Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Arnold H. Kahn"'
Autor:
Arnold H. Kahn, Louis C. Phillips
Publikováno v:
Research in Nondestructive Evaluation. 4:237-248
We have performed a theoretical study of the magnetic fields produced by a single turn ac coil encircling a moving conductive rod or tube of flowing liquid metal. A solution exact to first order in the velocity has been obtained as a closed-form inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c135056656a33a01985fd637dbbc169
https://doi.org/10.1080/09349849209409537
https://doi.org/10.1080/09349849209409537
Autor:
Michael F. Ashby, J.J. Wlassich, Roger B. Clough, Y. Geffen, R.J. Schaefer, Haydn N. G. Wadley, Arnold H. Kahn
Publikováno v:
Acta Metallurgica et Materialia. 39:979-986
A detailed experimental evaluation of mathematical models for densification during hot isostatic pressing (HIP) has been conducted using high purity copper powder as a model system. Using a new eddy current sensor, the density of cylindrical compacts
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::639bae8210a86475d300209cc93bfd87
https://doi.org/10.1016/0956-7151(91)90298-f
https://doi.org/10.1016/0956-7151(91)90298-f
Autor:
Arnold H. Kahn, Michael L. Mester
Publikováno v:
Review of Progress in Quantitative Nondestructive Evaluation ISBN: 9781461364740
Eddy current measurement of electrical resistivity provides a method of sensing temperature during metals processing, thus offering a method of feedback control [1,2]. This method assumes a known resistivity-temperature relation for the alloy being p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a2fa8b0680f1f5b11fca8f0f6f7da96
https://doi.org/10.1007/978-1-4615-3344-3_31
https://doi.org/10.1007/978-1-4615-3344-3_31
Publikováno v:
Review of Progress in Quantitative Nondestructive Evaluation ISBN: 9781468457742
The superconducting properties of Ba2YCu3O7-x are strongly dependent on the amount of oxygen contained in the material. Although the physical mechanisms of oxidation have not yet been fully characterized, the reaction rates appear to be influenced by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c953e508477e0eea64e59c0017a5946
https://doi.org/10.1007/978-1-4684-5772-8_268
https://doi.org/10.1007/978-1-4684-5772-8_268
Publikováno v:
Review of Progress in Quantitative Nondestructive Evaluation ISBN: 9781468457742
Most existing eddy current methods implicitly assume uniform electrical conductivity throughout the sample. However, eddy current measurements recorded over a range of frequencies extract conductivity information over a range of depths, and, thus, ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6585deaef0e56d26766846fac1f3f8c
https://doi.org/10.1007/978-1-4684-5772-8_260
https://doi.org/10.1007/978-1-4684-5772-8_260
Publikováno v:
Journal of Applied Physics. 63:4568-4571
Four‐point probe measurements have been made on (100) n‐type Czochralski silicon wafers of initial resistivities 0.016, 0.96, and 3.35 Ω cm. The probe tips straddled linear single scratches formed by a Vickers pyramid diamond. The diamond was de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d08d5c8b4e67b8c7cff700caca75703e
https://doi.org/10.1063/1.340156
https://doi.org/10.1063/1.340156
Autor:
Jeremiah R. Lowney, Arnold H. Kahn
Publikováno v:
Solid State Communications. 46:229-233
A method for calculating the electronic density of states of a semiconductor in the presence of impurity scattering is given. The approach is based on a low density multiple scattering expansion. The calculation treats the density of states of the co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44865d38df50b60e1ef89fe3b65650f9
https://doi.org/10.1016/0038-1098(83)90257-0
https://doi.org/10.1016/0038-1098(83)90257-0
Autor:
Arnold H. Kahn
Publikováno v:
Physical Review B. 16:64-72
An analysis has been made of the eddy currents in a conducting solid in the shape of a long rectangular prism, with the applied rf magnetic field perpendicular to the length. The results are expressed in terms of a complex susceptibility. This, in tu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45b53e64a0ceebfcf847474424c434ff
https://doi.org/10.1103/physrevb.16.64
https://doi.org/10.1103/physrevb.16.64
Publikováno v:
Research in Nondestructive Evaluation. 1:167-179
A method for reconstructing radially varying conductivity profiles in cylindrical conductors is described. Solenoidal driving and sensing coils surround the cylindrical sample and an AC magnetic field applied by the driving solenoid induces axisymmet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7785a62054b21c05bde1c64e54f32d6
https://doi.org/10.1080/09349848909409474
https://doi.org/10.1080/09349848909409474
Autor:
Arnold H. Kahn
Publikováno v:
Journal of Applied Physics. 46:4965-4969
A theoretical analysis of the eddy currents in an anisotropically conducting solid is given. The geometry considered is that of a long rectangular prism with the applied rf field parallel to the length. The solution for the rf field in the solid has
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::834a928249fe16d849210a6d886ce46f
https://doi.org/10.1063/1.321482
https://doi.org/10.1063/1.321482