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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
61

Nondestructive testing of concrete bridge decks using ground penetrating radar and the chain drag method

Scheff, Jerry J. January 1998 (has links)
Thesis (M.S.)--West Virginia University, 1998. / Title from document title page. Document formatted into pages; contains xv, 144 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 122-124).
62

Microwave nondestructive testing and evaluation of electrical properties of lossy materials

Hasar, Ugur Cem. January 2008 (has links)
Thesis (Ph. D.)--State University of New York at Binghamton, Department of Electrical and Computer Engineering, Thomas J. Watson School of Engineering and Applied Science, 2008. / Includes bibliographical references.
63

Characterization of air voids in fresh cement paste through ultrasonic nondestructive testing

Kmack, Richard Matthew. January 2008 (has links)
Thesis (M. S.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2009. / Committee Chair: Jacobs, Laurence; Committee Co-Chair: Kurtis, Kimberly; Committee Member: DesRoches, Reginald.
64

Generation and detection of lamb waves for the characterization of plastic deformation

Pruell, Christoph. January 2007 (has links)
Thesis (M. S.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2008. / Committee Chair: Jacobs, Laurence; Committee Member: Kim, Jin-Yeon; Committee Member: Qu, Jianmin. Part of the SMARTech Electronic Thesis and Dissertation Collection.
65

Impedance response of alumina-silicon carbide whisker composities

Mebane, David Spencer. January 2004 (has links)
Thesis (M. S.)--Materials Science and Engineering, Georgia Institute of Technology, 2006. / Hamid Garmestani, Committee Member ; Arun M. Gokhale, Committee Member ; Rosario A. Gerhardt, Committee Chair.
66

Analytical investigation of internally resonant second harmonic lamb waves in nonlinear elastic isotropic plates

Mueller, Martin Fritz. January 2009 (has links)
Thesis (M. S.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2010. / Committee Chair: Laurence J. Jacobs; Committee Member: Jianmin Qu; Committee Member: Jin-Yeon Kim. Part of the SMARTech Electronic Thesis and Dissertation Collection.
67

In-process sensing of weld penetration depth using non-contact laser ultrasound system

Rogge, Matthew Douglas. January 2009 (has links)
Thesis (Ph.D)--Mechanical Engineering, Georgia Institute of Technology, 2010. / Committee Chair: Ume, Charles; Committee Member: Chen, Ye-Hwa; Committee Member: Michaels, Jennifer; Committee Member: Sadegh, Nader; Committee Member: Vachtsevanos, George. Part of the SMARTech Electronic Thesis and Dissertation Collection.
68

Cellular analysis by atomic force microscopy : a thesis presented for the degree of Doctor of Philosophy in Electrical and Computer Engineering, University of Canterbury, Christchurch, New Zealand /

Muys, James J. January 1900 (has links)
Thesis (Ph. D.)--University of Canterbury, 2006. / Typescript (photocopy). "November 2006." Includes bibliographical references (p. [153]-161). Also available via the World Wide Web.
69

The study of defects in LEC GaAs using the transmission infrared laser scanning microscope

Kidd, P. January 1989 (has links)
No description available.
70

Electrical Capacitance Measurements to Assess European Corn Borer Infestation in Maize

Thomas, Mavrik D. 14 April 2021 (has links)
The European Corn Borer (ECB), Ostrinia nubilalis, is an agricultural pest which bores small holes in the rind of maize stalks and then proceeds to consume the pith. Because most of the damage to the stalk is internal, it is difficult to quantify the damage to an individual stalk without time-consuming, manual examination. This work explored the hypothesis that internal damage could be detected and quantified using non-destructive, electromagnetic measurements. Laboratory experiments and numerical simulation studies predicted changes in capacitance of stalks due to hollow core ECB damage. A guarded probe device to measure electrical impedance from 500 Hz to 100 kHz was designed and constructed for data collection. A field test with the measurement device was conducted and frequency-swept impedance measurements were taken on field-grown plants with and without ECB damage. Field measurements demonstrated that statistically significant capacitance changes associated with ECB damage could be detected in agreement with numerical simulations of stalk damage. Numerical, laboratory, and field test results all supported the hypothesis that electromagnetic impedance measurements, in particular, capacitance, provide a promising new avenue for ECB damage evaluation. While further research will be needed to further refine this concept, this measurement approach is non-destructive, thus allowing measurements to be performed without sacrificing the infested plants.

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