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Displaying 2026 - 2050 of 7108

Modeling Integrated Manufacturing Data with SAM

January 1, 1986
Author(s)
Stanley Su
Factory automation, a relatively new technology, is being pursued by all industrial countries. It promises to increase factory productivity; improve product quality; relieve workers from repetitive and boring tasks and unpleasant, hazardous environments

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

Modeling and Analysis of Disproportionate Collapse of RC Structures

October 31, 2011
Author(s)
Yihai Bao, Hai S. Lew, S K. Kunnath
Collapse analyses of a 10-story reinforced concrete frame building are carried out to investigate the robustness of structural systems against column removal scenarios. Computationally efficient reduced models are developed and used in the analyses. The

Summary of Modeling and Simulation for NIST RoboCrane? Applications

October 1, 1997
Author(s)
E Amatucci, Roger V. Bostelman, Nicholas Dagalakis, T M. Tsai
The Intelligent Systems Division (ISD) at the National Institute of Standards and Technology has been using modeling and simulation and software for conceptual design and prototyping of advanced robotic cranes. RoboCrane¿ concepts have been developed for

Sprinklers, Vent, and Draft Curtain Interaction: Modeling and Experiment

February 25, 1998
Author(s)
Kevin B. McGrattan, Anthony P. Hamins, D. D. Evans
The second and most recent application of the NIST Industrial Fire Simulation (IFS) System is to predict the performance of sprinklers, draft curtains and roof vents in storage facilities and retail spaces. The IFS System is a series of computational fluid

Metrological challenges for measurements of key climatological observables, Part 4: Atmospheric relative humidity

December 15, 2015
Author(s)
Allan H. Harvey, J W. Lovell-Smith, Rainer Feistel, Olaf Hellmuth, Stephanie A. Bell, M Heinonen, J R. Cooper
Water in its three ambient phases plays the central thermodynamic role in the terrestrial climate system. Clouds control Earth’s radiation balance, atmospheric water vapour is the strongest “greenhouse” gas, and non-equilibrium relative humidity at the air

SELF-IMPROVING ADDITIVE MANUFACTURING KNOWLEDGE MANAGEMENT

August 26, 2018
Author(s)
Yan Lu, Zhuo Yang, Douglas Eddy, Sundar Krishnamurty
The current AM development environment is far from being mature. Both software applications and workflow management tools are very limited due to the lack of knowledge to support engineering decision makings. AM knowledge includes design rules, operation

Investigating predictive metamodeling for additive manufacturing

August 21, 2016
Author(s)
Zhuo Yang, Douglas Eddy, Sundar Krishnamurty, Ian Grosse, Peter O. Denno, Felipe F. Lopez
Additive manufacturing processes offer significant commercial advantages due to unique and advanced process capabilities. Production of metal parts can involve trial and error. This is often due to limited understanding of variability in properties and the

An improved L1 based algorithm for standardized planar datum establishment

October 1, 2014
Author(s)
Craig M. Shakarji, Vijay Srinivasan
This paper has two major goals. First, we present an algorithm for establishing planar datums suitable for a default in tolerancing standards. The algorithm is based on a constrained minimization search based on the L_1 (L1) norm after forming a convex

Effects of Environmental Temperature and Humidity on the Geometry and Strength of Polycarbonate Specimens Prepared by Fused Filament Fabrication

October 3, 2020
Author(s)
Lichen Fang, Yan Yishu, Ojaswi Agarwal, shengyu Yao, Jonathan Seppala, Sung Hoon Kang
It is widely known that the printing quality of fused filament fabrication (FFF) is heavily affected by environmental temperature and humidity, as the case of warping and porosity. However, there is little understanding about the quantitative relations
Displaying 2026 - 2050 of 7108
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