BS EN ISO 527-1:2019
$167.15
Plastics. Determination of tensile properties – General principles
| Published By | Publication Date | Number of Pages |
| BSI | 2019 | 34 |
1.1
This document specifies the general principles for determining the tensile properties of plastics and plastic composites under defined conditions. Several different types of test specimen are defined to suit different types of material which are detailed in subsequent parts of ISO 527.
1.2
The methods are used to investigate the tensile behaviour of the test specimens and for determining the tensile strength, tensile modulus and other aspects of the tensile stress/strain relationship under the conditions defined.
1.3
The methods are selectively suitable for use with the following materials:
-
rigid and semi-rigid moulding, extrusion and cast thermoplastic materials, including filled and reinforced compounds in addition to unfilled types; rigid and semi-rigid thermoplastics sheets and films;
-
rigid and semi-rigid thermosetting moulding materials, including filled and reinforced compounds; rigid and semi-rigid thermosetting sheets, including laminates;
-
fibre-reinforced thermosets and thermoplastic composites incorporating unidirectional or non-unidirectional reinforcements, such as mat, woven fabrics, woven rovings, chopped strands, combination and hybrid reinforcement, rovings and milled fibres; sheet made from pre-impregnated materials (prepregs);
-
thermotropic liquid crystal polymers.
The methods are not normally suitable for use with rigid cellular materials, for which ISO 1926 is used, or for sandwich structures containing cellular materials.
1.1
This document specifies the general principles for determining the tensile properties of plastics and plastic composites under defined conditions. Several different types of test specimen are defined to suit different types of material which are detailed in subsequent parts of ISO 527.
1.2
The methods are used to investigate the tensile behaviour of the test specimens and for determining the tensile strength, tensile modulus and other aspects of the tensile stress/strain relationship under the conditions defined.
1.3
The methods are selectively suitable for use with the following materials:
-
rigid and semi-rigid moulding, extrusion and cast thermoplastic materials, including filled and reinforced compounds in addition to unfilled types; rigid and semi-rigid thermoplastics sheets and films;
-
rigid and semi-rigid thermosetting moulding materials, including filled and reinforced compounds; rigid and semi-rigid thermosetting sheets, including laminates;
-
fibre-reinforced thermosets and thermoplastic composites incorporating unidirectional or non-unidirectional reinforcements, such as mat, woven fabrics, woven rovings, chopped strands, combination and hybrid reinforcement, rovings and milled fibres; sheet made from pre-impregnated materials (prepregs);
-
thermotropic liquid crystal polymers.
The methods are not normally suitable for use with rigid cellular materials, for which ISO 1926 is used, or for sandwich structures containing cellular materials.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 4 | European foreword |
| 7 | Foreword |
| 9 | 1 Scope 2 Normative references |
| 10 | 3 Terms and definitions |
| 14 | 4 Principle and methods 4.1 Principle 4.2 Method |
| 15 | 5 Apparatus 5.1 Testing machine 5.1.1 General 5.1.2 Test speeds 5.1.3 Grips |
| 16 | 5.1.4 Force indicator 5.1.5 Strain indicator |
| 18 | 5.1.6 Recording of data |
| 19 | 5.2 Devices for measuring width and thickness of the test specimens 6 Test specimens 6.1 Shape and dimensions 6.2 Preparation of specimens 6.3 Gauge marks 6.4 Checking the test specimens |
| 20 | 6.5 Anisotropy 7 Number of test specimens |
| 21 | 8 Conditioning 9 Procedure 9.1 Test atmosphere 9.2 Dimensions of test specimen 9.3 Gripping |
| 22 | 9.4 Prestresses 9.5 Setting of extensometers 9.6 Test speed |
| 23 | 9.7 Recording of data 10 Calculation and expression of results 10.1 Stress 10.2 Strain 10.2.1 Strains determined with an extensometer |
| 24 | 10.2.2 Nominal strain 10.3 Tensile modulus 10.3.1 General 10.3.2 Chord slope |
| 25 | 10.3.3 Regression slope 10.4 Poisson’s ratio |
| 26 | 10.5 Statistical parameters 10.6 Significant figures 11 Precision 12 Test report |
| 28 | Annex A (informative) Determination of strain at yield |
| 30 | Annex B (informative) Extensometer accuracy for the determination of Poisson’s ratio |
| 31 | Annex C (normative) Calibration requirements for the determination of the tensile modulus |
| 33 | Bibliography |
