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Infrastructure Technology Institute Publications
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-
- Description:
- This technical report shows the findings of acoustic emission and strain gage monitoring tests conducted by research engineers of Infrastructure Technology Institute from Northwestern University on April 18, 1997 in Sacramento, California.
- Keyword:
- Acoustic emission testing
- Creator:
- Marron, Daniel and Prine, David W.
- Owner:
- Nurganym Agzamova
- Language:
- English
- Date Uploaded:
- 06/21/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 1997-04-18
- Resource Type:
- Report
-
- Keyword:
- crack response and vibration-induced cracking
- Creator:
- Charles H. Dowding
- Owner:
- Chris Diaz
- Date Uploaded:
- 08/14/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2001
- Resource Type:
- Article
-
- Description:
- Carbonation, a neutralizing reaction in cement paste, can be used to date cracks in cementitious materials. Currently, comparison between two cracks is the only method available to predict a relative age with carbonation. These two crack studies require a crack of known age in a similar material with similar exposure...
- Keyword:
- civil engineering
- Creator:
- Laura E. Sullivan-Green
- Owner:
- Chris Diaz
- Date Uploaded:
- 08/14/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2005-03
- Resource Type:
- Masters Thesis
-
- Description:
- Blasting and climatological response of cracks are compared for structures constructed of concrete block typical of home construction in Europe. While much has been written comparing micrometer crack response of wood frame structures typical of residential construction in North America, little has been written concerning response of structures more typical...
- Keyword:
- vibration and climatological crack
- Creator:
- Charles H. Dowding
- Owner:
- Chris Diaz
- Date Uploaded:
- 08/14/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2007
- Resource Type:
- Research Paper
-
- Description:
- Cracking is one of the most common concerns cited by owners of structures adjacent to construction or mining blasting. While a large database of case studies documenting the relative insignificance of ground motion induced by responsible blasting compared to weather effects on cracks in nearby structures has been established, the...
- Keyword:
- Autonomous Crack Measurement
- Creator:
- Charles H. Dowding and Jeffrey E. Meissner
- Owner:
- Chris Diaz
- Date Uploaded:
- 08/14/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2011
- Resource Type:
- Research Paper
-
- Description:
- A study is conducted to determine the effects on the early hydration kinetics and compressive strength by seeding of Portland cement and alkali-activated blast furnace slag with a pure form of calcium silicate hydrate (C-S-H). The effects of C-S-H seeding during the early nucleation and growth period of each type...
- Keyword:
- Cement production
- Creator:
- Jeffrey J. Thomas, Mija Helena Hubler , and Hamlin Jennings
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/26/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2009
- Resource Type:
- Report
-
- Description:
- In this paper, the correlation of reflection loss measured by an ultrasonic shear wave reflection method and the microstructure in cement-based material is investigated. Three cement pastes (Portland cement type I) with different water-cement ratios (0.35, 0.50 and 0.60) cured at 25 °C were examined. The ultrasonic shear wave reflection...
- Keyword:
- Nondestructive testing
- Creator:
- Zhihui Sun, Guang Ye, Klaas van Breugel, Surendra P. Shah, and Thomas Voigt
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/19/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2003
- Resource Type:
- Research Paper
-
- Description:
- This presentation contains information on the keynote paper "Health Monitoring of Early Age Concrete". The presentation was delivered by Surendra P. Shah at CONSEC'04 in Seoul, Korea on June 30, 2004.
- Keyword:
- Structural health monitoring and Nondestructive testing
- Creator:
- Surendra P. Shah, Thomas Voigt, and Zhihui Sun
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/19/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2004-06-30
- Resource Type:
- Presentation
-
- Description:
- The setting and hardening process of concrete can be considered as the most critical time period during the life of a concrete structure. To assure high quality and avoid problems in performance throughout the life of the material, it is essential to have reliable information about the early age properties...
