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Conferences

Numerical study of the initial particle parking structure of cement/geopolymer pastes and dissolution of amorphous silica using real-shape particles

December 12, 2017

Author(s)

Edward Garboczi, Yibing Zuo, Zhiwei Qian, Guang Ye

Many particle-based numerical models have been used to simulate the hydration process of cementitious materials. But most of these models employ regular shape...

Automatic Localization of Casting Defects with Convolutional Neural Networks

December 11, 2017

Author(s)

Ronay Ak, Max Ferguson, Yung-Tsun T. Lee, Kincho H. Law

Automatic localization of defects in metal castings is a challenging task, owing to the rare occurrence and variation in appearance of defects. Convolutional...

A Data-Driven Approach for Improving Sustainability Assessment in Advanced Manufacturing

December 11, 2017

Author(s)

Yunpeng Li, Heng Zhang, Utpal Roy, Yung-Tsun Lee

Sustainability assessment (SA) has been one of the prime contributors to advanced manufacturing analysis, and it traditionally involves life cycle assessment...

Issues in Synthetic Data Generation for Advanced Manufacturing

December 11, 2017

Author(s)

Donald E. Libes, David Lechevalier, Sanjay Jain

Research into advanced manufacturing requires data for analysis. There is limited access to real-world data and a need for more data of varied types and larger...

Estimation of On-line Tool Wear in Turning Processes Using Recurrence Quantification Analysis (RQA)

December 11, 2017

Author(s)

Sagar Kamarthi, Yung-Tsun Lee, Srinivasan Radhakrishnan

This paper exploits the underlying dynamics of a turning process captured in force measurements for online flank wear estimation. We transform the sensor...

Incorporating Abstraction Methods into System-Analysis Integration Methodology for Discrete Event Logistics Systems

December 6, 2017

Author(s)

Timothy A. Sprock, Conrad E. Bock

Analysis models, such as discrete event simulation models, are used to support design and operation of discrete event logistics systems (DELS). The time and...

SDR-Based Experiments for LTE-LAA Based Coexistence Systems with Improved Design

December 4, 2017

Author(s)

Yao Ma, Ryan T. Jacobs, Daniel G. Kuester, Jason B. Coder, William F. Young

To enhance spectrum efficiency in next generation heterogeneous wireless systems, it is important to improve shared spectrum usage between unlicensed long-term...

Three Antenna Ranges Based on Articualted Robotic Arms at the National Institute of Standards and TechnologyDescribing Usability for Over-the-Air and Standard Near-Field Measuremnts

December 3, 2017

Author(s)

David R. Novotny, Josh Gordon, Michael S. Allman, Jeffrey R. Guerrieri, Alexandra Curtin

NIST has developed an antenna range that uses coordinated industrial robotic systems for measuring milli-meter wave (mmWave) antenna patterns and gain. The...

A Layered and Aggregated Queuing Network Simulator for Detection of Abnormalities

December 3, 2017

Author(s)

Junfei Xie, Chenyan He, Yan Wan, Kevin L. Mills, Christopher E. Dabrowski

Driven by the needs to monitor, detect, and prevent catastrophic failures for complex information systems in real-time, we develop in this paper a discrete-time...

Phototransferred thermoluminescence (PTTL) dosimetry using Gorilla® glass from mobile phones

November 30, 2017

Author(s)

Ronaldo Minniti, S Sholom, S W. Mckeever

Samples of Gorilla® glass (Corning®) from several touchscreen mobile phones were prepared and analyzed using phototransferred thermoluminescence (PTTL) in an...

Quantifying Variance Components for Repeated Scattering-Parameter Measurements

November 30, 2017

Author(s)

Amanda Koepke, Jeffrey Jargon

We quantify random uncertainties for scattering-parameters repeatedly measured with a vector network analyzer (VNA), focusing on variations due to multiple...

Sensors for Safe, Collaborative Robots in Smart Manufacturing

November 30, 2017

Author(s)

Jeremy Marvel

The U.S. National Institute of Standards and Technology (NIST) is developing performance metrics for collaborative robotic systems for smart manufacturing...

Composition analysis of CT lung density reference (SRM 2088) using neutron induced Prompt Gamma Activation Analysis (PGAA)

November 30, 2017

Author(s)

Heather H. Chen-Mayer, Danyal J. Turkoglu, Rick L. Paul, Zachary H. Levine

Characterization of Transmission Lines with Nonlinear Dielectric Materials

November 28, 2017

Author(s)

Aaron M. Hagerstrom, Christian J. Long, Nathan D. Orloff, James C. Booth, Eric J. Marksz

Nonlinear transmission lines are interesting for two broad reasons: first, they have several direct device applications (i.e. harmonic generation, and phase...

Rydberg Atom Electric-Field Metrology

November 28, 2017

Author(s)

Joshua A. Gordon, Christopher L. Holloway, Matthew T. Simons

We present a technique which shows great promise for realizing an atomic standard measurement of RF fields that is intrinsically calibrated, directly linked to...

