NDLI: Ultraviolet digital image correlation (UV-DIC) for high temperature applications.

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Laboratory-based micro-X-ray fluorescence setup using a von Hamos crystal spectrometer and a focused beam X-ray tube.

Atom chip apparatus for experiments with ultracold rubidium and potassium gases.

Freestanding sample holder for ultrafast optical spectroscopy at low temperatures.

Calibration of a gated flat field spectrometer as a function of x-ray intensity.

Direct inversion methods for spectral amplitude modulation of femtosecond pulses.

An ultra-high vacuum electrochemical flow cell for in situ/operando soft X-ray spectroscopy study.

Analysis of higher harmonic contamination with a modified approach using a grating analyser.

Design and performance of AERHA, a high acceptance high resolution soft x-ray spectrometer.

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Range-based control of dual-stage nanopositioning systems.

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Implementation and analysis of an innovative digital charge amplifier for hysteresis reduction in piezoelectric stack actuators.

Miniaturized high-precision piezo driven two axes stepper goniometer.

Three-dimensional surface figure measurement of high-accuracy spherical mirror with nanoprofiler using normal vector tracing method.

A seamless acquisition digital storage oscilloscope with three-dimensional waveform display.

An automated thermophoretic soot sampling device for laboratory-scale high-pressure flames.

Design of voice coil motor dynamic focusing unit for a laser scanner.

Algorithm to optimize transient hot-wire thermal property measurement.

Design and test of a flat-top magnetic field system driven by capacitor banks.

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Impact of parasitic thermal effects on thermoelectric property measurements by Harman method.

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Free-flight measurement technique in the free-piston high-enthalpy shock tunnel.

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Ultraviolet digital image correlation (UV-DIC) for high temperature applications.

Development of an electrochemical micromachining instrument for the confined etching techniques.

Isothermal method for hydrate studies using a transparent variable volume cell.

An optically modulated zero-field atomic magnetometer with suppressed spin-exchange broadening.

Nonlinear characterization of a single-axis acoustic levitator.

Four-probe measurements with a three-probe scanning tunneling microscope.

Note: large area deposition of Rh single and Rh/W/Cu multilayer thin films on stainless steel substrate by pulsed laser deposition technique.

Note: a Piezo Tip/Tilt Platform: structure, kinematics, and experiments.

Note: laser beam scanning using a ferroelectric liquid crystal spatial light modulator.

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Note: nonlinear susceptibility from high DC field torque magnetometry.

Note: neutron bang time diagnostic system on Shenguang-III prototype.

Note: application of a pixel-array area detector to simultaneous single crystal X-ray diffraction and X-ray absorption spectroscopy measurements.

Note: a novel vacuum ultraviolet light source assembly with aluminum-coated electrodes for enhancing the ionization efficiency of photoionization mass spectrometry.

Note: switching crosstalk on and off in Kelvin Probe Force Microscopy.

Note: computational estimation of sparkgap inductance in nitrogen medium.

Note: a novel method to measure the deformation of diamond anvils under high pressure.

Note: error elimination for ellipsometry by laser feedback instrument.

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Ultraviolet digital image correlation (UV-DIC) for high temperature applications.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Berke, Ryan B. Lambros, John
Description	Country affiliation: United States Author Affiliation: Berke RB ( Department of Aerospace Engineering, University of Illinois, 306 Talbot Laboratory, 104 S. Wright St., Urbana, Illinois 61801, USA.); Lambros J ( Department of Aerospace Engineering, University of Illinois, 306 Talbot Laboratory, 104 S. Wright St., Urbana, Illinois 61801, USA.)
Abstract	A method is presented for extending two-dimensional digital image correlation (DIC) to a higher range of temperatures by using ultraviolet (UV) lights and UV optics to minimize the light emitted by specimens at those temperatures. The method, which we refer to as UV-DIC, is compared against DIC using unfiltered white light and DIC using filtered blue light which in the past have been used for high temperature applications. It is shown that at low temperatures for which sample glowing is not an issue all three methods produce the same results. At higher temperatures in our experiments, the unfiltered white light method showed significant glowing between 500 and 600 °C and the blue light between 800 and 900 °C, while the UV-DIC remained minimally affected until the material began nearing its melting point (about 1260 °C). The three methods were then used to obtain the coefficient of thermal expansion as a function of temperature for the nickel superalloy Hastelloy-X. All three methods give similar coefficients at temperatures below which glowing becomes significant, with the values also being comparable to the manufacturers specifications. Similar results were also seen in uniaxial tension tests.
ISSN	00346748
Issue Number	4
Journal	Review of Scientific Instruments
Volume Number	85
e-ISSN	10897623
Language	English
Publisher	American Institute of Physics
Publisher Date	2014-04-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Physics Discipline Chemistry
Content Type	Text
Resource Type	Article
Subject	Medicine Instrumentation

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