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Software Driven Optimal Design for Maintenance Man Hour

  • Antony Gratas VaruvelEmail author
  • Rajendra Prasath
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11308)

Abstract

Cost of ownership of a capital item, increases exponentially, as the age of the equipment increases. Maintenance efforts involved in optimally maintaining the item procured, is determined predominantly by the Mean Time Between Failure [MTBF], Mean Time to Repair [MTTR] in addition to the required Man Hours. Knowing the faults and prognostics prior to failures will result in significant reduction in down time and the cost of maintenance. Software plays vital role in this regard, along with the required instrumentation in capturing and forecasting the anticipated failures and inform well in advance the maintenance requirements of the particular item. This paper describes in detail about designing an item, with the perspective of optimizing the maintenance efforts and cost, by using software techniques as one of the design parameters. MMH/OH is one among the terminologies used to describe, the amount of efforts required in terms of time, to operate a system [fly an aircraft/drive a car] for an hour in the normalized scale. Starting with the allocation of MMH/OH target, to systems, subsystems and LRUs [Line Replaceable Unit], realization of the target MMH/OH is dealt with, in detail, using software enabled control and communication. The proposed model and technique has been validated with a typical fighter aircraft.

Keywords

Availability LRU MMH/FH MMH/OH MSF MTBF MTTR Scheduled maintenance Unscheduled maintenance Reliability 

Abbreviation Acronyms

BD

Base Depot

BIT

Built In Test

D

Depot

DC

Duty Cycle

DfM

Design for Maintenance

DMU

Digital Mock Up

EMTBF

Effective Mean Time Between Failure

EMTTF

Effective Mean Time to Failure

FH

Flight Hour

FT

Fault Tolerance

FTF

Fault Tolerance Factor

GSE

Ground Support Equipment

IVHM

Integrated Vehicle Health Management

IVR

Immersive Virtual Reality

LCC

Life Cycle Cost

LRU

Line Replaceable Unit

MDT

Mean Down Time

MMH

Maintenance Man Hour

MSF

Maintenance Significant Factor

MTBF

Mean Time Between Failure

MTTF

Mean Time to Failure

OH

Operational Hour

PHM

Prognostics Health Management

pdf

Probability Density Function

\( R{ \& }M\)

Reliability and Maintainability

RAMS

Reliability, Availability, Maintainability and Safety

RSF

Reliability Significant Factor

SCM

Scheduled Maintenance

USCM

Unscheduled Maintenance

VR

Virtual Reality

Notes

Acknowledgment

This research work was executed in Aeronautical Development Agency, Bangalore-INDIA.

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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  1. 1.Aeronautical Development AgencyMinistry of Defence, Government of IndiaBangaloreIndia
  2. 2.Indian Institute of Information Technology, Sri CityChittoorIndia

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