EVS-EN ISO 3386-2:2000

Flexible cellular polymeric materials - Determination of stress-strain characteristics in compression - Part 2: High-density materials

General information
Valid from 01.01.2000
Base Documents
ISO 3386-2:1997; EN ISO 3386-2:1998
Directives or regulations
Standard history
This part of IS0 3386 specifies a method for the determination of the compression stress-strain characteristics of flexible cellular polymeric materials of density greater 250 kg/m3. than The compression stress-strain characteristic is a measure of the load-bearing properties of the material, though not necessarily of its capacity to sustain a long-term load. The compression stress-strain characteristic differs from the indentation hardness characteristics (as determined in accordance with IS0 2439) which are known to beinfluenced by the thickness and the tensile properties of the flexible cellular material under test, the shape of the compression piate, and the shape and size of the test piece. IS0 3386-l specifies a method for low-density flexible materials, and differs from Part 2 in the following ways: Part 1 is concerned with materials of density up to 250 kg/m’, whilst Part 2 is mainly concerned with materials of density above 250 kg/m3; compression stress values have been deleted from Part 2; Part 2 does not allow the use of a cylindrical test piece. This part of IS0 3386 is a general method for testing denser flexible cellular materials (i.e. expanded cellular rubbers), measurements being made on one of more points on the steeply rising part of the stress-strain curve. The shape factor of the test piece is important and comparative test results can only be obtained on test pieces having the same shape factor.
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