Engineering Commons^™

Contributions To The Specific Heat Capacity Of Nickel, Iron, And The Alloy Ni3Fe, Thomas Gilman Kollie

Doctoral Dissertations

The specific heat capacity at constant pressure C_p of a ferromagnetic solid is assumed separable into six contributions - that due to the dilation of the lattice C_d, that due to the harmonic oscillations of the atoms C_vh, that due to the anharmonic oscillations of the electrons C_va, that due to changes in energy distributions of the electrons C_ve, that due to changes in the magnetic coupling among the electrons C_vm, and that due to atomic rearrangements C_vw. Expressions appearing in the literature for these contributions, which …

The Zeroth-Order Current Distribution In Arbitrary Arrays Of Thin-Linear Dipoles, Samuel Benton Roberts

Doctoral Dissertations

The potentials at the terminals of the elements of an array of N thin-linear dipoles is calculated using zeroth-order currents. It is shown that if even currents are present on the elements, the terminal potentials cannot be balanced, and that if the terminal potentials are balanced, odd currents must exist on the elements. A simple method of calculating the complex ratio of odd to even currents on each element is given. The method is applied to several arrays, and the results for tangential circular arrays are compared to an accurate numerical solution. The approximate method has the accuracy of the …

An Experimental Study Of The Viscoseal Bearing, Chandrakant Khumaji Shah

Masters Theses

The experimental data obtained from two groove geometries of the viscoseal bearing were analyzed to study the bearing characteristics and the sealing performance. The experimental bearing characteristics were compared with the Dubois and Ocvirk Short-bearing Approximation. The sealing performance analysis of the bearing included (1) the determination of the sealing coefficient which was compared with the Stair and Hale method of theoretical prediction and (2) the effect of the bearing eccentricity ratio on the sealing coefficient, which was compared with the Vohr and Chow method of theoretical prediction.

The results of the study indicated that, at constant load and speed, …