Index Catalog // Arch : Northwestern University Institutional Repository

1. Crack Response to Blast Vibrations and Moisture Induced Volumetric Changes in Foundation Soils

Description:: In this paper vibratory crack response is compared to that produced by volumetric changes in foundation soils induced by natural events. These natural phenomena include changes in the water table, changes in soil moisture, and formation of ice lenses to name a few. Previous papers have compared vibratory responses of...
Keyword:: Structural health monitoring and Cracking of concrete
Creator:: V. Rosenhaim, Catherine Aimone-Martin, Jeffrey Meissner , and Charles H. Dowding
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/05/2017
Date Modified:: 08/14/2017
Date Created:: 2009
Resource Type:: Research Paper

2. Autonomous Remote Crack Displacement Monitoring of a Residence Near a Limestone Quarry, Naples, Florida

Description:: This paper describes the technology and methods deployed in the continuous autonomous remote monitoring of cracks in interior and exterior walls of a residence near a limestone quarry. The object is to quantitatively compare crack response to blast-induced ground motion to that induced by diurnal temperature changes, weather fronts, and...
Keyword:: Cracking of concrete and Structural health monitoring
Creator:: David E. Kosnik
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/05/2017
Date Modified:: 08/14/2017
Date Created:: 2008-03-21
Resource Type:: Research Paper

3. Micro-meter Crack Response to Rock Blast Vibrations, Wind Gusts & Weather Effects

Description:: Micro-meter dynamic crack responses in a two story structure to rock blasting- and wind gust- excitation are compared to those induced by long term climatological effects. These measurements substantiate the conservancy of the 12.5 mm/s (0.5 in./s) blasting vibration control to protect residential structures against cracking. The test structure was...
Keyword:: Micrometers , Blast effect , Structural health monitoring, and Cracking of concrete
Creator:: Charles H. Dowding and C. T. Aimone-Martin
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/05/2017
Date Modified:: 08/14/2017
Date Created:: 2007
Resource Type:: Research Paper

4. Ground Motions from and House Response to Underground Aggregate Mining

Description:: A unique judicial opportunity allowed measurement of the response of three cracks in residential structure to blasting for underground aggregate mining. Instrumented cracks were located in the interior basement CMU mortar and upstairs dry wall as well as exterior brick work. The dynamic environment was unusual. Even though the blasting...
Keyword:: Structural health monitoring and Cracking of concrete
Creator:: Mike Waldron, G.F. Revey, and C.H. Dowding
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/05/2017
Date Modified:: 08/14/2017
Date Created:: 2007
Resource Type:: Research Paper

5. Structure Response to Trench and Road Blasting", Proceedings of the 3rd World Conference on Explosives and Blasting, European Federation of Explosives Engineers, Brighton, England

Description:: Crack and structural response to construction trench blasting was measured in a woodframe house with a stucco exterior. Blasts at distances between 232 m to 368 m produced peak particle velocities (PPV) and air blast over pressures (AB) of 9 mm/sec and 0.02 kPa (123 dB), respectively. Structural response velocities...
Keyword:: Structural health monitoring
Creator:: Charles H. Dowding , Catherine T. Aimone-Martin, and Vitor L. Rosenhaim
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/05/2017
Date Modified:: 08/14/2017
Date Created:: 2005
Resource Type:: Research Paper

6. Potentiometers for Measuring Micro-inch Crack Displacements with Wireless Systems

Description:: This paper describes qualification of devices to measure sub micro-meter changes in crack width, which is the basis of autonomous crack monitoring for control of blasting vibrations. Performance of LVDT, eddy current and potentiometer sensors to monitor long-term and transient displacements will be described. Potentiometers are attractive for wireless measurement,...
Keyword:: Structural health monitoring
Creator:: Hasan Ozer, Charles H. Dowding, and Dan Marron
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/05/2017
Date Modified:: 08/14/2017
Date Created:: 2007
Resource Type:: Research Paper

