Strain Gage Measurements for Accurate Yield Point Determination

Jaromír Janoušek; Miroslav Balda

doi:10.4028/www.scientific.net/AMM.486.123

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 486Strain Gage Measurements for Accurate Yield Point...

Strain Gage Measurements for Accurate Yield Point Determination

Abstract:

In this contribution the experimental program is summarized. The experiments were aimed especially at the accurate yield point determination on specimens made out of structural low carbon ÈSN 41 1523.1 steel after normalization annealing (ÈSN 411523, ASTM A623-Gr.C). These tests were carried out in the Laboratory of material diagnostics of Institute of Thermomechanics AS CR in Pilsen. Several methods for deformation and force controlled loading and various types (single with one measuring grid, rosette) of strain gages were used for achieved measurements. Likewise, the specimen made from different material batch was tested for comparative purposes. Strain gages were glued on both sides of the specimens for evaluation of coaxial alignment. Reached results are compared with those of tensile tests. All obtained data are evaluated and optimal solution is exported as output. The accurate determination of the yield point is very important for next tests of ratcheting and distortional hardening computation.

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Periodical:

Applied Mechanics and Materials (Volume 486)

Pages:

123-128

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.486.123

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Online since:

December 2013

Authors:

Jaromír Janoušek*, Miroslav Balda

Keywords:

Plasticity, Ratcheting, Strain Gages, Yield Point

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References

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