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Title: Photonic displacement interferometer : Thermomechanical Shock (TMS) and early Thermostructural Response (TSR) measurement applications.

Abstract

No abstract prepared.

Authors:
Publication Date:
Research Org.:
Sandia National Laboratories
Sponsoring Org.:
USDOE
OSTI Identifier:
943940
Report Number(s):
SAND2006-1047C
TRN: US200902%%386
DOE Contract Number:
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Proposed for presentation at the 24th Annual HEART (Hardened Electronics and Radiation Technology) conference held March 7-10, 2006 in Santa Clara, CA.
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; INTERFEROMETERS; THERMOMECHANICAL TREATMENTS; RESPONSE FUNCTIONS

Citation Formats

Jones, Scott Christopher. Photonic displacement interferometer : Thermomechanical Shock (TMS) and early Thermostructural Response (TSR) measurement applications.. United States: N. p., 2006. Web.
Jones, Scott Christopher. Photonic displacement interferometer : Thermomechanical Shock (TMS) and early Thermostructural Response (TSR) measurement applications.. United States.
Jones, Scott Christopher. Wed . "Photonic displacement interferometer : Thermomechanical Shock (TMS) and early Thermostructural Response (TSR) measurement applications.". United States. doi:.
@article{osti_943940,
title = {Photonic displacement interferometer : Thermomechanical Shock (TMS) and early Thermostructural Response (TSR) measurement applications.},
author = {Jones, Scott Christopher},
abstractNote = {No abstract prepared.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Feb 01 00:00:00 EST 2006},
month = {Wed Feb 01 00:00:00 EST 2006}
}

Conference:
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  • Following an overview of thermal plasma applications in metallurgy, papers are presented which are grouped under topics dealing with fundamentals and modeling, plasma melting and refining, plasma synthesis of materials, and plasma spraying and consolidation. Attention is given to the influence of the arc fluctuations on the temperature measurements in dc plasma jets, measurements of two-dimensional electron densities, a model of an argon plasma torch discharging into nitrogen, nonequilibrium plasma processing of ores, and the reaction of nitrogen with liquid steel in a plasma induction reactor. Consideration is also given to the synthesis of ceramic carbide powders in a nontransferredmore » arc thermal plasma reactor, materials processing using induction plasma technology, and low-pressure plasma spraying of Al-Fe-Ce sheet materials. Other papers are on a titanium aluminide foil made from plasma sprayed preform, large area deposition of YBaCuO films by plasma flash evaporation, and a mathematical model of the spheroidization of porous agglomerate particles in thermal plasma torches.« less
  • One of the standard methods for characterizing mechanical shock is by means of the shock spectrum. The principal application of the shock spectrum in aerospace technology is to permit component shock test specifications to be generated, independent of specific time histories. Inattention to the dynamics of the instrumentation system used to measure mechanical shock can result in distorted test data. Erroneous component test specifications will originate from shock spectra calculations based on these distorted data. Measurement system design is frequently based upon amplitude response considerations with phase response ignored. In structural testing, nonlinear phase response in measurement systems results inmore » distorted transient data being recorded for analysis with resultant error in the computed shock spectra. Design guidelines are provided to preclude these errors from occurring.« less
  • A Velocity Interferometer System for Any Reflector (VISAR) is a laboratory tool that measures high velocities by continuously measuring the Doppler shift of laser light reflected from a moving surface. It produces lower output frequencies than a displacement interferometer in which Doppler-shifted laser light from a moving target is mixed with unshifted laser light. To obtain lower frequencies, a VISAR employs a wide-angle Michelson interferometer with a time delay in one leg. Undelayed and delayed light rays are thus mixed to detect the relatively small difference between two Doppler shifts produced by accelerating motion at two slightly different velocities. Inmore » most VISAR data reduction programs, the velocity is assumed to be proportional to the interferometer fringe count at any instant. This yields velocity details that are inaccurate over the interferometer delay time. In the examples of this paper, the signal time resolution was shorter than the interferometer delay. The subject of this paper is a data reduction method that uses the displacement information in suitable VISAR signals to recover velocity features that occur during the interferometer delay. 9 refs., 8 figs.« less