ISO 844:2014
Rigid cellular plastics — Determination of compression properties
ISO 844:2014 specifies a method of determining a) the compressive strength and corresponding relative deformation, or b) the compressive stress at 10 % relative deformation, and c) when desired, the compressive modulus of rigid cellular plastics.
There are two procedures:
- Procedure A employs crosshead motion for determination of compressive properties. Procedure A is intended to be used when compressive stress at 10 % relative deformation has to be determined.
- Procedure B employs strain measuring devices mounted on the specimen (contact extensometer) or similar device which measures directly sample deformation. Procedure B is intended to be used when compressive modulus has to be determined.
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Section sec_1
Section sec_2
Section sec_3
Section sec_3.1
Section sec_3.2
Section sec_3.3
Section sec_3.4
Section sec_4
Section sec_5
Section sec_6
Section sec_6.1
Section sec_6.2
Section sec_6.2.1
Section sec_6.2.2
Section sec_6.2.3
Section sec_6.3
Section sec_7
Section sec_7.1
Section sec_7.2
Section sec_7.3
Section sec_7.4
Section sec_8
Section sec_9
Section sec_9.1
Table tab_b
Figure fig_1
Table tab_c
Figure fig_2
Section sec_9.2
Section sec_9.2.1
Section sec_9.2.2
Section sec_9.3
Section sec_9.4
Section sec_10
Table tab_1
Table tab_2
Section sec_11
Reference ref_1
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Principle
6 Apparatus
6.1 Compression-testing machine
6.2 Devices for measuring displacement and force
6.3 Instruments for measuring the dimensions of the test specimens
7 Test specimens
7.1 Dimensions
7.2 Preparation
7.3 Number
7.4 Conditioning
8 Procedure
9 Expression of results
9.1 General
9.2 Compressive strength and corresponding relative deformation
9.3 Compressive stress at 10 % relative deformation
9.4 Compressive modulus of elasticity
10 Precision
11 Test report
Bibliography
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Section sec_1
Section sec_2
Section sec_3
Section sec_3.1
Section sec_3.2
Section sec_3.3
Section sec_3.4
Section sec_4
Section sec_5
Section sec_6
Section sec_6.1
Section sec_6.2
Section sec_6.2.1
Section sec_6.2.2
Section sec_6.2.3
Section sec_6.3
Section sec_7
Section sec_7.1
Section sec_7.2
Section sec_7.3
Section sec_7.4
Section sec_8
Section sec_9
Section sec_9.1
Table tab_b
Figure fig_1
Table tab_c
Figure fig_2
Section sec_9.2
Section sec_9.2.1
Section sec_9.2.2
Section sec_9.3
Section sec_9.4
Section sec_10
Table tab_1
Table tab_2
Section sec_11
Reference ref_1
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Principle
6 Apparatus
6.1 Compression-testing machine
6.2 Devices for measuring displacement and force
6.3 Instruments for measuring the dimensions of the test specimens
7 Test specimens
7.1 Dimensions
7.2 Preparation
7.3 Number
7.4 Conditioning
8 Procedure
9 Expression of results
9.1 General
9.2 Compressive strength and corresponding relative deformation
9.3 Compressive stress at 10 % relative deformation
9.4 Compressive modulus of elasticity
10 Precision
11 Test report
Bibliography