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Displaying 7976 - 8000 of 13219

Improving Fitting CAD to 3D Point Cloud Acquired with Line-of-Sight Sensor

November 7, 2023
Author(s)
Marek Franaszek, Prem Rachakonda, Kamel S. Saidi
… Due to self-occlusions in 3D point clouds acquired with line-of-sight sensors, an … incomplete representation of an object's surface is used in fitting a CAD (computer-aided design) model to the data. … pose. We demonstrate on experimental data obtained from manufacturing-relevant parts that the final CAD alignment can …

A Novel Data Standards Platform using ISO Core Components Technical Specification

August 1, 2021
Author(s)
Nenad Ivezic, Boonserm Kulvatunyou, Elena Jelisic, Hakju Oh, Simon P. Frechette, Vijay Srinivasan
… It is generally observed in inter-organizational communication that present-day data … costly and too complex to develop and use. These problems in data exchange are felt keenly by manufacturing industry with its vast supply chains. In … Technical Conferences & Computers and Information in Engineering Conference (IDETC-CIE 2021) …

Ceramic Materials and Powder Diffraction

September 15, 2019
Author(s)
Winnie K. Wong-Ng
… We have attempted to categorize these materials in terms of both their functions and applications, from … exhibit similar features during processing and manufacturing (sintering and grain growth, texture, residual … demonstrated with selected representative applications. In many cases, the combined use of powder diffraction …

Data-driven approaches to optical patterned defect detection

September 5, 2019
Author(s)
Mark-Alexander Henn, Hui Zhou, Bryan M. Barnes
… classification methods have become increasingly popular in recent years due to ever-increasing computation power. While advances in semiconductor devices are the basis for this growth, few … a known and challenging problem in semiconductor manufacturing. A fundamental CNN approach is shown to extend …

Comparative Peg-in-Hole Testing of a Force-Based Manipulation Controlled Robotic Hand

April 20, 2018
Author(s)
Karl Van Wyk, Mark Culleton, Joseph A. Falco, Kevin Kelly
… to perform the fine manipulation tasks typical within manufacturing assembly. Accordingly, this paper demonstrates … the performance of robotic systems within this area, a peg-in-hole test method is created along with a systematic data … Comparative Peg-in-Hole Testing of a Force-Based Manipulation Controlled …

Workshop Report: Research Roadmap for Reducing the Fire Hazard of Materials in the Future

March 8, 2018
Author(s)
Rick D. Davis, Mauro Zammarano, Nathan D. Marsh
… Cross-Cutting research should target Priority Applications in order to have the greatest impact on fire losses. " … Residential Upholstered Furniture " Residential Buildings in WUI Communities " Multi-Story Timber Construction " … Research Roadmap for Reducing the Fire Hazard of Materials in the Future …

Model of Mobile Manipulator Performance Measurement using SysML

November 3, 2017
Author(s)
Roger V. Bostelman, Sebti Foufou, Tsai H. Hong, Mili Shah
Test methods for measuring safety and performance of mobile manipulators have yet to be developed. Therefore, potential mobile manipulator users cannot compare one system to another. Systems Modeling Language (SysML) is a general-purpose modeling language

Framework for Cyber-Physical Systems: Volume 3, Timing Annex

September 28, 2017
Author(s)
David A. Wollman, Marc A. Weiss, YaShian Li-Baboud, Edward R. Griffor, Martin J. Burns
… (CPS PWG) to bring together a broad range of CPS experts in an open public forum to help define and shape key … across multiple smart application domains, including smart manufacturing, transportation, energy, and healthcare. The … This volume contains additional material on timing in cyber-physical systems produced by the timing subgroup, …

Chapter 12 Depth profiling

September 17, 2017
Author(s)
Thomas M. Wallis, Pavel Kabos
… ground penetrating radars (GPR) [1], defect spectroscopy in materials, fault detection in construction and manufacturing, and the detection of hidden objects at secure …

A compact, thermal noise limited reference cavity for ultra-low noise microwave generation

March 23, 2017
Author(s)
Josue Davila-Rodriguez, Frederick N. Baynes, Andrew D. Ludlow, Tara M. Fortier, Holly F. Leopardi, Scott A. Diddams, Franklyn J. Quinlan
A 25 mm long, rigidly-held, ultra-stable optical frequency reference cavity is demonstrated. The cavity spacer has an easy-to-manufacture cylindrical shape which nonetheless exhibits a holding geometry predicted to be first-order insensitive to the

