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Analysis of microbending tests for polycrystalline materials using the modified strain gradient theory

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Title: Analysis of microbending tests for polycrystalline materials using the modified strain gradient theory
Authors: Jung, Bong-bu1, Lee, Hun-kee2, Park, Hyun-chul1 hcpark@postech.ac.kr
Source: International Journal of Solids & Structures. Aug2012, Vol. 49 Issue 15/16, p2066-2072. 7p.
Subjects: Microbending, Polycrystals, Strains & stresses (Mechanics), Dislocations in crystals, Crystal grain boundaries, Free surfaces (Crystallography), Material plasticity
Abstract: Abstract: A modified strain gradient theory is proposed based on the nonhomogeneity of polycrystalline metallic materials and free surface effects. Consideration of the geometrically necessary dislocations on the grain boundary and the free surface effect suggests a relationship between the characteristic length, specimen size and grain size. This relationship can explain the size effects and flow stress in micro/nanoscale structures. We will propose a new model for bending tests using the modified strain gradient plasticity theory. Using the proposed model, bending behavior of polycrystalline materials in micron-scale structures is investigated, and compared with experimental results from other researchers. [Copyright &y& Elsevier]
Copyright of International Journal of Solids & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 76309728
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Analysis of microbending tests for polycrystalline materials using the modified strain gradient theory
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  Data: <searchLink fieldCode="AR" term="%22Jung%2C+Bong-bu%22">Jung, Bong-bu</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lee%2C+Hun-kee%22">Lee, Hun-kee</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Park%2C+Hyun-chul%22">Park, Hyun-chul</searchLink><relatesTo>1</relatesTo><i> hcpark@postech.ac.kr</i>
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Solids+%26+Structures%22">International Journal of Solids & Structures</searchLink>. Aug2012, Vol. 49 Issue 15/16, p2066-2072. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Microbending%22">Microbending</searchLink><br /><searchLink fieldCode="DE" term="%22Polycrystals%22">Polycrystals</searchLink><br /><searchLink fieldCode="DE" term="%22Strains+%26+stresses+%28Mechanics%29%22">Strains & stresses (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Dislocations+in+crystals%22">Dislocations in crystals</searchLink><br /><searchLink fieldCode="DE" term="%22Crystal+grain+boundaries%22">Crystal grain boundaries</searchLink><br /><searchLink fieldCode="DE" term="%22Free+surfaces+%28Crystallography%29%22">Free surfaces (Crystallography)</searchLink><br /><searchLink fieldCode="DE" term="%22Material+plasticity%22">Material plasticity</searchLink>
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  Label: Abstract
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  Data: Abstract: A modified strain gradient theory is proposed based on the nonhomogeneity of polycrystalline metallic materials and free surface effects. Consideration of the geometrically necessary dislocations on the grain boundary and the free surface effect suggests a relationship between the characteristic length, specimen size and grain size. This relationship can explain the size effects and flow stress in micro/nanoscale structures. We will propose a new model for bending tests using the modified strain gradient plasticity theory. Using the proposed model, bending behavior of polycrystalline materials in micron-scale structures is investigated, and compared with experimental results from other researchers. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Solids & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.ijsolstr.2012.04.011
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 7
        StartPage: 2066
    Subjects:
      – SubjectFull: Microbending
        Type: general
      – SubjectFull: Polycrystals
        Type: general
      – SubjectFull: Strains & stresses (Mechanics)
        Type: general
      – SubjectFull: Dislocations in crystals
        Type: general
      – SubjectFull: Crystal grain boundaries
        Type: general
      – SubjectFull: Free surfaces (Crystallography)
        Type: general
      – SubjectFull: Material plasticity
        Type: general
    Titles:
      – TitleFull: Analysis of microbending tests for polycrystalline materials using the modified strain gradient theory
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            NameFull: Jung, Bong-bu
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            NameFull: Lee, Hun-kee
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            NameFull: Park, Hyun-chul
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            – D: 01
              M: 08
              Text: Aug2012
              Type: published
              Y: 2012
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              Value: 49
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              Value: 15/16
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            – TitleFull: International Journal of Solids & Structures
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