Embed Size (px)
Citation preview
BOEING is a trademark of Boeing Management Company.Copyright © 2008 Boeing. All rights reserved.
Structural Health Management/Monitoring
Arne LewisThe Boeing Co.
Structures Service EngineerNew Airplane Product Development
BOEING is a trademark of Boeing Management Company.Copyright © 2008 Boeing. All rights reserved.
Structural Health ManagementStructural Health Management
Definition and Development
Testing
Implementation
Benefits
BOEING is a trademark of Boeing Management Company.Copyright © 2008 Boeing. All rights reserved.
What Is SHM?What Is SHM?
SHM is a structural condition assessment system using sensor technology and flight parameters that can potentially monitor airplane loads and structural damage
Accidental and fatigueLoad monitoring Load exceedance (hard and heavy landing)
SHM-011S
train
(mic
rost
rain
)-600-400-200
0200400600800
100012001400
0 200 400 600 800 1000 12001400 1600
Measured Predicted ErrorNzLat accelLong accelPitch accelRoll accelYaw accelMachGross weightQPitch rateRoll rateYaw rateAOAAOSSAltitudeFrozen CGFuse. CGAileronRudderStab
.
.
.
.
.
.
Virt
ual s
trai
ns
•Flig
ht p
aram
eter
s•M
inim
al s
truc
tura
l se
nsor
s
Legend:
Neural network
Definition and Development
BOEING is a trademark of Boeing Management Company.Copyright © 2008 Boeing. All rights reserved.
Two embedded layersThree part surface mounted layers bonded to inner mold line
Accidental Damage Sensors InstalledAccidental Damage Sensors Installed
–3.7
0
3.7S
enso
r out
put
20
Path 9->13 at 440 kHz
Group velocity = 2.3km/s
No crack 18mm crack
56Time, μsec
SHM-010
str
str
str
BS
BS
WL
Definition and Development
BOEING is a trademark of Boeing Management Company.Copyright © 2008 Boeing. All rights reserved.
Phased Implementation of SHMPhased Implementation of SHM
What will it take to implement SHM?Laboratory testing In-service testing
Industry working togetherUnderstanding issues and working together to resolve issues
Qualification of SHM as part of airplane maintenanceAlgorithm development
BOEING is a trademark of Boeing Management Company.Copyright © 2008 Boeing. All rights reserved.
Implementation in PhasesImplementation in Phases
Initial Discovery
Testing/Algorithm Development
Working Group Development (CAWG)
Phase I – Passive Damage Detection and Flight Parameter monitoring
Phase II – Active Damage Detection
BOEING is a trademark of Boeing Management Company.Copyright © 2008 Boeing. All rights reserved.
SHM BenefitsSHM Benefits
Reduced operating cost
First step in progression to condition-based structural maintenance
Longer economical airframe utilization
Structural inspection tasks customized for each airplane
BOEING is a trademark of Boeing Management Company.Copyright © 2008 Boeing. All rights reserved.
SHM Benefits (Con’t)SHM Benefits (Con’t)
Could be adapted to current fleet
Possible third option in Service Bulletins: Monitoring
Determine the extent of damage in areas prone to accidental damage
Open architecture allowance to expand upon existing system after airplane entry to service
Lighter future commercial airplanes
BOEING is a trademark of Boeing Management Company.Copyright © 2008 Boeing. All rights reserved.
SHM Issue PaperSHM Issue Paper
SHM definition developed by Working Group Members (ATA, Airbus, Boeing, Bombardier, Embraer, FAA and others)
Requesting that SHM definition be placed in ATA MSG-3, Appendix A
Requesting that section 2-4-2 “Scheduled Structural Maintenance” be revised to add SHM as a recognized technology.
BOEING is a trademark of Boeing Management Company.Copyright © 2008 Boeing. All rights reserved.
SummarySummary
SHM has potential to reduce airplane structural maintenance cost
Testing and development of SHM technology in progress
Work with airplane operators and regulators to gain acceptance in the industry
BOEING is a trademark of Boeing Management Company.Copyright © 2008 Boeing. All rights reserved.
Thank You!Thank You!
