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Conferences

Calibration of channel mismatch in time-interleaved real-time digital oscilloscopes

May 22, 2015

Author(s)

Jeffrey A. Jargon, Paul D. Hale, Peter J. Jeavons, John B. Schlager, Andrew M. Dienstfrey, Joo-Gwang Lee, Chihyun Cho

A novel method is proposed for the calibration of channel mismatch in a time-interleaved real- time digital oscilloscope (RTDO). The method only requires a...

Physical Models for 2.4 mm and 3.5 mm Coaxial VNA Calibration Kits Developed within the NIST Microwave Uncertainty Framework

May 22, 2015

Author(s)

Jeffrey A. Jargon, Chihyun Cho, Dylan F. Williams, Paul D. Hale

We develop physical models of commercially available 2.4 mm and 3.5 mm coaxial calibration kits for vector network analyzers. These models support multiline...

Rectangular-Waveguide Impedance

May 22, 2015

Author(s)

Dylan F. Williams, Jeffrey A. Jargon, Uwe Arz, Paul D. Hale

We discuss the role of the wave impedance in temporal measurements in rectangular waveguide and present a simple rule-of-thumb for estimating the difference of...

Acoustic and Electrical Properties of Piezoelectric Materials for High-Temperature Sensing Applications

May 20, 2015

Author(s)

Ward L. Johnson

Sensor applications at high temperatures have been major factors motivating research, development, and commercialization of a number of innovative single...

Statistical comparisons for tensile properties of aramid and co-polymer aramid fibers as a function of loading rates

May 20, 2015

Author(s)

Jae Hyun Kim, Nathanael A. Heckert, Kai-Li Kang, Walter G. McDonough, Kirk D. Rice, Gale A. Holmes

High strength polymer fibers such as poly(p-phenylene terephalamide) (PPTA) are used for ballistic body armors. Additionally, a co-polymer aramid fiber...

Multi-scale measurement for tensile behaviors of glass fiber composites at high rate loading: Fiber fragmentation behaviors in epoxy resin

May 19, 2015

Author(s)

Jae Hyun Kim, Steven P. Mates, Nathanael A. Heckert, Walter G. McDonough, Gale A. Holmes

High strength and light weight composite materials used in various structural components of aviation and automotive applications deform under high rate loading...

DEVELOPMENT OF REDUCED-SCALE EXPERIMENTAL FACILITY TO STUDY FIREBRAND IGNTION

May 16, 2015

Author(s)

Samuel Manzello, Sayaka Suzuki

Wildfires that spread into communities, referred to as Wildland-Urban Interface (WUI) fires, have destroyed communities throughout the USA. The best way forward...

Enhancement of Premixed Methane-Air Flames by Halon 1301 Replacements

May 16, 2015

Author(s)

John L. Pagliaro, Gregory T. Linteris, Peter B. Sunderland

Apparent combustion enhancement by some halon replacement fire suppressants (proposed for use in aircraft cargo bays) has been observed in full-scale, constant...

BUILDING COMPONENT IGNTION FROM MULCH BEDS IGNITED BY FIREBRAND SHOWERS

May 16, 2015

Author(s)

Samuel Manzello, Sayaka Suzuki, Daisaku Nii

Wildfires that spread into communities, referred to as Wildland-Urban Interface (WUI) fires, have destroyed communities throughout the world. The 2007 Southern...

Spectral homogenization techniques for the hyperspectral image projector

May 15, 2015

Author(s)

Joseph P. Rice, Logan E. Hillberry

In an effort to improve technology for performance testing and calibration of multispectral and hyperspectral imagers, the National Institute of Standards and...

SI-Traceable Calibrations of Celestial Objects

May 14, 2015

Author(s)

Keith R. Lykke, Claire E. Cramer, John T. Woodward IV

Photometric calibration is currently the leading source of systematic uncertainty in supernova surveys that aim to determine the nature of dark energy. The bulk...

An Experimental Approach to A Definition of The Mesopic Adaptation Field

May 14, 2015

Author(s)

Tatsukiyo (. Uchida, Yoshihiro Ohno

The CIE 191 mesopic luminous efficiency function depends on the luminance of visual adaptation field, therefore, it must be measured to implement the mesopic...

Prediction of Sealant Modulus Change due to Outdoor Weathering

May 13, 2015

Author(s)

Christopher C. White, Kar T. Tan, Donald L. Hunston, Adam L. Pintar, James J. Filliben

An empirically-based model has been created to predict the change in modulus for a sealant exposed to outdoor weathering. The underlying high precision data...

On-Chip Silicon Photonic Thermometers: from Waveguide Bragg Grating to Ring Resonators sensors

May 13, 2015

Author(s)

Nikolai Klimov, Thomas P. Purdy, Zeeshan Ahmed

Fundamental limitations of resistance thermometry, as well as the desire to reduce sensor ownership cost has led to considerable interest in the development of...

Navigation Performance Evaluation for Automated Guided Vehicles

May 12, 2015

Author(s)

Roger V. Bostelman, Tsai Hong Hong, Geraldine S. Cheok

Automatic guided vehicles (AGVs), an industrial form of mobile robot, typically navigate using a central computer commanding AGV movement on predefined paths...

