Global ETD Search
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 118 for “"Nondestructive Evaluation"”.
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Nondestructive evaluation of historic structures
… with destructive testing, engineers use nondestructive evaluation (NDE) to determine the location of key structural elements, locate defects or anomalies in a material, and to determine the quality of a material. Although NDE usually is best applied to homogeneous materials, such as …
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Reflection seismology for nondestructive evaluation
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2002.
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NONDESTRUCTIVE EVALUATION USING REAL-TIME SHEAROGRAPHY
… explore in depth its potential applications in nondestructive testing and vibration analysis. The development of a simple and effective technique for determining fractional fringe order is also another primary objective in this project. The principle behind the formation of high resolution …
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Nondestructive evaluation for hybrid-composite girder bridges
… to be presented is focused on the application of nondestructive evaluation (NDE) technologies of thermography, ultrasonic testing, and acoustic emission testing to assess the quality of placement within the arch section of the HCB. Tap testing, another NDE technique, was also used to test the …
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Scanning measurement testbed for advanced nondestructive evaluation
… safety, have necessitated the development of nondestructive testing methods to quantify the life and reliability of a product during manufacture and service. Described herein, is a testbed to be used in the research and development of these testing methods. A brief motivation for using …
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Impedance-based Nondestructive Evaluation for Additive Manufacturing
Impedance-based Non-Destructive Evaluation for Additive Manufacturing (INDEAM) is rooted in the field of Structural Health Monitoring (SHM). INDEAM generalizes the structure-to-itself comparisons characteristic of the SHM process through introduction of inter-part comparisons: instead of comparing …
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Microwave imaging of concrete structures from nondestructive evaluation
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1998.
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Nondestructive evaluation and underwater repair of composite structures
… cost, and simplify repairs. Though underwater nondestructive evaluation of composites has not been well documented, this thesis illustrates the available technologies for underwater evaluation and repair of laminated composite structures, similar to those currently used in marine applications. …
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Nondestructive evaluation of concrete using wideband microwave techniques
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1995.
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Nondestructive evaluation of complex geometry advanced material components
The potential of many nondestructive inspection methods and evaluation procedures are often demonstrated under rather pristine conditions. Considerable difficulty may result from attempting to apply such methodologies to actual components. This is further complicated if the material is …
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Nondestructive evaluation of wooden logs using ground penetrating radar
… down time and maintenance costs of saw mills.;Nondestructive scanning of logs using techniques such as Ground Penetrating Radar (GPR) prior to sawing can greatly increase the productivity and yield of high value lumber. Currently GPR has been widely used for civil engineering applications for …
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Nondestructive evaluation of FRP composite members using infrared thermography
… infrared thermography as an effective tool for nondestructive evaluation of structural members made of fiber reinforced polymer (FRP) composite materials. The applicability of this method for the detection of subsurface anomalies such as voids, cracks, debonding, and delaminations in concrete …
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Phononic materials as ultrasonic filters in nondestructive evaluation measurements
Nonlinear ultrasound is a nondestructive evaluation method that is sensitive to microscopic material damage, which is highly desirable information to prevent failure of critical components. The damage is correlated to the second harmonics generated in a material by a sinusoidal signal. However, …
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Lattice modeling of ultrasonic nondestructive evaluation of attenuating materials
… require their periodic characterization with nondestructive evaluation. When subjected to ultrasonic waves, nanocomposites often exhibit attenuation that is an order of magnitude higher than that of carbon fiber reinforced polymeric composites. Thus, an accurate model of ultrasonic wave …
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Nondestructive evaluation of composite rods using ultrasonic wave propagation
Nondestructive Evaluation (NDE) is a branch of applied science that is concerned with assessing the properties and serviceability of materials and structures without causing collateral damage or depreciation. This study presents a detailed analysis of advanced composite rods (comprised of two or …
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Nondestructive Evaluation of Zirconium Phosphate Bonded Silicon Nitride Radomes
… to use. Visible, thermographic and ultrasonic nondestructive evaluation (NDE) methods have been tested with Zr-PBSN discs containing fabricated flaws likely to be present in a radome. Ultrasonic C-scanning using a 0.25" diameter, 15 MHz focused transducer with a pulse-echo configuration was …
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Data fusion techniques for nondestructive evaluation and medical image analysis
… of methods to perform data fusion for nondestructive evaluation (NDE) and medical imaging applications. The general framework for these applications includes region-of-interest (ROI) detection followed by feature extraction and classification of the detected ROI. Image processing …
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Nondestructive Evaluation/characterization of Airport Pavements Using Stress Wave Methods
… of a universal design, characterization, and evaluation methodology that integrates the NDE method, and which is equally applicable to all physically possible media. Engineering features that may be studied using energy analyses include structural efficiency, component coupling details, …
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Nondestructive evaluation of a high temperature ceramic matrix composite material
The purpose of this investigation was to nondestructively characterize a 2-D Nicalon-reinforced, CVI-SiC matrix composite before and after exposure to 1000, 1200, and 1400 °C in oxidizing atmospheres of air. Concurrently, the nondestructive testing methods used to detect thermally induced changes …
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