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Displaying 201 - 225 of 2957

Improved thermal-vacuum compatible flat plate radiometric source for system-level testing of optical sensors

September 15, 2015
Author(s)
Steven W. Brown, Mark A. Schwarz, Craig J. Kent, Robert Bousquet
… the development of an improved vacuum compatible flat plate radiometric source used for characterizing and … situ, throughout their testing period. The original flat plate radiometric source was developed for use by the VIIRS … Improved thermal-vacuum compatible flat plate radiometric source for system-level testing of optical …

Accurate Picoscale Forces for Insitu Calibration of AFM

September 3, 2009
Author(s)
Koo-Hyun Chung, Gordon A. Shaw, Jon R. Pratt
The force sensitivity of an atomic force microscope is calibrated directly using an in situ realization of primary electrostatic forces ranging from 320 pN to 3.3 nN with accuracy of a few percent. The absolute accuracy of a common atomic force microscope

MEMS Parallel Plate Rheometer for Oscillatory Shear Micro Rheology Measurements

December 11, 2009
Author(s)
Gordon Christopher, Nicholas G. Dagalakis, Steven D. Hudson, Kalman D. Migler
… a fluid s micro structure. We demonstrate a MEMs parallel plate rheometer for micro rheology that confines viscoelastic … response to dynamic oscillatory shear. The MEMs Parallel Plate rheometer uses a 1 mm square nano positioner stage to … the gap between the stage and a transparent cover plate that allows optical observation. By decreasing this …

Fracture Toughness Tests at 77 K and 4 K on 316L Stainless Steel Welded Plates

July 29, 2022
Author(s)
Jake Benzing, Nicholas Derimow, Enrico Lucon, Dash Weeks
… from the centers of four 316L welded stainless steel plates, each produced by a different vendor. Although the plates were produced in accordance with the same … Tests at 77 K and 4 K on 316L Stainless Steel Welded Plates …

Effects of Lateral Plate Dimensions on Acoustic Emission Signals From Dipole Sources

December 1, 2001
Author(s)
Marvin A. Hamstad, Agnes O'Gallagher, John M. Gary
… of acoustic emission (AE) were calculated in aluminum plate samples of two different lateral dimensions. Both … were calculated for positions of the receiver on the top plate surface at several different distances (in the … types that were located at different depths within the plate thickness. Analysis of the simulated AE signals shows …

A Fundamental Equation of State for Vinyl Chloride

January 10, 2022
Author(s)
Monika Thol, Florian Fenkl, Eric W. Lemmon
… A fundamental equation of state in terms of the Helmholtz … energy is presented for vinyl chloride. Due to its fundamental nature, it can be used to consistently calculate … A Fundamental Equation of State for Vinyl Chloride …

Residual Stress in Additive Manufactured Nickel Alloy 625 Parts

June 29, 2018
Author(s)
Lindsey B. Bass, Justin L Milner, Thomas Gnaupel-Herold, Shawn P. Moylan
… the stresses first need to be quantified. Cylindrical Nickel Alloy 625 samples were designed with varied outer … Residual Stress in Additive Manufactured Nickel Alloy 625 Parts …

Homogenization Kinetics of a Nickel-based Superalloy Produced by Powder Bed Fusion Laser Sintering

January 26, 2017
Author(s)
Fan Zhang, Lyle E. Levine, Andrew J. Allen, Eric Lass, Sudha Cheruvathur, Mark R. Stoudt, Maureen E. Williams, Yaakov S. Idell, Carelyn E. Campbell
… situ observation of the homogenization kinetics of an AM nickel-based superalloy using synchrotron small angle X-ray … Homogenization Kinetics of a Nickel-based Superalloy Produced by Powder Bed Fusion Laser …

Spectrum of Ni V in the Vacuum Ultraviolet

November 27, 2019
Author(s)
Jacob W. Ward, A J. Raassen, Alexander Kramida, Gillian Nave
… available data used for observations of quadruply ionized nickel (Ni V) in white dwarf stars (Berengut et al. 2013). … Atomic Spectroscopy, Laboratory Astrophysics, Nickel V, White Dwarf Stars …

Acoustic Emission Source Location in a Thick Steel Plate Using Lamb Modes

January 1, 2007
Author(s)
Marvin A. Hamstad
… below the top surface of a 25.4 mm (1 inch) thick steel plate with large transverse dimensions. The depths ranged … representing sources at various depths over the whole plate thickness were available. The modeled signals were … range and source depth. For sources located near the plate top surface, a Rayleigh wave was observed in the top …

Analysis of Thermal-Conductivity Measurement Data from International Comparison of National Laboratories

June 19, 2012
Author(s)
Bruno Hay, Robert R. Zarr, Clark Stacey, Leonel Lira Cortes, Ulf Hammerschmidt, Nikolay Sokolov, J.T. Zhang, Jean Remy Filtz
For the first time under the auspices of the Bureau International des Poids et Mesures (BIPM), seven national metrology institutes (NMIs) participated in an international interlaboratory comparison on thermal-conductivity measurements by the guarded hot

Nondestructive quantification of single crystal elasticity for additively manufactured SB-CoNi-10C, IN625, and Ti64

February 2, 2023
Author(s)
Jeff Rossin, Patrick Leser, Jake Benzing, Chris Torbet, Peter Dillon, Stephen Smith, Samantha Daly, Tresa Pollock
… reduction in computational cost. AM specimens of a cobalt-nickel-base superalloy (SB-CoNi-10C) demonstrate that the … texture values. The single crystal elastic constants of nickel-base-superalloy Inconel 625 (IN625) and Ti-6Al-4V … Non-destructive examination, Texture, Titanium alloys, Nickel alloys, Cobalt-nickel-base superalloys …

Anisotropic elastic properties of nanocrystalline nickel thin films

May 1, 2006
Author(s)
Donna C. Hurley, Roy H. Geiss, N Jennett, Malgorzata Kopycinska-Mueller, A Maxwell, Jens Mueller, David T. Read, J Wright
… microscope. Here, we present AFAM and SAWS results for nickel films with thicknesses from 50 to 800 nm. For the … Anisotropic elastic properties of nanocrystalline nickel thin films …

High Throughput Measurement of Peel of a Pressure Sensitive Adhesive

January 1, 2006
Author(s)
P M. McGuiggan, James J. Filliben
The peel force of a pressure sensitive adhesive (PSA) tape is measured on a surface that varied linearly in temperature. As the tape is peeled from the surface, the adhesive is peeled from a surface at a different temperature. The temperature can be
Displaying 201 - 225 of 2957
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