PREN 17117-1 : DRAFT 2017

European foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Sampling and preparation of test specimens
7 Atmosphere for conditioning and testing
8 Test procedure
9 Representation of test results
10 Calculation of tensile stiffnesses (tensile moduli)
   and Poisson's ratios
11 Test report
Annex A (informative) - Examples of biaxial test equipment
Annex B (informative) - Features of a biaxial test specimen
Annex C (informative) - Typical profiles
Annex D (informative) - Example methods for the determination
        of tensile stiffnesses (tensile moduli) and Poisson's
        ratios from biaxial load-strain test data
Annex E (informative) - Determination of comparative elastic
        constants
Annex F (informative) - Rationale
Bibliography

Defines methods of test using biaxial stress states for the determination of the tensile stiffness properties of biaxially oriented coated fabrics (properties along anisotropic directions, such as the weft and warp yarns for woven based coated fabrics, or along the courses and wales of knitted based coated fabrics).