Flow metrology & rheology

News and Updates

NIST Presents First Real-World Test of New Smokestack Emissions Sensor Designs

June 26, 2019

In collaboration with industry, researchers at the National Institute of Standards and Technology (NIST) have completed...

Assessing the Next-Generation Backing Materials for Body Armor Testing

March 28, 2019

A framework of rheological techniques was developed to evaluate a candidate ballistic witness material developed by the...

Helping the Microchip Industry Go (Very Low) with the Flow

August 22, 2018

A new study by scientists at the National Institute of Standards and Technology (NIST) has uncovered a source of error...

Neutrons by the Numbers

May 21, 2018

After years of research, scientists at the National Institute of Standards and Technology (NIST) have developed and...

Publications

Progress Towards a Gas-Flow Standard using Microwave and Acoustic Resonances

July 16, 2019

Author(s):

Jodie G. Pope, Keith A. Gillis, Michael R. Moldover, Eric Harman, James Mehl

We describe our progress in the development of a novel gas flow standard using the acoustic and microwave resonances of a 1.85 m3, nearly-spherical, steel...

Non Nulling Measurements of Flue Gas Flows in a Coal-Fired Power Plant Stack

June 28, 2019

Author(s):

Aaron N. Johnson, Iosif I. Shinder, Bernard J. Filla, Joey T. Boyd, Rodney A. Bryant, Michael R. Moldover

Exhaust flows from coal-fired stacks are determined by measuring the flue gas velocity at prescribed points in the stack cross section. During the last 30+...

NISTIR 7383, Selected Procedures for Volumetric Calibrations (2019 Ed)

May 14, 2019

Author(s):

Georgia L. Harris, Val R. Miller

This publication contains Good Measurement Procedures (GMP), Good Laboratory Procedures (GLP), and Standard Operating Procedures (SOP) for use in calibration...

Rheological Characterization of Next-Generation Ballistic Witness Materials for Body Armor Testing

March 14, 2019

Author(s):

Ran Tao, Kirk D. Rice, Aaron M. Forster, Randy A. Mrozek, Shawn T. Cole, Reygan M. Freeney, Anicet Djakeu Samen

Roma Plastilina No. 1 (RP1), a ballistic clay, is essential for establishing injury limits in standards-based ballistic resistance testing of body armor. It...

Projects & Programs

Precursor Material Qualification

The lack of repeatable process outcomes from additive manufacturing (AM) has been broadly acknowledged as an impediment to widespread implementation. While...

Material Qualification

The lack of repeatable process outcomes from additive manufacturing (AM) has been broadly acknowledged as an impediment to widespread implementation. While...

AM Machine and Process Qualification

Machines and processes used to produce critical components for defense, aerospace, and medical applications must first be formally qualified. While...