- Keyword:
- Structural health monitoring
- Creator:
- Zhihui Sun, Surendra P. Shah, and Thomas Voigt
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/19/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2004
- Resource Type:
- Other
-
- Description:
- The concrete currently used in the slip-form paving process is a low slump concrete that requires both internal and external vibration in order to achieve satisfactory compaction. The use of vibrator fingers for the internal vibration often leads to trails on the surface of the pavement and to segregation around...
- Keyword:
- Slip-form pavement and Self-consolidating concrete
- Creator:
- Jean-Juste Mbele
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/19/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2007
- Resource Type:
- Masters Thesis
-
- Description:
- This presentation contains information on the project "Aligning Data to Support Transportation Decisions, Emerging Challenges & Opportunities for the Data World". The presentation was delivered by Joseph L. Schofer at Transportation Research Board – AASHTO Peer Exchange meeting on May 15-16, 2008.
- Keyword:
- Climate change , Urban transportation policy, and Transportation system data
- Creator:
- Joseph L. Schofer
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/19/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2008-05-16
- Resource Type:
- Presentation
-
- Description:
- This presentation contains information about the project "The future of transportation... and how we'll pay for it" by Joseph L. Schofer, Department f Civil & Environmental Engineering. The presentation was delivered at the 40th Anniversary Seminar Day at Northwestern University on April 18, 2009.
- Keyword:
- Transportation planning and Green transportation
- Creator:
- Joseph L. Schofer
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/19/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2009-04-18
- Resource Type:
- Presentation
-
- Description:
- The mission of the Infrastructure Technology Institute is to develop strategies and tools to protect and improve the condition, capacity and performance of the nations highway, railroad, and mass transit infrastructure systems. The Institute does this through the development and deployment of (1) advanced technologies for structural health monitoring, (2)...
- Keyword:
- Structural health monitoring
- Creator:
- Jeffrey J. Thomas , Matthew P. Kotowsky, David E. Kosnik , and Joseph L. Schofer
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/12/2017
- Date Modified:
- 08/14/2017
- Resource Type:
- Report
-
- Description:
- Few would argue that concrete is an important and useful material: after all, concrete is the backbone of the world’s infrastructure, used in vast amounts to make roads, buildings, bridges, and other structures. But sometimes familiarity breeds contempt. To most people, concrete is simply that boring grey stuff that we...
- Keyword:
- Cement , Concrete infrastructure , and Concrete
- Creator:
- Jeffrey J. Thomas and Hamlin Jennings
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/12/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2009
- Resource Type:
- Report
-
- Description:
- This final report provides information about TEA-21 [Transportation Equity Act for the 21st Century] funded projects designated A433, and A495 "Evaluation of Capacity of Micropiles Embedded in Dolomite". The report was submitted to the Infrastructure Technology Institute at Northwestern University by Richard J. Finno on September 20, 2002.
- Keyword:
- Nondestructive testing, Dolomite , and Micropiling
- 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:
- 2002-09-20
- Resource Type:
- Report
-
- Description:
- Non-destructive evaluation (NDE) techniques have been used for a number of years to provide quality control of construction procedures for drilled shafts and driven concrete piles. In particular sonic echo and impulse response methods have been used extensively to check lengths and continuity of newly-installed foundations. In recent years, the...
- Keyword:
- Test section , Deep foundation , and Nondestructive testing
- Creator:
- Richard J. Finno , Peter W. Osborn, and Sarah L. Gassman
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/12/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 1997-06
- Resource Type:
- Report
-
- Description:
- An empirical procedure for fitting a complementary error function (erfc) to settlement and lateral ground movement data in a direction parallel to an excavation support wall is proposed based on extensive optical survey data obtained around a 12.8 m excavation in Chicago. The maximum ground movement and the height and...
- Keyword:
- Excavation, Clay soils , Ground control , and Performance data
- Creator:
- Jill Frances Roboski
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/12/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2005
- Resource Type:
- Research Paper
-
- Description:
- Several three-dimensional effects were observed in the performance monitoring data collected during excavation for the Ford Engineering Design Center (FEDC) in Evanston, Illinois. These responses are related to lateral deformations of the soil around the excavation walls, forces in the cross-lot and diagonal bracing that supported the temporary wall and...
