us rt 23 wayne bridge test
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US Rt 23 Wayne Bridge Test. US Rt 23 Wayne Bridge Test. S. Paul Sumitro, Ph.D, PE Chris Roney www.smart-structures.com. Leading the technology in Structural Health Monitoring. Presentation outline. Presentation outline. What Smart Structures is Innovative sensory technology - PowerPoint PPT PresentationTRANSCRIPT
US Rt 23 Wayne Bridge Test
Leading the technology in Structural Health Monitoring
S. Paul Sumitro, Ph.D, PEChris Roney
www.smart-structures.com
US Rt 23 Wayne Bridge Test
Presentation outline
What Smart Structures isInnovative sensory technology Smart Scanner Stick Scanner Telecentric (deflection) Telecentric (strain)
Presentation outline
Schematic description of SHMS
Software for Bridge Health Monitoring
SHMS System
June 10 -11, 2011
KRC Japan – Smart Structures USA
Wayne Bridge Rt. 23 NJ
KRC Japan – Smart Structures USA
Wayne team
Full-field Optical Monitoring Techniques
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- Smart Scanner: strain, stress
investigate internal concrete structures
- Stick Scanner:
- Strain- deflection
- Telecentric:
OVERVIEW
• As the first step to evaluate bridge’s condition, field load test is needed to assure bridge’s safety level
• Troublesome in load test: - Sensor installation; - cabling
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Smart Scanner
• Non-destructive and non-contact: • No scaffolding, no attachment , no cabling;
• Speedy and appropriate information: • not only point-wise data, but also planar
information;• No image-warp: constant focus and constant
distance; • High resolution:
• surface strain measurement, • user-friendly software based on digital image
correlation method. 10
Line Sensing Scanner
Flat head Image Scanner
★Resolution: 4800dpi
★ Wide range
Constant brightness(fix attachment,no external effect)
★
Simple and low cost★
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Flat Head Image Scanner
Driving shaft (motor, guiderail, timing belt)
Light Source
Line sensor
glass
CIS (Contact Image Sensor)
Primary Scanning direction
Secondary Scanning Direction
No lens (no aberration)
Light, compact, low cost
○
○
The resolution in secondary direction is lower than primary direction
×
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Digitalized Image Correlation Analyses
Deformed
Pre-deformed
Range
Scanner
Sub set (N×N)
Deformed
Pre-deformed
Sub set (N×N)
Pre-deformed
Deformed
Pixel Digitalized
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Concrete Wood
14
Steel
15
turnable
高さ調節ネジ
ラ イ ン センサ
Full field scanner sensor
Line sensor
Fixer
Rotary table
shield
Full-field Scanner
Smart Scanner
Leg
Window
Micrometer adjuster
Focal digital meter
Thermometer ( surface )
Thermometer ( sensor )
Battery
RearSecondary
Primary dirLine sensor
Scanning bar
Stepping motor
Linear encoder
Front
Corrosive crack at pier cap
Crack gauge
Measured data
Studs and mounts
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Studs
Mounts
Smart Scanner installation
Crack width and crack distribution
Stick Scanner
Full field investigation, small drilled hole
Core○Material analyses
Endoscope
○low cost, constructability○Micro destructive
Combine pros
Handy scannerStick Scanner development
×structural destructive
×Narrow field
Development background
×crack broken core
Stick Scanner specifications
SensorAdjuster
②Resolution :600dpi
①Range : 350mm
③Weight : +/- 1kg
④Interface :USB
⑤Scan length: Ver.3 = 105mm
Compact model
SpecVer.3
Ver.4
Tablet PC
Ver.4 : SD card
Ver.4 = 210mmSensorAdjuster
guide