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Multi-scale mechanical characterization of a freestanding polymer film using indentation
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Liu, Kuo-Kang and Wan, Kai-tak (2008) Multi-scale mechanical characterization of a freestanding polymer film using indentation. International Journal of Materials Research (formerly Zeitschrift fuer Metallkunde), Vol.99 (No.8). pp. 862-864. doi:10.3139/146.101712 ISSN 1862-5282.
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Official URL: http://dx.doi.org/10.3139/146.101712
Abstract
A thin circular film is clamped at the periphery. An external mechanical force is applied to the film center via either a shaft with a spherical cap or a ball bearing with a specific weight. The deformed geometry allows the materials parameters of the film to be assessed for a wide range of length scales. Solid mechanics models are derived for a multi-scale deformation range as the film experiences (i) indentation or Hertzian contact, (ii) plate-bending, (iii) membrane-stretching, and (iv) large deformation. The method caters to ultrathin membranes where conventional macroscopic tensile tests might potentially damage the sample films. Thin film adhesion-delamination can also be characterized by the same set-up. Experiments were conducted for a range of polymer films.
Item Type: | Journal Article | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
Library of Congress Subject Headings (LCSH): | Thin films -- Mechanical properties, Materials science, Deformations (Mechanics) | ||||
Journal or Publication Title: | International Journal of Materials Research (formerly Zeitschrift fuer Metallkunde) | ||||
Publisher: | Carl Hanser Verlag GmbH & Co. KG | ||||
ISSN: | 1862-5282 | ||||
Official Date: | August 2008 | ||||
Dates: |
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Volume: | Vol.99 | ||||
Number: | No.8 | ||||
Number of Pages: | 3 | ||||
Page Range: | pp. 862-864 | ||||
DOI: | 10.3139/146.101712 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Version or Related Resource: | This item was also presented at the 8th European Symposium on Nano-Mechanical Testing, Huckelhoven, Germany, Sep 03 - 05, 2007. |
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