- Keyword:
- Excavation, Three-dimensional analysis, Ground control, and Clay soils
- Creator:
- 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
-
- 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
-
- 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
-
- 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
-
- Description:
- Performance monitoring of deep excavations typically includes slope inclinometers, optical surveying of soil deformation, tiltmeters and strain gages. Current monitoring data collection and processing requires time consuming site visits and manual data reduction by project engineers. Development of robotic and remote access geotechnical instrumentation conceptually allows processed data to be...
- Keyword:
- Excavation, Ground control, and Nondestructive testing
- Creator:
- Miltiadis Langousis
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/12/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2007-03
- Resource Type:
- Masters Thesis
-
- 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
-
- Description:
- Northwestern University developed copper-precipitation-hardened, high-performance weathering steel (NUCu 70W Steel) that is produced by hot rolling after casting and then air-cooling. Due to simple processing the steel is fabricated at lower cost than competing high-performance steels that require quench and tempering. NUCu 70W steel can be easily welded without pre-...
- Keyword:
- NUCu steel
- Creator:
- Morris E. Fine and Semyon Vaynman
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/12/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2003-07-18
- Resource Type:
- Report
-
- Description:
- This is the final project report "A Process Control System for the John F. Kennedy Memorial Bridge" by Pablo Durango-Cohen, 2011.
- Keyword:
- Structural health monitoring
- Creator:
- David J. Corr, Yikai Chen, and Pablo Durango-Cohen
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/12/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2011
- Resource Type:
- Report
-
- Description:
- Experimental Time Domain Reflectometry (TDR) data obtained from the field are compared with numerical simulations using a finite-difference solution of the transmission line equations. The model simulates transmission of a voltage pulse along a lossy coaxial cable where deformities on the cable, such as crimps and shears, are represented by...
- Keyword:
- Time-domain reflectometry and Structural health monitoring
- Creator:
- Stéphane P. Bordas
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/12/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 1998-12
- Resource Type:
- Masters Thesis
-
- Description:
- Time Domain Reflectometry (TDR) is a versatile technology amenable to a variety of measurements and nondestructive monitoring of infrastructure conditions. It can be utilized to monitor deformation of soil/rock and structures, monitor changes in fluid levels, and monitor water content of soils. Furthermore, this monitoring can be automated using systems...
- Keyword:
- Time-domain reflectometry and Structural health monitoring
- Creator:
- Charles H. Dowding and Kevin M. O'Connor
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Library
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2001
- Resource Type:
- Report
-
- Description:
- Two longwall coalmine panels were mined at a depth of approximately 156 m (510 ft) beneath I-70 east of Washington, Pennsylvania such that it crossed the width of one panel at two locations. The Pennsylvania Department of Transportation (PennDoT) assumed responsibility for real time monitoring of both ground deformation and...
- Keyword:
- Structural health monitoring
- Creator:
- Charles H. Dowding, Kevin M. O'Connor, David J. Whitlatch , and Ronald J. Clark
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2001
- Resource Type:
- Report
-
- Description:
- This paper reviews the new field of geo-measurement with metallic cable time domain reflectometry (TDR) for surveillance of transportation facilities. TDR is radar in a coaxial cable, and is especially advantageous for remote monitoring because of its inherently digital nature. Advances can be separated into those that leverage use of...
- Keyword:
- Structural health monitoring and Time-domain reflectometry
- Creator:
- Charles H. Dowding
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2011-07-27
- Resource Type:
- Research Paper
-
- Description:
- This thesis combines field and laboratory measurements with three dimensional (3D) finite element analysis (FEM) to demonstrate the use of Time Domain Reflectometry (TDR) cable-grout composites to measure localized shearing in soft soil. Past field installations of TDR cable-grout composites in rock have lead to its widespread use in the...
