Browsing Theses and Dissertations (MU) by Thesis Advisor "Washer, Glenn A."
Now showing items 1-20 of 24
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Advancements in evaluating reliability of nondestructive technologies for the detection of subsurface fracture damage in R.C. bridge decks
(University of Missouri--Columbia, 2017)During the last few decades, many efforts have been made to assess the reliability of nondestructive evaluation (NDE) technologies used for the detection of subsurface damage in concrete bridge decks. During these efforts, ... -
Comparison of nondestructive testing technologies used for inspection of welded joints
(University of Missouri--Columbia, 2014)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The purpose of this research is to report on the comparison between different nondestructive test (NDT) methods applied for the detection of defects ... -
Condition assessment of carbon fiber composites using raman spectroscopy
(University of Missouri--Columbia, 2009)The goal of this research is to examine the potential of Raman spectroscopy as a method of condition assessment for carbon fiber composite materials. Carbon fiber composites are used in high performance situations such as ... -
Condition assessment of Kevlar composite materials using Raman spectroscopy
(University of Missouri--Columbia, 2007)This thesis presents the results of an investigation of the Raman scattering effects of aging Kevlar composite strands. The goal of this research is to investigate the potential application of Raman spectroscopy as a ... -
Development of a portable total-stress measurement instrument
(University of Missouri--Columbia, 2016)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] This research explores the application of ultrasonic stress measurement (USM) technologies to assess stress levels in gusset plates with the development ... -
The effect of visual inspection reliability on risk-based inspection
(University of Missouri--Columbia, 2020)Bridge inspection has come a long way from its inception as a component level practice following the Silver Bridge collapse in 1967 to the most recent advancement enacted by the Moving Ahead for Progress in the 21st Century ... -
Environmental effects on subsurface defect detection in concrete structures using infrared thermography
(University of Missouri--Columbia, 2009)Deterioration of concrete due to corrosion of embedded steel reinforcing bars and prestressing strands represent a significant challenge for inspection and maintenance engineers. Cracking, delaminations and spalling that ... -
Environmental effects on subsurface defect detection in concrete without solar load
(University of Missouri--Columbia, 2010)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] This study investigated the application of infrared (IR) thermography for the detection of subsurface damage in concrete. The deterioration of concrete ... -
Evaluating the variables that impact ultrasonic testing
(University of Missouri--Columbia, 2014)The goal of this research was to improve the quality control process for steel fabrication to improve the reliability, safety and quality of welded steel components. The objectives of this project were to explore the ... -
Experimental assessment of advanced thermal imaging for detecting voids in ducts
(University of Missouri--Columbia, 2017)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] This research will evaluate the ability of a transient based Infrared Thermography (IRT) technology called the Infrared Ultra Time Domain (IR-UTD) ... -
Experimental assessment of advanced thermal imaging for detecting voids in ducts
(University of Missouri--Columbia, 2017)This research will evaluate the ability of a transient based Infrared Thermography (IRT) technology called the Infrared Ultra Time Domain (IR-UTD) system to detect defects in Post Tensioned (PT) ducts. In recent years, ... -
Guideline for implementing quality control and quality assurance for bridge inspection
(University of Missouri--Columbia, 2009)Structurally deficient bridges are becoming more and more prevalent. The need to identify and correct these deficiencies is becoming increasingly apparent. This task is assigned to bridge inspections. With such a critical ... -
Long-term sensing system for bridge piers
(University of Missouri--Columbia, 2009)Structural instability of bridge piers resulting from scour or other natural hazards can lead to bridge collapse. As a result, a method of monitoring bridge piers is needed to evaluate long-term changes in structural ... -
Modeling of environmental effects on thermal detection of subsurface damage for concrete bridges
(University of Missouri--Columbia, 2013)This study developed a numerical model to predict thermal contrasts for subsurface delaminations based on a given set of environmental conditions. The finite element method (FEM) was used to perform 3-D, transient heat ... -
Nondestructive evaluation for hybrid-composite girder bridges
(University of Missouri--Columbia, 2013)This thesis will describe the efforts to develop quality control tools for the fabrication and construction of Hybrid Composite Beams (HCBs), a relatively new bridge technology currently being evaluated by the Missouri ... -
Optimization of electromagnetic acoustic transducers for nondestructive evaluation of concrete structures
(University of Missouri--Columbia, 2008)There are more than 130,000 prestressed concrete bridges in the United States with about 37,000 bridges being more than 30 years old. Prestressing steel strands are an important construction element used in these bridges ... -
Reliability-based methodology for bridge inspection planning
(University of Missouri--Columbia, 2011)This research program was created with the goal of improving bridge safety and reliability while also improving the allocation of bridge inspection resources. The research reported herein was completed as a part of a larger ... -
Remote health monitoring for asset management
(University of Missouri--Columbia, 2009)This project explored the development of real-time monitoring technology to be used for effective asset management. There is a critical need to develop technologies to assess and monitor the condition of these bridges over ... -
Sensor characterization for long-term remote monitoring of bridge piers
(University of Missouri--Columbia, 2007)Structural instability of bridge piers resulting from scour or other natural hazards can lead to bridge collapse. A monitoring system that analyzes bridge pier behavior could prevent this type of failure by detecting ... -
Training and field verification for hand-held thermographic inspection technologies
(University of Missouri--Columbia, 2013)The goal of this research is to investigate new technologies for the condition assessment of concrete, to help ensure bridge safety and improve the effectiveness of maintenance and repair. The objectives of the research ...