906 Determination of Inelastic Stress-Strain Curves of Polypropylene and A1N Powder Reinforced Plastic by Inverse Analysis Using Micro-indentation Tests Results

2013 ◽  
Vol 2013.26 (0) ◽  
pp. _906-1_-_906-3_
Author(s):  
Kenji KANEKO ◽  
Daisuke SHINDO
Keyword(s):  
Inverse Analysis ◽  
Stress Strain ◽  
Reinforced Plastic ◽  
Indentation Tests ◽  
Micro Indentation

The Determination of Stress-Strain Curves of Thin Layers Using Indentation Tests

1986 ◽  
Vol 108 (3) ◽  
pp. 230-232 ◽  
Author(s):  
A. G. Tangena ◽  
G. A. M. Hurkx
Keyword(s):  
Finite Element ◽  
Indentation Test ◽  
Thin Layers ◽  
Finite Element Calculation ◽  
Element Calculation ◽  
Plastic Part ◽  
Stress Strain ◽  
Metal Coatings ◽  
Indentation Tests

A method is presented for estimating the plastic part of stress-strain curves of metal coatings, using a Brinell indentation test. The accuracy of the stress-strain curves obtained in this way is tested by using these curves in a finite element calculation and comparing the calculated results with results from experiments. Stress-strain curves are given for galvanic layers such as citrate Au, Co-Au, sulfamate Ni and also for solid annealed pure Au.

scholarly journals Determination of Plastic Properties of Polycrystalline Metallic Materials by Nanoindentation – Experiments and Finite Element Simulations

2004 ◽  
Vol 841 ◽  
Author(s):  
Karsten Durst ◽  
Björn Backes ◽  
Mathias Göken
Keyword(s):  
Finite Element ◽  
Strain Curve ◽  
Finite Element Simulations ◽  
Metallic Materials ◽  
Stress Strain Curve ◽  
Stress Strain ◽  
Plastic Properties ◽  
Ultrafine Grained ◽  
Indentation Tests

ABSTRACTThe determination of plastic properties of metallic materials by nanoindentation requires the analysis of the indentation process and the evaluation methods. Particular effects on the nanoscale, like the indentation size effect or piling up of the material around the indentation, need to be considered. Nanoindentation experiments were performed on conventional grain sized (CG) as well as on ultrafine-grained (UFG) copper and brass. The indentation experiments were complemented with finite element simulations using the monotonic stress-strain curve as input data. All indentation tests were carried out using cube-corner and Berkovich geometry and thus different amount of plastic strain was applied to the material, according to Tabors theory. We find an excellent agreement between simulations and experiments for the UFG materials from which a representative strain of εB ≈ 0.1 and εcc ≈ 0.2 is determined. With these data, the slope of the stress-strain curve is predicted for all materials down to an indentation depth of 800 nm.

A model for hardness determination of thin coatings from standard micro-indentation tests

2005 ◽  
Vol 200 (1-4) ◽  
pp. 886-889 ◽  
Author(s):  
J. Lesage ◽  
D. Chicot ◽  
A. Pertuz ◽  
P.-Y. Jouan ◽  
N. Horny ◽  
...  
Keyword(s):  
Thin Coatings ◽  
Indentation Tests ◽  
Micro Indentation
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