- Keyword:
- Structural health monitoring and Time-domain reflectometry
- Creator:
- James Tanner Blackburn
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2002-04
- Resource Type:
- Masters Thesis
-
- Description:
- This thesis presents the application of Time Domain Reflectometry technology in nine case studies. Presented in detail are cable and grout installation techniques, data acquisition instrumentation and autonomous real time monitoring of soil deformation using TDR. The goal of this work is to summarize the state of the technology in...
- Keyword:
- Structural health monitoring
- Creator:
- Matthieu L. Dussud
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2002-12
- Resource Type:
- Masters Thesis
-
- Description:
- Miniaturized, wireless instrumentation is now a reality and this thesis describes development of such a system to monitor crack response. Comparison of environmental (long-term) and blast-induced (dynamic) crack width changes in residential structures has lead to a new approach to monitoring and controlling construction vibrations. In wireless systems transducer power...
- Keyword:
- Structural health monitoring
- Creator:
- Hasan Ozer
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2005
- Resource Type:
- Masters Thesis
-
- Description:
- Public concern over construction vibration-induced cracking has led to the development of a radically new approach to vibration, an autonomous crack comparometer (ACC). This thesis chronicles the first step of developing equipment and software necessary for this system. The new system will automatically compare longterm weather induced micrometer changes in...
- Keyword:
- Structural health monitoring
- Creator:
- Damian R. Siebert
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2000-06
- Resource Type:
- Masters Thesis
-
- Description:
- The thesis describes the second phase of development of the Autonomous Crack Comparometer (ACC) system to incorporate measurements of ground motions and add several changes in the autonomous operation. In order to obtain the ground motion and air blast data, four additional transducers have been added. There are now a...
- Keyword:
- Structural health monitoring
- Creator:
- Michaël Louis
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2000
- Resource Type:
- Masters Thesis
-
- Description:
- This thesis consists of the data and analysis of structural responses for two different studies: the Office of Surface Mining (OSM) study of the velocity response of “atypical” residential structures and the Autonomous Crack Monitoring (ACM) study. The main basis of this thesis was to do additional analysis on a...
- Keyword:
- Structural health monitoring
- Creator:
- Laureen M. McKenna
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2002-03
- Resource Type:
- Masters Thesis
-
- Description:
- This appendix synthesizes micrometer changes in crack width in response to both long term (environmental) and transient (blast vibration) of four of the structures in the main body. The appendix begins with a description of the genesis of the study and instruments employed. Response of the distressed wood-framed structure in...
- Keyword:
- Structural health monitoring
- Creator:
- Charles H. Dowding and Laureen M. McKenna
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2003
- Resource Type:
- Other
-
- Description:
- Autonomous Crack Measurement (ACM) facilitates simultaneous measurement of crack response to environmental changes and vibrations produced by various construction activities. Dual-purpose crack displacement sensors measure crack response, while the vibration environment is defined by standard seismological transducers and the weather environment is defined as changes in temperature and humidity. This...
- Keyword:
- Structural health monitoring and Cracking of concrete
- Creator:
- Mickey L. Snider
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2003-05
- Resource Type:
- Masters Thesis
-
- Description:
- All structures have cosmetic cracks, which have no influence on structural integrity and usually remain unremarked until the structure’s occupants sense ground vibrations. Such vibrations are often associated with engineering activity, but are rarely responsible for cracks. However, this is difficult to prove without scientific basis. Automated Crack Monitoring (ACM)...
- Keyword:
- Structural health monitoring and Cracking of concrete
- Creator:
- Markian B. Petrina
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2004-08
- Resource Type:
- Masters Thesis
-
- Description:
- Cosmetic cracks are very common in structures, and most of the time they remain unnoticed and do not decrease the structural integrity. Although these cracks are unremarkable and barely noticeable, occupants become concerned about these cracks when construction occurs nearby. In order to investigate the true nature of these cracks,...
- Keyword:
- Structural health monitoring and Cracking of concrete
- Creator:
- Remi Baillot
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2004-12
- Resource Type:
- Masters Thesis
-
- Description:
- This thesis summarizes two further developments of the Autonomous Crack Monitoring (ACM) system, which facilitates simultaneous measurement of crack response to environmental changes and various dynamic events. The first component was measurement of crack responses in three different materials and locations in a residential structure subjected to ground vibrations produced...
