Conferences

3D BUILD MELT POOL PREDICTIVE MODELING FOR POWDER BED FUSION ADDITIVE MANUFACTURING

August 16, 2020

Author(s)

Zhuo Yang, Yan Lu, Ho Yeung, Sundar Krishnamurty

Melt pool size is a critical intermediate measure that reflects the outcome of a laser powder bed fusion process setting. Reliable melt pool predictions prior...

MEASURED DATA ALIGNMENTS FOR MONITORING METAL ADDITIVE MANUFACTURING PROCESSES USING LASER POWDER BED FUSION METHODS

August 16, 2020

Author(s)

Shaw C. Feng, Yan Lu, Albert W. Jones

The number and types of measurement devices used for monitoring and controlling laser powder bed fusion (LPBF) processes and inspecting the resulting AM metal...

Standardizing environmental performance evaluation of manufacturing systems through ISO 20140

August 6, 2020

Author(s)

Hitoshi Komoto, William Z. Bernstein, Soonjo Kwon, Fumihiko Kimura

Standards play a critical role in the realization of more sustainable practices in manufacturing systems. This is especially critical considering the trends in...

An automated workflow for integrating sustainability assessment into parametric part design through standard reference models

August 6, 2020

Author(s)

William Z. Bernstein, Melissa Tensa, Maxwell Praniewicz, Soonjo Kwon, Deverajan Ramanujan

Integrating environmental sustainability assessment into parametric design represents an important opportunity for enabling sustainable product design. However...

CAgen: A fast combinatorial test generation tool with support for constraints and higher-index arrays

August 4, 2020

Author(s)

Raghu N. Kacker, David R. Kuhn

In recent years, combinatorial testing methods have been successfully applied to test systems with a large number of input parameters. Generating combinatorial...

Over-the-Air Testing of Cellular Large-Form-Factor Internet-of-Things Devices in Reverberation Chambers

August 4, 2020

Author(s)

Catherine A. Remley, Clive Bax, Edwin Mendivil, Michael Foegelle, John Kvarnstrand, Derek Skousen, David S?nchez-Hern?ndez, Miguel Garcia-Fernandez, Lorien Chang, Elvis Yen, Johnny Gutierrez, Justin Harbour

We demonstrate the applicability of the reverberation chamber for over-the-air testing of power- based metrics for cellular-enabled wireless internet-of-things...

A Document-based View of the Risk Management Framework

August 3, 2020

Author(s)

Joshua Lubell

Cybersecurity professionals know the Risk Management Framework as a rigorous yet flexible process for managing security risk. But the RMF lacks a document focus...

Aggregating Atomic Clocks for Time-Stamping

August 3, 2020

Author(s)

Temur Saidkhodjaev, Jeff Voas, D. Richard Kuhn, Joanna DeFranco, Phil Laplante

A timestamp is a critical component in many applications, such as proof of transaction ordering or analyzing algorithm performance. This paper reports on a...

FIB-SEM tomography and its application towards understanding aerosol optical properties of atmospheric dust particles

July 30, 2020

Author(s)

Diana Ortiz-Montalvo, Robert D. Willis, Joseph M. Conny

Atmospheric dust particles have complex morphologies as observed in scanning electron microscopy (SEM) images. Yet, despite their non-spherical shape and the...

Operando Scanning Electron and Microwave Microscopies in Plasmas: A Comparative Analysis

July 30, 2020

Author(s)

Andrei A. Kolmakov, Alexander Tselev

There exists a great need for an operando nanoscale characterization of evolution of surface composition and morphology during plasma-assisted processing. This...

Correcting Systematic Energy Deficits in the Laser-Pulsed Atom Probe Mass Spectrum of SiO2

July 30, 2020

Author(s)

Benjamin W. Caplins, Paul T. Blanchard, Ann C. Chiaramonti Debay, David R. Diercks, Luis Miaja Avila, Norman A. Sanford

Effect of Precrack Configuration and Texture Variation on the Elastic-Plastic Fracture Toughness of Additively Manufactured Ti-6Al-4V parts

July 28, 2020

Author(s)

Enrico Lucon, Jake Benzing, Nikolas Hrabe

A comparison between fatigue precracked and sharp-notched Charpy-type fracture toughness specimens will be presented for characterizing the elastic-plastic...

Systems security assurance as (micro) publishing: Declarative markup for systems description and assessment

July 27, 2020

Author(s)

Wendell A. Piez

Markup technologies are very general purpose, as reflects their generality of conception. They become interesting as well as useful as they are applied to...

Working Fluid Screening for Ocean Thermal Energy Conversion (OTEC) Applications

July 27, 2020

Author(s)

Ian H. Bell

Ocean Thermal Energy Conversion (OTEC) is among the small number of renewable energy production systems that can provide base load capacity. Ammonia has long...

Deterministic Intra-Vehicle Communications: Timing and Synchronization

July 26, 2020

Author(s)

Hamid Gharavi

As we power through to the future, in-vehicle communications' reliance on speed is becoming a challenging predicament. This is mainly due to the ever-increasing...

Structure Vulnerability to Firebrands from Fences and Mulch

July 23, 2020

Author(s)

Kathryn M. Butler, Erik L. Johnsson, Wei Tang

Fences and mulch contribute to the spread of WUI fires. They act as both ignition targets and as sources that may themselves ignite nearby objects through...

