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Justin Whiting, Edward Garboczi, Vipin Tondare, John Henry J. Scott, Alkan Donmez, Shawn P. Moylan
The particle size distribution (PSD) and particlemorphology ofmetal powders undoubtedly affects the quality of parts produced by additivemanufacturing (AM). It is, therefore, crucial to accurately knowthe PSD and morphology of these powders. There exist
New experimental data for the thermal conductivity of 1,1,1,2,2,3,3-heptafluoro-3-methoxypropane (RE-347mcc, HFE-7000) are reported for vapor, liquid, and supercritical states. These new experimental data were obtained with transient hot-wire apparatus
This article discusses the background and motivation of work conducted at NIST to advance first-generation performance-based design procedures in ASCE 41.
The certification of a polyethylene standard reference material, SRM 2887, is described. The Mw of SRM 2887 by light scattering was determined to be 196.4x10+3 g/mol with a sample standard deviation of 6.7 x10+3 g/mol. A combined expanded uncertainty for
Bryan Bosworth, Nick Jungwirth, Kassi Smith, Jerome Cheron, Franklyn Quinlan, Ari Feldman, Dylan Williams, Nate Orloff, Chris Long
Integrated circuits are building blocks in millimeter-wave handsets and base stations, requiring nonlinear characterization to optimize performance and energy efficiency. Today's sources use digital-to-analog converters to synthesize arbitrary electrical
Jacob Gatlin, Sofia Belikovetsky, Yuval Elovici, Anthony Skjellum, Joshua Lubell, Paul Witherell, Mark Yampolskiy
Outsourced Additive Manufacturing (AM) exposes sensitive design data to external malicious actors. Even with end-to-end encryption between the design owner and 3D-printer, side-channel attacks can be used to bypass cyber-security measures and obtain the
Marion Toussaint, Sylvere Krima, Allison Barnard Feeney, HERVE PANETTO
The recent digitization of manufacturing, also referred to as the fourth industrial revolution (or Industry 4.0), heavily relies on information standards for the exchange and integration of digital data across manufacturers and their partners. Standards
Joshua B. Martin, John Lu, Winnie Wong-Ng, Sergiy Krylyuk, Dezhi Wang, Zhifeng Ren
We report the development of a high-temperature (295 K to 900 K) Seebeck coefficient Standard Reference Material (SRM) to enable instrument validation and interlaboratory data comparison that support the research, development, and production of materials
Samuel Low, Jun-Feng Song, Alessandro Germak, Andy Knott, Renato Reis Machado
This paper describes the process used by the Consultative Committee for Mass and Related Quantities - Working Group on Hardness (CCM-WGH) of the International Committee of Weights and Measures (CIPM) to develop international definitions of the conventional
Marko Mebelli, Danai Velliadou, Marc Assael, Konstantinos D. Antoniadis, Marcia L. Huber
We present a new wide-ranging correlation for the thermal of ethane-1,2-diol (ethylene glycol) based on critically evaluated experimental data. The correlation is designed to be used with an existing equation of state, and it is valid from the triple point
Teodor Vernica, Robert R. Lipman, William Z. Bernstein
Augmented reality (AR) technologies present immense potential for the design and manufacturing communities. However, coordinating traditional engineering data representations into AR systems without loss of context and information remains a challenge. A
Dianne L. Poster, C Cameron Miller, Richard Martinello, Norman Horn, Michael T. Postek, Troy Cowan, Yaw S. Obeng, John J. Kasianowicz
The National Institute of Standards and Technology (NIST) hosted an international workshop on ultraviolet-C (UV-C) disinfection technologies on January 14 – 15, 2020 in Gaithersburg, Maryland in collaboration with the International Ultraviolet Association
Brian Hoskins, Mitchell Fream, Matthew Daniels, Jonathan Goodwill, Advait Madhavan, Jabez J. McClelland, Osama Yousuf, Gina C. Adam, Wen Ma, Muqing Liu, Rasmus Madsen, Martin Lueker-Boden
Building prototypes of heterogeneous hardware systems based on emerging electronic, magnetic, and photonic devices is an increasingly important area of research. On the face of it, the novel implementation of these systems, especially for online learning
John D. Wright, Gina Kline, Kevin John, Brian Novitsky, Jason Bellavance, Kevin SHufelt, Bradley Nease, Miles Owen, Joseph Allen, Casey Rombouts, William Gause, John Cuccio
A comparison of seven gas flow calibration laboratories piloted by NIST used four laminar flow meters as the transfer standards for nine nitrogen gas flows ranging from 1 sccm to 10 slm. The comparison reference value was calculated from the uncertainty
Bradley Moore, John Matyjas, Raymond Tierney, Jesse Angle, Jeannine Abiva, Jeff Hanes, David Dobosh, John Avera
NIST Handbook 150-872 presents the technical requirements and guidance for the accreditation of laboratories under the National Voluntary Laboratory Accreditation Program (NVLAP) Federal Warfare System(s) (FWS) program. It is intended for information and
Iosif Isaakovich Shinder, Michael R. Moldover, James Filla, Aaron Johnson, Vladimir B. Khromchenko
NIST calibrates anemometers as a function of airspeed vector and turbulence intensity (Tu). The vector capability (sometimes called '3D') is particularly important for calibrating multi-hole differential-pressure probes that are often used to quantify
Aaron M. Hanke, Teodor Vernica, William Z. Bernstein
Interoperability across emerging visualization modalities, including augmented reality (AR) and virtual reality (VR), remains a challenge with respect to industrial applications. One critical issue relates to the lack of standard approaches for
The ASTM Interlaboratory Study (ILS) #1547 (Determining T0,X at Elevated Loading Rates) was launched in 2019 under the leadership of MPA Stuttgart (Germany). The NIST contribution consisted in 80 low-temperature fracture toughness tests at elevated loading
Barbara S. Paugh, Lajos Baranyi, Andre Roy, Hua-Jun He, Lindsay Harris, Kenneth Cole, Caroline Raimund, Patricia S. Langan, Moria Artlip, Srikanta Jana, Rimas J. Orentas, Sheng Lin-Gibson, Winfried Krueger, Boro Dropuli?
Lentiviral vectors (LV) have emerged as a robust technology for therapeutic gene delivery into human cells as advanced medicinal products. As these products are increasingly commercialized, there are concomitant demands for their characterization to ensure
NIST Handbook 150-1, NVLAP Energy Efficient Lighting Products, presents the technical requirements and guidance for the accreditation of laboratories under the NVLAP Energy Efficient Lighting Products LAP.
Maria Dillard, Cath Brooks, Helen Fisher, Hans Pietersen, Alwin Nijhuis, Anita van Breda, Susan Durden
Engagement is an important and necessary part of all planning and decision-making for any infrastructure project. Engagement is included at each step of the natural and nature-based features (NNBF) framework (steps detailed in Chapter 2) because we assume
Eite Tiesinga, Peter Mohr, David B. Newell, Barry Taylor
We report the 2018 self-consistent values of constants and conversion factors of physics and chemistry recommended by the Committee on Data of the Interna- tional Science Council (CODATA). The recommended values can also be found at physics.nist.gov
Aaron Goldfain, Christopher Yung, Kimberly Briggman, Jeeseong C. Hwang
The technique of phase contrast imaging, combined with tomographic reconstructions, can rapidly measure ultrasonic fields propagating in water, including ultrasonic fields with complex wavefront shapes, which are difficult to characterize with standard