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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

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Us rt 23 wayne bridge test

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

Presentation outline

  • What Smart Structures is

  • Innovative sensory technology

    • Smart Scanner

    • Stick Scanner

    • Telecentric (deflection)

    • Telecentric (strain)


Us rt 23 wayne bridge test

Schematic description of SHMS


Software for bridge health monitoring

Software for Bridge Health Monitoring


Shms system

SHMS System


Us rt 23 wayne bridge test

KRC Japan – Smart Structures USA

Wayne Bridge Rt. 23 NJ

June 10 -11, 2011


Us rt 23 wayne bridge test

KRC Japan – Smart Structures USA

Wayne team


Us rt 23 wayne bridge test

Full-field Optical Monitoring Techniques

- Smart Scanner: strain, stress

- Stick Scanner:

investigate internal concrete structures

- Telecentric:

- Strain

- deflection

8


Overview

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

9


Smart scanner

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


    Us rt 23 wayne bridge test

    Wide range

    Simple and low cost

    Line Sensing Scanner

    Resolution: 4800dpi

    Constant brightness

    (fix attachment,

    no external effect)

    Flat head Image Scanner

    11


    Us rt 23 wayne bridge test

    Flat Head Image Scanner

    CIS (Contact Image Sensor)

    No lens (no aberration)

    Light, compact, low cost

    Primary Scanning direction

    Secondary Scanning Direction

    The resolution in secondary direction is lower than primary direction

    ×

    glass

    Line sensor

    Light Source

    Driving shaft (motor, guiderail, timing belt)

    12


    Us rt 23 wayne bridge test

    Sub set(N×N)

    Sub set (N×N)

    Pixel

    Digitalized

    Pre-deformed

    Pre-deformed

    Pre-deformed

    Scanner

    Deformed

    Range

    Deformed

    Deformed

    Digitalized Image Correlation Analyses

    13


    Us rt 23 wayne bridge test

    Concrete

    Wood

    Steel

    14


    Us rt 23 wayne bridge test

    Full field scanner sensor

    高さ調節ネジ

    Line sensor

    turnable

    Rotary table

    ラインセンサ

    shield

    Fixer

    Full-field Scanner

    15


    Us rt 23 wayne bridge test

    Smart Scanner

    Primary dir

    Rear

    Front

    Leg

    Focal digital meter

    Window

    Thermometer(surface)

    Secondary

    Micrometer adjuster

    Thermometer(sensor)

    Battery

    Line sensor

    Linear encoder

    Scanning bar

    Stepping motor


    Us rt 23 wayne bridge test

    Corrosive crack at pier cap


    Us rt 23 wayne bridge test

    Crack gauge


    Us rt 23 wayne bridge test

    Studs and mounts

    Measured data

    Studs

    Mounts

    19


    Us rt 23 wayne bridge test

    Smart Scanner installation


    Us rt 23 wayne bridge test

    Crack width and crack distribution


    Stick scanner

    Stick Scanner development

    Handy scanner

    Stick Scanner

    Development background

    Core

    ○Material analyses

    ×structural destructive

    Combine pros

    ×crack broken core

    Endoscope

    Full field investigation, small drilled hole

    ○low cost, constructability

    ○Micro destructive

    ×Narrow field


    Stick scanner specifications

    Stick Scanner specifications

    Compact model

    Ver.3

    Adjuster

    Spec

    Sensor

    ①Range:350mm

    ②Resolution:600dpi

    Tablet PC

    ③Weight:+/- 1kg

    ④Interface:USB

    Ver.4:SD card

    Ver.4

    ⑤Scan length:

    Ver.3=105mm

    Adjuster

    Sensor

    Ver.4=210mm

    guide


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