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You searched on: Author: jon pratt

Displaying records 81 to 87.
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81. Dynamic Interrogation of a Basic Cutting Process
Published: 7/1/1999
Authors: Matthew A. Davies, Michael Kennedy, Jon Robert Pratt, Christopher J. Evans
Abstract: A dynamic cutting fixture based on the test rig pioneered by Peters et al. has been developed to aid investigations of cutting process dynamics. This active fixture consists of a flexure-based tool holder with a single dominant modal direction, two v ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=821933

82. A Wide Bandwidth Printed Wiring Board Transmission Line Probe
Published: 3/1/1999
Authors: Nicholas G Paulter Jr., Jon Robert Pratt
Abstract: An inexpensive, wide bandwidth, high cycle 50 {omega} probe is described for making electrical contact to printed wiring board planar transmission lines. The electrical transfer function of the probe and its contact repeatability are presented.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=13673

83. Frequency Domain Modal Estimation Techniques, Experimental Techniques
Published: 1/1/1998
Authors: S Fahey, Jon Robert Pratt
Abstract: In this brief, we discuss the estimation of modal parame-ters using single-degree-of-freedom approximations. Then, we proceed to review two multi-degree-of- freedom techniques for modal parameter estimations-the first based on dynamic matrices and th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820115

84. On the dynamics of high-speed milling with long slender endmills
Published: 1/1/1998
Authors: Matthew A. Davies, A Schaut, Jon Robert Pratt, Brian S. Dutterer
Abstract: Tool deflections of high length-to-diameter ratio endmills are measured with capacitance probes during high-speed milling and compared with the predictions of regenerative chatter theory. Poincar? sectioning (once per revolution sampling) techniques ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820067

85. Time Domain Modal Estimation
Published: 1/1/1998
Authors: S Fahey, Jon Robert Pratt
Abstract: In a previous technical feature,2 we described some motives for performing structural dynamic tests and subsequently reviewed some frequency domain techniques for uncovering modal parameters. This time, we take up some applicable time domain algorith ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820116

86. The NIST Digitally Synthesized Power Calibration Source
Series: Technical Note (NIST TN)
Report Number: 1281
Published: 8/1/1990
Authors: Nile M. Oldham, Owen Brede Laug, Bryan C Waltrip, Jon Robert Pratt
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=24104

87. First measurements of the flux integral with the new NIST-4 watt balance
Published: 3/31/0015
Authors: Darine El Haddad, Frank Christian Seifert, Leon S Chao, Yusi A. Cao, Georgio Alberto Sineriz, Jon Robert Pratt, David B Newell, Stephan Schlamminger
Abstract: In early 2014, construction of a new watt balance, named NIST-4, has started at the National Institute of Standards and Technology (NIST). In a watt balance, similar to a mass comparator, the gravitational force of an unknown mass is compensated by a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916648



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