An experimental determination of the true uniaxial stress-strain behaviour of brittle rock

1974 ◽  
Vol 11 (1) ◽  
pp. A6
Keyword(s):  
Experimental Determination ◽  
Uniaxial Stress ◽  
Brittle Rock ◽  
Stress Strain ◽  
Strain Behaviour

scholarly journals Instrumented indentation for determination of full range stress-strain curves

2014 ◽  
Vol 5 (1) ◽  
pp. 6
Author(s):  
Andreas De Smedt ◽  
Stijn Hertelé ◽  
Matthias Verstraete ◽  
Koen Van Minnebruggen ◽  
Wim De Waele
Keyword(s):  
Full Range ◽  
Accurate Determination ◽  
Strain Curve ◽  
Uniaxial Stress ◽  
Instrumented Indentation ◽  
Stress Strain ◽  
Indentation Force ◽  
Strain Behaviour ◽  
Depth Curve

One common method for the determination of full range stress-strain curves by instrumented indentation is presented and validated for an aluminium alloy. This method relates properties describing the indentation force-depth curve with those describing the uniaxial stress-strain curve as traditionally obtained from a tensile test. The first aim of this paper is to explain the basic concepts of instrumented indentation. Next, the analysis method is presented and validated. This study ends with discussing the uniqueness of the obtained solution. It is concluded that accurate determination of stress-strain behaviour can be realized, but for certain materials two indentations are needed.

Thermodynamics of Crystallization in High Polymers. VI. Incipient Crystallization in Stretched Vulcanized Rubber

1950 ◽  
Vol 23 (3) ◽  
pp. 576-580 ◽  
Author(s):  
Thomas G. Fox ◽  
Paul J. Flory ◽  
Robert E. Marshall
Keyword(s):  
Theoretical Prediction ◽  
Experimental Determination ◽  
Strain Curve ◽  
Steep Slope ◽  
Stress Strain Curve ◽  
Stress Strain ◽  
Hydrostatic Method ◽  
Vulcanized Rubber ◽  
High Polymers

Abstract Experimental determination of the elongation at which crystallization commences in vulcanized rubber has been attempted through measurement of density changes by a hydrostatic method. The critical elongation for incipient crystallization appears to depend on the temperature, in approximate accordance with theoretical prediction. Crystallization sets in at an elongation well below that at which the stress-strain curve assumes a steep slope.

Uniaxial stress–strain behaviour of aluminium alloy foams

1999 ◽  
Vol 47 (8) ◽  
pp. 2323-2330 ◽  
Author(s):  
K.Y.G. McCullough ◽  
N.A. Fleck ◽  
M.F. Ashby
Keyword(s):  
Aluminium Alloy ◽  
Uniaxial Stress ◽  
Stress Strain ◽  
Strain Behaviour

Determination of Tensile and Compressive Stress Strain Curves from Bend Tests

2004 ◽  
Vol 1-2 ◽  
pp. 133-138 ◽  
Author(s):  
G. Urriolagoitia-Sosa ◽  
J.F. Durodola ◽  
N.A. Fellows
Keyword(s):  
Compressive Stress ◽  
Inverse Method ◽  
Bauschinger Effect ◽  
Stress Strain ◽  
Bending Tests ◽  
Strain Behaviour ◽  
Strain Data ◽  
Tension And Compression ◽  
Bend Tests

A new inverse method has been developed for the simultaneous derivation of tensile and compressive stress strain behaviour from bending tests only. This new procedure can be applied to materials having asymmetric tensile and compressive stress strain behaviour and also materials that have been previously strain hardened (Bauschinger Effect). This paper presents results obtained using the new method and compares them with experimentally obtained tensile and compressive stress strain curves. The agreement of the derived stress strain data in tension and compression is encouraging.

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