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You searched on: Author: jun-feng song

Displaying records 31 to 40 of 126 records.
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31. Verifying Measurement Uncertainty Using a Control Chart With Dynamic Control Limits
Published: 9/1/2007
Authors: Jun-Feng Song, Theodore Vincent Vorburger
Abstract: A control chart with dynamic control limit is proposed for promoting the developing process of an uncertainty budget, and verifying the developed measurement uncertainty. The up and low dynamic control limit, 2 sd, is calculated from the updated ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823223

32. Surface Topography Analysis for a Feasibility Assessment of a National Ballistics Imaging Database
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7362
Published: 5/1/2007
Authors: Theodore Vincent Vorburger, James H Yen, B Bachrach, Thomas B Renegar, Li Ma, Hyug-Gyo Rhee, Xiaoyu A Zheng, Jun-Feng Song, Charles Dewey Foreman
Abstract: This document reports on a study to determine the feasibility and utility of a national ballistics database of casing and bullet images. The purpose of such a proposed database would be to provide a reference collection of ballistic images against ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822733

33. Comparison of Optical and Stylus Methods for Measurement of Rough Surfaces
Published: 1/1/2007
Authors: Theodore Vincent Vorburger, H G Rhee, Thomas B Renegar, Jun-Feng Song, Xiaoyu A Zheng
Abstract: Abstract Optical methods are increasingly used for measurement of surface texture, particularly for areal measurements where the optical methods are generally faster. A new Working Group under Technical Committee (TC) 213 in the International Organiz ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=824605

34. NIST Standard Bullets and Casings Project
Published: 1/1/2007
Authors: Jun-Feng Song, Theodore Vincent Vorburger, Susan M Ballou, Thomas B Renegar, Li Ma, Eric Paul Whitenton, David R Kelley, Robert A. Clary, A Zheng, M Ols
Abstract: The National INstitute of Standards and Technology (NIST) standard bullets and casings project will provide support to firearm examiners and to the National Integrated Ballistics Information Network (NIBIN) in the United States. The standard bullet i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822141

35. Tolerancing Form Deviations for NIST Standard Reference Material (SRM) 2809 Rockwell Diamond Indenters
Published: 1/1/2007
Authors: Jun-Feng Song, Samuel Rea Low III, Li Ma
Abstract: The National Institute of Standards and technology (NIST) plans to develop Standard Reference Material (SRM) 2809 Rockwell Diamond Indenter to support Rockwell hardness standardization.  Most tolerances of the SRM indenters are adopted from thos ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823240

36. Verifying Measurement Uncertainty Using a Control Chart With Dynamic Control Limits
Published: 1/1/2007
Authors: Jun-Feng Song, Theodore Vincent Vorburger
Abstract: We propose a control chart with dynamic control limits that promotes the process of developing and refining an uncertainty budget and verifying the measurement uncertainty. The upper and lower dynamic control limits, µ +2s and µ - 2s, are ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=824602

37. Calibration Reproductibility Test for NIST's No. 3581 Standard Rockwell Diamond Indenter
Published: 1/1/2006
Authors: Jun-Feng Song, Samuel Rea Low III, A Zheng
Abstract: Standard Rockwell diamond indenter plays an important role for a worldwide unified Rockwell hardness scale.  In 1994, NIST established a microform calibration system with sufficiently small calibration uncertainty for the calibration of standard ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823202

38. Correlation of Topography Measurements of NIST SRM 2460 Standard Bullets by Four Techniques
Published: 1/1/2006
Authors: Jun-Feng Song, Theodore Vincent Vorburger, Thomas B Renegar, Hyug-Gyo Rhee, A Zheng, L Ma, John M Libert, Susan M Ballou, B Bachrach, K Bogart
Abstract: Three optical instruments including an interferometric microscope, a Nipkow disk confocal microscope and a laser scanning confocal microscope are used for the measurements of bullet profile signatures of a NIST (National Institute of Standards and Te ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823187

39. Correlation of Topography Measurements of NIST SRM 2460 Standard Bullets by Four Techniques
Published: 1/1/2006
Authors: Jun-Feng Song, Theodore Vincent Vorburger, Thomas B Renegar, Xiaoyu A Zheng, Hyug-Gyo Rhee, John M Libert, Li Ma, K Bogart, Susan M Ballou, B Bachrach
Abstract: Three optical instruments including an interferometric microscope, a Nipkow disk confocal microscope and a laser scanning confocal microscope are used for the measurements of bullet profile signatures of a National Institute of Standards and Technolo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822359

40. The Effect of Gaussian Filter Long Wavelength Cutoff in Topography Comparisons and Measurements
Published: 1/1/2006
Authors: Jun-Feng Song, Lijun Ma, Theodore Vincent Vorburger
Abstract: Five parameters are used for 2D and 3D topography comparisons and measurements, those include two correlation parameters Ds and CCFmax , and three surface parameters: the r-m-s roughness Rq (or Sq for 3D), r-m-s waviness Wq and Gaussian filter long w ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823217



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