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Author: johannes soons

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41. Error Analysis of a Hexapod Machine Tool
Published: 4/3/1997
Author: Johannes A Soons
Abstract: This paper describes the measurement and analysis of the quasi-static errors of a prototype hexapod milling machine at the National Institute of Standards and Technology (NIST). Emphasis is placed on a) the identification and definition of the parame ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820009

42. Magnetic field dependence of the critical current anisotropy in normal metal-YBa,Cu307-delta thin-film bilayers
Published: 3/18/1991
Authors: Ronald H. Ono, Loren Frederick Goodrich, James A Beall, Johannes A Soons, Carl D Reintsema
Abstract: We have measured the transport critical current density (Jc) in epitaxial quality films of YBa2Cuj07-delta some of which were covered by thin (10 nm) Ag films. The films, both with and without Ag, had Jc values greater than 10^6 A/cm2 in liquid nit ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905746

43. Performance Evaluation of a Parallel and a Hybrid Machine Tool
Series: Journal of Research (NIST JRES)
Report Number: 6567
Published: Date unknown
Authors: Johannes A Soons, S M Athavale, R Furness
Abstract: vances in both the technology and cost of controllers have enabled the commercial introduction of machine tools with a parallel configuration of the positioning axes. In theory, this radical change in design enables improvements in key machine chara ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823290



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