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NIST Authors in Bold
|Author(s):||Jun-Feng Song; Theodore V. Vorburger; Thomas B. Renegar; Xiaoyu A. Zheng; Hyug-Gyo Rhee; John M. Libert; Li Ma; K Bogart; Susan M. Ballou; B Bachrach;|
|Title:||Correlation of Topography Measurements of NIST SRM 2460 Standard Bullets by Four Techniques|
|Published:||January 01, 2006|
|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 Technology (NIST) Standard Reference Material (SRM) 2460 standard bullet. The 2D profile signatures are compared with the virtual bullet standard signature established by a stylus-based measurement system at NIST. The bullet signature differences are quantified by the maximum cross-correlation function CCFmax. If the compared signatures were exactly the same, CCFmax would be 100%. Comparison results show close agreement among the four techniques for bullet profile signature measurements. The average CCFmax values are higher than 90%. This supports the possibility of using surface topography techniques for ballistic identifications as an alternative to the current technology based on image comparisons.|
|Citation:||Measurement Science & Technology|
|Pages:||pp. 500 - 503|
|Keywords:||auto-correlation function,confocal microscope,cross-correlation function,standard bullet,standard reference material,topography comparison|
|Research Areas:||Metrology, Manufacturing|