باسمه تعالی روش های شناسایی در سیستم های سازه ای بیژن معاونی )استادیار دانشگاه علم و صنعت ایران( نیمسال اول باسمه تعالی

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Benedict Douglas
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1 باسمه تعالی روش های شناسایی در سیستم های سازه ای بیژن معاونی )استادیار دانشگاه علم و صنعت ایران( نیمسال اول باسمه تعالی روش های شناسایی در سیستم های سازه ای Lecture 1 1

2 طرح مساله و لزوم پرداختن Wake-up Call Collapse of the I-35W highway bridge over the Mississippi river in Minneapolis, Minnesota, United States(2007) Death Toll: 13 (nearly 150 injured) Institute of [Ref] E. Chatzi,, طرح مساله و لزوم پرداختن 4 2

3 طرح مساله و لزوم پرداختن 5 طرح مساله و لزوم پرداختن 6 3

Aging Problem for Infrastructures In Western

4 Aging Problem for Infrastructures In Western Europe, where some infrastructure systems are far older, maintenance and repair issues surfaced long before they did in the US. European nations have already drawn up extensive infrastructure plans 7 Aging Problem for Infrastructures 8 4

monetary value of the civil infrastructures worldwide

5 Structural Innovation 9 طرح مساله و لزوم پرداختن Structural Health Monitoring The strategic and monetary value of the civil infrastructures worldwide call for the development of SHM systems. [Ref] E. Chatzi,,

11 Sensor Technologies for SHM Fiber optic Sensing

6 طرح مساله و لزوم پرداختن Structural Health Monitoring [Ref] E. Chatzi,, Sensor Technologies for SHM Fiber optic Sensing Technology [Ref] M. Karbhari, F Ansari, Structural Health Monitoring of Civil Infrastructure Systems,

Sensor Technologies for SHM Wireless Sensors and

13 Sensor Technologies for SHM Smart cement-based

7 Sensor Technologies for SHM Wireless Sensors and Sensor Networks [Ref] M. Karbhari, F Ansari, Structural Health Monitoring of Civil Infrastructure Systems, Sensor Technologies for SHM Smart cement-based strain gauge [Ref] M. Karbhari, F Ansari, Structural Health Monitoring of Civil Infrastructure Systems,

8 Sensor Technologies for SHM Laser Vibrometer [Ref] E. Chatzi,, Sensor Technologies for SHM Fiber Reinforced Polymer Material [Ref] E. Chatzi,,

17 Sensor Technologies for SHM Acoustic Emission Detection Schemes - Strain sensor detects approaching trains and wake AE sensors.

9 Sensor Technologies for SHM Interferometric Radar Generates maps of surface deformation over time * دقت در حد سانتیمتر Manhattan Bridge The main span is 448 m long. Total Length: 2089 m [Ref] E. Chatzi,, Sensor Technologies for SHM Acoustic Emission Detection Schemes - Strain sensor detects approaching trains and wake AE sensors. - Using Artificial Intelligence Methods fatigue crack growth is quantified. - Information is transmitted via wireless network or satellite transmission. - Decision making Process is activated. [Ref] E. Chatzi,,

Information Technologies (IT) for SHM [Ref] E. Chatzi,, 2013.

10 Information Technologies (IT) for SHM [Ref] E. Chatzi,, Sensors, Sensor Networks, Data Fusion and IT in SHM [Ref] E. Chatzi,,

21 System Identification is the process of developing or

11 Link between acquired data & modeling of structural behavior? System Identification [Ref] E. Chatzi,, System Identification is the process of developing or improving the mathematical representation of a physical system using experimental data

Total Length: 2089 m 23 Total Length: 2089 m

12 Sensor Installation Plan Manhattan Bridge The main span is 448 m long. Total Length: 2089 m 23 Sensor Installation Plan Manhattan Bridge The main span is 448 m long. Total Length: 2089 m 24 12

Sensor Installation Plan [Ref] E. Chatzi,, 2013.

13 Sensor Installation Plan [Ref] E. Chatzi,, Application of Structural ID for Vibration Control [Ref] E. Chatzi,,

14 Tuned Mass Damper Installation to the Millennium Bridge, London [Ref] E. Chatzi,, SHM and Structural Identification [Ref] E. Chatzi,,

engineering demonstration of the durability and long-term performance Institute

15 Worldwide Monitoring Projects Fiber Optic sensing system - Sutong Bridge (China) Advantage: capability of distributed sensing and measurement Obstacle: Lack of engineering demonstration of the durability and long-term performance Institute [Ref] E. Chatzi,, Worldwide Monitoring Projects Sutong Bridge (China) 30 15

16 Worldwide Monitoring Projects Egnantia Highway Greece Metsovo Bridge 31 Worldwide Monitoring Projects Egnantia Highway - Greece [Ref] E. Chatzi,,

Projects SHM System: Monitoring of strain/stress

and displacement, Ground motion, wind and

17 Worldwide Monitoring Projects Egnantia Highway - Greece LVDT Strain Gage 33 Worldwide Monitoring Projects SHM System: Monitoring of strain/stress and structural temperature, Acceleration, tilt and displacement, Ground motion, wind and weather conditions Corrosion [Ref] E. Chatzi,,

18 Infrastructure Management through SHM Detect damage and deterioration before it poses a risk Monitor expected design behavior of structural system not only at initial stage but also during the life cycle of a structure Prognosis, i.e., determine remaining life of structures Trigger, remedial action, passive or active control of structure Optimize investment in maintenance Manage risk Goal: is not to replace traditional inspections with monitoring but to complement and optimize the inspection and assessment process with modern tools. [Ref] E. Chatzi,, Course Outline Physics-based modeling Time-domain (ODE and State-space) Laplace-domain (Transfer function) Frequency-domain (Frequency response function) Data-based modeling Fundamentals of Signal Processing Non-parametric methods (Peak-picking, FDD) Parametric methods (ARMA, Stochastic Subspace ID, KF) Institute 36 18

19 - مراجع 1. E. Chatzi,, M. Karbhari, F Ansari, Structural Health Monitoring of Civil Infrastructure Systems,

Health Monitoring Aspects of Low Cost Housing

Workshop on PERFORMANCE EVALUATION OF HOUSING UNITS 21-22 July 2017 IIT Kanpur, Extension Center, Noida Health Monitoring Aspects of Low Cost Housing Debasish Jana Dr. Suparno Mukhopadhyay International