The paper studies the intrinsic errors on strain measurements induced by the application of an electrochemical etched square grid through serigraphy. Systematic periodic strains are observed when the etched grid is directly measured before any mechanical deformation. These apparent, non-zero strains are the errors induced by the imperfection of the applied grid. They determine the limiting precision of the measuring process. The errors are due to interference between the periodic square grid and an underlying periodic structure, the dot structure of the printer used for the original drawing of the grid or the periodic pitch of the serigraphic tissue and even both. Although they are small, they can suggest an unstable deformation, even at large strains. [S1087-1357(00)02004-9]
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November 2000
Technical Papers
Intrinsic Errors on Sheet Strain Measurements Based on a Printed Square Grid
Herman C. J. Bruneel
Herman C. J. Bruneel
OCAS N.V., Research Centre of the Sidmar Group, Flat Products Division of the Arbed Group, John Kennedylaan 3, 9060 Zelzate, Belgium
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Herman C. J. Bruneel
OCAS N.V., Research Centre of the Sidmar Group, Flat Products Division of the Arbed Group, John Kennedylaan 3, 9060 Zelzate, Belgium
Contributed by the Manufacturing Engineering Division for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received October 1998; revised January 2000. Associate Technical Editor: R. Smelser.
J. Manuf. Sci. Eng. Nov 2000, 122(4): 760-765 (6 pages)
Published Online: October 1, 1998
Article history
Revised:
October 1, 1998
Revised:
January 1, 2000
Citation
Bruneel, H. C. J. (October 1, 1998). "Intrinsic Errors on Sheet Strain Measurements Based on a Printed Square Grid ." ASME. J. Manuf. Sci. Eng. November 2000; 122(4): 760–765. https://doi.org/10.1115/1.1312337
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