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Topic Area: Environment/Climate
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Displaying records 321 to 330 of 445 records.
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321. On the dynamics of high-speed milling with long slender endmills
Topic: Environment/Climate
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

322. Process Effects on White Layer Formation in Hard Turning
Topic: Environment/Climate
Published: 1/1/1998
Authors: Y K Chou, Christopher J. Evans
Abstract: This paper discusses surface microstructural alterations in hard turned steels. A metallurgically unetchable structure, called white layer?, followed by a dark etching layer has been found on AISI 52100 steel surfaces machined in a hardened state (60 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820029

323. Time Domain Modal Estimation
Topic: Environment/Climate
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

324. Ultrasonic Detection of Unstable Plastic Flow in Hard Metal Cutting
Topic: Environment/Climate
Published: 1/1/1998
Authors: Matthew A. Davies, Gerald V. Blessing, Christopher J. Evans, Steven Earl Fick
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820062

325. White layers and thermal modeling of hard turned surfaces
Topic: Environment/Climate
Published: 1/1/1998
Authors: Y K Chou, Christopher J. Evans
Abstract: White layers in hard turned surfaces are identified, characterized and measured as a function of tool flank wear and cutting speed. White layer depth progressively increases with flank wear. It also increases with speed, but approaches an asymptote. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820094

326. High-Speed Machining
Topic: Environment/Climate
Published: 12/20/1997
Authors: Matthew A. Davies, S J Smith
Abstract: Increasing the power and speed of machining operations has several advantages. These include: [1] shorter machining time; [2] improved surface finish; [3] reduced thermal and mechanical stresses on the workpiece and tool, and [4] increased dynamic st ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820014

327. Establishing Baseline Levels of Elements in Marine Mammals Through Analysis of Banked Liver Tissues
Topic: Environment/Climate
Published: 12/1/1997
Authors: Paul R Becker, Elizabeth A Mackey, R. Demiralp, B. J. Koster, Stephen A Wise
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=100483

328. Fabrication of Plastic Microfluid Channels by Imprinting Methods
Topic: Environment/Climate
Published: 12/1/1997
Authors: Larissa Evgenievna Martynova, Laurie E Locascio, Michael Gaitan, Gary W Kramer, Richard G. Christensen, William Ambrose MacCrehan
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903674

329. Loadings of Atmospheric Trace Elements and Organic Contaminants to the Chesapeake Bay
Topic: Environment/Climate
Published: 12/1/1997
Authors: J E Baker, Dianne L Poster, C A Clark, T M Church, J R Scudlard, J M Ondov, R M Dickhut, G Cutter
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=100476

330. Mechanisms of Wet Deposition
Topic: Environment/Climate
Published: 12/1/1997
Authors: Dianne L Poster, J E Baker
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=100539



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