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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 15 of 15 for “"Structural evaluation"”.
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Structural evaluation of fixed offshore platforms
… described that can be used to detect subsurface structural failure by detecting changes in the natural frequencies of the structure. One tower aas extensively studied; the dynamic measurement and analysis techniques are described. A parallel computer model of this tower was used to simulate the …
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Structural evaluation of fixed offshore platforms
Thesis. 1975. Ph.D.--Massachusetts Institute of Technology. Dept. of Ocean Engineering.
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Combined Compression and Shear Structural Evaluation of Stiffened Panels Fabricated Using Electron Beam Freeform Fabrication
… to manufacture unitized aircraft structures. The structural efficiency of blade stiffened panels made with EBF3 was compared to panels made by integrally machining from thick plate. The panels were tested under two load cases in a combined compression-shear load test fixture. One load case tested …
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Application of spectral techniques and machine learning for fertility, mortality, sex, and structural evaluation of eggs
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-05-01
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Verification of Mechanistic-Empirical Pavement Deterioration Models Based on Field Evaluation of In-Service Pavements
This thesis focused on using a detailed structural evaluation of seven (three flexible and four composite) high performance in-service pavements designated as high-priority routes to verify the applicability of the Mechanistic Empirical (M-E) models to high performance pavements in the Commonwealth …
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Damage Control Measures in Composites: Focus on Damage Tolerance of Aerospace Structures
… presents a stealthy yet significant risk to structural integrity, particularly challenging due to its elusive nature. The approach adopted here diverges from traditional methodologies, focusing on the novel application of Digital Image Correlation (DIC) to map surface area changes during …
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Design, Synthesis, And Evaluation Of Molecular Inhibitors For Biologically Relevant Enzymes
… details the design, synthesis, and biological evaluation of molecular inhibitors for the inhibition of biologically relevant enzymes. The first three chapters of this thesis concern the polyphenol resveratrol and its inhibition of the quinone reductase 2 (QR2) enzyme. The work on this subject …
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Technical management of vlcc/vlbc hull structures based on safety case principles
… involving environmental damage caused by structural failures in ageing oil tankers and bulk carriers has highlighted the importance of structural integrity issues involving these types of ships. Between 1980 and 1996, there were 186 total losses of bulk and combination carriers and 1,278 …
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Investigating the Relationships Between Disorder, Structure, and Dynamics in Amorphous Systems
… surprising low-frequency vibrational modes in structural glasses, and how it arises from the microscopic disorder in the system, we study the spectra of a large ensemble of sparse random matrices where disorder is controlled by the distribution of bond weights and network coordination. When …
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Methodology to Validate Traffic Speed Deflection Devices (TSDDs) Measurements Using Laser Doppler Vibrometers (LDV) Sensors
Pavement structural evaluation is important for effective pavement management and design. Traffic Speed Deflection Devices (TSDDs) provide an efficient way to collect pavement structural condition data at the network-level. However, the integration of TSDD measurements into pavement management and …
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Molecular dynamics simulation and topological analysis of the network structure of actinide-bearing materials
… range of material-dependent analyses - including structural evaluation, species segregation, solubility limits, and assessment of transport properties - to examine their suitability as actinide-bearing materials. The initial portion of this work focuses on actinide waste storage media, examining …
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Network Level Decision-Making Using Pavement Structural Condition Information From The Traffic Speed Deflectometer
Pavement structural condition plays a critical role in the rate of pavement deterioration, yet most state highway agencies' network-level decision-making processes are primarily based on surface distresses. Despite the limitations of the traditional structural condition measuring devices, some …
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Stochastic prediction of collapse of building structures under seismic excitations
… event by ensuring acceptably small likelihood of structural collapse. Therefore, accurate estimate of collapse likelihood of buildings under seismic excitations has recently become critical in efforts to promote hazard-resilience of the society, especially in developing national building codes, …
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Characterizing Lung Inflammation in Agricultural Respiratory Exposures Between the Sexes
… vs. the male response; and 3) observing the structural lung changes of the combined exposure to glyphosate and LPS in female mice as measured using multiple image radiography. Female mice, exposed to LPS and glyphosate for 5 days showed higher levels of inflammatory mediators compared to …
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Structural damage detection using ambient vibrations
… in frequency response are a function of structural stiffness and member end-conditions. Such variations are used as a measure to identify the change in the structural dynamic properties, and ultimately detect damage. A physical model consisting of a 20 × 20 × 1670 -mm long steel square …