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Conferences

Towards STEP-Based Data Transfer in Layered Manufacturing

September 1, 1998

Author(s)

D Dutta, Anil Kumar, Mike Pratt, Ram D. Sriram

This paper concerns the informational requirements of layered manufacturing (LM). The most common industrial use of LM today is for rapid prototyping, but we...

Design of a Novel Fixture for Part Referencing

September 1, 1998

Author(s)

Walter W. Nederbragt, Bahram Ravani

This paper presents a novel design for a practical tactilesensing mechanical fixture. The fixture consists of two tactilesensing surfaces, a cylindrical surface...

Internet-Based Delivery of CAD/CAM Capability: An Industry Case Study

September 1, 1998

Author(s)

Simon Szykman, Ram D. Sriram

This paper presents a case study in the use of the Internet as a medium for exchange of information and delivery of computer-aided design and computer-aided...

Minimizing Errors in Phase Change Correction Measurements for Gage Blocks Using a Spherical Contact Techniques

September 1, 1998

Author(s)

John R. Stoup, Bryon S. Faust, Theodore D. Doiron

One of the most elusive measurement elements in gage block interferometry is the correction for the phase change on reflection. Techniques used to quantify this...

Accurate Polarization Dependent Loss Measurement and Calibration Standard Development

September 1, 1998

Author(s)

Rex M. Craig, Sarah L. Gilbert, Paul D. Hale

Are the Formulas for Mode-Field Diameter Correct?

September 1, 1998

Author(s)

Ronald C. Wittmann, M. Young

We have found conceptual problems with the far-field formula 1 for mode field diameter First, the formulation is incomplete in that it ignores the obliquity...

Biased Perturbation Method for Index Profiling Single-Mode Fibers from Near-Field and Far-Field Data

September 1, 1998

Author(s)

N. H. Fontaine, M. Young

We have developed a biased perturbation method for calculating the index profiles of single-mode fibers from either near-field or far-field data. Unlike other...

A Comparison of Differential Mode Delay Measurements on Multimode Fibers in the Time and Frequency Domains Brackets Indicate omission in Final Paper

September 1, 1998

Author(s)

John B. Schlager, Douglas L. Franzen

Multimode fiber bandwidth is currently measured using an overfilled launch condition. Such a launch is achieved by uniformly exciting the core and launching...

Narrowband Measurements of Polarization-Mode Dispersion Using the Modulation Phase Shift Technique

September 1, 1998

Author(s)

Paul A. Williams, A. J. Barlow, C. Mackechnie, John B. Schlager

A common characteristic of current methods for measuring polarization-mode dispersion (PMD) is the need for a broad optical bandwidth. With the increasing use...

Efficient Testing of Electronic Devices

September 1, 1998

Author(s)

T. M. Souders, Gerard N. Stenbakken, Hans Engler

The Applicability of Nonlinear Melt Rheology Concepts to the Nonlinear Solid Rheology of DGEBA/m-PDA Epoxy Resin in the Glassy Region

August 31, 1998

Author(s)

Gale A. Holmes, R C. Peterson, Donald L. Hunston, Walter G. McDonough

Most ductile polymers exhibit nonlinear viscoelastic behavior above 1% strain. In structural applications where matrix deformation may play and important role...

An Indirect Comparison Between Two Josephson Voltage Standard Systems With Different Algorithms

August 25, 1998

Author(s)

Yi-hua D. Tang, Richard L. Steiner, June E. Sims

Two Josephson Array Voltage Standard Systems using different calibration algorithms are operated at the National Institute of Standards and Technology. A manual...

A VRML Integration Methodology for Manufacturing Applications

August 24, 1998

Author(s)

Sanford P. Ressler, Afzal A. Godil, Quandou (. Wang, G S. Seidman

This paper describes several methods for using the Virtual Reality Modeling Language (VRML) as the visualization integration tech-nology for manufacturing...

Reliability of Conformance Tests

August 21, 1998

Author(s)

Robert C. Hagwood, Raghu N. Kacker, James H. Yen, D L. Banks, Lynne S. Rosenthal, Leonard J. Gallagher, Paul E. Black

A conformance test is a software assurance test that is applied in order to determine if specification requirements of the software are being met. It is a time...

