health monitoring of structures related training...
TRANSCRIPT
Health Monitoring of StructuresHealth Monitoring of Structures
&&
Related Training Needs ofRelated Training Needs of
EngineersEngineers
Aftab Mufti
Scientific Director and President
Presented at CSHM2 ’08 Sicily, Italy
EngineersEngineers
SHM Presentation
SHM Assists Civil Structural Engineer to:
1. Innovate Structural Systems and Components
2. Integrate Different activities2. Integrate Different activities
3. Allow Intellectually Rewarding Structural
Engineering Education
ISIS Mandate
• The mandate of ISIS Canada
– is to revolutionize the design
– and construction– and construction
– of civil engineering structures
• So structures will last 100 years+100 years+ instead of 50 years
Mandate Realization
• We do this through
– Fibre Reinforced Polymers - FRPs
– Fibre Optic Sensors - FOSs– Fibre Optic Sensors - FOSs
– Structural Health Monitoring - SHM
– Innovative design and rehabilitation concepts
Dr. Man-Chung Tang, Chair of the Board, T.Y.Lin International
ASCE/SEI Workshop, Washington DC. Feb. 2008
Elbe Bridge – Germany - 1936
Aero-Engineering & Avionics
Aircraft BridgesTime
1900+
1950+
Bridge Structural Engineering
Salmon River Bridge – Canada - 1995
Portage Creek Bridge –Canada – 1983
1950+
2000
Avionics & Aero-Engineering
Space Shuttle Discovery - 2005
The Avro Canada CF-105 Arrow - 1957
Civionics + Bridge Structural
Engineering
Monitored Structure
System Components Schematic
Sensors
(various
types)
DA system
(on-site)
Communication System
(e.g. internet)
Data processing
(automatically by
computer)
Data Storage
(hard discs or CD archives)
Diagnostics
Data retrieval
(and decision
making)
Performance of a Structure
Analysis and Design
ConstructionOperation and Maintenance
In-service - lifetime In-service - lifetime
Performance
Structural Health Monitoring
Comments on Future of SHM
• Tool to address uncertainty in performance of field structures
– New materials and innovative designs
– Highly variable loads (trucks, wind, snow,
earthquakes)
– Extreme hazards and post-event– Extreme hazards and post-event
– Deterioration rate
– Fatigue
– Risk during construction or renovation
• Provide quantitative data to support bridge management
Field Assessment Results
1.5
2.0
Load Distribution FactorsTruck in South Lane
Lo
ad
Dis
trib
uti
on
Facto
r
Load Sharing0.0
0.5
1.0
1.5
1 2 3 4 5 6Girder Location
Measured
FEAL
oad
Dis
trib
uti
on
Facto
r
Current SHM & Transportation Information Systems
Located Around the Perimeter Highway
& Associated Routes
LEGEND:
AVC (Automatic Vehicle Classification)
PCS (Piezoelectric Counting Station)
WIM/AVC Weigh in Motion / Automatic
Vehicle Classification
Red River Bridge –Red River Bridge –
North Perimeter
Red River Bridge –
South Perimeter
Pavement &
FRP Dowels
Monitoring
A large truck on the Red River North Bridge captured by the web cameraA large truck on the Red River North Bridge captured by the web camera
Web Camera
LAYOUT OF THE BRIDGE
(Westbound traffic)
LANE I
LANE II
Girder 1
Girder 2
N
PASSING LANE
NORMAL LANE
FLOW OF TRAFFIC
Girder 3
Girder 4
Girder 5
ACCELERATINGLANE
SENSORS ON THE GIRDERS
East Bound
Traffic
West Bound
Traffic
Cross-section at 3 meters from center-line of bearing of span No. 10
• ESG 5 ESG 4 • ESG 3 • ESG 2 ESG1• •
East Bound
Traffic
West Bound
Traffic
Cross-section at mid span of span No. 10
• ESG 15 ESG 13 • ESG 10 • ESG 9 ESG 7• •
• ESG 14 ESG 12 • ESG 11 • ESG 8 ESG 6• •
SPEED OF VEHICLE
AXLE SPACINGS
AXLE LOADS
LOAD SHARING
LANE OF VEHICLE40
60
80
100
120
Truck Characteristics Estimation Program
TCEPV1.01 LANE OF VEHICLE
TOTAL LOAD
OVER SPEED TRIGGERS
OVERLOAD TRIGGERS
-20
0
20
40
1 10 19 28 37 46 55 64 73 82 91 100 109 118 127 136 145 154 163 172 181 190 199
ISIS Canada Research Network
• To advance civil engineering to a world leadership position, through development and application of:
– Fibre Reinforced Polymers (FRPs)
– Structural Health Monitoring (SHM)– Structural Health Monitoring (SHM)
for the benefit of Canadians (and others) through innovative and intelligent infrastructure
• The objective is to revolutionize the design of civil engineering structures…– while recognizing the resulting educational need
• A RESEARCH organization which has EDUCATION as a PRIMARY FOCUS
ISIS Canada Education Activities
• Documents
– manuals and guidelines
• Seminars and Workshops
• Graduate Courses• Graduate Courses
• Journals and Conferences
• Undergraduate Education Modules
Example: Module 5 on SHM
1. What is structural health monitoring?
2. Methodology
3. Sensor technology
4. Testing categories
Give the big 5. SHM system design
6. Case studies of SHM applications in Canada
7. Civionics specifications
8. Detailed example: SHM of the Golden Boy
9. The future of SHM
10. References and Additional Guidance
Give the big
picture. Not
only research.
Components
a)Notes
– In MS Word and PDF
– 20 to 30 page booklet– 20 to 30 page booklet
b)Slides (and handouts)
– In MS PowerPoint and PDF
– 0ver 500 slides to accompany notes
c)Worked examples
d)Suggested assignments (solution sets) and
laboratories (materials and support)
Australia, Austria, Belgium, Brazil, Canada, China, Denmark,
Dominican Republic, Egypt, Ethiopia, Finland, Germany, Greece, India, Iran, Japan, Korea, Kuwait, Malaysia, Nigeria, Pakistan, Philippines,
Portugal, Saudi Arabia, Singapore, South Africa, Switzerland, Thailand, Turkey, UAE, UK, USA, Yugoslavia
ISIS Canada Achievements & Future Work
• Updating ISIS design manuals used in 34 countries
• Influencing Public Policy by updating Canadian Codes of Practice: CHBDC and Building CSA Code
• International leadership in creating ISHMIIand IIFC
• Planned committee to develop guidelines for product certification of FRPs for manufacturers and owners
• 700 HQP (Graduate Students and Researchers)
• Education Committee success in gettingISIS technologies taught at the undergraduate levelISIS technologies taught at the undergraduate level
and in technical colleges
First Announcement and Call for Papers
Zurich, Switzerland22-24 July 2009
ETH, Swiss Federal Instituteof Technology
SHMII-4 2009shmii.empa.ch
The 4th International Conference on
Structural Health Monitoring of Intelligent Infrastructure
The 4th International Conference onStructural Health Monitoring of Intelligent Infrastructure