New night vision goggle gain definition

May 12, 2015

Author(s)

Vyacheslav B. Podobedov, George P. Eppeldauer, Thomas C. Larason

A new definition is proposed for the calibration of Night Vision Goggle (NVG) gains. This definition is based on the measurement of radiometric input and output...

Electro-thermal Simulation of 1200 V 4H-SiC MOSFET Short-Circuit SOA

May 10, 2015

Author(s)

Tam H. Duong, Jose M. Ortiz, David W. Berning, Allen R. Hefner Jr., Sei-Hyung Ryu, John W. Palmour

The purpose of this paper is to introduce a dynamic electro-thermal simulation and analysis approach for device design and short-circuit safe-operating-area...

Mid-Infrared Optical Frequency Combs based on Difference Frequency Generation for Dual-Comb Spectroscopy

May 10, 2015

Author(s)

Flavio Caldas da Cruz, Daniel I. Maser, Todd Johnson, Gabriel G. Ycas, Andrew M. Klose, Fabrizio R. Giorgetta, Ian R. Coddington, Nathan R. Newbury, Scott A. Diddams

Mid-infrared femtosecond optical frequency combs at 2.8 - 3.5 υm were produced by difference frequency generation of the spectral components of a near-infrared...

A high-resolution single-photon camera based on superconducting single photon detector arrays and compressive sensing

May 4, 2015

Author(s)

Thomas Gerrits, Michael S. Allman, Daniel Lum, Varun B. Verma, John Howell, Richard P. Mirin, Sae Woo Nam

We present our results on utilizing a superconducting nanowire single photon detector array and compressive imaging techniques to perform single photon imaging...

Free Space Microwave Non Destructive Characterization of Composite Materials

May 4, 2015

Author(s)

Jan Obrzut, Ahmed M. Hassan, Edward J. Garboczi

We present a free-space microwave experimental measurement system for the non-destructive testing of composite materials. The system operates in the Q-...

SHREC'15: Range Scans based 3D Shape Retrieval

May 3, 2015

Author(s)

Afzal A. Godil

The objective of the SHREC'15 Range Scans based 3D Shape Retrieval track is to evaluate algorithms that match range scans of real objects to complete 3D mesh...

Service Life Modeling of Reinforced High Volume Fly ash (HVFA) Concrete Structures Containing Cracks

May 1, 2015

Author(s)

Scott Z. Jones, Dale P. Bentz, Kenneth A. Snyder, Nicos Martys, Daniel S. Hussey, David L. Jacobson

Chloride ions, resulting from the application of de-icing salts travel through the concrete matrix by diffusion in a connected pore network. Cracks in concrete...

A Compact Millimeter-wave Multisine Generator for Calibrating Broadband Vector Receivers

April 30, 2015

Author(s)

Paul D. Hale, Kate Remley, Dylan Williams, Jeffrey Jargon, Chih-Ming Wang

We propose a compact and low cost waveform source that can be used to calibrate the magnitude and phase response of vector receivers over a bandwidth as large...

Progress Toward Standardized Additive Manufacturing Test Artifacts

April 29, 2015

Author(s)

Shawn P. Moylan

Users and buyers of additive manufacturing (AM) systems need to know system performance characteristics to make important, basic decisions such as whether or...

Post-process machining of additive manufactured stainless steel

April 29, 2015

Author(s)

Brandon M. Lane, Shawn P. Moylan, Eric P. Whitenton

Due to the poorer surface finish and geometric accuracy of additive manufactured (AM) parts compared to machined parts, it is inevitable that parts fabricated...

Certified KLST Miniaturized Charpy Specimens for the Indirect Verification of Small-Scale Impact Machines

April 28, 2015

Author(s)

Enrico Lucon, Christopher N. McCowan, Raymond L. Santoyo, Jolene D. Splett

Small specimen test techniques are becoming ever more popular as the need increases to characterize mechanical properties by use of the smallest possible amount...

Fast Minimization of Region-based Active Contours using the Shape Hessian of the Energy

April 28, 2015

Author(s)

Gunay Dogan

We propose a novel shape optimization algorithm for region-based active contour models. Region-based active contours are preferred for many segmentation...

Performance Measurement of Mobile Manipulators

April 24, 2015

Author(s)

Roger V. Bostelman, Tsai Hong Hong, Jeremy A. Marvel

This paper describes a concept for measuring the reproducible performance of mobile manipulators to be used for assembly or other similar tasks. An AGV with an...

New Steel Gravity Connection Details for Enhanced Integrity

April 23, 2015

Author(s)

Jonathan M. Weigand, Jeffrey W. Berman

Recent large-scale tests have found that Steel Gravity Framing Systems (SGFSs) with conventional connections were inadequate to support the integrity gravity...

Analysis of a Half-Scale Composite Floor System Test under Column Loss Scenarios

April 23, 2015

Author(s)

Joseph A. Main, Jonathan M. Weigand, Eric S. Johnson, Tim Francicso, Judy Liu, Jeffrey W. Berman, Larry A. Fahnestock

This paper describes modeling and analysis of a half-scale steel gravity frame system with composite concrete slab on steel deck that was constructed and tested...

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