Enviromental Concerns Facing the Ceramics Industry

February 19, 2017
Author(s)
Stephen W. Freiman
… has been increased attention paid by ceramic manufacturers in the United States to environmental issues facing their businesses. In a recent survey of its members, the environment was … as the primary issue facing the ceramics industry in the next five years. Specific environmental issues include …

Vector-Network-Analyzer Calibration Using Line and Multiple Coplanar-Waveguide Offset Reflects

December 9, 2016
Author(s)
Arkadiusz C. Lewandowski, Wojciech Wiatr, Dazhen Gu, Nate Orloff, Thomas Mitchell (Mitch) Wallis, Pavel Kabos
… technique to vector-network-analyzer calibration in the on-wafer environment. This technique uses a set of … approach by performing vector-network analyzer calibration in the 0.7-40 GHz frequency range with a set of offset-short …

Evaluating the Oxidative Potential of Indoor and Outdoor Particles with an EPR Assay

June 19, 2016
Author(s)
Shahana S. Khurshid, Steven Emmerich, Andrew K. Persily
… (OH) generating capacity of particles has been measured in several outdoor locations, but it remains unquantified in indoor environments where extended periods of exposure are … inside and outside an unoccupied manufactured test house in Maryland, USA. The oxidative potential of particles was …

Geometric Interoperability via Queries

May 19, 2014
Author(s)
Vijay Srinivasan
… of the classical problem of part interchangeability in mechanical assemblies. Interoperability subsumes the … consistent supporting mathematical models, high overhead in supporting new representations, and inability to provide … many common geometric tasks in computer aided design and manufacturing, including model acquisition and exchange, …

Optimizing Hybrid Metrology through a Consistent Multi-Tool Parameter Set and Uncertainty Model

April 14, 2014
Author(s)
Richard M. Silver, Bryan Barnes, Nien F. Zhang, Hui Zhou, Andras Vladar, John S. Villarrubia, Regis J. Kline, Daniel Sunday, Alok Vaid
… There has been significant interest in hybrid metrology as a novel method for reducing overall … substantially different models and underlying physics. In this presentation we will work through realistic examples … to adapt quantitative hybrid metrology into a high volume manufacturing environment. …

Reduction of Exposure to Ultrafine Particles by Kitchen Exhaust Hoods: The Effects of Varying Flow Rates, Particle Size, and Burner Position

June 6, 2012
Author(s)
Dong H. Rim, Lance L. Wallace, Steven J. Nabinger, Andrew K. Persily
… investigates the effectiveness of a kitchen range hood in reducing indoor levels of UFP emitted from a gas stove and oven. Experimental measurements in a manufactured test house monitored size-resolved UFP (2 … the decay of a tracer gas (sulfur hexafluoride, SF6) in seven locations within the house to determine the building …

Technical Note on Unexpected Bias in NIST 4p Ionization Chamber Measurements

April 4, 2012
Author(s)
Michael P. Unterweger, Ryan P. Fitzgerald
… The chamber and measurement method (Fig. 1) was described in Unterweger et al. (1992) and Calhoun (1987). The basic … data and the chi squared fitting technique are described in Hoppes and Schima (1982). In January of 2010, it was discovered that the position of …

Modeling Line Edge Roughness in Lamellar Block Copolymer Systems

March 21, 2012
Author(s)
Paul N. Patrone, Gregg M. Gallatin
… However, if copolymers are to be useful on an industrial manufacturing scale, they must meet or exceed lithography … to modeling the LER of lamellar microdomain interfaces in a strongly segregated block copolymer system; … from the system boundary. Our results suggest that in order to meet target LER goals at the 15, 11, and 6 nm …

Three-dimensional Nanometrology with TSOM Optical Method

December 10, 2011
Author(s)
Ravikiran Attota
… (SEM), and atomic force microscopy (AFM). TSOM can be used in both reflection and transmission modes and is applicable … roughness measurements; and nanoscale movements of parts in MEMS/NEMS. Industries that could benefit include … potentially significant savings and yield improvements in manufacturing. …
Displaying 7976 - 8000 of 13219
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