Developing the Axisymmetric Expanding Ring: A High Strain-Rate Materials Characterization Test

Developing the Axisymmetric Expanding Ring: A High Strain-Rate Materials Characterization Test

Bibliographic Details
Main Author: Johnson, Jason R.
Language:English
Published: The Ohio State University / OhioLINK 2014
Subjects:
Materials Science
Engineering
Mechanics
Metallurgy
Mechanical Engineering
Physics
Electromagnetics
Experiments
Ring expansion
axisymmetric expanding ring test
high rate testing
high strain rate
OFHC copper
FIRE system
photon doppler velocimetry
PDV
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=osu1387807565
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spelling ndltd-OhioLink-oai-etd.ohiolink.edu-osu13878075652021-08-03T06:21:06Z Developing the Axisymmetric Expanding Ring: A High Strain-Rate Materials Characterization Test Johnson, Jason R. Materials Science Engineering Mechanics Metallurgy Mechanical Engineering Physics Electromagnetics Experiments Ring expansion axisymmetric expanding ring test high rate testing high strain rate OFHC copper FIRE system photon doppler velocimetry PDV Towards the end goal of high rate tensile characterization of any material, existing ideas and newly developed technology have been combined in the form of a test platform dubbed the FIRE system. The acronym stands for Fully Instrumented Ring Expansion, a concept that is capable of evaluating the dynamic behavior of a wide range of materials in tension at strain rates well in excess of 1000/s. At the center of the design is a collection of techniques used to impulsively drive ring shaped samples radially outward in a highly symmetric fashion. This geometry avoids many of the traditional pitfalls associated with high rate testing such as end effects and critical extension speeds. Precision velocimetry has been adapted to the system utilizing state of the art optical and electronic equipment via a subassembly known as PDV (Photon Doppler Velocimetry). The PDV capabilities at present include determination of sample velocities up to 3.2 km/s with simultaneous displacement resolution on the order of 1-10 microns. As validation of the techniques developed, numerous representative material studies were carried out and compared to established data from other sources. Results were found to be in favorable agreement, verifying the efficacy of the methods. Additionally, the expanding ring test has been applied in conjunction with sample types and actuator technologies not reported previously. This provides an expanded usefulness to the test, which has been developed to the point now of being user friendly. 2014-06-02 English text The Ohio State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=osu1387807565 http://rave.ohiolink.edu/etdc/view?acc_num=osu1387807565 unrestricted This thesis or dissertation is protected by copyright: some rights reserved. It is licensed for use under a Creative Commons license. Specific terms and permissions are available from this document's record in the OhioLINK ETD Center.
collection NDLTD
language English
sources NDLTD
topic Materials Science
Engineering
Mechanics
Metallurgy
Mechanical Engineering
Physics
Electromagnetics
Experiments
Ring expansion
axisymmetric expanding ring test
high rate testing
high strain rate
OFHC copper
FIRE system
photon doppler velocimetry
PDV
spellingShingle Materials Science
Engineering
Mechanics
Metallurgy
Mechanical Engineering
Physics
Electromagnetics
Experiments
Ring expansion
axisymmetric expanding ring test
high rate testing
high strain rate
OFHC copper
FIRE system
photon doppler velocimetry
PDV
Johnson, Jason R.
Developing the Axisymmetric Expanding Ring: A High Strain-Rate Materials Characterization Test
author Johnson, Jason R.
author_facet Johnson, Jason R.
author_sort Johnson, Jason R.
title Developing the Axisymmetric Expanding Ring: A High Strain-Rate Materials Characterization Test
title_short Developing the Axisymmetric Expanding Ring: A High Strain-Rate Materials Characterization Test
title_full Developing the Axisymmetric Expanding Ring: A High Strain-Rate Materials Characterization Test
title_fullStr Developing the Axisymmetric Expanding Ring: A High Strain-Rate Materials Characterization Test
title_full_unstemmed Developing the Axisymmetric Expanding Ring: A High Strain-Rate Materials Characterization Test
title_sort developing the axisymmetric expanding ring: a high strain-rate materials characterization test
publisher The Ohio State University / OhioLINK
publishDate 2014
url http://rave.ohiolink.edu/etdc/view?acc_num=osu1387807565
work_keys_str_mv AT johnsonjasonr developingtheaxisymmetricexpandingringahighstrainratematerialscharacterizationtest
_version_ 1719435228043280384

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