7. Integrated Tools for Predicting, Monitoring and Controlling Ground Movements due to Excavations

Description:: This paper describes developments of integrated tools for predicting, monitoring, and controlling ground movements associated with excavations in urban areas. Successful use of monitoring data to update performance predictions of supported excavations depends equally on reasonable numerical simulations of performance, the type of monitoring data used as observations, and the...
Keyword:: Ground control and Nondestructive testing
Creator:: Richard J. Finno and Youssef M. A. Hashash
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/12/2017
Date Modified:: 08/14/2017
Date Created:: 2009
Resource Type:: Research Paper

8. Inverse Analyses Techniques for Parameter Identification in Simulation of Excavation Support System

Description:: Two numerical procedures are described that quantitatively identify a set of constitutive parameters that best represents observed ground movement data associated with a deep excavations in urban environments. This inverse problem is solved by minimizing an objective (or error) function of the weighted least-squares type that contains the difference between...
Keyword:: Ground control and Nondestructive testing
Creator:: Cecilia Rechea Bernal
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/12/2017
Date Modified:: 08/14/2017
Date Created:: 2007
Resource Type:: Research Paper

9. Use of Monitoring Data to Update Performance Predictions of Supported Excavations

Description:: Successful use of monitoring data to update performance predictions of supported excavations depends equally on reasonable numerical simulations of performance, the type of monitoring data used as observations, and the inverse analysis techniques used to minimize the difference between predictions and observed performance. This paper summarizes each of these factors...
Keyword:: Excavation, Nondestructive testing , and Ground control
Creator:: Richard J. Finno
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/12/2017
Date Modified:: 08/14/2017
Date Created:: 2007
Resource Type:: Research Paper

10. Three-dimensional effects for supported excavations in clay

Description:: This paper presents the results of 159 finite element simulations conducted to define the effects of excavation geometry, i.e., length, width and depth of excavation, wall system stiffness, and factor of safety against basal heave on the 3-dimensional ground movements caused by excavation through clays. The results of the analyses...
Keyword:: Excavation, Three-dimensional analysis, and Nondestructive testing
Creator:: Jill Frances Roboski, James Tanner Blackburn, and Richard J. Finno
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/12/2017
Date Modified:: 08/14/2017
Date Created:: 2006
Resource Type:: Research Paper

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1. Crack Response to Blast Vibrations and Moisture Induced Volumetric Changes in Foundation Soils

2. Autonomous Remote Crack Displacement Monitoring of a Residence Near a Limestone Quarry, Naples, Florida

3. Micro-meter Crack Response to Rock Blast Vibrations, Wind Gusts & Weather Effects

4. Ground Motions from and House Response to Underground Aggregate Mining

5. Structure Response to Trench and Road Blasting", Proceedings of the 3rd World Conference on Explosives and Blasting, European Federation of Explosives Engineers, Brighton, England

6. Potentiometers for Measuring Micro-inch Crack Displacements with Wireless Systems

7. Integrated Tools for Predicting, Monitoring and Controlling Ground Movements due to Excavations

8. Inverse Analyses Techniques for Parameter Identification in Simulation of Excavation Support System

9. Use of Monitoring Data to Update Performance Predictions of Supported Excavations

10. Three-dimensional effects for supported excavations in clay

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1. Crack Response to Blast Vibrations and Moisture Induced Volumetric Changes in Foundation Soils

2. Autonomous Remote Crack Displacement Monitoring of a Residence Near a Limestone Quarry, Naples, Florida

3. Micro-meter Crack Response to Rock Blast Vibrations, Wind Gusts & Weather Effects

4. Ground Motions from and House Response to Underground Aggregate Mining

5. Structure Response to Trench and Road Blasting", Proceedings of the 3rd World Conference on Explosives and Blasting, European Federation of Explosives Engineers, Brighton, England

6. Potentiometers for Measuring Micro-inch Crack Displacements with Wireless Systems

7. Integrated Tools for Predicting, Monitoring and Controlling Ground Movements due to Excavations

8. Inverse Analyses Techniques for Parameter Identification in Simulation of Excavation Support System

9. Use of Monitoring Data to Update Performance Predictions of Supported Excavations

10. Three-dimensional effects for supported excavations in clay