Establishing Traceability for SOLT Calibration Kits*

November 28, 2017

Author(s)

Ronald A. Ginley

Establishing traceability for a measurement is very important so that the results of the measurement can be used in a common framework for comparisons and...

Kicking the Tires of the NIST Microwave Uncertainty Framework Part 2*

November 27, 2017

Author(s)

Ronald A. Ginley

Traceability of a measurement requires two parts. An unbroken chain of measurements and uncertainties for each link of the chain. The NIST Microwave Uncertainty...

Towards a Hybrid Human-Computer Scientific Information Extraction Pipeline

November 27, 2017

Author(s)

Roselyne B. Tchoua, Kyle Chard, Debra Audus, Logan T. Ward, Lequieu Joshua, Juan J. de Pablo, Ian Foster

The emerging field of materials informatics has the potential to greatly reduce time-to-market and development costs for new materials. The success of such...

Observation of Triplet Level Crossing in Single Crystal Organic Transistors Using Magnetoconductance

November 26, 2017

Author(s)

Emily G. Bittle, Hyuk-Jae Jang, Qin Zhang, Curt A. Richter, David J. Gundlach

Organic semiconductors provide a unique set of properties that provide for the manufacture of large and flexible LED screens and photovoltaic arrays. In order...

3.5 GHz Waveform Generation for Testing and Development of ESC Detectors

November 17, 2017

Author(s)

Raied M. Caromi, John Mink, Michael R. Souryal

Environmental Sensing Capability (ESC) sensors will be used in the 3.5 GHz Citizens Broadband Radio Service (CBRS) to detect and report the presence of federal...

Modeling the Internet of Things (& People): A Foundational Approach

November 16, 2017

Author(s)

Spencer J. Breiner, Eswaran Subrahmanian, Ram D. Sriram

This talk provides an overview of recent NIST work in the Internet of Things (IoT) domain in the Information Technology Laboratory. We begin with some examples...

Instrumented impact testing of miniaturized Charpy specimens of AM Ti 6Al 4V

November 16, 2017

Author(s)

Enrico Lucon, Nikolas W. Hrabe

An investigation on the impact toughness properties of wrought and additively-manufactured (AM) Ti 6Al 4V was conducted at NIST Boulder, by means of...

VISION EXPERIMENT ON CHROMA SATURATION PREFERENCE IN DIFFERENT HUES

November 15, 2017

Author(s)

Yoshihiro Ohno, Youngshin Kwak, Semin Oh

Increase of chroma is known to be a major factor for color quality preference in lighting, and gamut area measures are often used to evaluate preference aspects...

GLOBAL INTERLABORATORY COMPARISON OF GONIOPHOTOMETER MEASUREMENTS USING LIGHT EMITTING DIODE ARTEFACTS

November 15, 2017

Author(s)

Yoshihiro Ohno

The International Energy Agencys (IEA) Energy Efficient End-use Equipment (4E) Solid-State Lighting (SSL) Annex is conducting a global interlaboratory...

VISION EXPERIMENT ON PERCEPTION OF CORRELATED COLOR TEMPERATURE

November 14, 2017

Author(s)

Yoshi Ohno, Hyeyoung Ha, Youngshin Kwak

The correlated color temperature (CCT) is defined by the closest point on the Planckian locus from a light source on the (now obsolete) CIE 1960 (u, v) diagram...

PRELIMINARY STUDY ON SPECTRAL CHARACTERISTICS FOR IDENTIFICATION OF SKIN COLOR UNDER CIRCULATORY DYSFUNCTION USING ARTIFICIAL SKIN SAMPLES

November 14, 2017

Author(s)

Yoshi Ohno, Yuki Akizuki

To assist development of appropriate light sources to diagnose circulatory dysfunction conditions effectively based on the color appearance of patient's skin...

Investigation on Firebrand Generation from Reduced-scale Mock-ups

November 12, 2017

Author(s)

Samuel Manzello, Sayaka Suzuki

Firebrands generated from structures are known to be a source of rapid flame spread within communities in large outdoor fires, such as wildland-urban (WUI)...

Experiments to Quantify Firebrand Production from Roofing Assembly Combustion

November 12, 2017

Author(s)

Samuel Manzello, Sayaka Suzuki, Tomohiro Naruse

Large outdoor fires present a risk to the built environment. One example often in the international media reports are wildfires that spread into communities...

Smart Manufacturing and The Promotion of Artificially-Intelligent Human-Robot Collaborations in Small- and Medium-sized Enterprises

November 11, 2017

Author(s)

Megan Zimmerman, Jeremy Marvel

The U.S. National Institute of Standards and Technology (NIST) is developing new metrology toward the evaluation and assurance of collaborative robot...

Convexity and Optimality Conditions for Constrained Least-Squares Fitting of Planes and Parallel Planes to Establish Datums

November 9, 2017

Author(s)

Craig M. Shakarji, Vijay Srinivasan

This paper addresses some important theoretical issues for constrained least-squares fitting of planes and parallel planes to a set of input points. In...

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