NIST Atomic Spectra Database (1998)

August 13, 1998

Author(s)

Daniel E. Kelleher, William C. Martin, Wolfgang L. Wiese, J Sugar, Craig J. Sansonetti, Jeffrey R. Fuhr, Joseph Reader, Arlene Musgrove, Karen J. Olsen, Peter J. Mohr, G R. Dalton

Interface Morphology During Crystal Growth: Effects of Anisotropy and Fluid Flow

August 12, 1998

Author(s)

Sam R. Coriell, B T. Murray, A A. Chernov, Geoffrey B. McFadden

We treat the effect of shear flows on the morphological stability of a crystal growing from solution by a step mechanism at a given constant velocity. We carry...

Mobile Streams

August 4, 1998

Author(s)

Mudumbai Ranganathan, L S. Andrey, V Schaal

A large class of distributed testing, control and collaborative applications are reactive or event driven in nature. Such applications can be structured as a...

Effects of Finite Time Response and Soot Deposition on Thin Filament Pyrometry Measurements in Time-Varying Diffusion Flames

August 2, 1998

Author(s)

William M. Pitts, K C. Smyth, D Everest

Prior work has shown that thin filament pyrometry (TFP) is a powerful approach for making highly precise, spatially and temporally resolved line measurements of...

Flame Extinction by Sodium Bicarbonate Powder in a Cup Burner

August 2, 1998

Author(s)

Anthony P. Hamins

An apparatus was developed for testing the extinction efficiency of a solid powder in a coflowing non-premixed flame. Extinction measurements were performed by...

Analysis of Sea-Floor Earthquake Data

August 1, 1998

Author(s)

C E. Smith, D M. Boore

The Minerals Management Service (MMS), in cooperation with several oil and gas companies, installed a seismometer network on the ocean floor in the Santa...

Cold Neutron Prompt Gamma-Ray Activation Analysis at NIST - Current Status

August 1, 1998

Author(s)

Rick L. Paul, Richard M. Lindstrom

Water at the Polymer/Substrate Interface and its Role in the Durability of Polymer/Glass Fiber Composites

August 1, 1998

Author(s)

Tinh Nguyen, Walter E. Byrd, K Aouadi, D Alsheh

Fiber-reinforced polymer composites are increasingly used in offshore and civil engineering structures. In these applications, composite materials are often...

Spherical-Wave Characterization of Interior and Exterior Sources

August 1, 1998

Author(s)

David A. Hill

This paper presents the theoretical basis for spherical, near-field scanning in the general case where radiating sources exist both inside and outside the...

Data Selection for Broadcast News CSR Evaluations

August 1, 1998

Author(s)

W M. Fisher, Walter S. Liggett Jr, A N. Le, Jonathan G. Fiscus, D S. Pallett

Composition of the 1997 Hub-4 broadcast news test set is discussed. The composition is based on concurrent selection of a statistically equivalent test set for...

The Electrodeposition of Aluminium-Niobium Alloys From Chloroaluminate Electrolytes

August 1, 1998

Author(s)

Gery R. Stafford, G Haarberg

The electrochemical behavior of niobium in a 52:48 mole ratio A1C1 3:NaC1 molten salt electrolyte was examined by liner sweep voltammetry, chronoamperometry and...

Size Changes and Interpenetration Within Concentrated Dendrimer Solutions

August 1, 1998

Author(s)

T J. Prosa, Barry J. Bauer, A Topp, Eric J. Amis, R L. Scherrenberg

The field of dendrimer research has grown dramatically in recent years with the synthesis of new materials quickly outpacing the characterization of simple...

Wideband Acoustic Emission Displacement Signals as a Function of Source Rise-Time and Plate Thickness

August 1, 1998

Author(s)

Marvin A. Hamstad, John M. Gary, Agnes O'Gallagher

Using a dynamic finite element model, we studied the interrelationships between acoustic source rise-time and plate thickness in steel plates. The source was...

Atomic And Molecular Data And Their Applications

August 1, 1998

Author(s)

Wolfgang L. Wiese

The first International Conference on Atomic and Molecular Data And Their Applications (ICAMDATA) took place at the National Institute of Standards and...

A Robust Ontology for Manufacturing Systems Integration

August 1, 1998

Author(s)

Amy Knutilla, Craig I. Schlenoff, Robert W. Ivester

In all types of communication, the ability to share information is often hindered because the meaning of information can be drastically affected by the context...

Aerodynamic Databases and Electronic Standards for Windloads

August 1, 1998

Author(s)

T Whalen, Emil Simiu, G Harris, J Y. Lin, D Surry

As part of ongoing National Institute of Standards and Technology research on the development of a new generation of standard provisions for wind loads, we...

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