Algorithms for Nanoindentation Strain Rate Jump Testing and Analysis

Kevin M Schmalbach; N. A. Mara

doi:10.1007/s11340-022-00833-x

Algorithms for Nanoindentation Strain Rate Jump Testing and Analysis

Kevin M Schmalbach, N. A. Mara

Research output: Contribution to journal › Comment/debate › peer-review

3 Scopus citations

Abstract

Background: Understanding the dynamics of deformation processes is of interest for determining the dominant thermally activated processes during plasticity [1] and fracture [2, 3]. Strain rate jump (SRJ) tests have been recently introduced to investigate intrinsic deformation mechanisms and have been successfully utilized on some nanomechanical test platforms [4–6]. Objective: The goal is to create standardized SRJ testing and analysis protocols for Hysitron nanoindenters, which cannot be found in literature, besides our previous work [7]. Methods: Presented here is software to create SRJ test load functions for the TI980, which could be adapted to other instruments, and standardized protocols for analyzing the associated data. Results: These protocols are validated using single crystal tungsten as a model material and agree well with literature values from other instruments. Conclusions: New freely available software, validated on single crystal tungsten, creates opportunities for others to investigate intrinsic deformation mechanisms in more complex systems.

Original language	English (US)
Pages (from-to)	885-888
Number of pages	4
Journal	Experimental Mechanics
Volume	62
Issue number	5
DOIs	https://doi.org/10.1007/s11340-022-00833-x
State	Published - Jun 2022

Bibliographical note

Funding Information:
Parts of this work were carried out in the Characterization Facility, University of Minnesota, which receives partial support from NSF through the MRSEC program. NAM and KMS acknowledge support by DOE-NE’s Advanced Fuels Campaign through a Los Alamos National Laboratory subcontract number 536246.

Publisher Copyright:
© 2022, Society for Experimental Mechanics.

Keywords

Activation volume
Hysitron TI980
Mechanical properties
Mechanical testing
Strain rate sensitivity
Triboindenter 980

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title = "Algorithms for Nanoindentation Strain Rate Jump Testing and Analysis",

abstract = "Background: Understanding the dynamics of deformation processes is of interest for determining the dominant thermally activated processes during plasticity [1] and fracture [2, 3]. Strain rate jump (SRJ) tests have been recently introduced to investigate intrinsic deformation mechanisms and have been successfully utilized on some nanomechanical test platforms [4–6]. Objective: The goal is to create standardized SRJ testing and analysis protocols for Hysitron nanoindenters, which cannot be found in literature, besides our previous work [7]. Methods: Presented here is software to create SRJ test load functions for the TI980, which could be adapted to other instruments, and standardized protocols for analyzing the associated data. Results: These protocols are validated using single crystal tungsten as a model material and agree well with literature values from other instruments. Conclusions: New freely available software, validated on single crystal tungsten, creates opportunities for others to investigate intrinsic deformation mechanisms in more complex systems.",

keywords = "Activation volume, Hysitron TI980, Mechanical properties, Mechanical testing, Strain rate sensitivity, Triboindenter 980",

author = "Schmalbach, {Kevin M} and Mara, {N. A.}",

note = "Funding Information: Parts of this work were carried out in the Characterization Facility, University of Minnesota, which receives partial support from NSF through the MRSEC program. NAM and KMS acknowledge support by DOE-NE{\textquoteright}s Advanced Fuels Campaign through a Los Alamos National Laboratory subcontract number 536246. Publisher Copyright: {\textcopyright} 2022, Society for Experimental Mechanics.",

year = "2022",

month = jun,

doi = "10.1007/s11340-022-00833-x",

language = "English (US)",

volume = "62",

pages = "885--888",

journal = "Experimental Mechanics",

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T1 - Algorithms for Nanoindentation Strain Rate Jump Testing and Analysis

AU - Schmalbach, Kevin M

AU - Mara, N. A.

N1 - Funding Information: Parts of this work were carried out in the Characterization Facility, University of Minnesota, which receives partial support from NSF through the MRSEC program. NAM and KMS acknowledge support by DOE-NE’s Advanced Fuels Campaign through a Los Alamos National Laboratory subcontract number 536246. Publisher Copyright: © 2022, Society for Experimental Mechanics.

PY - 2022/6

Y1 - 2022/6

N2 - Background: Understanding the dynamics of deformation processes is of interest for determining the dominant thermally activated processes during plasticity [1] and fracture [2, 3]. Strain rate jump (SRJ) tests have been recently introduced to investigate intrinsic deformation mechanisms and have been successfully utilized on some nanomechanical test platforms [4–6]. Objective: The goal is to create standardized SRJ testing and analysis protocols for Hysitron nanoindenters, which cannot be found in literature, besides our previous work [7]. Methods: Presented here is software to create SRJ test load functions for the TI980, which could be adapted to other instruments, and standardized protocols for analyzing the associated data. Results: These protocols are validated using single crystal tungsten as a model material and agree well with literature values from other instruments. Conclusions: New freely available software, validated on single crystal tungsten, creates opportunities for others to investigate intrinsic deformation mechanisms in more complex systems.

AB - Background: Understanding the dynamics of deformation processes is of interest for determining the dominant thermally activated processes during plasticity [1] and fracture [2, 3]. Strain rate jump (SRJ) tests have been recently introduced to investigate intrinsic deformation mechanisms and have been successfully utilized on some nanomechanical test platforms [4–6]. Objective: The goal is to create standardized SRJ testing and analysis protocols for Hysitron nanoindenters, which cannot be found in literature, besides our previous work [7]. Methods: Presented here is software to create SRJ test load functions for the TI980, which could be adapted to other instruments, and standardized protocols for analyzing the associated data. Results: These protocols are validated using single crystal tungsten as a model material and agree well with literature values from other instruments. Conclusions: New freely available software, validated on single crystal tungsten, creates opportunities for others to investigate intrinsic deformation mechanisms in more complex systems.

KW - Activation volume

KW - Hysitron TI980

KW - Mechanical properties

KW - Mechanical testing

KW - Strain rate sensitivity

KW - Triboindenter 980

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SN - 0014-4851

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EP - 888

JO - Experimental Mechanics

JF - Experimental Mechanics

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ER -

Algorithms for Nanoindentation Strain Rate Jump Testing and Analysis

Abstract

Bibliographical note

Keywords

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