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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.
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Showing 241 to 250 of 10886 (0.064 seconds)| 241 |
The mechanical and microstructural analysis of the human corneaJohnson, Lindsay W. 05 1900 (has links)
No description available.
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| 242 |
An internal state variable based constitutive model for semi-crystalline polymersShepherd, James Ellison 12 1900 (has links)
No description available.
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| 243 |
An experimental investigation of the thermal stability of soils subjected to a constant heat transfer rateDrew, Brian Christopher 08 1900 (has links)
No description available.
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| 244 |
Thermal properties of linear cellular alloysDempsey, Benjamin 05 1900 (has links)
No description available.
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| 245 |
Properties of undissociated nitrogen, oxygen, air and argon at pressures up to 1,000 atmospheresChen, Chengfang 08 1900 (has links)
No description available.
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| 246 |
Processing study of fine grained piezoelectric materialsRozenburg, Keith Gregory 08 1900 (has links)
No description available.
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| 247 |
High conductivity alloys for extruded metallic honeycombChurch, Benjamin Cortright 05 1900 (has links)
No description available.
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| 248 |
The physical properties of magnetic inksMcCoy, James Martin January 1988 (has links)
The magnetic particle inspection (MPI) method is a widely used non destructive testing (NDT) technique for ferrous structures. Magnetic inks used in MPI are suspensions of fine ferro/ferrimagnetic particles which, when applied to a magnetized test specimen, delineate surface flaws. This work is an investigation of some of the properties of magnetic ink systems and some aspects of their interaction with defect leakage flux. Reviews of magnetism, the MPI method and leakage flux at defects are given. The construction, characterization and automation of a 1.2 T electromagnet vibrating sample magnetometer, used for magnetic measurements on the inks, is described. The instrument has a resolution of better than l0(^-9) JT(^-1) . A 2D model of indication formation in MPI, based upon the simulation of many particles in the neighbourhood of a defect, is presented. Results of the role of several of the model parameters are given. Results indicate that carrier coefficients of viscosity at the lower end of the range investigated (η = 0.3 mPas) are optimum. The size and contrast of an indication increases with defect size. The contrast and rate of formation of contrast increase with defect aspect ratio. The effect of the contrast paint layer thickness indicates that the recommendation of the British Standard, BS 5044 (1973), is qualitatively correct. Experimental observations of particles in field gradients reveals a discrepancy between theoretical and observed behaviour which is attributed, in particular, to unobservable voids in the particles. Detailed characterization of the particles shows them to be aggregates of 20 - 200 nm crystallites which are probably single domain particles. The morphology of larger aggregates is related to measurements of the low field susceptibility. Evidence from intensive magnetic measurements supports the relationship between magnetic properties and aggregate characteristics. A 'In t' magnetic viscosity effect is reported. At 77 K, the coefficient of magnetic viscosity has a maximum near the coercivity field.
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| 249 |
Solution properties of ionised surfactantsMcGhee, B. January 1966 (has links)
No description available.
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| 250 |
Magnetic order in some palladium based Heusler alloysRamadan, M. R. I. January 1975 (has links)
No description available.
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