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BS EN 17117-2:2021

BS EN 17117-2:2021

$142.49

Rubber- or plastics-coated fabrics. Mechanical test methods under biaxial stress states – Determination of the pattern compensation values

Published By Publication Date Number of Pages
BSI 2021 24
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This document describes methods for the determination of compensation values for orthotropic coated fabrics (different properties along ideally perpendicular directions, such as the weft and warp yarns for woven based coated fabrics, or along the courses and wales of knitted based coated fabrics) for determining cutting patterns.

NOTE The final interpretation and the determination of the compensation values remains the responsibility of the project engineer.

Annex C describes a method to determine comparable measures of extensibility along ideally perpendicular directions of coated fabrics. The comparable measures of extensibility can be used by design engineers to assess the extensibility of a coated fabric by comparison with other coated fabrics. In this way, they can help to interpret results of compensation tests. Moreover, they can be used by material suppliers to measure the consistency of extensibility along perpendicular directions of a coated fabric from batch to batch.

PDF Catalog

PDF Pages PDF Title
2 National foreword
5 European foreword
6 Introduction
7 1 Scope
2 Normative references
3 Terms and definitions
9 4 Principle
10 5 Apparatus
5.1 Biaxial test equipment
5.2 Measurement of load
5.3 Measurement of strain
6 Sampling and preparation of test specimens
6.1 Bulk sample (number of pieces from a shipment or lot)
6.2 Number of laboratory samples
6.3 Specimen geometry and preparation
6.3.1 General
6.3.2 Contact strain measurement
6.3.3 Non-contact strain measurement
7 Atmosphere for conditioning and testing
8 Test procedure
8.1 Mounting of the specimen
8.2 Loading and selection of strain values
13 8.3 Testing
8.4 Recording
9 Representation of test results and calculation of compensation values
9.1 Representation
14 9.2 Determination of compensation values
9.3 Decompensation
9.4 Comparable measures of extensibility
10 Test report
15 Annex A (informative) Load profiles and selected strain values (examples)
19 Annex B (informative) Example evaluation of project specific compensation values
22 Annex C (normative) Load profile for comparative extensibility measures of coated fabrics
23 Bibliography

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BS EN 17117-2:2021
$142.49