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.
Results
Showing 1 to 12 of 12 for “"Cylindrical specimen"”.
-
A cylindrical specimen holder for electron cryo-tomography
… tomography, caused by the use of slab-like flat specimens, which increase in thickness when tilted to high angles. Attempts have been made to reduce the undesirable effects caused by the missing wedge, but the problem remains, particularly for the radiation-sensitive frozenhydrated specimens used …
-
A cylindrical specimen holder for electron cryo-tomography
… tomography, caused by the use of slab-like flat specimens, which increase in thickness when tilted to high angles. Attempts have been made to reduce the undesirable effects caused by the missing wedge, but the problem remains, particularly for the radiation-sensitive frozen-hydrated specimens …
-
A theoretical one-dimensional analysis of the transient temperature and stress distributions in a long cylinder subjected to conductive cooling and heating
… used to model quench tests conducted with long cylindrical specimens in fluids, heat transfer within the fluid is described by the heat conduction equations while heat convection is neglected. Analytical solutions for the temperatures and stresses as functions of the time and of the radial …
-
Thermal conductivity of superconducting niobium
… Measurements were made on a single crystal cylindrical specimen for which R300/R ~ 200. The thermal 4.2:N conductivity in the superconducting state exhibited a maximum near 1.80 K. This maximum has been attributed to enhanced lattice conductivity as the electrons cono dense into the ground …
-
Evaluation of the laboratory resilient modulus test using a New Mexico subgrade soil
… is a laboratory determined parameter, where a cylindrical specimen is subjected to dynamic axial stresses under confining stresses, while axial deformations are measured. By definition Mr is the ratio of the peak axial stress to the corresponding recoverable axial strain. Currently, there are …
-
Nondestructive Analysis of Advanced Aerospace Materials via Spectroscopy and Synchrotron Radiation
… within the thermal barrier coatings, on a hollow cylindrical specimen, provided results that indicate variations within the TGO. Comparison of measured photo-luminescence spectra of the specimen before and after long duration thermal aging showcases the development of the system and the initiation …
-
Interlaminar Deformation at a Hole in Laminated Composites: A Detailed Experimental Investigation Using Moire Interferometry
The deformation on cylindrical surfaces of holes in tensile loaded laminated composite specimens was measured using new moire interferometry techniques. These new techniques were developed and evaluated using a 7075-T6 aluminum control specimen. Grating replication techniques were developed for …
-
Advancements in the Split Hopkinson Bar Test
… of two long slender bars that sandwich a short cylindrical specimen between them. By striking the end of a bar, a compressive stress wave is generated that immediately begins to traverse towards the specimen. Upon arrival at the specimen, the wave partially reflects back towards the impact end. …
-
High strain rate properties of materials using Hopkinson bar techniques
… are performed by dynamically loading a small cylindrical specimen between two rods that are instrumented with strain gauges. The data from these strain gauges are used to calculate stress and strain in the specimen as functions of time. Chapter two contains an account of the Hopkinson bar …
-
Finite element simulation of stress evolution in thermal barrier coating systems
… interface. The FE model reproduced the specimen geometry used in corresponding experiments. It comprises a periodic unit cell representing a slice of the cylindrical specimen, whereas the periodic length of the unit cell equals an idealized wavelength of the rough metal/ceramic …
-
Thermo-elastic-plastic analysis for elastic component under high temperature fatigue crack growth rate.
… under isothermal fatigue loading for solid cylindrical specimen and the theoretical modelling with the numerical simulation for tubular specimen when subjected to cyclic mechanical loading superimposed by cyclic thermal shock.The experimental part of this research programme studied the …
-
Development and validation of a novel testing procedure for the evaluation of rutting susceptibility of bituminous binders.
… the three mixtures were analyzed by subjecting cylindrical specimen to Flow number tests on APMT. Flow number has been recognized as newly anti-rutting indicator of asphalt mixtures. Flow numbers for all the mixtures were measured at 3 different temperatures (46°C, 52°C and 58°C). These testing …