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Displaying 1801 - 1825 of 4225

Airspeed Calibration Services: Laser Doppler Anemometer Calibration and Its Uncertainty

June 20, 2012
Author(s)
Iosif I. Shinder, Michael R. Moldover, J. M. Hall, Mike Duncan, Joe Keck
The National Institute of Standards and Technology (NIST) and the Oak Ridge National Laboratory (ORNL) are improving their airspeed calibration services. Both laboratories use spinning disks to generate linear velocities that are traceable to NIST’s length

Improved Nozzle Manifold for Gas Flow Calibrations

June 20, 2012
Author(s)
Aaron N. Johnson, Chunhui Li, John D. Wright, Gina M. Kline, Christopher J. Crowley
We developed a new nozzle manifold that reduced the uncertainty of flow calibrations from 0.09 % to as low as 0.074 % for flows of air up to 0.84 kg/s (43 000 L/min at reference conditions of 101.325 kPa and 293.15 K). The nozzle manifold also reduces the

USARSim/ROS: A Combined Framework for Robotic Control and Simulation

June 20, 2012
Author(s)
Stephen B. Balakirsky, Zeid Kootbally
The Robot Operating System (ROS) has been steadily gaining popularity among robotics researchers as an open source framework for robot control. The Unified System for Automation and Robot Simulation (USARSim) has been used for many years by robotics

A COMPUTER AIDED SYSTEM FOR SUSTAINABILITY ANALYSIS FOR DIE-CASTING PROCESS

June 15, 2012
Author(s)
Jatinder Madan, Mahesh Mani, Princepal Singh, Amrik Singh
Currently available sustainability analysis systems for the die-casting process primarily depend on the material properties and do not account for process information. As a result they are unable to assess or compare the sustainability of parts made using

Technology Readiness Levels for Randomized Bin Picking

June 13, 2012
Author(s)
Jeremy A. Marvel, Roger D. Eastman, Geraldine S. Cheok, Kamel S. Saidi, Tsai Hong Hong, Elena R. Messina
A proposal for the utilization of Technology Readiness Levels to the application of unstructured bin picking is discussed. A special session was held during the 2012 Performance Metrics for Intelligent Systems workshop to discuss the challenges and

Enabling Machining Vision Using STEP-NC

June 8, 2012
Author(s)
Martin Hardwick, Frederick M. Proctor, David Loffredo, Sid Venkatesh
STEP-NC is a new data format for manufacturing control. One of its applications is to enable integrated on machine measurement of machining processes using vision systems and other sensors. In this paper we describe the manufacturing process and

Synthesis of Manufacturing and Facility Data for Sustainability Analysis

June 8, 2012
Author(s)
John L. Michaloski, Guodong Shao, Swee K. Leong, Frank H. Riddick, Jonatan Berglund, Jorge Arinez, Stephan Biller
This paper discusses data synthesis of production and facility knowledge for sustainability analysis by applying the ISA 95 "Activity Models of Manufacturing Operations Management" (MOM) model. Presently, production and facility management are "silo"

Calibration of Laminar Flow Meters for Process Gases

June 1, 2012
Author(s)
John D. Wright, Thiago Cobu, Robert F. Berg, Michael R. Moldover
We calibrated three models of commercially-manufactured, laminar flow meters (LFMs) at four pressures (100 kPa, 200 kPa, 300 kPa, and 400 kPa) with five gases (N2, Ar, He, CO2, and SF6) over a 10:1 flow range using NIST’s primary flow standards as

Modeling Gaps and Overlaps of Sustainability Standards

May 28, 2012
Author(s)
Paul W. Witherell, Sudarsan Rachuri, Anna D'Alessio
Organizational and production dispersions in manufacturing enterprises can create situations where manufacturers are asked to conform to multiple sustainability standards to participate in targeted markets. These standards may vary in scope, application
Displaying 1801 - 1825 of 4225
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