the minimum. The simulation

results also reflect that frequent preventive maintenance is required at higher load factors.

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