ISO 9073-3:2023
Nonwovens — Test methods — Part 3: Determination of tensile strength and elongation at break using the strip method
This document specifies a test method for the determination of the breaking force and elongation of nonwovens using a strip method in conditioned or wet state. This test method describes two procedures, Option A (width of test specimen: 25 mm) and Option B (width of test specimen: 50 mm).
This document specifies methods using constant rate of specimen extension (CRE) tensile testers. Constant rate of loading (CRL) instruments is covered, for information, in ISO 2062:2009, Annex A, in recognition of the fact that these instruments are still in use and can be used by agreement.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and materials
6 Apparatus
6.1 Tensile testing machine (CRE or CRL)
6.2 Clamps and jaw faces
6.3 Container
7 Conditioning
8 Sampling
8.1 General
8.2 Laboratory sample
8.3 Test specimens
9 Preparation of specimens
9.1 General
9.2 Dimensions
9.3 Wet test specimens
10 Preparation, calibration and verification of apparatus
10.1 Tensile testing machine
10.2 Clamping system
10.3 Verification of the total operating system of the apparatus
11 Procedure
11.1 Gauge length
11.2 Rate of extension
11.3 Mounting of test specimens
11.4 Operation
11.5 Slippage
11.6 Jaw breaks
12 Calculation
12.1 Breaking force
12.2 Measurement of apparent elongation
12.3 For each testing situation
13 Expression of results
14 Precision
15 Test report
Annex A (informative) Possible causes of low precision when strip tensile testing
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and materials
6 Apparatus
6.1 Tensile testing machine (CRE or CRL)
6.2 Clamps and jaw faces
6.3 Container
7 Conditioning
8 Sampling
8.1 General
8.2 Laboratory sample
8.3 Test specimens
9 Preparation of specimens
9.1 General
9.2 Dimensions
9.3 Wet test specimens
10 Preparation, calibration and verification of apparatus
10.1 Tensile testing machine
10.2 Clamping system
10.3 Verification of the total operating system of the apparatus
11 Procedure
11.1 Gauge length
11.2 Rate of extension
11.3 Mounting of test specimens
11.4 Operation
11.5 Slippage
11.6 Jaw breaks
12 Calculation
12.1 Breaking force
12.2 Measurement of apparent elongation
12.3 For each testing situation
13 Expression of results
14 Precision
15 Test report
Annex A (informative) Possible causes of low precision when strip tensile testing
Bibliography