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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.
21

Developing the capability to examine environmental effects on small fatigue crack growth

Gockel, Brian Timothy, January 2010 (has links)
Thesis (M.S. in Mechanical Engineering) -- University of Dayton. / Title from PDF t.p. (viewed 06/22/10). Advisor: Robert Brockman. Includes bibliographical references (p. 42-44). Available online via the OhioLINK ETD Center.
22

Sapphire fiber based high temperature extensometer

Fang, Xiaojun 26 January 2010 (has links)
<p>New sapphire fiber based sensor structures for high temperature strain measurement are proposed and studied in this report. The self-mixing interferometry has been studied and tested. The advantage of this technique is the source coherence insensitivity and direction distinguishment capability. Fringes of the self-mixing interferometer built with standard multimode fiber and sapphire fiber were observed. The application of this technique to static strain rneasurement seems difficult to stabilize, whereas its implementation to acoustic sensing with single-mode fiber coil as the sensing component will be very interesting. The approach by Moire interferometry and equal-path coherence matching interferometer are two promising methods for high temperature displacement measurement. The advantages of the Moire interferometer are source coherence independence and large measurement range. The advantage of coherence matching absolute interferometer is its simplicity in sensor structure. The structures of coherence matching methods and multiplexing techniques are generalized. From this research, we can conclude that the sapphire fiber based high temperature extensometer may be realized by different methods.</p> / Master of Science
23

The decomposition of molybdenum disulphide in an induction plasma tailflame/

Munz, Richard J. (Richard Jürg) January 1974 (has links)
No description available.
24

Finite element modeling and computer simulation of stresses and strains in diamond anvil cell devices

Kondrat'yev, Andreiy I. January 2006 (has links) (PDF)
Thesis (Ph. D.)--University of Alabama at Birmingham, 2006. / Additional advisors: Heng Ban, Renato P. Camata, Krishan K. Chawla, Joseph G. Harrison. Description based on contents viewed Feb. 13, 2009; title from PDF t.p. Includes bibliographical references (p. 124-126).
25

High temperature X-ray diffraction experiments on Pb (Zr, Ti) O3.

January 1993 (has links)
Kwan Wing Tak. / On t.p., "3" is subscript following the word: Pb (Zr, Ti) O" in the title. / Title also in Chinese characters. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1993. / Includes bibliographical references (leaves [96-100]). / Acknowledgement / Abstract / Chapter Chapter 1 --- Introduction --- p.1-1 / Chapter Chapter 2 --- Experimental Set-Up and Procedure / Chapter Section 2.1 --- General Description of Experiments --- p.2-1 / Chapter Section 2.2 --- High Temperature X-ray Diffraction Technique --- p.2-1 / Chapter Section 2.3 --- Sawyer-Tower Bridge --- p.2-3 / Chapter Section 2.4 --- Thermomechnical Analysis System(TMS) & Differential Scanning Calorimeter(DSC) --- p.2-4 / Chapter Section 2.5 --- Laser Experiment --- p.2-4 / Chapter Chapter 3 --- X-ray Experimental Results / Chapter Section 3.1 --- Investigation of PZT film on (100) MgO Single Crystal Substrate --- p.3-1 / Chapter Section 3.2 --- Investigaiton of PZT Bulk Materials by X-ray Diffractometer and Vacuum Chamber --- p.3-3 / Chapter Chapter 4 --- Experimental Data from TMS / Chapter Section 4.1 --- Experimental Details --- p.4-1 / Chapter Section 4. 2 --- Results --- p.4-2 / Chapter Chapter 5 --- "Measurement of Curie temperature using Ferroelectric Properties, Heat Capacity and Piezoelectric Properties of PZT" / Chapter Section 5.1 --- Investigation of the Ferroelectric Properties of PZT Bulk Material by Sawyer´ؤTower Bridge --- p.5-1 / Chapter Section 5.2 --- Investigation of the Heat Capacity of PZT Bulk Material by Differential Scanning Calorimeter (DSC) --- p.5-2 / Chapter Section 5.3 --- Investigation of Piezoelectric Properties of PZT Bulk Material by Laser Method --- p.5-3 / Chapter Section 5.4 --- Discussion of Results --- p.5-4 / Chapter Section 5.5 --- Data Summary --- p.5-5 / Chapter Chapter 6 --- Data Analysis and Discussion / Chapter Section 6.1 --- Analysis of Structural X-ray Data --- p.6-1 / Chapter Section 6.2 --- Analysis of TMS Data --- p.6-2 / Chapter Section 6.3 --- Discussion --- p.6-4 / Chapter Chapter 7 --- Conclusion --- p.7-1 / Reference
26

Wear of high speed, high current density slip ring materials at elevated temperatures

Stephenson, David Alan January 1981 (has links)
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1981. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING. / Includes bibliographical references. / by David Alan Stephenson. / B.S.
27

Computational design of ultra-high temperature ceramic composite materials

Petla, Harita. January 2008 (has links)
Thesis (M.S.)--University of Texas at El Paso, 2008. / Title from title screen. Vita. CD-ROM. Includes bibliographical references. Also available online.
28

The mechanical behavior of faulted rock at high temperature and pressure.

Stesky, Robert Michael January 1975 (has links)
Thesis. 1975. Ph.D.--Massachusetts Institute of Technology. Dept. of Earth and Planetary Sciences. / Vita. / Includes bibliographical references. / Ph.D.
29

Elastic properties and fracture behavior of graphite/polyimide composites at extreme temperatures

Garber, D. P. (Donald P.) January 1983 (has links)
M.S.
30

Prediction of the temperature distribution in asphalt pavement samples

Burger, Marco 04 1900 (has links)
Thesis (MScEng)--Stellenbosch University, 2005. / ENGLISH ABSTRACT: The convection heat transfer coefficient between an infinite, horizontal surface and the natural environment is determined experimentally. It is shown that, during daytime, heat is transferred due to natural and forced convection, while during nighttime heat is transferred due to conduction and forced convection. Equations that correlate the daytime and nighttime convective heat transfer coefficients respectively, are presented. The results are compared with values obtained by other investigators. The equations for the convection heat transfer coefficient are then used to predict the surface temperature and the temperature at depth of asphalt pavement samples using a simulation model. It is found that there is good agreement between the measured and the predicted asphalt pavement sample temperatures. / AFRIKAANSE OPSOMMING: Die konveksie warmteoordrags-koëffisiënt tuseen 'n oneindige, horisontale oppervlak en die natuurlike omgewing is eksperimenteel bepaal. Daar word getoon dat warmte, tydens die dag, oorgedra word deur natuurlike en geforseerde konveksie, terwyl warmte tydens die nag oorgedra word deur geleiding en geforseerde konveksie. Die resultate word vergelyk met die resultate van ander navorsers. Vergelykings wat die konveksie warmteoordrags-koëffisiënt gedurende die dag en nag onderskeidelik korreleer word voorgestel. Die vergelykings vir die konveksie warmteoordrags-koëffisiënt word dan gebruik in 'n simulasiemodel om die oppervlaktemperatuur en die temperatuur onder die oppervlakte van asfalt-padoppervlakmonsters te voorspel.

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