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The NIST Kolsky Bar Data Processing System



Eric P. Whitenton


A new dynamic testing apparatus has been built at the National Institute of Standards and Technology (NIST) to measure dynamic material properties for machining simulation and other applications. This apparatus-the NIST Pulse Heated Kolsky Bar - is based on the traditional Split Hopkinson Pressure Bar, or Kolsky Bar, design with an added unique feature of rapid electrical resistance heating of the sample. To quickly reduce and archive the strain gage records, as well as document all other aspects of the tests, software for data management and processing has been implemented. Called the Kolsky Bar Data PADS (Processing and Distribution System,) the software intereactively re-computes stress-strain and other curves as the user examines various assumptions. The data PADS also includes a database containing strain gage data, visible high speed videos, thermal camera videos, high speed pyrometer data, sensor data measuring the velocity of the projectile, as well as technical papers and associated information. Multiple users may use and add data to the system, allowing for sharing of data maintenance tasks. This paper shows important features of the program, data analysis procedures unique to the software, and examples of its use.
Conference Dates
June 7-9, 2005
Conference Location
Portland, OR
Conference Title
SEM Annual Conference & Exposition 2005


database management, interactive data processing, kolsky bar, rapid heating, split hopkinson pressure bar


Whitenton, E. (2005), The NIST Kolsky Bar Data Processing System, SEM Annual Conference & Exposition 2005, Portland, OR, [online], (Accessed April 24, 2024)
Created June 7, 2005, Updated February 19, 2017