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Conferences

Model-based engineering for the integration of manufacturing systems with advanced analytics

July 10, 2016

Author(s)

David Lechevalier, Anantha Narayanan Narayanan, Sudarsan Rachuri, Sebti Foufou, Yung-Tsun Lee

To employ data analytics effectively and efficiently on manufacturing systems, engineers and data scientists need to collaborate closely to bring their domain...

Estimation of waveform state levels and uncertainties using the histogram and shorth methods

July 10, 2016

Author(s)

Nicholas G. Paulter Jr., Mark Bieler

State level calculations are fundamental to extract any parameter of a time-domain waveform. Here we compare state level calculations using two different...

Direct comparison of a Pulse-driven Josephson Arbitrary Waveform Synthesizer and a Programmable Josephson Voltage Standard at 1 Volt

July 9, 2016

Author(s)

Alain Rufenacht, Nathan Flowers-Jacobs, Anna Fox, Charles J. Burroughs, Paul Dresselhaus, Samuel P. Benz

We have performed direct ac comparisons between two types of quantum voltage standards, a pulse- driven Josephson arbitrary waveform synthesizer and a...

Simultaneous Double Waveform Synthesis with a Single Programmable Josephson Voltage Standard

July 9, 2016

Author(s)

Alain Rufenacht, Anna Fox, Paul Dresselhaus, Charles J. Burroughs, Samuel P. Benz, Bryan C. Waltrip, Thomas L. Nelson

We have recently demonstrated new 2 V PJVS devices configured with two voltage outputs and two sets of least significant bits in order to simultaneously...

Quantum-Based Voltage Metrology with Superconducting Josephson Devices at NIST

July 9, 2016

Author(s)

Samuel P. Benz

Over the past three decades, the quantum behavior of Josephson junctions has been exploited to improve the accuracy of dc voltage measurements by five orders of...

Improved spectra aberration in the Johnson Noise Thermometry

July 9, 2016

Author(s)

Alessio Pollarolo, Horst Rogalla, Anna Fox, Kevin J. Coakley, Weston L. Tew, Samuel P. Benz

SPECTRAL ABERRATION HAS BEEN FOR A LONG TIME THE MAIN SOURCE OF UNCERTAINTY IN THE JOHNSON NOISE THERMOMETRY APPROACH TO MEASURING THE BOLTZMANN CONSTANT...

Josephson-Based Full Digital Bridge for High-Accuracy Impedance Comparisons

July 9, 2016

Author(s)

Frederic Overney, Nathan Flowers-Jacobs, Blaise Jeanneret, Alain Rufenacht, Anna Fox, Jason Underwood, Andrew D. Koffman, Samuel P. Benz

This paper describes a Josephson-based impedance bridge capable of comparing any types of impedance over a large bandwidth. The heart of the bridge is a dual AC...

10 Volt Automated Direct Comparison of Two Cryocooled Programmable Josephson Voltage Standards

July 9, 2016

Author(s)

Alain Rufenacht, Yi-hua D. Tang, Paul Dresselhaus, Charles J. Burroughs, Robert E. Schwall, Samuel P. Benz

We have performed direct dc comparisons between two cryocooled 10 V programmable Josephson voltage standards utilizing an automated synchronization scheme for...

International Comparison of Wr15 (50-75 GHz) Power Measurements among NIST

July 9, 2016

Author(s)

Xiaohai Cui, Yu S. Meng, Rolf Judaschke, Juergen Ruehaak, Thomas P. Crowley, Ronald A. Ginley

This paper reports preliminary measurement results of an informal international power comparison in WR15 (50 GHz to 75 GHz) waveguide among NIST, NIM, PTB and...

Laser Refractometer as a Transfer Standard of the Pascal

July 9, 2016

Author(s)

Patrick Egan, Jack A. Stone Jr., Jacob Edmond Ricker, Jay H. Hendricks

We have developed a new low pressure sensor which is based on the measurement of (nitrogen) gas refractivity inside a Fabry-Perot (FP) cavity. We compare...

Pros and Cons of Egress Drills

July 4, 2016

Author(s)

Steve Gwynne, Karen E. Boyce, Erica D. Kuligowski, Daniel Nilsson, Amanda Robbins, Ruggiero Lovreglio

This article explores how egress drills are currently employed, their impact, and the insights gained from them. By investigating their strengths and...

FIREBRAND IGNTION IN LARGE OUTDOOR FIRES: THE USE OF FULL-SCALE EXPERIMENTS TO GUIDE THE DEVELOPMENT OF LABORATORY STANDARD TEST METHODS

July 3, 2016

Author(s)

Samuel Manzello, Sayaka Suzuki

Wildfires that spread into communities, referred to as Wildland-Urban Interface (WUI) fires, have destroyed communities throughout the world. Large outdoor...

EXPERIMENTAL INVESTIGATION OF WOOD DECKING ASSEMBLIES ATTACKED BY FIREBRAND SHOWERS

July 3, 2016

Author(s)

Samuel Manzello, Sayaka Suzuki

Wildland-Urban Interface (WUI) fires have become a problem of great concern worldwide. Japan is located in one of the most earthquake prone areas of the world...

Implementing the ISO 15746 Standard for Chemical Process Optimization

July 3, 2016

Author(s)

Guodong Shao, Peter O. Denno, Albert T. Jones, Yan Lu

Integrating advanced process control solutions with optimization (APC-O) solutions, within any factory, enables more efficient production processes. Currently...