- Keyword:
- Structural health monitoring
- Creator:
- Mike J. Waldron
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2006-06
- Resource Type:
- Masters Thesis
-
- Description:
- This thesis summarized the qualification and testing of two commercial Autonomous Crack Monitoring (ACM) systems for use in measuring micrometer displacement of cracks. Qualification involved the assessment of both laboratory and field performance in a residential structure subjected to nearby quarry blasting for the production of roadway aggregate. Aggregate and...
- Keyword:
- Structural health monitoring
- Creator:
- Brandon G. Hughes
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2006-06
- Resource Type:
- Masters Thesis
-
- 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
-
- 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
-
- Description:
- Cosmetic and structural cracks are a large concern for homeowners. Although these cracks can develop from a variety of causes: differential foundation settlement, occupant activity, climatological effects, as well as dynamic events, people tend to look to dynamic events like blasting, construction, or traffic vibrations to be the culprit. This...
- Keyword:
- Crack responses , Structural integrity assessment , and Ground motions
- Creator:
- 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:
- Report
-
- Description:
- The notion of blasting, even in a controlled setting such as a limestone quarry, can be alarming to residents and business owners within earshot. Because humans are inherently sensitive to blast-induced vibrations, they perceive that the structures in which they live in are equally sensitive. The goal of this project...
- Keyword:
- Ground motion, Concrete block structure, and Structural health monitoring
- Creator:
- Charles H. Dowding and Jeffrey E. Meissner
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2009
- Resource Type:
- Report
-
- Description:
- This appendix contains all software used to program the MICA2 motes for Version 1 of the MICA2-based wireless ACM system. This appendix is organized by software directory and only the modified files are included.
- Keyword:
- Structural health monitoring , Wireless sensor networks , and Source code
- Creator:
- Matthew P. Kotowsky
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2010
- Resource Type:
- Software or Program Code
-
- Description:
- Autonomous Crack Monitoring (ACM) and Autonomous Crack Propagation Sensing (ACPS) are two types of structural health monitoring in which characteristics of cracks are recorded over long periods of time. ACM seeks to correlate changes in widths of cosmetic cracks in structures to nearby blasting or construction vibration activity for the...
- Keyword:
- Structural health monitoring and Wireless sensor networks
- Creator:
- Matthew P. Kotowsky
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2010
- Resource Type:
- Masters Thesis
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- Description:
- This manual describes use of a new hybrid autonomous crack and structural response monitoring (ACSM) system. It is designed as a low cost alternative to the research grade version employing SOMAT’s eDAQ data recording system. The concept is to combine a new field portable, 24 bit, 12 channel seismograph with...
- Keyword:
- Structural monitoring system
- Creator:
- Thomas Koegel
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2011
- Resource Type:
- Other
-
- Description:
- This paper describes the details of installation and operation of a commercially- available wireless system to measure response of an interior cosmetic crack in a residential structure over a period of a year. Wireless data loggers managed the response of low power draw potentiometers that measured micrometer changes in crack...
- Keyword:
- structural health monitoring
- Creator:
- Dowding, C.H. , Kotowsky, M., and Koegel, T.
- Owner:
- Nurganym Agzamova
- Language:
- English
- Date Uploaded:
- 07/05/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2012
- Resource Type:
- Research Paper
-
- Description:
- The purpose of this comparative field qualification is to demonstrate the new Kelunji EchoPro hybrid ACSM system and its performance relative to the eDAQ and eko Motes systems. These three systems are installed at a test site in Sycamore, IL, adjacent to an active quarry. Data for this report was...
- Keyword:
- Infrastructure Technology Institute
- Creator:
- Thomas Koegel
- Owner:
- Nurganym Agzamova
- Publisher:
- Northwestern University Libraries
- Language:
- English
- Date Uploaded:
- 06/28/2017
- Date Modified:
- 08/14/2017
- Date Created:
- 2011
- Resource Type:
- Report