Smart Home Security and Privacy Mitigations: Consumer Perceptions, Practices, and Challenges

July 23, 2020

Author(s)

Julie M. Haney, Susanne M. Furman, Yasemin Acar

As smart home technology is becoming more pervasive, smart home devices are increasingly being used by non-technical users who may have little understanding of...

The UCEF Approach to Tool Integration for HLA Co-Simulations

July 15, 2020

Author(s)

Thomas P. Roth, Christopher W. Lemieux, Martin J. Burns

Cyber-Physical Systems (CPS) are complex systems that require expertise from multiple domains in their design, implementation, and validation. One cost...

Effect of Amplitude Mismatch on Entanglement Visibility in Photon-Pair Sources

July 14, 2020

Author(s)

Paulina S. Kuo

Entangled photons produced by parametric down-conversion effectively have two down-conversion paths. Ideally, amplitudes of the two paths are matched.We show...

A Suite of Metrics for Calculating the Most Significant Security Relevant Software Flaw Types

July 13, 2020

Author(s)

Peter M. Mell, Assane Gueye

The Common Weakness Enumeration (CWE) is a prominent list of software weakness types. This list is used by vulnerability databases to describe the underlying...

Microresonator enhanced, waveguide coupled emission from silicon defect centers for superconducting optoelectronic networks

July 10, 2020

Author(s)

Alexander N. Tait, Sonia M. Buckley, Jeffrey M. Shainline, Adam N. McCaughan, Jeffrey T. Chiles, Sae Woo Nam, Richard P. Mirin

Superconducting optoelectronic networks could achieve scales unmatched in hardware-based neuromorphic computing. After summarizing recent progress in this area...

Over-The-Air Calibration of a Dual-Beam Dual-Polarized 28-GHz Phased-Array Channel Sounder

July 9, 2020

Author(s)

Sung Yun Jun, Derek Caudill, Jelena Senic, Camillo Gentile, Jack Chuang, Nada T. Golmie

This paper describes an over-the-air calibration procedure for the impulse response of a 28-GHz phased-array antenna channel sounder. The silicon-germanium...

Penetration Loss at 60 GHz for Indoor-to-Indoor and Outdoor-to-Indoor Mobile Scenarios

July 8, 2020

Author(s)

Sung Yun Jun, Derek Caudill, Jack Chuang, Peter B. Papazian, Anuraag Bodi, Camillo Gentile, Jelena Senic, Nada T. Golmie

This paper investigates the penetration loss of an office building in indoor-to-indoor and outdoor-to-indoor mobile scenarios. The measurements were collected...

Online Testbed for Evaluating Vulnerability of Deep Learning Based Power Grid Load Forecasters

July 7, 2020

Author(s)

Himanshu Neema, Peter Volgyesi, Xenofon Koutsoukos, Thomas Roth, Cuong Nguyen

Modern electric grids that integrate smart grid technologies require different approaches to grid operations. There has been a shift towards increased reliance...

Record Fast Polarization Switching Observed in Ferroelectric Hafnium Oxide Crossbar Arrays

July 2, 2020

Author(s)

Pragya R. Shrestha, xiao Lyu, Mengwei Si, Jason P. Campbell, Kin P. Cheung, Peide Ye

The polarization switching speed of ferroelectric (FE) hafnium zirconium oxide (HZO) is studied with the device size down to sub-μm in lateral dimension...

DNA mixture interpretation principles: insights from the NIST scientific foundation review

July 1, 2020

Author(s)

John Butler, Hariharan Iyer, Richard Press, Melissa Taylor, Peter Vallone, Sheila Willis

DNA mixture interpretation has become more challenging in recent years due to several factors including submission of more touch evidence samples to aid...

Development and Validation of a Simulation Testbed for the Intelligent Building Agents Laboratory (IBAL) using TRNSYS

July 1, 2020

Author(s)

Amanda Pertzborn, Ojas Pradhan, Jin Wen, Liang Zhang

This paper documents the development and validation process of a dynamic primary cooling and thermal storage system simulation testbed. The system simulation...

Memory update characteristics of carbon nanotube memristors (NRAM) under circuitry-relevant operation conditions

June 30, 2020

Author(s)

Dmitry Veksler, gennadi bersuker, A W. Bushmaker, Maribeth Mason, Pragya Shrestha, Kin P. Cheung, Jason Campbell, T Rueckes, L Clevlend, H Luan, D C. Gilmer

Carbon nanotubes (CNT) resistance-change memory devices were assessed for neuromorphic applications under high frequency use conditions by employing the ultra...

Anomalous accelerated negative-bias- instability (NBI) at low drain bias

June 30, 2020

Author(s)

Kin P. Cheung

We observed at very low drain bias an anomalous acceleration of Negative-bias-instability at room temperature, as if the channel temperature has been raised...

Evolving Advanced Persistent Threat Detection Using Provenance Graph and Metric Learning

June 29, 2020

Author(s)

Gbadebo Ayoade, Khandakar A. Akbar, Pracheta Sahoo, Yang Gao, Anoop Singhal, Kangkook Jee, Latifur Khan, Anmol Agarwal

Advanced persistent threats (APT) have increased in recent times as a result of the rise in interest by nationstates and sophisticated corporations to obtain...