Fast Dynamic Programming for Elastic Registration of Curves

June 30, 2016

Author(s)

Javier Bernal, Gunay Dogan, Robert Hagwood

Curve registration problems in data analysis and com- puter vision can often be reduced to the problem of match- ing two functions defined on an interval...

Inspection of embedded internal features in additively manufactured metal parts using metrological x-ray computed tomography

June 30, 2016

Author(s)

Felix H. Kim, Herminso Villarraga-Gomez, Shawn P. Moylan

Advances in metal additive manufacturing (AM) have made it possible to build parts with complex geometry. Metal AM has a high potential to impact various...

Methodology for Increasing Image Feature Measurement Accuracy

June 30, 2016

Author(s)

Michael Paul Majurski, Joe Chalfoun, Steven Lund, Peter Bajcsy, Mary C. Brady

Motivation Image features are computed in cell biology to derive quantitative information regarding cell state, differentiation, biological activity, and cell...

Identifying uncertainty in Laser Powder Bed Fusion models

June 30, 2016

Author(s)

Felipe F. Lopez, Paul Witherell, Brandon Lane

A limitation frequently encountered in additive manufacturing (AM) models is a lack of indication about their precision and accuracy. Often overlooked...

Crystal Plasticity Analysis of Constitutive Behavior of 5754 Aluminum Sheet

June 30, 2016

Author(s)

Minh-Son Pham, Anthony D. Rollett, Adam Abel Creuziger, Mark Iadicola, Timothy J. Foecke

Crystal plasticity constitutive equations for the multi-axial stress-strain behavior of aluminum alloy 5754 sheets have been developed. A Taylor model, a self...

PRELIMINARY STUDY TOWARD SURFACE TEXTURE AS A PROCESS SIGNATURE IN LASER POWDER BED FUSION ADDITIVE MANUFACTURING

June 29, 2016

Author(s)

Jason Fox, Shawn P. Moylan, Brandon Lane

Additive manufacturing (AM) allows for highly complex designs that cannot be achieved through subtractive or formative manufacturing techniques. A limiting...

Gaps Analysis Of Integrating Product Design, Manufacturing, And Quality Data In The Supply Chain Using Model-Based Definition

June 28, 2016

Author(s)

Asa Trainer, Thomas D. Hedberg Jr., Allison Barnard Feeney, Kevin Fischer, Phil Rosche

Information technology advances such as big data, service-oriented architectures, and networking have triggered a digital revolution that holds promise of...

A Hybrid Human-Computer Approach to the Extraction of Scientific Facts from the Literature

June 28, 2016

Author(s)

Roselyne B. Tchoua, Kyle Chard, Debra Audus, Jian Qin, Juan J. de Pablo, Ian Foster

A wealth of valuable data is locked within the millions of research articles published each year. Reading and extracting pertinent information from those...

Promoting Model-Based Definition to Establish a Common Information Model

June 28, 2016

Author(s)

Shawn P. Ruemler, Kyle E. Zimmerman, Nathan W. Hartman, Thomas D. Hedberg Jr., Allison Barnard Feeney

The manufacturing industry is evolving and starting to use 3D models as the central knowledge artifact for product data and product definition, or what is known...

Powder Bed Layer Geometry

June 27, 2016

Author(s)

Michael L. McGlauflin, Shawn P. Moylan

This paper investigates the measurement of machine performance errors associated with the powder bed geometry of a commercially available laser additive...

Automating Asset Knowledge with MTConnect

June 27, 2016

Author(s)

John L. Michaloski, Frederick M. Proctor, Sid Venkatesh, Sidney Ly, Martin Manning

In order to maximize assets, manufacturers should use real-time knowledge garnered from ongoing and continuous collection and evaluation of factory-floor...

Variability of Sounder Measurements in Manufacturing Facilities

June 27, 2016

Author(s)

Jeanne Quimby, Alexandra Curtin, David R. Novotny, Chih-Ming Wang, Rick Candell

Uncertainties in the linear regression fit of Path Loss are derived from variability in position. These uncertainties are used to determine the required...

Residual Stresses in Flow Drill Screwdriving of Aluminium Alloy Sheets

June 27, 2016

Author(s)

Justin L. Milner, Thomas H. Gnaeupel-Herold, Jamie D. Skovron

With an increase in fuel economy standards and the need for reducing emissions set for the automotive sector, has increased the demand for lightweight vehicles...

The Current State of Sensing, Health Management, and Control for Small-to-Medium-Sized Manufacturers

June 26, 2016

Author(s)

Moneer Helu, Brian A. Weiss

The development of digital technologies for manufacturing has been challenged by the difficulty of navigating the breadth of new technologies available to...

Wide-Field InfraRed Survey Telescope (WFIRST) Slitless Spectrometer: Design, Prototype, and Results

June 26, 2016

Author(s)

Qian Gong, David Content, Margaret Z. Dominguez, Thomas Emmett, Ulf Griesmann, Jeffrey Kruk, Catherine Marx, Bert Pasquale, Thomas Wallace

The slitless spectrometer plays an important role in the WFIRST mission for the survey of emission-line galaxies. This will be an unprecedented very wide field...

Process improvements in the production of silicon immersion gratings

June 26, 2016

Author(s)

Cynthia Brooks, Benjamin Kidder, Michelle Grigas, Daniel Jaffe, Ulf Griesmann, Daniel Wilson, Richard Muller

We have explored a number of lithographic techniques and improvements to produce the resist lines that then define the grating groove edges of silicon immersion...

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