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Displaying 1 - 4 of 4

Stress Analysis of Conical Contact Joints in the NIST 4.45 MN Deadweight Machine

May 10, 2016
Author(s)
Nicholas A. Vlajic, Akobuije D. Chijioke, Ricky L. Seifarth
Structural analysis of conical contact joints in the NIST 4.45 MN Dead Weight Machine using finite element analysis is presented in this paper. This analysis was undertaken due to the observation of surface damage in these joints. Parametric studies are

NIST 1-kilonewton sine force calibration system

January 22, 2014
Author(s)
Akobuije D. Chijioke, Ricky L. Seifarth, Zeina J. Kubarych
Many force-measurement applications are of a dynamic nature, and in recent decades there has been much progress in demonstrating and developing dynamic calibration systems for force transducers. The National Institute of Standards and Technology (NIST), U

Basic Procedures in Force Calibration at NIST

July 29, 2001
Author(s)
Ricky L. Seifarth, Samuel L. Ho
Force calibrations obtainable at the National Institute of Standards and Technology (NIST) continue to focus on extracting the maximum performance from the primary force standard deadweight machines, the ratiometric electrical readout systems and the

Force Measurement Services at NIST: Equipment, Procedures, and Uncertainty

July 17, 1997
Author(s)
Thomas W. Bartel, Ricky L. Seifarth, Simone L. Yaniv
The facilities, instrumentation, and procedures currently used at the National Institute of Standards and Technology (NIST) for force measurement services are described. The uncertainty in the forces realized by the NIST primary force standard deadweight