A short introduction to Integrated Vehicle Health Management (IVHM). The ten-minute presentation covers the origins, basics concepts, customer propositions to IVHM & a case study about Rolls Royce's engine health management.

1. Learning Objectives
• What is IVHM?
• General Concepts
• Case Study

2. The unified capability of a system to assess
the current or future state of the member
system health and integrate that picture of
systems health within a framework of
available resources and operational
demand.

3. Early Maintenance – Fix it when it breaks
Planned, Preventative Maintenance
Reliability-Centered Maintenance
Information Revolution
Changing Aftermarket Business Models

4. The IVHM
Concept
Communications
Technology
Sensor Integration
Systems & Decisions
Support Engineering

5. Monitor
Detect
Diagnosis
Prognosis
Repair/Mitigate
Verify
Generic IVHM Cycle
1. Checking & testing of
parameters against norms
2. Continuous monitoring
3. Full mission cycle systems
4. Adaptability &
reconfiguration of systems
5. Supporting post
operational maintenance

6. PerformanceorCondition
Time or Cycles
Normal Operation
Detection Threshold
Functional Failure Threshold

7. PerformanceorCondition
Time or Cycles
Inception of Failure
Detection of
(Potential) Failure

8. PerformanceorCondition
Time or Cycles
Time of Detection
Functional
Failure Point
Potential
Degradation Variation In
Remaining
Life
Prognostics

9. PerformanceorCondition
Time or Cycles
Time of Detection
Potential to Failure (P-F) Interval

10. PassiveFault
Management
&Diagnosis
Detectionand
Correctionof
IncipientFailures
Enhanced
Reliability
EnhancedAvailability
EnhancedAvailability,
Capability,andReadiness
Asset Maintenance
Operations
Fleet Management

11. Enhanced Availability,
Capability, and Readiness
•Technology
•Platform Health
Prognosis
Integrated with
Management
Processes
•Drivers
•Risk Managed
Growth from
Service
Provision
•Benefits
•Business Growth
•Maximised
Income from
Platform
Availability
Enhanced Availability
•Technology
•Subsystem
Diagnostics
Integrated with
Management
Process
•Drivers
•Changes in
Contracting
•Centralised
Integration of
Supporting
Services
•Benefits
•Optimised
Logistics
•Customer
Satisfaction &
Retention
•Detection of
User Induced
Damage
Enhanced Reliability
•Technology
•Subsystems
Diagnostics
•Drivers
•Reduced
Downtime
•Benefits
•Reduction in
Secondary
Damage Due
to Component
Failure
•Reduction in
Collateral
Damage From
Intrusive
Inspections
Detection and Correction
of Incipient Failures
•Technology
•Component
Diagnostics
•Drivers
•Insurance
•Prevention of
Lost
Productivity
•Reduced
Maintenance
Costs
•Benefits
•Improved
Productivity
•Reduction of
Maintenance
Costs
Passive Fault
Management & Diagnosis
•Technology
•Build in Test
•Drivers
•Legislation
•Integrity
Assurance
•Benefits
•Reduced
Accidents
•Reduced Field
Maintenance
Activities
•Reduce
Maintenance
expenditure

12. TotalCare®
• Power by the Hour™
• Buying the ‘Power’ not the
Engine
• Not paying for spare parts
• Engine Health Monitoring
• Transferred off the Aircraft
• Aircraft Communications
Addressing and Reporting
System (ACARS)
• VHF radio or satellite link
• Automated Analysis
• Operations Centre in Bristol

13. “The Trent
engine can be
fitted
permanently
with about 25
sensors. The
figure below
shows the
typical
parameters
measured for
[Engine Health
Mangement].”

14. Trent 900 fitted with an EHM box.
Customer Gets
• Reports
• Snapshots
• Unusual engine conditions
• Summary
• Guaranteed hours
• Forewarning of
Maintenance Downtime
Rolls Royce Gets
• Information on All
Engines
• Improve engines in operation
• Inform the design of the next
generation of engines

15. •
• HTTPS://WWW.SAE.ORG/PUBLICATIONS/BOOKS/CONTENT/R-405/
•
• HTTPS://WEB.ARCHIVE.ORG/WEB/20170414204628/HTTPS://WWW.ROLLS-ROYCE.COM/ABOUT/OUR-
TECHNOLOGY/ENABLING-TECHNOLOGIES/ENGINE-HEALTH-MANAGEMENT.ASPX#SENSE
• HTTPS://WWW.ROLLS-ROYCE.COM/PRODUCTS-AND-SERVICES/CIVIL-AEROSPACE/AFTERMARKET-
SERVICES.ASPX#/
•
• HTTPS://WWW.ESMT.ORG/SITES/DEFAULT/FILES/DIGITAL-
MEASURES/IVHM%20BUSINESS%20CASE%20FINAL%20DRAFT%20AUGUST%202010-1.PDF