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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 116 for “"Condition assessment"”.
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Condition assessment of polyethylene pipeline systems
… or techniques available to facilitate the condition assessment programme of PE pipelines systems. The primary goal of this study was to establish a better understanding of the ageing process in commercial piping materials and to understand its effect on long term integrity of PE pipeline …
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Structural Condition Assessment Of Prestressed Concrete Transit Guideways
Objective condition assessment is essential to make better decisions for safety and serviceability of existing civil infrastructure systems. This study explores the condition of an existing transit guideway system that has been in service for thirty-five years. The structural system is composed of …
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Ultrasonic-Based Condition Assessment of Wooden Utility Poles
… set of half-space boundary and interface loading conditions, the obtained closed-form displacement field yields the diffusive property of the shell region propagation as a function of the Poisson’s ratio. The diffusive property is discovered under the quasi-steady load condition, a reasonable …
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Iot framework for condition assessment of railroad bridges
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-08-01
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Long-term management and condition assessment of concrete culvert
… other aspects of the society. Nationwide, the condition of America’s infrastructure was graded as “D+” by the American Society of Civil Engineers (ASCE) in 2013. Owners and responsible agencies have employed various cost-effective maintenance and repair methods as well as analytical tools to …
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Rapid Condition Assessment of Bridges By Falling Weight Deflectometer
… (FWD) as an impact source to rapidly assess the condition of an in service bridge through the evaluation of its modal properties. Tests were conducted on two bridges, a Parker Pony Truss and a modern concrete deck on rolled steel beam bridge. Two full tests were performed on these structures with …
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Machine Learning for the Condition Assessment of Concrete Bridges
The assessment of concrete bridge conditions is critical for ensuring structural integrity and public safety. Traditional inspection methods, which rely heavily on visual inspections and manual assessments, are time-consuming, subjective, and prone to human error. With the increasing number of …
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Condition assessment of reinforced concrete structures using electromagnetic waves
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1990.
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The Washington Memorial Chapel: Historic Structure Report and Condition Assessment
… into three sections: historical background, condition assessment, and recommendations for treatment of the decorative limestone. The historical description explores the story of the site, of the church founders, and of the building itself. The conditions assessment contains an analysis of …
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Condition assessment using dissolved gas analysis on transmission power transformers
… It is thus important to know the effective condition of the transformers and reactors to reduce the risks of unplanned outages as well as catastrophic failures. The objective of this research is to evaluate the effectiveness of the Low Energy Degradation Triangle (LEDT) technique for the …
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Ultrasonic phased arrays of the condition assessment of concrete structures
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1998.
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Condition assessment of GFRP-retrofitted concrete cylinders using electromagnetic waves
… into spatial images for visualization and condition assessment. Reconstructed images are further analyzed by mathematical morphology to extract a numerical index representing the feature of the image as a basis for quantitative evaluation. The components of the development include …
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Digital State Models for Infrastructure Condition Assessment and Structural Testing
… of digital state models for civil infrastructure condition assessment and structural testing. Digital state models are defined herein as any transient or permanent 3D model of an object (e.g. textured meshes and point clouds) combined with any electromagnetic radiation (e.g., visible light, …
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Condition Assessment of Civil Infrastructure and Materials Using Deep Learning
… developed deep learning studies for the condition assessment of civil infrastructure and materials. This dissertation included five main works: (1) Deep learning and infrared thermography for asphalt pavement crack severity classification. This work focused on longitudinal or transverse …
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Data-Driven Approaches in Water Pipe Condition Assessment and Failure Prediction
… particularly under severely imbalanced data conditions. To further enhance predictive reliability, a stacked ensemble model was developed specifically for temporal forecasting. Unlike conventional methods that rely on random data splits, this model applied temporal segmentation, providing a …
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Methodological approaches to the condition assessment of reinforced concrete architectural heritage
L'abstract è presente nell'allegato / the abstract is in the attachment
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Arid land condition assessment and monitoring using mulitspectral and hyperspectral imagery.
… Due to the broadness, remoteness, and harsh condition of these lands, land condition assessment and monitoring using ground-based techniques appear to be limited. Remote sensing imagery with its broad areal coverage, repeatability, cost and time-effectiveness has been suggested and used as an …
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Air-coupled non-destructive evaluation technology for condition assessment of railroad ties
… non-destructive evaluation (NDE) technology for condition assessment of railroad ties. Ultrasonic surface waves are generated in railroad ties using an air-coupled ultrasonic sender. Surface waves are sensed at the receiving end using an array of Micro-Electro Mechanical sensors (MEMs). The …
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Infrastructure Condition Assessment and Prediction under Variable Traffic Demand and Management Scenarios
… accounts for the combined effects of pavement conditions and traffic management decision-making strategies. The research focuses on exploring the range of possible performance outcomes resulting from this integrated modeling approach. The research also applied the developed framework to a …
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