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Bridging Length Scales in the Analysis of Transient Tests for Metallic Materials
Aditya Gokhale, , Jayant Jain, Rajesh Prasad, Heung Nam Han
Published in American Society of Mechanical Engineers (ASME)
2019
Volume: 141
   
Issue: 1
Abstract
The transient data obtained during stress relaxation test of polycrystalline materials has broader implications. The test is influenced by the material length scale. Efforts to mathematically bridge data at different length scales is scarce. In the present work, it is attempted to modify a recently proposed stress relaxation model with additional coefficients to accommodate the mechanical behavior at different length scales. The macroscale stress relaxation test was performed using a tensile testing machine, whereas the micro- and nanoscale specimens were tested using indentation technique. Assuming power law rate behavior, a scaling relation is derived initially to correlate the indentation pressure and flow stress. © Copyright 2019 by ASME.
About the journal
JournalJournal of Engineering Materials and Technology, Transactions of the ASME
PublisherAmerican Society of Mechanical Engineers (ASME)
ISSN00944289
Open AccessNo
Concepts (14)
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    MATERIALS TESTING APPARATUS
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    Polycrystalline materials
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    Stress relaxation
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    Tensile testing
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    Transient analysis
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    DIFFERENT LENGTH SCALE
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    MATERIAL LENGTH SCALE
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    Mechanical behavior
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    METALLIC MATERIAL
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    Scaling relations
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    STRESS RELAXATION TESTS
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    TENSILE TESTING MACHINES
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    Transient tests
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    Indentation