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Author: balasubramanian muralikrishnan

Displaying records 21 to 30 of 33 records.
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21. Recent developments in large-scale dimensional metrology
Published: 7/30/2009
Authors: G Peggs, P.G Maropoulos, E.B Hughes, Alistair Forbes, S Robson, M Ziebart, Balasubramanian Muralikrishnan
Abstract: With ever-more demanding requirements for the accurate manufacture of large components, dimensional measuring techniques are becoming progressively more sophisticated. This review describes some of the more recently-developed techniques and the stat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=824697

22. ASME B89.4.19 Performance Evaluation Tests and Geometric Misalignments in Laser Trackers
Published: 1/30/2009
Authors: Balasubramanian Muralikrishnan, Daniel S Sawyer, Christopher J Blackburn, Steven David Phillips, Bruce R. Borchardt, William Tyler Estler
Abstract: Small and unintended offsets, tilts, and eccentricity of the mechanical and optical components in laser trackers introduce systematic errors in the measured spherical coordinates (angles and range readings), and possibly in the calculated lengths of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=824664

23. Performance Evaluation of Laser Trackers
Published: 9/15/2008
Authors: Balasubramanian Muralikrishnan, Daniel S Sawyer, Christopher J Blackburn, Steven David Phillips, Bruce R. Borchardt, William Tyler Estler
Abstract: The American Society for Mechanical Engineers (ASME) recently released the ASME B89.4.19 Standard [1] on performance evaluation of spherical coordinate instruments such as laser trackers. At the National Institute of Standards and Technology (NIST), ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=824702

24. Area Measurement of Knife Edge and Cylindrical Apertures using Ultra Low Force Contact Fiber Probe on a CMM
Published: 1/1/2008
Authors: Balasubramanian Muralikrishnan, Jack A Stone Jr, John Richard Stoup
Abstract: Several radiometric and photometric measurements depend on high accuracy area measurement of precision apertures. Some apertures have sharp edges and are generally measured optically. At the Precision Engineering Division (PED) of the National Instit ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=824632

25. Laser Tracker Testing at NIST Using the ASME B89.4.19 Standard
Published: 1/1/2007
Authors: Balasubramanian Muralikrishnan, Christopher J Blackburn, Daniel S Sawyer, Bruce R. Borchardt, William Tyler Estler, Steven David Phillips
Abstract: While the versatility and economics of laser trackers are quite appealing, the ability to assess their accuracy and to compare various brands has been limited by a lack of a national or international standard that encompasses testing and traceability ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=824608

26. Roundness Measurements Using the NIST Fiber Probe
Published: 1/1/2007
Authors: Balasubramanian Muralikrishnan, Jack A Stone Jr, John Richard Stoup
Abstract: We have described a fiber probe for dimensional measurement of micro-holes in the 2004 and 2006 ASPE annual meetings. In this abstract, we describe the adaptation of this probe for measuring roundness of tiny holes and knife edge apertures. In its cu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823241

27. Enhanced Capabilities of the NIST Fiber Probe for Microfeature Metrology
Published: 1/1/2006
Authors: Balasubramanian Muralikrishnan, Jack A Stone Jr, John Richard Stoup
Abstract: We have previously reported work in the area of fiber probe development at NIST for micro feature measurement. This probe, which we refer to as the Fiber Deflection Probe, functions by optically imaging the stem from two orthogonal directions a few m ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823213

28. Fiber Deflection Probe Uncertainty Analysis for Micro Holes
Published: 1/1/2006
Authors: Balasubramanian Muralikrishnan, Jack A Stone Jr, John Richard Stoup
Abstract: We have recently reported on a new probe, the Fiber Deflection Probe (FDP), for diameter and form measurement of large aspect ratio micro-holes (100 um nominal diameter, 5 mm deep). In this paper, we briefly review the measurement principle of the FD ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823200

29. Fiber Deflection Probe for Small Hole Metrology
Published: 1/1/2006
Authors: Balasubramanian Muralikrishnan, Jack A Stone Jr, John Richard Stoup
Abstract: This paper presents the development of a new probing method for Coordinate Measuring Machines (CMM) to inspect diameter and form of small holes. The technique, referred to as fiber deflection probing, can be used for holes of approximately 100 mm nom ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822250

30. A Fiber Probe for CMM Measurements of Small Features
Published: 8/1/2005
Authors: Jack A Stone Jr, Balasubramanian Muralikrishnan, John Richard Stoup
Abstract: We report on performance of a new form of fiber probe, which can be used in conjunction with a coordinate measuring machine (CMM) for microfeature measurement.  The probe stylus is a glass fiber with a small ball (?75 ?m diameter) glued to the e ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823194



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