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Author: theodore doiron
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1. 20 Degrees Celsius--A Short History of the Standard Reference Temperature for Industrial Dimensional Measurements
Series: Journal of Research (NIST JRES)
Published: 1/1/2007
Author: Theodore D Doiron
Abstract: While most dimensional metrologists know that the reference temperature for dimensional measurements is 20  C, very few know how or why that temperature was chosen.  Many people have thought it was, in some sense, arbitrary.  In actual ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823211

2. A Careful Consideration of the Calibration Concept
Series: Journal of Research (NIST JRES)
Published: 3/1/2001
Authors: Steven David Phillips, William Tyler Estler, Theodore D Doiron, K Eberhardt, M Levenson
Abstract: This paper is a detailed discussion of the technical aspects of the calibration process with emphasis on the definition of the measurand, the conditions under which the calibration results are valid, and the subsequent use of the calibration results ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823126

3. A Careful Consideration of the Calibration Concept
Published: 1/1/2001
Authors: Steven David Phillips, William Tyler Estler, Theodore D Doiron, K Eberhardt, M. Levenson
Abstract: This paper is a detailed discussion of the technical aspects of the calibration process with emphasis on the definition of the measurand, the conditions under which the calibration results are valid, and the subsequent use of the calibration results ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=824612

4. A High Accuracy Micrometer for Diameter Measurements of Cylindrical Standards
Published: 1/1/1994
Authors: John Richard Stoup, Theodore D Doiron
Abstract: NIST has developed a new instrument to measure cylindrical standards including thread wires and plain plug gages. The instrument uses a laser interferometer system which is coupled with an air bearing linear motion slide and precise contact geometry ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820717

5. Accuracy and Versatility of the NIST M48 Coordinate Measuring Machine
Published: 10/1/2001
Authors: John Richard Stoup, Theodore D Doiron
Abstract: The NIST Is continuing to develop the ability to perform accurate, traceable measurements on a wide range of artifacts using a very precise, error-mapped coordinate measuring machine (CMM). The NIST M48 CMM has promised accuracy and versatility for m ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822439

6. Applications of Profile Filtering in the Dimensional Metrology of Fuel Cell Plates
Published: 5/14/2013
Authors: Balasubramanian Muralikrishnan, Wei Ren, Eric S Stanfield, Dennis S Everett, Xiaoyu A Zheng, Theodore D Doiron
Abstract: We describe the application of several surface profile filters as an enabling tool in the dimensional measurements of an engineering artifact, namely, a fuel cell plate. We recently reported work on the development of a non-contact system for dimensi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913301

7. Case Against Optical Gauge Block Metrology
Published: 9/1/1998
Authors: Theodore D Doiron, Dennis S Everett, Bryon S. Faust, Eric S Stanfield, John Richard Stoup
Abstract: The current definition of length of a gage block is a very clever attempt to evade the systematic errors associated with the wringing layer thickness and optical phase corrections. In practice, there are very large systematic operator and surface eff ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820890

8. Deformation of Gauge Blocks
Published: 1/1/2002
Authors: Theodore D Doiron, Eric S Stanfield, Dennis S Everett
Abstract: When a force is exerted on any material, the material deforms.  Most of the time the effect is small and is neglected.  In the measurement of gauge blocks, where the uncertainty goal is stated in nanometers, the deformation is a very large ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823147

9. Dimensional Metrology of Bipolar Fuel Cell Plates Using Laser Spot Triangulation Probes
Published: 3/22/2011
Authors: Balasubramanian Muralikrishnan, Wei Ren, Dennis S Everett, Eric S Stanfield, Theodore D Doiron
Abstract: As in any engineering component, manufacturing a bipolar fuel cell plate for a polymer electrolyte membrane (PEM) hydrogen fuel cell power stack to within its stated design tolerances is critical in achieving the intended function. In a bipolar fuel ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907747

10. Dimensional Metrology of Millimeter- and Sub-millimeter-scale Components
Published: 10/1/2000
Authors: Theodore Vincent Vorburger, Jun-Feng Song, Joseph Fu, M Tundermann, Thomas B Renegar, Theodore D Doiron, N G Orji
Abstract: Decreasing sizes and tolerances of engineering components bring a demand for decreasing uncertainty in the dimensional measurements of these parts. Hence there is increasing need for measuring machines capable of performing dimensional and geometrica ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820999



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